Description
The Generator Oil Pressure Sensor series provides high-precision analog sensing, digital pressure transduction, and low-oil warning switching designed to safeguard industrial diesel generators, heavy earthmoving equipment, and marine auxiliary power units. Covering industry-standard configurations—including VDO 0–10 Bar senders (622-337 / 622-333), Caterpillar piezoelectric sensors (194-6722 / 320-3064), Volvo Penta transducers (20484678 / 24424110), Deutz electronic switches (04199823 / 04215774 / 01182702), Cummins DCEC 3968300, and Bobcat 6674315 series—this master collection ensures real-time lubrication telemetry. Delivering precise pressure feedback to generator AMF controllers (such as Deep Sea and ComAp) and dashboard gauges prevents catastrophic engine seizure and minimizes unplanned downtime across facilities in Bangladesh.
Technical Specifications Table
| Product Series | Generator & Heavy Equipment Oil Pressure Sensor & Sender Master Range |
| Supported Sensor Models | VDO 622-337 / 622-333 | CAT 194-6722 / 320-3064-C01 | Volvo 20484678 / 24424110 | Deutz 04199823 / 04215774 / 01182702 | Cummins 3968300 | Bobcat 6674315 |
| Operating Pressure Ranges | 0 to 10 Bar (0 to 145 PSI / 0 to 1000 kPa) | High-Pressure Transducers up to 30 Bar Peak |
| Electrical Resistance Output | Standard VDO 10 to 184 Ohms (Analog Variable Resistance) |
| Electronic Transducer Output | 0.5V to 4.5V Ratiometric / Linear Voltage Signal (Piezoelectric Varistor) |
| Low-Pressure Alarm Contact | Normally Closed (NC) / Closes with Falling Pressure at 0.8 ± 0.3 Bar or 5.2 ± 0.5 Bar |
| Operating Voltage Range | 6V to 24V DC / 5V DC Regulated Transducer Input |
| Mounting Thread Sizes | 1/8-27 NPT | M10 x 1 Tapered | M14 x 1.5 | M18 x 1.5 with Elastomeric O-Ring |
| Electrical Terminals | Dual-Pole Screw Studs (G & WK) | 6.3 mm Faston Blade | Packard / Deutsch Weatherproof Connectors |
| Engine Compatibility | Cummins, Deutz, Caterpillar, Volvo Penta, Perkins, Doosan Daewoo, Bobcat, Yanmar |
| Body Materials | Machined Solid Brass, Zinc-Plated Alloy Steel, and High-Temp PA66 GF30 Thermoplastic |
| Operating Temperature | -25°C to +120°C (-13°F to +248°F) Heavy-Duty Engine Bay Class |
| Warranty Coverage | 12-Month Standard Manufacturer Replacement Warranty |
⚙️ Engineering & Technical Compatibility Verification
Verify thread pitch dimensions, analog Ohm curves, and alarm contact trigger pressures prior to wiring your Generator Oil Pressure Sensor. Learn more about Engine Oil Pressure Monitoring Principles for technical validation.
Precision Telemetry & Critical Low-Pressure Shutdown Defense
In continuous and standby generator installations, loss of oil pressure is the leading cause of bearing spin, crankshaft scoring, and total engine seizure. A high-quality Generator Oil Pressure Sensor serves dual protective roles: providing proportional resistive or voltage output for continuous digital telemetry on generator controller displays, while simultaneously acting as an instantaneous low-pressure safety trip switch.
The dual-terminal design (such as VDO 622-337 and 622-333) features an isolated terminal for the continuous gauge signal alongside a dedicated warning contact terminal that grounds immediately when oil pressure drops below critical limits ($0.8\text{ bar}$ nominal). For electronically governed common rail engines, solid-state transducers (such as Caterpillar 194-6722, Volvo 20484678, and Deutz 04215774) provide millivolt-level accuracy directly to the engine ECU, enabling dynamic fueling adjustments and proactive maintenance alerting across mission-critical power setups in Bangladesh.
- Multi-Brand Application: The Generator Oil Pressure Sensor master series accommodates engines across Cummins, Deutz, Caterpillar, Volvo, Perkins, and Bobcat equipment.
- Dual-Action Monitoring: Combines continuous analog resistance measurement (0–10 Bar) with a dedicated fail-safe emergency shutdown switch.
- High-Vibration Immunity: Solid-state and heavy-gauge mechanical internals resist engine block vibration without contact chatter or false alarms.
- Leak-Free Engine Port Sealing: Precision NPT tapered threads and metric O-ring seals prevent high-pressure oil seepage under continuous heat.
- Reduced Operating Costs: Prevents catastrophic engine failures through early anomaly detection, saving millions in emergency overhaul expenses.
Frequently Asked Questions (FAQ)
Q1: What is the price of a Generator Oil Pressure Sensor in Bangladesh?
A: Prices vary based on sensor architecture, ranging from standard VDO analog senders (around ৳ 800–৳ 1,200) to specialized electronic transducers for Caterpillar, Volvo, or Deutz. Contact our sales department at Merlin Tech Ltd directly for an official commercial quote.
Q2: What is the difference between single-pole and dual-pole oil pressure senders?
A: Single-pole senders share a common chassis ground with only one terminal for the gauge. Dual-pole senders (like the 622-337) have two isolated terminals: one for continuous gauge reading (G) and one for the low-pressure emergency shutdown alarm (WK).
Q3: How do I know if my engine uses an analog resistive sender or a voltage transducer?
A: Standard digital generator controllers (DSE, ComAp, SmartGen) typically connect to 10–184 Ohm resistive senders (VDO standard). Modern Tier 3/Tier 4 electronic ECU engines (CAT, Volvo, Deutz) use 3-wire 5V transducers (like the 194-6722 / 20484678) that output a 0.5V–4.5V ratiometric signal.
Q4: Can this Generator Oil Pressure Sensor be used for fuel or air pressure?
A: Yes, heavy-duty 10 Bar sensors are sealed to measure non-corrosive media including engine oil, diesel fuel lines, and compressed air systems.
Q5: How often should an engine oil pressure sensor be tested or replaced?
A: Sensors should be inspected during annual generator load bank testing or when errant dashboard readings or false low-oil warning trips occur.
Q6: Where can I buy authentic generator oil pressure sensors in Bangladesh?
A: You can purchase 100% genuine VDO, Deutz, Caterpillar, Cummins, and Volvo generator sensors directly from Merlin Tech Ltd with full warranty backing.






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