CO2 Monitor - CDM 7160

Calibration-less CO2 monitor, using CDM 7160 sensor + many upgrades
80.00€
Note:

Please use the vThings - CO2 Monitor v3 item to customize and order your device



Why advanced CO2 Sensors?


Most commercially available CO2 Monitors need to see fresh air each few days in order to perform internal calibration. In the majority of use cases this is no problem as a house or office that is unoccupied for 4-5 hours equates it's CO2 with the outside levels. Yet there are use-cases where this cannot be granted or customers simply want more precise measurement, and this is where more advanced a CO2 Monitor are required.

Figaro CDM 7160

I offer 2 sensors that do not require calibration. This listing is for the CDM 7160, which is a new-generation low-power and affordable sensor. This allows to include also temperature measurement along with CO2, w/o needing some complex heat management. You can select upgrades on the top of the page.


There is a nice description from the manufacturer, that showcases the sensor's highlights - here

Upgrades

The available upgrades are:

  • Temperature / Humidity - An SI7021 sensor is included to measure Temperature + Humidity
  • Temperature / Humidity / Pressure - A BME 280 sensor in included for this
  • 315/433 Mhz - A RF sender module is included to broadcast sensor readings
  • Dust Sensor - A PM 2005 High-Quality Dust Sensor is included to measure dust levels. (Note that the Dust Sensor also emits some heat, and cannot be combined with the Temperature measuring sensors. More details here

Connectivity

As part of my HA (Home Automation) Line, this device is targeted primarily to scenarios involving Home Automation and Online Monitoring. It can be configured to send the readings in various ways over Wifi:
  • Custom URL - This can point to your HA system or to some Public online Service.
  • MQTT 
  • Predefined Online Services - Pre-defined integration with Thingspeak, IFTTT, Ubidots and Dweet.io
  • Predefined HA Systems - Integration with OpenHAB, Domotica and Domoticz

There is also an optional 433 / 315 Mhz connectivity, where the data is sent over some standard protocol

Alternatives
After spending couple of years in the CO2 measurement field i've worked with quite a few manufacturers, so i can offer few different options with different pros/cons. The table below compares the core attributes of each sensor
CDM 7160CM 1102CM 1106
Base Price75 eur70 eur60 eur
Range300-5000400-5000 (10,000)400-5000
Resolution1 ppm10 ppm1 ppm
Precision+/-80ppm @ 1000ppm
+/-110ppm @ 2000ppm
+- (50ppm + 3% of reading)
+/- 60ppm @ 1000ppm
+/- 80ppm @ 2000 ppm
+/- (40 ppm +2% of reading
+/- 100ppm @ 1000ppm
+/- 150ppm @ 2000 ppm
+/- (40 ppm +2% of reading)
Calibrationpre-calibratedpre-calibratedlowest co2 each 3 days
Power~ 8 ma~ 70 ma~ 70 ma
Upgrades
Temp/Humidity+ 2 eurn/an/a
Temp/Humidity/Pressure+ 6 eurn/an/a
315/433 mhz transmitter+ 7 eur+ 7 eurn/a
Dust Sensor+ 25 eur (1)n/an/a

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