KUS Marine Oil Temperature Sensor / Transmitter Type 3 – Precise Measurement for Engine & Transmission Oil with a 120°C Alarm
Effectively protect your valuable powertrain from thermal overload! The original KUS oil temperature sensor (Type 3) continuously measures the exact heat build-up in your engine oil or transmission lubrication system. It converts the temperature values into the standardized analog resistance range of 300 to 23 ohms. This makes it the perfect, error-free sensor partner for all analog and digital KUS oil temperature gauges (50–150°C) at the helm.
What sets the highly advanced Type 3 model apart is that the sensor features an integrated, separate warning contact (alarm switch). As soon as the oil reaches the critical threshold of 120°C, the contact closes automatically. This allows you to activate a separate red warning light or an acoustic KUS warning buzzer in the cockpit—in addition to the temperature gauge—to prevent an impending loss of the lubricating film in a timely manner.
⚠️ Important note on sensor compatibility & thread selection:
This temperature sensor provides the standard KUS characteristic curve of approximately 300 ohms at 50°C to 23 ohms at 150°C. Please select the exact thread size that matches your engine block or marine transmission from the drop-down menu above:
- M14 x 1.5 thread (metric fine-pitch thread, integrated 120°C alarm)
- Thread M16 x 1.5 (metric fine thread, built-in 120°C alarm)
- 3/8" - 18 NPT (American tapered pipe thread, built-in 120°C alarm)
Advantages & Technical Highlights at a Glance:
- Integrated 120°C warning contact: Maximum motor protection through simultaneous analog measurement and visual/acoustic alarm triggering (2-pole connection).
- Robust brass housing: Excellent thermal conductivity for extremely fast response times during sudden temperature spikes, as well as absolute resistance to aggressive, hot oils and chemicals.
- Fully encapsulated IP67 protection class: The sensor head and connection contacts are completely dust- and watertight—optimally protected against splashing water, oil, and bilge moisture.
- Universal marine use: Fully compatible with all engine oils, transmission oils, shaft lubricants, and hydraulic fluids in 12-volt and 24-volt onboard systems.
🛠️ Accessory tip from Tenten-Boats:
Don’t forget the right gauge! Order the visually perfectly matched, saltwater-resistant KUS analog oil temperature gauge (52mm) right along with it to ensure seamless lubricant monitoring in your cockpit.
Technical Data (Specifications):
| Property | Specification / Value |
|---|---|
| Manufacturer / Brand | KUS |
| Sensor Type | Type 3 (Analog Measurement + Digital Alarm Contact) |
| Output Signal (Resistance) | 300–23 ohms Characteristic curve (KUS temperature standard) |
| Measuring Range | +50°C to +150°C |
| Alarm threshold | 120°C ± 3°C (Integrated warning contact) |
| Housing Material | High-quality, thermally conductive marine brass |
| Protection rating | IP67 (waterproof and dustproof at the connector head) |
| Item information | Value |
|---|---|
| Manufacturer: | KUS |
| Category: | KUS Instruments |
| SKU: | 33101-A |
| Shipping weight: | 0,20 kg |
| Item weight: | 0,10 kg |