LPMBH-8-FS-IM Impulse Low Profile Micro Bulkhead 8-Pin Female Socket Underwater Connector

Product Overview

The HYSF SUBSEA LPMBH-8-FS-IM Impulse Low Profile Micro Bulkhead 8-Pin Female Socket Underwater Connector is a compact, high-pressure wet-pluggable electrical bulkhead connector designed for demanding subsea, oceanographic, and underwater instrumentation applications.Featuring eight female socket contacts and a streamlined low-profile body, the LPMBH-8-FS-IM provides a reliable electrical feedthrough solution for underwater pressure housings, ROV systems, AUV platforms, underwater gliders, subsea sensors, and marine monitoring equipment.As part of the Impulse-compatible Low Profile Micro Wet-Pluggable Connector Series, the LPMBH-8-FS-IM is designed for underwater applications where compact dimensions, reliable electrical performance, and high hydrostatic pressure resistance are essential.Unlike conventional cylindrical underwater bulkhead connectors, the Low Profile Micro series features a compact, streamlined body configuration. This design helps minimize external projection and hydrodynamic resistance, making it particularly suitable for autonomous underwater vehicles (AUVs), underwater gliders, profiling floats, and compact subsea instrument packages.The LPMBH-8-FS-IM features eight female electrical socket contacts in a bulkhead mounting configuration. It is designed to be installed through an equipment panel or pressure housing, providing an electrical interface between internal equipment wiring and external underwater cable assemblies.Its molded Chloroprene Rubber (Neoprene) body, corrosion-resistant metallic bulkhead hardware, and gold-plated electrical contacts provide a reliable connection solution for demanding marine environments.The eight-contact electrical interface provides multiple connection positions for compatible power supply, signal transmission, sensor connections, and auxiliary control circuits.The LPMBH-8-FS-IM has a reference voltage rating of 250 V AC/DC RMS and a current rating of 5 A per contact according to the specific product specifications.For demanding subsea applications, the connector provides a mated pressure rating of up to 10,000 psi (approximately 690 bar), corresponding to approximately 7,000 meters of seawater depth.The bulkhead configuration incorporates an O-ring sealing arrangement to maintain watertight integrity at the equipment mounting interface. The original Impulse engineering documentation identifies a 2-014 O-ring for the LPMBH configuration.The LPMBH-8-FS-IM belongs to the wet-pluggable connector family and is designed to mate with a compatible eight-pin male in-line connector, including the LPIL-8-MP-IM configuration.The available product specification lists more than 500 wet-mating cycles, making it suitable for subsea equipment requiring repeated connection and disconnection operations.The bulkhead mounting configuration uses a 7/16-20 UNF thread and a standard 1/2-inch thread length according to the original Impulse LPMBH/LPMIL engineering documentation. The connector also features 12-inch Teflon-insulated internal electrical leads.Its eight-socket female configuration, low-profile body design, compact bulkhead mounting structure, and high-pressure performance make it suitable for AUV sensor housings, ROV equipment panels, underwater cameras, oceanographic instruments, hydrophone systems, and deep-sea monitoring equipment.HYSF SUBSEA provides underwater bulkhead connectors, low-profile subsea connectors, wet-pluggable electrical connectors, underwater panel feedthroughs, and customized subsea cable assemblies for marine equipment manufacturers, oceanographic research institutions, ROV manufacturers, AUV developers, and offshore engineering contractors.

Key Features and Benefits

1. Eight-Pin Female Socket Configuration

The LPMBH-8-FS-IM features eight female electrical socket contacts in a compact bulkhead mounting configuration.The eight-contact arrangement provides a multi-circuit electrical interface for compatible underwater power and signal applications.Key characteristics include:

• Eight female socket contacts
• Eight-contact electrical configuration
• Female bulkhead connector design
• Panel-mounted installation
• Compact electrical feedthrough interface
• Suitable for multi-channel power and signal circuits
• Designed for underwater pressure housings
• Compatible with corresponding eight-pin male connectors
• Suitable for subsea instrumentation

Typical electrical applications include:

• Underwater power supply
• Subsea signal transmission
• Multi-sensor electrical connections
• Marine instrumentation
• Underwater monitoring systems
• AUV electrical connections
• ROV sensor connections
• Subsea camera systems
• Oceanographic instruments
• Underwater data acquisition equipment
• Auxiliary control circuits
• Marine communication systems

The eight-socket configuration allows multiple electrical circuits to be integrated through one compact underwater bulkhead connector.This helps reduce the number of individual electrical feedthroughs required on compact subsea equipment.

2. Low-Profile and Streamlined Body Design

The LPMBH-8-FS-IM features a low-profile body designed for applications where connector dimensions, external projection, and hydrodynamic resistance are important considerations.Unlike conventional cylindrical underwater bulkhead connectors, the Low Profile Micro series uses a compact, streamlined body configuration.This design provides several advantages:

• Reduced external connector projection
• Compact installation footprint
• Streamlined underwater profile
• Reduced potential for snagging
• Improved integration with compact instrument packages
• Suitable for AUV hull-mounted equipment
• Suitable for underwater glider fairings
• Suitable for compact ROV sensor frames
• Improved integration in space-restricted equipment

For autonomous underwater vehicles and underwater gliders, external connector geometry can influence hydrodynamic resistance and overall equipment integration.The LPMBH-8-FS-IM provides a low-profile electrical feedthrough solution for equipment designers who need to minimize protruding components on underwater platforms.

3. Bulkhead Mounting and Electrical Feedthrough Design

The LPMBH-8-FS-IM is designed as a female bulkhead connector for installation through an underwater equipment panel or pressure housing.Unlike an in-line cable connector, the bulkhead configuration provides a fixed electrical interface between the external underwater cable and the internal electrical wiring of the equipment.Key benefits include:

• Panel-mounted electrical feedthrough
• Compact pressure-housing integration
• Female socket contact configuration
• O-ring sealing interface
• Internal Teflon-insulated electrical leads
• Suitable for underwater equipment enclosures
• Convenient external cable connection
• Suitable for subsea electronics integration
• Reduced requirement for separate electrical penetrators

The connector can be integrated into compatible ROV housings, AUV pressure vessels, underwater camera enclosures, sensor packages, and oceanographic instrument housings.Its bulkhead configuration helps simplify the connection between internal electronic systems and external underwater equipment.

4. Molded Neoprene / Chloroprene Rubber Body

The LPMBH-8-FS-IM features a molded Chloroprene Rubber (Neoprene) connector body.Chloroprene rubber is widely used in underwater connector systems because of its flexibility and suitability for marine environments.Key characteristics include:

• Molded rubber body
• Chloroprene Rubber / Neoprene construction
• Flexible protective structure
• Electrical insulation around the connector interface
• Suitable for underwater applications
• Designed for subsea equipment integration
• Supports compact connector construction
• Suitable for demanding marine environments

The molded rubber structure helps protect the electrical interface and provides flexibility for underwater equipment applications.This construction is particularly useful for underwater instruments and subsea equipment requiring compact electrical feedthroughs.

5. 316 Stainless Steel Hardware and Titanium Option

The LPMBH-8-FS-IM product specification identifies 316 stainless steel bulkhead hardware, with titanium available as an optional material.316 stainless steel provides corrosion resistance and mechanical durability for marine and subsea equipment applications.Titanium hardware can be considered for weight-sensitive equipment designs, including AUVs, underwater gliders, and compact oceanographic instrument packages.Available material references include:

• 316 Stainless Steel
• Optional Titanium Hardware
• Chloroprene Rubber Body
• Gold-Plated Electrical Contacts

The original Teledyne Impulse LPMBH engineering drawings also show brass bulkhead hardware as a standard design reference, with stainless steel available as an alternative.Final hardware material should be selected according to the actual product configuration and project requirements.

6. Gold-Plated Female Electrical Contacts

The LPMBH-8-FS-IM features eight gold-plated female socket contacts.Gold-plated contact surfaces help provide reliable electrical conductivity and corrosion resistance in demanding marine environments.The available product specifications identify gold-plated beryllium copper or brass contact materials.Key benefits include:

• Eight gold-plated female socket contacts
• Reliable electrical mating interface
• Improved corrosion resistance
• Stable electrical contact performance
• Low contact resistance
• Suitable for repeated mating operations
• Designed for subsea electrical connections
• Reliable power and signal transmission

The female socket configuration is designed to mate with the corresponding eight-pin male connector.The gold-plated contact arrangement helps maintain electrical continuity in compatible underwater power and signal systems.

7. 250 V AC/DC RMS Voltage Rating

The LPMBH-8-FS-IM has a reference voltage rating of 250 V AC/DC RMS according to the specific product specifications.This electrical rating makes the connector suitable for a variety of underwater instrumentation, monitoring, and electrical applications within its specified limits.Typical applications include:

• Underwater sensor power supply
• Marine monitoring equipment
• AUV auxiliary electrical circuits
• ROV instrumentation
• Subsea camera connections
• Underwater measurement equipment
• Oceanographic sensor systems
• Underwater communication equipment
• Subsea control circuits
• Multi-channel instrumentation

The voltage rating should be evaluated together with cable insulation, connector mating conditions, operating environment, and complete electrical system design.

8. 5 A Per Contact Current Rating

The LPMBH-8-FS-IM has a reference current rating of 5 A per contact.Its eight electrical contacts provide eight individual connection positions for compatible power and signal applications.Electrical specifications:

• Number of Contacts: 8
• Contact Gender: Female Socket
• Current Rating: 5 A per Contact
• Voltage Rating: 250 V AC/DC RMS

The total allowable current of the complete connector assembly depends on simultaneous contact loading, conductor size, cable length, thermal conditions, and electrical derating requirements.The individual contact rating should not be interpreted as a guaranteed continuous total current capacity of 40 A without considering the applicable loading and thermal conditions.This connector is suitable for compatible sensor power, control, signal, and auxiliary electrical circuits.

9. High Hydrostatic Pressure Resistance

The LPMBH-8-FS-IM is designed for demanding subsea applications requiring reliable electrical connections under high hydrostatic pressure.The reference mated pressure rating is:

• Mated Pressure: 10,000 psi
• Equivalent Pressure: Approximately 690 bar
• Reference Mated Depth: Approximately 7,000 m

The Teledyne Impulse LPMBH/LPMIL technical documentation identifies a 10,000 psi mated pressure rating for the underlying connector family.The bulkhead configuration also has a separate open-face pressure rating. The original Teledyne Impulse Mini Wet-Pluggable series documentation identifies 5,000 psi for bulkhead open-face applications.These pressure specifications make the LPMBH-8-FS-IM suitable for demanding underwater applications involving deepwater ROV equipment, AUV payloads, oceanographic instruments, subsea sensor packages, and underwater monitoring systems.The mated pressure rating applies to the correctly configured and mated connector assembly.Open-face pressure capability is a separate rating and should be considered independently.The complete installed equipment assembly, including the pressure housing and mounting interface, must also be qualified for its intended operating depth.

10. Wet-Pluggable Connection Capability

The LPMBH-8-FS-IM belongs to the Impulse-compatible Low Profile Micro Wet-Pluggable Connector Series.Wet-pluggable underwater connectors are designed to support mating and unmating operations in an underwater environment when used according to the manufacturer’s procedures.This capability is particularly useful for subsea equipment requiring regular replacement, maintenance, or connection of external instruments.Typical benefits include:

• Underwater mating capability
• Reduced need to recover complete equipment assemblies
• Easier subsea equipment replacement
• Convenient sensor installation
• Flexible underwater instrument integration
• Suitable for marine research systems
• Designed for repeated connection operations
• Suitable for subsea equipment maintenance

The available product specification lists more than 500 wet-mating cycles.Actual service life depends on operating conditions, maintenance, contact cleanliness, seal condition, and correct mating procedures.

11. Nitrile O-Ring Sealing System

The LPMBH-8-FS-IM incorporates an O-ring sealing arrangement at the bulkhead mounting interface.The original Teledyne Impulse LPMBH/LPMIL engineering documentation identifies a 2-014 O-ring.The available product specification identifies nitrile rubber as the sealing material.The O-ring helps provide a watertight seal between the connector body and the equipment mounting surface.Key characteristics include:

• O-ring sealing arrangement
• Reference O-ring size: 2-014
• Nitrile rubber sealing material
• Designed for pressure-housing installation
• Protection against water ingress
• Suitable for subsea bulkhead applications
• Requires proper surface preparation and installation

The mounting surface should be clean, flat, and free from scratches or damage around the sealing area.O-rings should be inspected for cuts, deformation, wear, and contamination before installation.

12. 7/16-20 UNF Bulkhead Mounting Thread

The LPMBH-8-FS-IM uses a 7/16-20 UNF mounting thread according to the original Impulse LPMBH/LPMIL engineering documentation.Reference mechanical specifications include:

• Mounting Thread: 7/16-20 UNF-2A
• Standard Thread Length: 1/2 inch
• Mounting Surface Diameter: Approximately 0.78 inch
• Reference O-Ring: 2-014
• Mounting Configuration: Bulkhead / Panel Mount
• Maximum Reference Mounting Torque: 100 in-lb

This threaded mounting arrangement allows the connector to be installed through a compatible equipment panel or pressure housing.The mounting dimensions and sealing interface should be checked against the equipment drawing before machining the installation hole.

13. Internal Teflon-Insulated Electrical Leads

The LPMBH-8-FS-IM is designed with internal electrical leads for connection to the equipment’s internal wiring system.The original Teledyne Impulse LPMBH/LPMIL engineering documentation identifies 12-inch Teflon-insulated internal leads.Key characteristics include:

• Internal electrical pigtails
• Teflon / PTFE insulation
• Eight electrical conductors
• Suitable for internal equipment wiring
• Designed for pressure-housing integration
• Supports convenient electrical termination

The internal leads can be connected to compatible circuit boards, power distribution systems, sensor electronics, and subsea control equipment.The conductor gauge and termination requirements should be selected according to the specific product drawing and electrical load.

14. Compatible Male In-Line Connector

The LPMBH-8-FS-IM is designed to mate with a compatible eight-contact male in-line connector.The reference mating configuration is:

• Female Bulkhead Connector: LPMBH-8-FS-IM
• Male In-Line Connector: LPIL-8-MP-IM

The LPIL-8-MP-IM provides the external cable connection to the female bulkhead connector installed on the equipment housing.This combination provides a practical cable-to-equipment connection solution for underwater instruments and subsea electronic systems.The exact mating dimensions, contact arrangement, and locking sleeve configuration should be verified against the approved engineering drawing before ordering.

15. Compatible Male Dummy Connector Protection

The LPMBH-8-FS-IM can be protected with a compatible eight-pin male dummy connector when the bulkhead connector is not in use.The original Teledyne Impulse LPMBH/LPMIL technical documentation identifies the LPMDC series as the compatible dummy connector family for female bulkhead and female in-line configurations.The reference eight-contact dummy designation is LPMDC-8-MP.The dummy connector provides a protective interface for the exposed female socket contacts.Its main functions include:

• Protecting female electrical contacts
• Reducing exposure to foreign particles
• Protecting the mating interface during transportation
• Supporting equipment storage
• Reducing accidental mechanical contact
• Supporting routine subsea equipment maintenance

The correct dummy connector should be selected according to the connector gender and contact configuration.

16. Electrical Insulation and Contact Resistance Performance

The available LPMBH-8-FS-IM product specifications provide the following reference electrical performance values:

• Insulation Resistance: Greater than 200 MΩ
• Contact Resistance: Less than 0.01 Ω

These characteristics support reliable electrical performance in compatible underwater instrumentation systems.Insulation resistance is important for maintaining electrical separation between contacts and preventing unwanted leakage paths.Low contact resistance helps reduce electrical losses at the mating interface.Actual electrical performance should be evaluated according to the applicable test method, measurement voltage, connector condition, and complete electrical assembly.

17. Suitable for AUV and Underwater Glider Applications

Autonomous underwater vehicles and underwater gliders require compact electrical feedthroughs that do not unnecessarily increase external dimensions or hydrodynamic resistance.The LPMBH-8-FS-IM provides a low-profile eight-socket female bulkhead connection for these platforms.Typical applications include:

• AUV sensor housing connections
• Underwater glider instrumentation
• Profiling float equipment
• Oceanographic research vehicles
• Autonomous monitoring platforms
• Compact underwater measurement systems
• External sensor connections
• Subsea pressure-housing feedthroughs

Its low-profile construction is particularly useful when integrating electrical connections into compact equipment housings.

18. Suitable for ROV and Subsea Instrumentation

ROV systems use various underwater electrical connectors for power distribution, sensor connections, and monitoring equipment.The LPMBH-8-FS-IM provides an eight-socket female bulkhead connection option for compatible ROV instrumentation.Typical applications include:

• ROV sensor connections
• Subsea camera systems
• Underwater lighting equipment
• ROV-mounted monitoring instruments
• Subsea control equipment
• Marine measurement systems
• Underwater inspection equipment
• ROV auxiliary electrical connections
• Subsea electronics housings

Its compact bulkhead structure is useful in crowded ROV frames and equipment housings where installation space is limited.

19. Oceanographic and Environmental Monitoring Applications

Oceanographic instruments require reliable underwater electrical feedthroughs for long-term data collection and environmental monitoring.The LPMBH-8-FS-IM can be integrated into compatible oceanographic sensor housings.Typical applications include:

• CTD instruments
• Dissolved oxygen sensors
• Fluorometer sensors
• Water-quality monitoring equipment
• Turbidity measurement systems
• Oceanographic data loggers
• Environmental monitoring platforms
• Deep-sea research instruments
• Scientific landers
• Benthic observatories
• Marine measurement equipment

The eight-contact electrical interface provides multiple connection positions for compatible sensor power, signal, and auxiliary circuits.

20. Underwater Camera and Lighting Systems

Underwater cameras and lighting systems require reliable electrical feedthroughs between internal electronics and external underwater cables.The LPMBH-8-FS-IM provides a compact eight-contact female bulkhead connection for compatible camera and lighting equipment.Typical applications include:

• Underwater inspection cameras
• Compact ROV cameras
• Subsea video systems
• Underwater LED lighting
• Marine imaging equipment
• Underwater monitoring cameras
• Camera control systems
• Subsea auxiliary power connections
• Marine inspection instruments

The eight-contact configuration provides multiple electrical connection positions for compatible systems requiring separate power, control, and signal circuits.The connector should be selected according to the camera’s voltage, current, pin assignment, and mating interface requirements.

21. Acoustic Modems and Hydrophone Systems

Underwater acoustic communication and measurement equipment frequently requires reliable electrical connections for power and signal transmission.The LPMBH-8-FS-IM can be integrated into compatible acoustic instrument housings and cable assemblies.Typical applications include:

• Underwater acoustic modems
• Hydrophone arrays
• Acoustic measurement systems
• Subsea communication equipment
• Marine listening stations
• Underwater research instruments
• Acoustic monitoring platforms
• Multi-channel acoustic sensors

Its eight-contact configuration provides multiple electrical connection positions for compatible power, signal, and auxiliary circuits.

22. Deep-Sea Landers and Benthic Observatories

Deep-sea landers and benthic observatories use multiple underwater sensors and monitoring instruments for long-term scientific research.These systems require compact and reliable electrical feedthroughs for sensor power, data acquisition, and equipment control.The LPMBH-8-FS-IM can be integrated into compatible equipment housings for:

• Deep-sea landers
• Benthic observatories
• Oceanographic monitoring platforms
• Long-term environmental monitoring systems
• Subsea data acquisition equipment
• Scientific underwater instruments
• Marine research installations

Its compact low-profile configuration is useful for instrument layouts where installation space is limited.

23. OEM and Customized Subsea Bulkhead Solutions

HYSF SUBSEA provides underwater bulkhead connectors, low-profile connectors, wet-pluggable electrical connectors, and customized subsea cable assemblies for OEM equipment manufacturers.Engineering support can include:

• Eight-pin female bulkhead connectors
• Low-profile bulkhead configurations
• Impulse-compatible connector interfaces
• Customized bulkhead hardware materials
• 316 stainless steel hardware
• Optional titanium hardware
• Internal electrical lead configurations
• Compatible male in-line connectors
• Dummy connector selection
• Locking sleeve selection
• Technical drawings
• Electrical testing
• Hydrostatic pressure testing
• OEM pressure-housing integration

Customers can provide equipment drawings, panel thickness, mounting thread requirements, operating pressure, electrical specifications, and mating connector models for engineering evaluation.

LPMBH-8-FS-IM Technical Specifications

• Brand: HYSF SUBSEA
• Model: LPMBH-8-FS-IM
• Connector Series: Impulse-Compatible Low Profile Micro
• Product Type: Bulkhead Underwater Connector
• Connector Configuration: 8-Pin Female Socket
• Number of Contacts: 8
• Contact Gender: Female Socket
• Voltage Rating: 250 V AC/DC RMS
• Current Rating: 5 A per Contact
• Insulation Resistance: Greater than 200 MΩ
• Contact Resistance: Less than 0.01 Ω
• Mated Pressure Rating: 10,000 psi / Approximately 690 bar
• Reference Mated Depth: Approximately 7,000 m
• Open-Face Pressure Rating: 5,000 psi / Approximately 345 bar (Original Impulse Mini Series Reference)
• Wet-Mate Cycles: More than 500 (Specific Product Listing Reference)
• Body Material: Chloroprene Rubber / Neoprene
• Bulkhead Hardware: 316 Stainless Steel
• Optional Hardware: Titanium
• Alternative Original Impulse Hardware Reference: Brass
• Contact Material: Beryllium Copper / Brass
• Contact Plating: Gold-Plated
• Mounting Thread: 7/16-20 UNF-2A
• Standard Thread Length: 1/2 inch
• Mounting Surface Diameter: Approximately 0.78 inch
• Maximum Reference Mounting Torque: 100 in-lb
• O-Ring Reference: 2-014
• Sealing Material: Nitrile Rubber
• Internal Leads: 12-inch Teflon / PTFE Insulated Leads
• Locking Sleeve: Compatible POM or Stainless Steel
• Water Temperature: −4°C to +60°C
• Air Temperature: −40°C to +60°C
• Connector Profile: Low-Profile / Streamlined
• Installation: Bulkhead / Panel Mount
• Mating Connector: Compatible 8-Pin Male In-Line Connector
• Reference Male In-Line Connector: LPIL-8-MP-IM
• Reference Dummy Connector: LPMDC-8-MP
• Connector Type: Wet-Pluggable
• Typical Applications: AUVs, ROVs, Underwater Gliders, Oceanographic Instruments, Subsea Sensors, Underwater Cameras, and Marine Monitoring Systems

Typical Applications of LPMBH-8-FS-IM

1. Autonomous Underwater Vehicles (AUVs)

AUVs require compact and reliable electrical feedthroughs for sensors, navigation systems, and external instrumentation.The LPMBH-8-FS-IM provides a low-profile eight-pin female bulkhead connection suitable for compatible AUV pressure housings and sensor payloads.

2. Underwater Gliders

Underwater gliders require streamlined equipment configurations to maintain hydrodynamic efficiency.The LPMBH-8-FS-IM can be used for electrical connections between internal glider electronics and external underwater cables.

3. ROV Systems

ROV platforms use multiple electrical connectors for cameras, sensors, lighting, and auxiliary instruments.The LPMBH-8-FS-IM provides a compact panel-mounted electrical feedthrough for compatible ROV equipment.

4. CTD Oceanographic Instruments

CTD instruments measure conductivity, temperature, and depth in marine research applications.The LPMBH-8-FS-IM can be integrated into compatible CTD instrument housings.

5. Dissolved Oxygen Sensors

Underwater dissolved oxygen sensors require reliable power and signal connections for environmental monitoring.The eight-socket female bulkhead connector provides an electrical feedthrough for compatible sensor configurations.

6. Fluorometer Sensors

Fluorometers are widely used for underwater water-quality analysis and oceanographic research.The LPMBH-8-FS-IM can be installed in compatible fluorometer equipment housings.

7. Subsea Camera Systems

Compact underwater cameras require reliable electrical feedthroughs for power and auxiliary signals.The LPMBH-8-FS-IM provides a low-profile connection option for suitable subsea imaging systems.

8. Underwater Lighting Systems

Underwater LED lights and inspection lamps require dependable electrical connections in marine environments.The connector can be integrated into compatible underwater lighting housings.

9. Hydrophone Arrays

Hydrophone systems require reliable electrical connections for underwater acoustic measurements.The LPMBH-8-FS-IM provides a compact eight-contact interface for compatible acoustic instrument assemblies.

10. Underwater Acoustic Modems

Acoustic modem systems use electrical connections for power and signal interfaces.The LPMBH-8-FS-IM can be installed in compatible subsea communication equipment.

11. Deep-Sea Landers

Deep-sea landers use pressure-resistant electrical feedthroughs for instruments, sensors, and monitoring systems.The LPMBH-8-FS-IM provides a bulkhead mounting option for compatible lander instrumentation.

12. Benthic Observatories

Benthic observatories support long-term marine environmental monitoring.The connector can be integrated into compatible sensor and cable assemblies used in these scientific platforms.

13. Environmental Monitoring Systems

Marine environmental monitoring equipment requires dependable underwater connections for sensors and data acquisition systems.The LPMBH-8-FS-IM can be used for compatible temperature, dissolved oxygen, turbidity, and other monitoring instruments.

14. Profiling Floats

Profiling floats require compact electrical feedthroughs for underwater measurement and data collection systems.The low-profile bulkhead configuration is suitable for compatible instrument housings.

15. Offshore Subsea Instrumentation

Offshore monitoring equipment requires reliable electrical connections for underwater sensors and instrumentation.The LPMBH-8-FS-IM provides a compact wet-pluggable bulkhead connection option for compatible subsea equipment.

LPMBH-8-FS-IM vs LPIL-8-MP-IM

Both connectors belong to the Impulse-compatible Low Profile Micro Wet-Pluggable connector family, but they serve different installation purposes.

LPMBH-8-FS-IM

• Eight Female Socket Contacts
• Bulkhead Connector
• Panel-Mounted Installation
• Electrical Feedthrough Design
• Internal Teflon-Insulated Leads
• 7/16-20 UNF Mounting Thread
• 2-014 O-Ring Sealing Arrangement
• Suitable for Pressure Housings
• Designed for External Underwater Cable Connections

LPIL-8-MP-IM

• Eight Male Pin Contacts
• In-Line Cable Connector
• Cable-Mounted Installation
• Male Plug Configuration
• Suitable for Cable-to-Bulkhead Connection
• Designed to Mate with Compatible Female Bulkhead Connectors

The LPMBH-8-FS-IM is installed on the equipment housing, while the LPIL-8-MP-IM is installed on the external cable.Together, these two connectors provide a practical eight-contact underwater electrical connection system.

LPMBH-8-FS-IM vs Standard Micro Circular Bulkhead Connectors

The LPMBH-8-FS-IM and conventional Micro Circular bulkhead connectors serve different equipment integration requirements.

LPMBH-8-FS-IM Low Profile Micro Bulkhead

• Low-profile streamlined construction
• Eight female socket contacts
• Bulkhead / panel mounting
• Wet-pluggable connection
• Impulse-compatible interface
• Compact installation geometry
• 10,000 psi mated pressure rating
• Suitable for AUVs and underwater gliders
• Suitable for drag-sensitive platforms
• Designed for compact instrument housings

Standard Micro Circular Bulkhead Connector

• Cylindrical circular body design
• Multiple contact configurations
• Male and female bulkhead options
• Threaded panel mounting
• Compact circular connection interface
• Suitable for ROVs, AUVs, and subsea sensors
• Different electrical and pressure ratings depending on configuration

The LPMBH-8-FS-IM is particularly suitable when a low-profile connector geometry is required to minimize external projection and hydrodynamic interference.Conventional Micro Circular connectors may be preferable when a cylindrical interface, different contact density, or alternative mounting configuration is needed.

Installation, Mating and Maintenance Guidelines

1. Check the Equipment Mounting Dimensions

Verify the panel thickness, mounting hole, 7/16-20 UNF thread, and available installation space before machining the pressure housing.

2. Prepare the Mounting Surface

Ensure the mounting surface is flat, clean, and free from scratches, burrs, and contamination around the sealing interface.

3. Inspect the O-Ring

Inspect the reference 2-014 O-ring for cuts, wear, deformation, or contamination.Replace damaged sealing components before installation.

4. Apply Suitable Lubrication

Apply compatible lubricant to the designated O-ring sealing surface according to the manufacturer’s instructions.Avoid contaminating the electrical contact surfaces.

5. Install the Bulkhead Connector

Insert the connector into the prepared mounting position and secure it using the appropriate mounting hardware.Follow the manufacturer’s mounting torque requirements. The original Impulse LPMBH/LPMIL documentation specifies a maximum mounting torque of 100 in-lb.

6. Connect Internal Electrical Leads

Connect the eight internal Teflon-insulated leads to the equipment’s electrical system according to the approved pin assignment.Verify the pin mapping and electrical continuity before closing the pressure housing.

7. Inspect the Female Socket Interface

Inspect all eight female socket contacts for contamination, corrosion, deformation, or foreign particles.

8. Align the Male Connector

Align the female bulkhead connector with the corresponding eight-pin male in-line connector.Ensure that the keying and contact positions are correctly aligned before mating.

9. Complete the Mating Operation

Perform the mating operation according to the approved underwater connector procedure.Do not force the connector or apply excessive side loads during mating.

10. Install the Locking Sleeve

Install the compatible POM or stainless steel locking sleeve.Verify that the locking mechanism is fully engaged before underwater deployment.

11. Perform Electrical Testing

Verify electrical continuity, contact resistance, and insulation resistance according to the applicable project requirements.

12. Perform Pressure Testing

Test the complete connector and pressure-housing assembly according to the approved hydrostatic pressure qualification procedure.

13. Post-Deployment Maintenance

After exposure to seawater, rinse the connector exterior with fresh water according to the manufacturer’s maintenance instructions.Inspect the connector body, female socket contacts, O-ring, mounting hardware, and internal electrical terminations before subsequent use.When the connector is not in use, install the compatible LPMDC-8-MP dummy plug to protect the female socket interface.

Quality Control and Testing

Depending on the approved HYSF configuration and project requirements, quality-control procedures may include:

• Visual inspection
• Dimensional inspection
• Mounting thread inspection
• Bulkhead body inspection
• Contact position verification
• Contact plating inspection
• O-ring inspection
• Electrical continuity testing
• Contact resistance testing
• Insulation resistance testing
• Mating compatibility testing
• Internal lead inspection
• Mounting hardware inspection
• Hydrostatic pressure testing
• Post-pressure electrical performance verification
• Final product inspection

Electrical test reports, dimensional inspection reports, and hydrostatic pressure test documentation can be provided according to agreed project requirements.

Frequently Asked Questions

Q1: What is the LPMBH-8-FS-IM connector?

The LPMBH-8-FS-IM is an eight-pin female bulkhead underwater connector from the Impulse-compatible Low Profile Micro Wet-Pluggable Connector Series.It is designed for underwater pressure housings, AUVs, ROVs, underwater gliders, and oceanographic instruments.

Q2: How many contacts does the LPMBH-8-FS-IM have?

The LPMBH-8-FS-IM features eight female electrical socket contacts.

Q3: Is the LPMBH-8-FS-IM an in-line or bulkhead connector?

It is a female bulkhead connector designed for panel-mounted installation through an underwater equipment housing.The LPIL series is used for in-line cable connectors.

Q4: What is the voltage rating?

The specific product specification lists a reference voltage rating of 250 V AC/DC RMS.

Q5: What is the current rating?

The reference current rating is 5 A per contact.The total allowable current of the complete connector assembly depends on simultaneous electrical loading, conductor size, temperature, and thermal derating requirements.

Q6: What is the pressure rating?

The reference mated pressure rating is 10,000 psi, approximately 690 bar.

Q7: What is the open-face pressure rating?

The original Teledyne Impulse Mini Wet-Pluggable series documentation specifies 5,000 psi for the bulkhead open-face configuration.

Q8: Is the LPMBH-8-FS-IM a wet-mate connector?

Yes. It belongs to the Low Profile Micro Wet-Pluggable connector family and is designed for underwater mating applications.

Q9: What is the connector body material?

The connector features a molded Chloroprene Rubber / Neoprene body.

Q10: What materials are available for the bulkhead hardware?

The specific product specification identifies 316 stainless steel, with titanium available on request. The original Impulse engineering documentation also identifies brass hardware and stainless steel as an available bulkhead body option.

Q11: What type of contacts does the connector use?

The LPMBH-8-FS-IM features eight female socket contacts with gold-plated contact surfaces.The reference contact materials include beryllium copper and brass.

Q12: What is the mounting thread?

The reference mounting thread is 7/16-20 UNF-2A, with a standard 1/2-inch thread length.

Q13: What O-ring does the connector use?

The original Impulse LPMBH/LPMIL engineering documentation identifies a 2-014 O-ring.

Q14: Does the connector include internal cable leads?

Yes. The original Impulse LPMBH/LPMIL documentation identifies 12-inch Teflon-insulated internal leads.

Q15: Which connector mates with the LPMBH-8-FS-IM?

The LPIL-8-MP-IM is the reference eight-pin male in-line connector for the LPMBH-8-FS-IM female bulkhead configuration.

Q16: Which dummy connector is compatible?

The original Impulse technical manual identifies the LPMDC series as the dummy connector family for female LPMBH configurations.The reference eight-contact designation is LPMDC-8-MP.

Q17: Is the LPMBH-8-FS-IM suitable for AUV applications?

Yes. Its low-profile construction and compact bulkhead installation make it suitable for compatible AUV sensor housings and underwater glider instrumentation.

Q18: Can the connector be installed in an ROV pressure housing?

Yes. It provides a bulkhead electrical feedthrough for compatible ROV pressure housings, sensor enclosures, and subsea instrumentation systems.

Q19: Can titanium hardware be supplied?

Titanium hardware is listed as an optional material in the specific product specification. Availability depends on the selected configuration.

Q20: Can hydrostatic pressure test reports be supplied?

Hydrostatic pressure testing and corresponding documentation can be arranged according to agreed project requirements.

Why Choose HYSF SUBSEA LPMBH-8-FS-IM?

The HYSF SUBSEA LPMBH-8-FS-IM Impulse Low Profile Micro Bulkhead 8-Pin Female Socket Underwater Connector provides a compact and reliable electrical feedthrough solution for demanding marine and subsea applications.Its principal features include:

• Eight female electrical socket contacts
• Low-profile micro bulkhead configuration
• Panel-mounted electrical feedthrough design
• Impulse-compatible connector interface
• Molded Chloroprene Rubber / Neoprene body
• 316 stainless steel hardware
• Optional titanium hardware
• Brass hardware reference option
• Gold-plated electrical contacts
• 250 V AC/DC RMS reference voltage rating
• 5 A per contact reference current rating
• 10,000 psi mated pressure rating
• 5,000 psi open-face pressure reference
• More than 500 wet-mating cycles reference
• 7/16-20 UNF mounting thread
• 1/2-inch standard thread length
• 2-014 O-ring sealing arrangement
• 12-inch Teflon-insulated internal leads
• Compatible LPIL-8-MP-IM male in-line connector
• Compatible LPMDC-8-MP dummy connector
• Suitable for underwater pressure housings
• Suitable for AUV and underwater glider integration
• Suitable for ROV sensor and camera systems
• Suitable for oceanographic instruments
• Suitable for subsea environmental monitoring
• Customized subsea bulkhead solutions
• OEM engineering and manufacturing support

For AUV manufacturers, ROV system integrators, oceanographic research institutions, underwater instrumentation suppliers, and offshore engineering contractors, the LPMBH-8-FS-IM provides a practical eight-pin female low-profile underwater bulkhead connection solution.Contact HYSF SUBSEA for product specifications, technical drawings, compatible male connectors, mounting dimensions, dummy plugs, locking accessories, customized electrical feedthrough solutions, and quotations for the LPMBH-8-FS-IM Impulse Low Profile Micro Bulkhead 8-Pin Female Socket Connector.