Teracom TSM400-4-CP MODBUS CO2 and pressure sensor
TSM400-4-CP is a multi-parameter sensor that supports MODBUS RTU protocol over the RS-485 interface. The sensor measures barometric pressure and CO2 concentration. MODBUS device integrates an advanced non-dispersive infrared sensing element (NDIR) for CO2 measurements. The measurement principle is based on the absorption of infra-red (IR) light with specific wavelengths by CO2 molecules. The CO2sensing element is realized with built-in humidity and temperature for better accuracy. Self-calibration is available for carbon dioxide measurements. It is done if the sensor is left in fresh (around 400 ppm CO2 concentration) air. The basic sensing element for barometric pressure is factory calibrated and it does not require any lifetime recalibration. MODBUS CO2 and pressure sensor TSH400-4-CP is housed in a slim plastic enclosure. The bottom part of the enclosure is suitable for installation on standard flush-mounted/cavity wall boxes ø68mm, with installation openings on 61 mm.
Features:
• LED indicator for status of communication
• Long-term stability based on digital signal processing
• Self-calibration on fresh air for CO2 measurements
• RS-485 interface carrying up to 32 nodes
• Changeable bitrate and other communication parameters
• Firmware update via the interface.
Applications:
• Indoor air quality (IAQ)
• CO2 storage facilities leakage control
• Smart ventilation systems
• Restaurants and breweries CO2 level monitoring
MODBUS CO2 and pressure sensor can be used with:
• 4G LTE universal IO module TCG140-4
• Energy monitoring module TCW260
• GSM-GPRS remote IO module TCG140
• Third-party controllers
| Specifications | |
| Dimensions | 81 x 81 x 30 mm |
| Weight | 66g |
| Operating temperature range | -20 to 60°C |
| Operating relative humidity range |
5 to 95% (non-condensing) |
| Storage temperature range |
-20 to 60°C |
| Storage relative humidity range |
5 to 95% (non-condensing) |
| Ingress protection | IP20 |
| Operating voltage range (including -15/+20% according to IEC 62368-1) |
4.5 to 26 VDC |
| Current consumption | 25 mA@5VDC (Peak: 150mA@5VDC) |
| CO2 measurements | |
| Range | 400 to 5000 ppm |
| Accuracy | ± (40 ppm + 5 %) |
| Resolution | 1 ppm |
| Range | 10 to 1200 hPa |
| Accuracy (min.) | ±1.5 (25°C, 750 hPa) |
| Accuracy (max.) | ±2.5 (-20°C to + 85°C, 300 to 1100 hPa) |
| Resolution | 1 hPa |
