Divex SDA CO2 Analyser

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New technology makes the Divex SDA CO2 analyser smaller and lighter whilst increasing its accuracy and cost effectiveness.

The SDA CO2 is a replacement for the G30 Carbon Dioxide Analyser.

The SDA CO2 is a rack-mountable carbon dioxide monitor for commercial diving applications. It interfaces with a dual-beam infrared CO2 sensor and provides audio-visual alarms, optional data-logging and 4–20 mA relay outputs. Carbon dioxide readings are displayed on a full-colour LCD. Alarm setpoints and calibration functions are configured through the front panel user interface. The monitor is normally located in saturation/dive control to help maintain a comfortable and safe chamber environment.



Divex SDA CO2 analyser

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Analyser type

Fixed (3U rack)


12 to 32 V DC (optional mains to DC power supply)


Full colour LCD

Operating temp

-5°C to +55°C

Storage temp

-10°C to +70°C

Pressure Range

700 to 1300 mbar


0 to 95 %rh at +55°C non-condensing


Monitor - 106 x 129 x 31mm
Sensor and flow panel - 106 x 129 x 194mm


Monitor (DC only) - 595g
Sensor and flow panel - 1393g

IP rating


Sensor Specification

Gas detected

Carbon Dioxide

Mode of operation


Sensor Range

5000 ppm

Basic accuracy

±25ppm CO2 ±1% of reading

Temp coefficient

±2.5ppm CO2 per °C

Response time

T90 in <30 seconds

Warm up time

40 seconds

Recommended flow rate

0.2 to 1 litre per minute

Display units

ppm CO2

Display Resolution

1 ppm CO2


2 x high going (fully adjustable) Visual and audio warnings

IP rating


System approvals

Compliant to Lloyd’s Register, DNV, ABS, NORSOK and IMCA type approvals and design processes


Item Order Code
Divex SDA CO2 Analyser DIVEXCO2




Type Document Download
Datasheet Divex SDA CO2 Analyser

GA-MDS-546 R3