AMP-WM2THC
Surface Temperature & Ambient Humidity/Temperature Sensor for Bus DuctsA compact, magnetically mounted wireless sensor that watches bus duct joints around the clock. It measures the surface temperature of the joint plus ambient humidity and temperature, and alerts you to abnormal temperature rise before it turns into a failure.
- Compact magnetic device that installs in seconds, with no drilling or tools
- Surface temperature -20°C to 150°C, ambient -20°C to 85°C, humidity 0–95%
- 50 m wireless range with AES-128 encrypted data
- Battery-powered, with a lifespan of up to 10 years and 24/7 hotspot detection
Prevent bus duct failures with continuous thermal monitoring
Excessive temperature inside a bus duct is often the first sign of electrical overloading, deteriorating connections or rising contact resistance. Left undetected, prolonged overheating degrades insulation and increases the risk of faults, short circuits, equipment damage and fire.
Bus duct joints are especially critical. They carry heavy loads and face mechanical and thermal stress: vibration, seismic activity and movement can loosen joints, while repeated expansion and contraction with changing load and ambient temperature further affect joint integrity and create localised hot spots.
The AMP-WM2THC gives you continuous, real-time visibility of these connections. Timely temperature data, alarms and alerts help maintenance teams spot developing problems early, supporting predictive maintenance, fewer unplanned outages, safer operation and longer asset life.
How it works
- Panel temperature sensorOn the back of the unit, in direct contact with the bus duct surface through the magnetic mount.
- Humidity sensorOn the front face, measuring ambient relative humidity and temperature around the joint.
- Smart samplingMeasures every 60 seconds by default and senses every 20 seconds. If a temperature-rise trigger is reached, it sends event data straight away.
- Secure wireless linkData is encrypted with AES-128 and sent to a BBC969-485RC, BBC969-27C or AMP-IoTG.
| General | |
|---|---|
| Model number | AMP-WM2THC |
| Product type | Sensor & RF transmitter |
| Sensors | Digital temperature sensor (internally calibrated) and ambient RH/temperature sensor |
| Mounting | High-temperature-withstand magnetic mount |
| Installation location | Bus ducts, electrical panels, switchgear, MCC panels, control panels |
| Enclosure | IP65, PA66+GL, withstands up to 200°C |
| Battery | 1200 mAh, 3.6 V · lifespan up to 10 years |
| Measured values | |
| Surface temperature range | -20°C to 150°C |
| Surface temperature accuracy | ±0.5°C (0–85°C), ±0.75°C (above 85°C) |
| Ambient RH / temperature range | Humidity 0–95% · Temperature -20°C to 85°C |
| RHT accuracy | Humidity ±2% (10–90%), ±3% (<10% or >90%) Temperature ±0.2°C (0–70°C), ±0.6°C (above 70°C) |
| Communication | |
| Communication range | 50 m (wireless) |
| Frequency | 865–926 MHz |
| Transmission interval | 1 minute default, configurable up to 5 minutes through the receiver |
| Antenna | Inbuilt |
| Supported controllers / gateway | BBC969-485RC, BBC969-27C, AMP-IoTG |
| Data encryption | AES-128 |
| Mechanical | |
| Dimensions (L × W × H) | 45 × 45 × 30 mm |
| Weight | 50 g |
Value for every team that keeps power flowing
- Continuous visibility of critical electrical assets and connections
- Lower CAPEX and OPEX with less reliance on periodic thermography
- Less need for people to work near energised equipment
- Catch emerging thermal issues before costly failures and downtime
- Better asset performance, reliability and lifecycle ROI
- Extend asset life with condition-based maintenance
- No more manual checks at inaccessible connection points
- Move from reactive to proactive asset management
- Monitor connection temperatures accurately and spot anomalies early
- Make maintenance decisions on real-time data
- Continuously monitor critical connections and assets
- Detect temperature rise and compromised joints before they become critical
- Reduce the risk and cost of unplanned outages
- Get real-time alarms when thresholds are exceeded
- Improve reliability with constant visibility of infrastructure health
Supported controllers and gateway
Panel-mount controller with a colour display, buzzer and two alarm relays.
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DIN-rail receiver that sends sensor data over RS485 Modbus to SCADA, PLC or BMS.
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4G gateway that sends sensor data to the cloud for dashboards and alerts.
View productProtect every bus duct joint
Tell us about your bus duct runs and panels, and we'll plan the right number of sensors, receivers and integration for your site.
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