Model MODBUS CO₂ and pressure sensor TSM400-4-CP

TSM400-4-CP is a combined CO₂ and barometric pressure sensor with a MODBUS RTU interface.

Short Description

CO₂ (Carbon dioxide) is a colourless and odourless gas. It is the fourth most present gas in the Earth’s atmosphere. Its concentration, especially indoors, is important for the health and efficiency of the people in them.

TSM400-4-CP is a multi parameters 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. NDIR is recently the most popular principle for CO₂ concentration measuring. The 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.

The 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 with a maximum installation opening of 61 mm.

The combined CO₂ and barometric pressure sensor can be used with

• 4G LTE universal IO moduleTCG140-4G
• Energy monitoring moduleTCW260
• GSM-GPRS remote IO moduleTCG140
• Third-party controllers

Features

• LED indicator for status of communication;
• Long-term stability based on digital signal processing;
• Self-calibration on fresh air for CO₂ measurements;
• Changeable communication parameters;
• Non-volatile memory for all settings;
• Firmware update via the interface.

Warranty period: 3 years

Sensor Comparison Table: Link

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Click here for Manual: Link

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