HFJ-1883059 analog proximity sensor with integrated electronics, OEM part for MAN two-stroke main engine, part number 1884242-1.
This is an eddy-current type analog proximity sensor, not on-off switch type. It can continuously convert the displacement distance of the metal target into 4~20mA analog current signal. The calibrated measuring range corresponds to 4.0mA ~16.25mA.
The sensor adopts stainless steel flange installation structure, equipped with 5m TYCO CL105 2×2×0.75mm² shielded cable. It has CE certification. The target material for calibration is S19R, S45R, S35N2X steel. Widely used for exhaust valve stroke feedback, opening position continuous monitoring of MAN marine main engine, suitable for new shipbuilding and vessel spare replacement, emergency supply for ships at port.
Product Specifications
|
Model |
HFJ-1883059 |
|
MAN Part No. MAN |
1884242-1 |
|
Product Type |
Analog Eddy-Current Proximity Sensor |
|
Power Supply |
24 VDC (Nominal) |
|
Output Signal |
4 ~ 20mA, calibrated range 4.0mA ~16.25mA |
|
Cable |
5m TYCO CL105, 2×2×0.75mm², shielded |
|
Mounting Type |
Flange Mount, 4×Φ9 mounting holes |
|
Flange OD |
Φ80mm |
|
Calibration Target Material |
S19R, S45R, S35N2X |
|
Certification |
CE Mark |
|
Manufacturer |
HF JENSEN A/S |
|
Application |
MAN Main Engine Exhaust Valve Displacement Measurement |
Product Advantages
1. Eddy current analog output, continuous real-time displacement value, not only on/off signal, support valve opening closed-loop
control.
2. Original design for MAN two-stroke engine, fully interchangeable with original part 1884242-1.
3. Stainless steel body, salt spray resistance, oil resistance, strong vibration resistance to adapt main engine working condition.
4. Built-in integrated electronic circuit, stable signal, strong anti-electromagnetic interference in engine room.
5. Equipped with shielded cable, effectively reduce signal drift caused by electromagnetic noise.
6. Strict factory calibration, consistent linearity, reliable long-term monitoring.
7. Fast delivery for ship spare emergency order, bulk supply for shipyard newbuilding projects.
Working Principle
This sensor works on eddy current principle. The internal integrated electronic unit generates high-frequency
alternating magnetic field. When the metal target moves toward or away from the sensing face, eddy current
inside the metal target changes accordingly, which changes the impedance of the sensor coil. The circuit
converts this impedance variation into a proportional 4~20mA analog current signal. The current value
corresponds to the real-time gap /displacement between sensor and target, so the system can read continuous
exhaust valve position data.
Application Scenarios
MAN two-stroke marine main engine exhaust valve displacement & opening monitoring
Main engine ECS / ECU control system stroke feedback
Newbuilding cargo ship, bulk carrier, container vessel, tanker automation system
Ship engine overhaul, spare part replacement
Marine diesel engine continuous position closed-loop monitoring
Maintenance Instructions
1. Keep the sensing surface clean, remove carbon deposit, sludge and metal debris regularly. Foreign matter on sensing face
will cause signal deviation.
2. Inspect the shielded cable and connector frequently. Avoid sharp scratch, extrusion, tensile force on cable. Prevent water and
oil ingress into connector.
3. Do not knock, impact or bend the probe rod.
4. Check signal linearity during engine regular inspection; if current value drifts abnormally, inspect target and sensor.
5. Stop operation if cable sheath is broken or sensor housing is corroded and leaking.
Spare & Interchangeability
Model：HFJ-1883059
MAN OEM No.：1884242-1
Interchangeable：Direct replacement, same dimension, mounting flange, wiring definition and calibration curve as original MAN sensor.
Supply Service：Emergency spare supply for vessels in port; bulk quotation for shipyard newbuilding projects.
Acceptance Standard
1. Visual inspection: No crack, scratch, deformation; cable intact, laser marking clear.
2. Power-on test: Supply 24VDC, current output changes linearly while moving standard target. Output within calibrated
4.0~16.25mA range.
3. Cable insulation & continuity test passed, shielding intact.
4. Provide test report and certificate upon request.
FAQ
Q1: Is this a switch type proximity sensor?
A1: No. It is eddy-current analog type with 4-20mA continuous current output, for continuous displacement measurement, not just trigger on/off.
Q2: Can it replace MAN 1884242-1 directly?
A2: Yes, fully interchangeable, same flange, wiring and calibration curve, plug and replace.
Q3: What target material should be used?
A3: Calibration target: S19R, S45R, S35N2X steel. Other ferrous metal can be detected but the calibration curve will change.
Q4: What is the cable specification?
A4: 5m, TYCO CL105, 2×2×0.75mm² shielded cable as per drawing.
Q5: What is the delivery time?
A5: Stock for urgent spare order.
