| Parameter | Specification |
|---|---|
| Product Name | 400 Bar Pressure Sensor |
| COGENG Part Number | 692837214 |
| OEM Equivalent | Liebherr 692837214 |
| Product Type | High Pressure Hydraulic Sensor |
| Sensor Type | Piezoresistive pressure transducer |
| Pressure Range | 0 - 400 bar (0 - 5,800 psi) |
| Output Type | 4-20 mA or 0.5-4.5V (application dependent) |
| Application | Hydraulic system high pressure monitoring |
| Compatible Equipment | Liebherr Excavators, Wheel Loaders, Crawler Tractors, Heavy Equipment |
| Material | Iron + Rubber (seals: NBR / FKM) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Supply Capacity | 500 PCS |
| Brand | Part Number |
|---|---|
| COGENG | 692837214 |
| Liebherr | 692837214 |
| Interchange | 692837215, 692837216, 692837217, 692837218, 511432714 |
| Parameter | Specification |
|---|---|
| Supply Voltage | 8-36V DC (typically 24V system) |
| Output Signal | 4-20 mA (current loop) or 0.5-4.5V analog |
| Current Draw | ≤ 25 mA |
| Response Time | < 5 ms |
| Insulation Resistance | ≥100MΩ @ 500V DC |
| Reverse Polarity Protection | Yes |
| Overvoltage Protection | Yes |
| Parameter | Specification |
|---|---|
| Pressure Range | 0 - 400 bar (0 - 5,800 psi) |
| Measurement Type | Gauge pressure |
| Accuracy | ±1.0% of full scale |
| Overpressure Limit | 600 bar (8,700 psi) |
| Burst Pressure | 1,000 bar (14,500 psi) |
| Compensated Temperature | -40°C to +105°C |
| Pressure (bar) | Pressure (psi) | Output (mA) | Condition |
|---|---|---|---|
| 0 | 0 | 4.0 ±0.1 | No pressure |
| 100 | 1,450 | 8.0 ±0.1 | Low pressure |
| 200 | 2,900 | 12.0 ±0.1 | Medium pressure |
| 300 | 4,350 | 16.0 ±0.1 | High pressure |
| 400 | 5,800 | 20.0 ±0.1 | Maximum pressure |
| Pressure (bar) | Pressure (psi) | Output (V) | Condition |
|---|---|---|---|
| 0 | 0 | 0.5 ±0.1 | No pressure |
| 100 | 1,450 | 1.5 ±0.1 | Low pressure |
| 200 | 2,900 | 2.5 ±0.1 | Medium pressure |
| 300 | 4,350 | 3.5 ±0.1 | High pressure |
| 400 | 5,800 | 4.5 ±0.1 | Maximum pressure |
| Parameter | Specification |
|---|---|
| Connector Type | 3-pin Deutsch DT / AMP |
| Mounting Thread | 7/16-20 UNF or M12 × 1.5 (Liebherr spec) |
| Hex Size | 22 mm (7/8") |
| Housing Material | Stainless steel / Zinc-nickel plated steel |
| Diaphragm Material | 17-4PH stainless steel |
| Seal Material | NBR / FKM (Viton) - Leak-proof design |
| Weight | 0.12 - 0.18 kg (0.26 - 0.40 lbs) |
| Overall Length | 60-70 mm |
| Pin | Function | Signal Type | Wire Color (Typical) |
|---|---|---|---|
| Pin 1 | Sensor Supply (+) | 24V DC | Red |
| Pin 2 | Sensor Signal | 4-20 mA or 0.5-4.5V | Yellow/White |
| Pin 3 | Sensor Ground (-) | 0V | Black |
| Parameter | Rating |
|---|---|
| Operating Temperature | -40°C to +105°C (-40°F to +221°F) |
| Storage Temperature | -40°C to +125°C (-40°F to +257°F) |
| Ingress Protection | IP67 / IP69K (connector mated) |
| Vibration Resistance | 20G @ 50-2000Hz |
| Shock Resistance | 100G |
| Media Compatibility | Hydraulic oil |
| Corrosion Protection | 500+ hours salt spray |
| Leakage Rating | Zero (leak-proof design) |
| Model Series | Models | Application |
|---|---|---|
| R9 Series | R914, R916, R920, R924, R926 | High pressure monitoring (400 bar) |
| R93 Series | R934, R936, R940, R944 | High pressure monitoring |
| R95 Series | R954, R964, R974, R980 | High pressure monitoring |
| R99 Series | R996, R9800 | High pressure monitoring |
| Model Series | Models | Application |
|---|---|---|
| L5 Series | L506, L508, L509, L514, L518 | High pressure monitoring |
| L5 Series | L524, L526, L530, L538, L542, L546, L550, L556 | High pressure monitoring |
| L5 Series | L566, L576, L578, L580, L586 | High pressure monitoring |
| Model Series | Models | Application |
|---|---|---|
| PR7 Series | PR734, PR736, PR744, PR746 | High pressure monitoring |
| PR7 Series | PR754, PR756, PR764, PR766, PR776 | High pressure monitoring |
| Model Series | Models | Application |
|---|---|---|
| LH Series | LH 30, LH 40, LH 50, LH 60, LH 80, LH 100, LH 110, LH 120 | High pressure monitoring |
| Application | Pressure Range | Function |
|---|---|---|
| Main Pump Pressure | 0-400 bar | Monitors main hydraulic pump output |
| Implement Pressure | 0-400 bar | Monitors boom/arm/bucket circuits |
| Swing Circuit | 0-400 bar | Monitors swing brake/pressure |
| Travel Circuit | 0-400 bar | Monitors travel motor pressure |
| Attachment Circuit | 0-400 bar | Monitors auxiliary hydraulic pressure |
Technical Specifications
| Parameter | Value |
|---|---|
| Type | Hydraulic pressure sensor / pressure switch |
| Output Signal | Analog or switching (verify with original) |
| Thread Size | Typically M10×1, M12×1.5, or M14×1.5 (confirm before ordering) |
| Pressure Range | Typically 0–250 bar / 0–400 bar |
Installation Tips
Clean the mounting port before installation
Check O-ring/sealing washer condition
Tightening torque: 20–30 Nm (do not over-tighten)
Use thread sealant if required by application
Frequently Asked Questions
Q: What Liebherr models use the 692837214 pressure sensor?
A: The COGENG 692837214 pressure sensor is a direct OEM replacement designed for a comprehensive range of Liebherr crawler excavator models including R920, R924, R930, R934, R944, R954, R956, R960, R964, R966, R970, R974, R976, and R980. This hydraulic oil pressure transducer is critical for monitoring hydraulic system pressure and providing real-time feedback to the machine's electronic control system. Always verify this part number against your machine's parts manual or the original sensor's identification markings to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing hydraulic pressure sensor on a Liebherr excavator?
A: Common symptoms include inaccurate or erratic hydraulic pressure readings on the display panel, active diagnostic trouble codes related to the pressure sensor circuit, degraded hydraulic performance or unexpected power reduction, the machine entering a failsafe or limp mode, intermittent hydraulic function response, or the engine control system failing to properly match engine speed to hydraulic load demand. On large Liebherr excavators, a faulty pressure sensor can significantly impact digging force, cycle times, and overall productivity.
Q: How does the hydraulic oil pressure transducer affect excavator operation?
A: The 692837214 sensor continuously monitors hydraulic system pressure and transmits real-time data to the machine's electronic control system. This information is used to manage pump displacement, engine speed matching, implement response, and system overload protection. Accurate pressure sensing is essential for smooth hydraulic operation across all digging, lifting, and attachment functions, as well as for optimizing fuel consumption on heavy machinery.
Q: Is this sensor a direct plug-and-play replacement?
A: Yes, the COGENG 692837214 pressure sensor is manufactured to exact OEM specifications for thread size, electrical connector type, pressure range, output signal characteristics, and response time. It is a direct plug-and-play replacement requiring no wiring modifications or adapters when installed on compatible Liebherr excavator models.
Q: What is the warranty coverage for this hydraulic pressure sensor?
A: COGENG provides a standard 12-month warranty against manufacturing defects from the date of installation. Proof of purchase and installation by a qualified technician are required. Warranty does not cover failure caused by hydraulic fluid contamination, over-pressurization, improper installation, overtightening, thread damage, or use on incompatible equipment.
Q: What should I check before installing the new pressure sensor?
A: Before installation, verify the hydraulic system is fully depressurized, inspect the sensor mounting port for debris or damage, check the electrical connector for corrosion or contamination, and apply the appropriate thread sealant if specified by the service manual. Torque the sensor to manufacturer specifications to prevent thread damage or hydraulic leaks. Contaminated hydraulic fluid can damage the new sensor, so verify fluid cleanliness and replace hydraulic filters if necessary.
Q: Does COGENG offer technical support for installation or troubleshooting?
A: Yes, COGENG provides complimentary technical support to assist with installation guidance and basic troubleshooting. For complex hydraulic system diagnostics on large Liebherr excavators, we recommend consulting a certified Liebherr service technician.
Q: How is the sensor protected during shipping?
A: Each COGENG 692837214 pressure sensor is individually sealed in a moisture-resistant poly bag and packed in a sturdy corrugated carton with protective foam padding. The electrical connector and sensor probe tip are capped to prevent damage during transit. Factory direct shipping ensures the product reaches you in optimal condition.
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