The TSM400-4-CPTH is a Wall-Mounted Temperature, Humidity and CO2 Sensor with a RS485 Modbus RTU interface, designed for accurate monitoring in environments like factory and office spaces, and suitable for smart applications and data logging. It offers Carbon Dioxide, Pressure, Air Temperature and Relative Humidity measurements. Features RS485 interface for up to 32 nodes with changeable bitrate, and other communications parameters. Connection via screwless terminal block.
The TSM400-4-CPTH is a multi-sensor designed to measure CO2 concentration, humidity, temperature, and barometric pressure. It communicates via RS485 Modbus RTU protocol. For CO2 measurements, the sensor incorporates an advanced non-dispersive infrared (NDIR) sensing element, a popular method based on the absorption of specific infrared light wavelengths by CO2 molecules.
The CO2 sensing element in the TSM400-4-CPTH benefits from temperature compensation for enhanced accuracy and offers a self-calibration feature that activates when the sensor is exposed to fresh air (around 400 ppm CO2). The basic sensing elements for humidity, temperature, and barometric pressure are factory calibrated and do not require re-calibration throughout their lifespan. This multi-sensor is housed in a slim plastic enclosure, with the bottom part designed for easy installation on standard flush-mounted or cavity wall boxes, accommodating openings up to 61 mm.
| Temperature | Humidity | Carbon Dioxide (CO2) | Pressure | |
| Operating Range*: | -20 to +60°C | 10 to 90%RH | 400-5,000ppm | 10 to 1,200hPa |
| Accuracy | ±0.4°C (0.6°C Max) | ±3%RH (5%RH Max) | ±(40ppm +5%) | ±1.5hPa (Max ±2.5hPa) |
| Long-Term Drift (Typical): | ±0.05°C | ±0.25%RH | ||
| Resolution: | 0.1°C | 0.1%RH | 1ppm | 0.1hPa |
| Power Supply: | 4.5 to 26vDC (5V @ 150mA) | |||
| IP Rating: | IP20 | |||
| Dimensions: | 81 x 81 x 30mm | |||
| Connectors: | Screwless Terminal Block | |||
* Recommended operating range is -10 to 60°C @ 20-80%RH. Prolonged operation beyond these ranges may result in a shift of sensor reading and slow recovery time.
TSM400-4-CPTH
£138.97
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