Honeywell EM940 Radar Level Gauge P/N 053372
Honeywell
New product
Manufacturer / brand: Honeywell
Nameplate manufacturer: Honeywell Kft.
Manufacturer address visible on the nameplate: Bourges, France
Country of origin: The exact manufacturing country of this individual instrument is not conclusively established by the visible nameplate. The company address alone should not be treated as proof of the unit’s country of manufacture.
Exact model: EM940
Visible part number: P/N 053372
Nameplate description: PRESSURE SENSOR
Product type: Marine radar level gauge with integrated inert-gas pressure measurement
Equipment family: Honeywell EMx40 radar system
Marine application: Cargo-tank level measurement and inert-gas pressure monitoring
Visible certification reference: LCIE 05 ATEX 6087X
Visible conformity marking: CE 0081
Visible protection marking: IP66/67
Visible hazardous-area marking: Ex ia [ia Ga] IIC or IIB T4 Ga / Ex ia [ia Da] IIIC T130°C Da
Identification note: The photograph shows the model EM940 and part number 053372 on a Honeywell nameplate. The unit is identified as a pressure sensor, while Honeywell’s published product documentation describes the EM940 as a marine radar level gauge incorporating an inert-gas pressure transmitter. When ordering, confirm whether the requirement is for the complete EM940 radar assembly or the pressure-sensor component.
The Honeywell EM940 Radar Level Gauge with Pressure Sensor is a marine tank-gauging instrument designed for non-contact measurement of liquid levels in cargo tanks. It is used in tanker applications where reliable information about cargo level and tank conditions supports loading, discharging and cargo monitoring operations.
The EM940 uses frequency-modulated continuous-wave (FMCW) radar technology. Its planar antenna directs radar energy into the tank, and the instrument processes the reflected signal to determine the distance to the liquid surface. The EM940 also incorporates inert-gas pressure measurement, allowing the system to provide additional tank information through the associated monitoring equipment.
The supplied photograph shows a stainless-steel instrument housing, multiple bolted covers, connected metal-braided and flexible lines, and the product identification plate. The nameplate is particularly important for identifying the correct model and pressure-sensor configuration.
SM MARINE SERVICE™ supports marine equipment identification and spare-parts sourcing inquiries for Honeywell EM940 radar gauges, pressure sensors and associated tank-gauging components, subject to availability and compatibility verification.
Suggested image 1 — Main product photograph: Use the supplied SM MARINE SERVICE™ photograph of the actual EM940 P/N 053372. Recommended image filename: honeywell-em940-pressure-sensor-pn-053372.jpg. Alt text: Honeywell EM940 marine radar level gauge pressure sensor P/N 053372.
The Honeywell EM940 is a marine radar level gauge designed for measuring the level of liquid cargo in tanker tanks without requiring the radar instrument to contact the liquid itself.
The system can transmit cargo level, pressure and temperature information to a central monitoring interface. The integrated inert-gas pressure transmitter is a distinguishing feature of the EM940 compared with the EM540 model, which does not include the same integrated IG pressure measurement function in Honeywell’s published comparison.
The EM940 belongs to the Honeywell EMx40 system family. Depending on the installation, the wider system may also include T901-P temperature or pressure transmitters, LOG3840 deck digital indicators and a compatible safety or data-collection unit.
These are associated system components; they are not all necessarily built into the EM940 radar housing.
The radar transmits a high-frequency signal toward the liquid surface.
The signal reflects from the surface and returns to the instrument.
The radar electronics process the returned signal and calculate the distance to the liquid.
The configured tank geometry and system parameters are used to determine the displayed level.
The measurement is transmitted to the ship’s cargo monitoring system.
The quality of the measurement depends on correct installation, the tank configuration, the condition of the antenna and the correct setup of the monitoring system.
Suggested image 2 — Radar principle: Add a simple, clearly labelled diagram showing the EM940 mounted on the top of a cargo tank, the radar beam travelling toward the liquid surface and the level signal returning to the instrument. Use an original diagram or an approved manufacturer illustration rather than an unrelated supplier graphic.
The EM940 measures liquid level using radar rather than a mechanical float or a sensor immersed in the cargo. This is useful in tanker installations handling liquid hydrocarbons, chemicals and other suitable cargoes.
Honeywell’s published technical data specifies a 10 GHz FMCW radar with a 13° antenna aperture angle. This technology supports continuous level measurement in compatible cargo-tank installations.
The EM940 includes an inert-gas pressure transmitter. This provides pressure information in addition to radar level measurement, subject to the correct configuration and integration of the installed system.
Honeywell documentation describes automatic radar self-testing and antenna-fouling detection. These features can help the system identify certain equipment or measurement conditions that require inspection.
The EM940 supports digital communication with the compatible tank-gauging system. System configuration and access to readings depend on the connected monitoring equipment and approved configuration.
The published specifications identify a 316L stainless-steel housing, IP66/IP67 protection and a design intended for marine cargo-tank applications.
The EM940 has intrinsic-safety approval for specified hazardous-area applications. The exact certification, gas group, temperature class and installation conditions must be checked against the individual instrument’s nameplate and applicable certificates.
The following table summarises Honeywell’s published EM940 specifications. Individual configurations, revisions and special mounting arrangements may affect the applicable limits.
| Parameter | Published information |
|---|---|
| Manufacturer | Honeywell |
| Model | EM940 |
| Photographed unit part number | P/N 053372 |
| Product type | Marine radar type level gauge with integrated IG pressure transmitter |
| Radar technology | FMCW |
| Radar frequency | 10 GHz |
| Antenna aperture angle | 13° |
| Measurement range | 600 mm to 42,000 mm |
| Resolution | 1 mm |
| Instrument accuracy | ±3 mm |
| Operating accuracy | ±5 mm |
| Operating ambient temperature | -40°C to +70°C |
| Storage temperature | -40°C to +85°C |
| Product temperature | -40°C to +200°C with special mounting features |
| Maximum pressure | 1 bar, as specified for the gauge |
| Housing material | Stainless steel SS316L |
| Protection rating | IP66/IP67 |
| Process connection | PN10 DN250 |
| Approximate weight | 18 kg |
| Communication protocol | EMS |
| Integrated IG pressure measurement | Yes |
| Technical manual reference | MT5016 / MT5016E |
| Installation manual reference | MI5016 / MI5016E |
| Maintenance manual reference | MM5016 / MM5016E |
Important: The 1 bar maximum pressure in the published EM940 datasheet is a gauge specification. It should not be confused with the measuring range of the pressure-sensor component. The exact pressure-sensor range and calibration must be confirmed for the installed version.
The published product-temperature limit also depends on special mounting features. Do not assume that every installation can operate at +200°C without the required mounting arrangement.
The EM940 is part of a larger marine tank-gauging system. Depending on the installation, important components may include the following.
The housing contains the radar instrument, while the antenna directs the radar beam toward the liquid surface. A dirty antenna, damaged protective surface or incorrect mounting can affect measurement quality.
The photographed unit is identified as a pressure sensor. In the EM940 arrangement, the integrated pressure transmitter measures inert-gas pressure. Pressure readings depend on the correct sensor variant, calibration and system configuration.
The connection board provides electrical connection points for the instrument and its associated cables. Honeywell maintenance documentation identifies the EM940 connecting board as a serviceable component on relevant versions.
The terminal box protects the electrical connections. Cable glands, sealing rings and cover gaskets help maintain the enclosure’s environmental protection and electrical integrity.
The EM940 uses a PN10 DN250 process connection according to the published datasheet. The mounting arrangement and gasket must match the vessel’s installed configuration and approved procedure.
Depending on the vessel’s arrangement, the wider EMx40 system may include:
T901-P temperature or pressure transmitter
LOG3840 deck digital indicator
TA3840S safety unit
Compatible system communication and monitoring equipment
Marine-rated cables, connectors and cable glands
Suggested image 3 — System components: Insert a labelled system diagram showing the EM940 radar, associated T901-P transmitter where fitted, safety unit and deck indicator. Clearly distinguish components that are external to the radar from parts contained within the instrument.
The Honeywell EM940 is designed for compatible marine cargo-tank gauging installations, particularly on tankers.
Typical applications include:
Oil tanker cargo-tank level measurement
Product tanker cargo monitoring
Chemical tanker tank gauging
Cargo-tank inert-gas pressure monitoring
Liquid hydrocarbon and compatible chemical cargo measurement
Bitumen tanker applications within the instrument’s specified operating limits
FSO and FPSO tank-monitoring installations where the system is approved and configured for the application
Shipboard cargo monitoring systems connected to a compatible central interface
The instrument’s suitability depends on the tank design, cargo conditions, installation arrangement, hazardous-area requirements and vessel-specific approvals.
Honeywell’s EMx40 maintenance documentation contains a troubleshooting guide for the radar transmitters and associated pressure and temperature equipment. The following issues are drawn from that guidance where applicable, with practical checks for maintenance teams.
Possible cause: A dirty antenna or a radar transmitter fault.
Recommended checks:
Review the displayed level and compare it with other reliable tank information.
Inspect the antenna condition according to the approved maintenance procedure.
Check whether the problem affects one tank or multiple instruments.
If cleaning does not resolve the fault, follow the manufacturer’s diagnostic procedure.
Honeywell’s maintenance manual specifically identifies a dirty antenna as a possible cause of faulty measurement or lost measurement.
Possible cause: Honeywell’s EMx40 maintenance guide associates these messages with a dirty antenna.
Recommended checks:
Record the exact message and the affected tank.
Inspect the antenna using the prescribed safety procedure.
Check whether the measurement returns to normal after approved cleaning and system checks.
Escalate persistent faults to qualified service personnel.
These are documented messages in the EMx40 maintenance guide; they should not be treated as a complete list of all possible EM940 alarms.
Possible cause: Water ingress or insulation loss in the terminal box, a corroded connection board, damaged cable entries or a problem in the external safety or communication equipment.
Recommended checks:
Check the compatible safety unit and associated system indications first.
Inspect the terminal box and cable entries for evidence of moisture ingress.
Check gasket and packing-gland condition.
Have qualified personnel assess the connecting board and wiring if the fault remains.
Do not disconnect or reconnect hazardous-area equipment while energised.
Possible cause: Incorrect calibration, a defective pressure sensor, water ingress or a fault in the associated pressure-measurement arrangement.
Recommended checks:
Compare the reading with approved independent measurements where available.
Check the configured sensor variant and pressure range.
Review the calibration record.
If the reading remains outside the specified range, follow the pressure-sensor calibration and replacement instructions in the applicable maintenance manual.
Honeywell’s maintenance guide identifies a defective pressure sensor as a possible cause of pressure readings outside the expected range.
A qualified technician should confirm the pressure-sensor variant, inspect the relevant connections and perform the approved diagnostic procedure before replacing the sensor.
Possible cause: A damaged cover gasket, loose terminal-box cover, failed cable-entry seal or deteriorated packing gland.
Recommended checks:
Isolate equipment as required by the manufacturer’s safety procedure.
Inspect the enclosure and sealing surfaces.
Replace damaged seals with the correct specified parts.
Check the condition of affected electrical connections and the connecting board.
Restore the enclosure correctly before returning equipment to service.
Possible cause: A radar transmitter fault, supply problem, communication issue or damage to the instrument.
Recommended checks:
Check the associated safety unit and system indications.
Confirm the correct supply and wiring using the applicable documentation.
Record the fault history and tank identity.
Follow the EMx40 troubleshooting guide before deciding whether the complete radar must be replaced.
Safety warning: The EM940 is intended for use in specified hazardous areas. Opening the enclosure, removing the radar, isolating pressure or inert-gas connections, calibration and replacement must be performed by qualified personnel under the vessel’s approved safety procedures.
The EMx40 maintenance manual documents the following observations and messages for relevant radar and system configurations:
“Wrong” — associated in the manual with a dirty antenna.
“LowS” — also associated with a dirty antenna in the manual.
Faulty or lost level measurement — may result from a dirty antenna or a radar transmitter that is out of service.
Communication fault — may be related to water ingress, insulation loss, a corroded connecting board or external system equipment.
Pressure out of range — may indicate a defective pressure sensor.
Faulty pressure measurement — the manual identifies incorrect calibration as a possible cause.
The exact display behaviour and available diagnostic messages depend on the installed monitoring system and its version. Record the full message and consult the applicable manual rather than relying on a generic alarm list.
Regular maintenance helps protect measurement reliability and the integrity of the hazardous-area installation.
Inspect the radar antenna regularly and clean it only by the approved method.
Check the tightness and condition of terminal-box covers and cable entries.
Inspect cover gaskets, sealing rings and packing-gland seals whenever the enclosure is opened.
Investigate signs of water ingress or corrosion promptly.
Keep the pressure sensor calibrated according to the relevant maintenance procedure.
Check the correct operation of the associated safety unit and communication equipment.
Maintain records of the instrument model, part number, serial number, tank identification and configuration.
When replacing a radar, verify that the replacement has the correct tank-related preset parameters.
Use only specified replacement parts and compatible components.
Follow vessel procedures and hazardous-area rules during all inspection and maintenance work.
Honeywell’s EMx40 maintenance documentation recommends regular checks, including cable-entry tightness, antenna cleanliness and terminal-box cover security. It also warns that the tank must be free of inert-gas pressure before the specified radar removal and cleaning procedures are undertaken.
SM MARINE SERVICE™ supports sourcing inquiries for Honeywell EM940 marine radar gauges, pressure sensors and associated tank-gauging spare parts, subject to availability and technical verification.
Potential requirements include:
Complete Honeywell EM940 radar level gauge
EM940 pressure sensor or compatible pressure-sensor kit
EM940 connecting board
Electronic module, where applicable and available
Antenna-related parts and protective components
Radar mounting gaskets
Terminal-box gaskets and sealing rings
Cable glands and sealing components
Compatible cables and connectors
Mounting bolts and specified hardware
Associated EMx40 system components, where confirmed compatible
Honeywell’s maintenance documentation lists a pressure-sensor kit for the EM940 and identifies connecting-board, gasket and sealing-related parts. The correct ordering code depends on the specific version and configuration.
SM MARINE SERVICE™ can check sourcing options for:
New equipment
Used equipment
Refurbished equipment
Reconditioned equipment
Tested working equipment
Availability, condition, test status, warranty, lead time and shipping arrangements must be confirmed individually. No stock status or price is implied by this article.
To help identify the correct item, provide:
A clear photograph of the instrument nameplate.
The model EM940 and visible part number 053372.
The serial number and tag number, if available.
The exact requirement: complete radar, pressure sensor, connecting board or another component.
The associated system configuration and tank identification.
A description of the fault or reason for replacement.
The destination country and required quantity.
The EM940 may require tank-specific preset parameters. Before replacing a complete radar, confirm the correct configuration and compatibility with the vessel’s existing tank-gauging system.
Marine cargo-tank gauging equipment contributes to safe and efficient cargo operations. Selecting a replacement solely because the model name looks similar can lead to incompatibility, incorrect configuration or unnecessary downtime.
For the photographed unit, the key identification details are:
Model: EM940
Part number: 053372
Nameplate description: Pressure Sensor
Certification reference: LCIE 05 ATEX 6087X
Associated system family: Honeywell EMx40
These details should be included in spare-parts inquiries. The final selection must also account for the pressure-sensor version, calibration range, instrument revision, tank configuration and required hazardous-area approval.
The Honeywell EM940 is a marine FMCW radar level gauge used for non-contact measurement of liquid cargo in compatible tanker cargo tanks. It also incorporates inert-gas pressure measurement.
The supplied photograph shows EM940, P/N 053372, and the nameplate description PRESSURE SENSOR. Confirm with the supplier whether the requested replacement is this pressure-sensor component or the complete radar assembly.
The product is branded Honeywell. The photographed nameplate states Honeywell Kft. and displays a Bourges, France address. That address does not independently establish the manufacturing country of the individual unit.
Honeywell’s published EM940 datasheet lists a range of 600 mm to 42,000 mm, with 1 mm resolution. Actual use depends on the installed configuration and application.
Yes. Honeywell describes the EM940 as incorporating an inert-gas pressure transmitter. The exact pressure range and calibration must be verified for the individual pressure-sensor version.
Honeywell’s published comparison identifies integrated inert-gas pressure measurement on the EM940, while the EM540 does not include that same integrated IG pressure measurement function. Other differences, including process connection and temperature limits, should be checked against the relevant model datasheets.
Documented EMx40 troubleshooting areas include dirty antenna, faulty or lost level measurement, “Wrong” or “LowS” messages, communication faults, water ingress, connecting-board corrosion, incorrect pressure calibration and a defective pressure sensor.
The EMx40 maintenance manual includes procedures for EM940 pressure-sensor calibration and replacement. These procedures should be performed by qualified personnel using the correct tools and safety precautions.
Availability depends on the exact model, revision and supplier stock. Contact SM MARINE SERVICE™ to inquire about new, used, refurbished, reconditioned or tested equipment and compatible spare parts.
SM MARINE SERVICE™ can check sourcing options for used or refurbished EM940 equipment, subject to availability. Ask for the condition, test status, configuration, certification details and warranty terms before purchase.
Honeywell’s published EM940 datasheet identifies the MT5016 technical manual, MI5016 installation manual and MM5016 maintenance manual. The official product page and the available maintenance-manual resource are listed below. Always check that the revision applies to the installed instrument.
SM MARINE SERVICE™ accepts international sourcing inquiries for marine radar gauges, pressure sensors and related marine spare parts. Availability, compatibility and shipping arrangements are confirmed individually.
Honeywell EM940 Radar Level Gauge with Pressure Sensor, P/N 053372, is a marine cargo-tank gauging instrument designed for non-contact liquid-level measurement and inert-gas pressure monitoring. The EM940 uses 10 GHz FMCW radar technology and is specified for compatible marine tanker installations. SM MARINE SERVICE™ supports sourcing inquiries for complete EM940 units, pressure sensors and related spare parts, subject to availability and technical verification.
The following resources were located during research. Honeywell’s official product page and datasheet are the preferred starting points. The maintenance manual link below is hosted by a third party and should be checked against the current manufacturer revision before use.
Honeywell EM540 & EM940 Radar Level Gauge
This manual includes EM940 troubleshooting, antenna cleaning, pressure-sensor calibration and replacement, connecting-board maintenance, and spare-parts information.
EMx40 Installation Manual — MI5016E
Request the applicable MI5016E installation manual from Honeywell or its authorised support channel. A verified official direct-download URL for this manual was not established during this research.
EMx40 Technical Manual — MT5016 / MT5016E
The Honeywell EM940 datasheet references the MT5016 technical manual. Request the appropriate revision for the installed system from Honeywell or an authorised service provider. A verified official direct-download URL was not established during this research.
Documentation note: Do not use a generic wiring diagram or a manual for a different radar or pressure-sensor version as a substitute for the correct installation and maintenance instructions.
SM MARINE SERVICE™
Marine Automation & Navigation Equipment Supplier
Available Condition:
• New Equipment • Used Equipment • Refurbished Equipment • Reconditioned Equipment
Stock Location:
• Bangladesh • China
Services:
• Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
Contact Information
SM MARINE SERVICE™ Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: www.smmarineservice.com
0
BDT 0
BDT 0
BDT 0
BDT 0
Marine Equipment Supplier