NDIR Transmitter Board0 pages

Technical Specification

IRC-TX
NDIR CO2 Transmitter Board

Top view

Base view

Both 4-20mA and USB output
Uses Alphasense IRC-A1 NDIR cell
Adjustable bulb voltage to optimise long-term stability vs. resolution

Four ranges

0-5,000ppm
0-5% vol CO2
0-20% vol CO2
0-100% vol CO2

Please specify required range when ordering

Excellent linearity/accuracy ±50ppm from 5,000ppm at 20oC using generic linearisation
Full sensor specification

see IRC-A1 data sheet

USB interface

plugs directly into PC for simple data capture

4-20mA output

4-wire or 2-wire and separate power supply (2.1mm DC socket)

Power options

USB port (4-20mA output switched off)
2.1mm DC socket 7 to 40VDC
Molex connector 7 to 40VDC

At the end of the product’s life, do not dispose of any electronic sensor, component or instrument in the domestic waste, but contact the
instrument manufacturer, Alphasense or its distributor for disposal instructions.
NOTE: all sensors are tested at ambient environmental conditions, with 47 ohm load resistor, unless otherwise stated. As applications of use are outside our control, the
information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements.

Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UK
Telephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: sensors@alphasense.com Website: www.alphasense.com