- EN
| Parameter | Specification |
|---|---|
| Product Name | Hyundai Pressure Sensor |
| COGENG Part Number | 31Q4-40830 |
| OEM Equivalent | Hyundai 31Q4-40830 |
| Product Type | Hydraulic Pressure Sensor |
| Sensor Type | Piezoresistive pressure transducer |
| Output Type | 4-20 mA or 0.5-4.5V (application dependent) |
| Application | Hydraulic system pressure monitoring |
| Compatible Models | Hyundai R140W-9, R170W-9, R180W-9 Wheel Excavators |
| 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 | 31Q4-40830 |
| Hyundai | 31Q4-40830 |
| Interchange | 31Q4-40831, 31Q4-40832, 31Q4-40833 |
| 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 - 350 bar (0 - 5,075 psi) typical |
| Measurement Type | Gauge pressure (relative to atmosphere) |
| Accuracy | ±1.0% to ±2.0% of full scale |
| Overpressure Limit | 525 bar (7,600 psi) |
| Burst Pressure | 875 bar (12,700 psi) |
| Compensated Temperature | -40°C to +105°C |
| Parameter | Specification |
|---|---|
| Connector Type | 3-pin Deutsch DT / AMP |
| Mounting Thread | 7/16-20 UNF or M12 × 1.5 (OEM spec) |
| Hex Size | 19 mm (3/4") or 22 mm (7/8") |
| Housing Material | Stainless steel / Zinc-nickel plated steel |
| Diaphragm Material | 17-4PH stainless steel |
| Seal Material | NBR / FKM (Viton) |
| Weight | 0.10 - 0.15 kg (0.22 - 0.33 lbs) |
| Overall Length | 55-65 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 |
| Pressure (bar) | Pressure (psi) | Output (mA) | Condition |
|---|---|---|---|
| 0 | 0 | 4.0 ±0.1 | No pressure |
| 87.5 | 1,269 | 8.0 ±0.1 | Low pressure |
| 175 | 2,538 | 12.0 ±0.1 | Medium pressure |
| 262.5 | 3,806 | 16.0 ±0.1 | High pressure |
| 350 | 5,075 | 20.0 ±0.1 | Maximum pressure |
| Pressure (bar) | Pressure (psi) | Output (V) | Condition |
|---|---|---|---|
| 0 | 0 | 0.5 ±0.1 | No pressure |
| 87.5 | 1,269 | 1.5 ±0.1 | Low pressure |
| 175 | 2,538 | 2.5 ±0.1 | Medium pressure |
| 262.5 | 3,806 | 3.5 ±0.1 | High pressure |
| 350 | 5,075 | 4.5 ±0.1 | Maximum pressure |
| 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, diesel fuel |
| Corrosion Protection | 500+ hours salt spray |
| Parameter | Specification |
|---|---|
| Model | Hyundai R140W-9 Wheel Excavator |
| Type | 14-ton Wheel Excavator |
| Series | Dash 9 |
| Application | Hydraulic system pressure monitoring |
| Parameter | Specification |
|---|---|
| Model | Hyundai R170W-9 Wheel Excavator |
| Type | 17-ton Wheel Excavator |
| Series | Dash 9 |
| Application | Hydraulic system pressure monitoring |
| Parameter | Specification |
|---|---|
| Model | Hyundai R180W-9 Wheel Excavator |
| Type | 18-ton Wheel Excavator |
| Series | Dash 9 |
| Application | Hydraulic system pressure monitoring |
| Application | Pressure Range | Function |
|---|---|---|
| Main Pump Pressure | 0-350 bar | Monitors main hydraulic pump output |
| Implement Pressure | 0-350 bar | Monitors boom/arm/bucket circuits |
| Pilot Pressure | 0-50 bar | Monitors pilot control pressure |
| Swing Circuit | 0-350 bar | Monitors swing brake/pressure |
| Travel Circuit | 0-350 bar | Monitors wheel travel motor pressure |
| Steering Circuit | 0-200 bar | Monitors steering system pressure |
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