CO2, Humidity, and Temperature Multi-Sensor TSM400-4-CPTH

Industrial Automation Systems - Multi Sensor TSM400-4-CPT

Carbon dioxide (CO2) is a colorless and odorless gas, constituting the fourth most abundant gas in the Earth's atmosphere. Monitoring its concentration, especially in indoor environments, is crucial for maintaining the well-being and productivity of occupants.

TSM400-4-CPTH is a versatile multi-sensor equipped with MODBUS RTU protocol support via the RS-485 interface. This sensor excels at measuring CO2 concentration, humidity, temperature, and barometric pressure.

For CO2 measurements, this MODBUS device employs an advanced non-dispersive infrared sensing element (NDIR), a prevalent method for accurately gauging CO2 levels. NDIR relies on the absorption of specific wavelengths of infrared (IR) light by CO2 molecules. The CO2 sensing element is temperature-compensated for heightened accuracy.

The sensor offers self-calibration capabilities for CO2 measurements, initiated when placed in fresh air with approximately 400 ppm CO2 concentration. Moreover, the basic sensing elements for humidity, temperature, and barometric pressure come factory-calibrated, eliminating the need for lifetime recalibration.

The TSM400-4-CPTH multi-sensor is housed in a slim plastic enclosure, suitable for installation on standard flush-mounted or cavity wall boxes with a maximum installation opening of 61 mm.

Key Features:

LED indicator to signal communication status
Long-term stability achieved through digital signal processing
Self-calibration for CO2 measurements in fresh air
Configurable communication parameters
Non-volatile memory for storing settings
Firmware updates via the interface

Applications:

Indoor air quality (IAQ) monitoring
Control of CO2 leakage in storage facilities
Smart ventilation systems
Monitoring CO2 levels in restaurants and breweries

TSM400-4-CPTH is compatible with the following models:

4G LTE universal IO module TCG140-4
Energy monitoring module TCW260
GSM-GPRS remote IO module TCG140
Third-party controllers

This enhanced description provides a clearer overview of the multi-sensor's capabilities and applications.

Technical Properties:

Physical characteristics
Dimensions: 81 x 81 x 30mm
Weight: 66g
Environmental limits
Operating temperature range: -20 to 60°C
Operating relative humidity range: 10 to 90% (non-condensing)
Recommended operating range is 20% to 80% RH (non-condensing) over –10 °C to 60 °C
Prolonged operation beyond these ranges may result in a shift of sensor reading, with slow recovery time
Long term drift typical: ±0.25%RH/year, ±0.05°C/year
Higher drift might occur due to contaminant environments with vaporized solvents, adhesives, packaging materials, etc.
Storage temperature range: -20 to 60°C
Storage relative humidity range: 10 to 90% (non-condensing)
Ingress protection: IP20
Power requirements
Operating voltage range (including -15/+20% according to IEC 62368-1): 4.5 to 26VDC
Current consumption: 25 mA@5VDC (Peak: 150 mA@5VDC)
CO2 measurements
Range: 400 to 5000ppm
Accuracy: ± (40ppm + 5%)
Resolution: 1ppm
Calibration: Manual/Automatic
Pressure measurements
Range: 10 to 1200hPa
Accuracy (min): ±1.5hPa (25°C, 750hPa)
Accuracy (max): ±2.5hPa (-20°C to + 85°C, 300 to 1100hPa)
Resolution: 1hPa
Humidity measurements
Accuracy (min): ±3.0 %RH (in 20 to 80 %RH range)
Accuracy (max): ±5.0 %RH (in 10 to 90 %RH range) *
Resolution: 0.1%RH
Temperature measurements
Accuracy (min): ±0.4°C (in -10 to +60°C range)
Accuracy (max): ±0.6°C (in -20 to +60°C range)
Resolution: 0.1°C
Interface
Response time ≤ 50ms
Master response time-out ≥ Response time + Answer time
The answer time depends on the number of bits and the baud rate
Warranty
Warranty period: 3 years