1. a1-cbiss
RGS8000
Datasheet
· Fast response time
· Rugged stainless steel body
· Dual wavelength infrared technology
· Thermal drift compensated
The RGS8000-CO2 uses advanced, miniaturised NDIR technology
combined with surface-mount microprocessor and firmware technology.
A pulsed infrared source emits a broad spectrum infrared beam within an
optical cavity.
The system measures the absorption of infrared energy as it passes
through a gas sample. Different gases have clearly defined absorption
characteristics, their concentration can be determined by their absorption
of infrared radiation at the wavelength determined by filter lambda 1.
To compensate for interfering factors filter lambda 2 isolates another
wavelength which is used to measure the total transmission through the
optical cavity and is not affected by the gas being monitored. By comparing
the infrared energy reaching each of the two detectors, the concentration
of the gas sample can be determined. The signal processor compares and
linearises these two signals. A thermistor monitors the sensor temperature
and the signal, processor compensates for drift caused by temperature
changes.
Specification
Operating voltage and current
3.8Vdc @ 100mA (Min. operating voltage 3.0Vdc - max. 5.0Vdc)
Detection range
0-5% carbon monoxide
T90 response time
<45 seconds
Stabilisation time
1 minute (preconditioning time, 1 hour)
Operating temperature range
-30°C to +55°C
Repeatability
±0.1% CO2 at 20°C
Linearity
±0.25% of full scale
Humidity range
5% to 95% RH non-condensing
Sensor bridge output
60mV at 5% CO2
Threads
Mounting thread: M25 X 1.5mm Accessory thread M42 x 1.5mm
Weight 750g
Electromagnetic Conformance (EMC)
Complies with EN50081 and EN50082
026
Certificate Number 996QM8001
t: +44(0)151 666 8300 f: +44(0)151 666 8329 e: sales@a1-cbiss.com www.a1-cbiss.com
2. a1-cbiss
RGS8000
Specifications
The a1-cbiss RGS8000-826 is a metal oxide semiconductor sensor optimised for the detection of ammonia in
refrigeration applications. The sensor has low conductivity in clean air. In the presence of amine compounds the sensor’s
conductivity increases depending on the gas concentration. An electronic circuit and associated firmware on the controller
converts the change in conductivity to a signal which corresponds to the gas concentration. The sensor element is heated to
reduce the unwanted effects of humidity and temperature on the sensor resistance.
Gas Ammonia
Range 200ppm
Power consumption
850mW
Sensing element
SnO2
Sensor base
Alumina ceramic
Operating temperature
-30ºC to +40ºC
The a1-cbiss RGS8000-832 is a metal oxide semiconductor sensor optimised for the detection of chlorofluorocarbons such
as R134a in refrigeration applications. The sensor has low conductivity in clean air. In the presence of chlorofluorocarbon
compounds the sensor’s conductivity increases depending on the gas concentration. An electronic circuit and associated
firmware on the controller converts the change in conductivity to a signal which corresponds to the gas concentration. The
sensor element is heated to reduce the unwanted effects of humidity and temperature on the sensor resistance.
Gas
Chloroflurocarbons (e.g. R134a, R22, etc)
Range 2,000ppm
Power consumption
900mW
Sensing element
SnO2
Sensor base
Alumina ceramic
Operating temperature
-10ºC to +50ºC
The a1-cbiss RGS8000-813 is a metal oxide semiconductor sensor optimised for the detection of general hydrocarbon
compounds such as methane or propane in refrigeration applications. The sensor has low conductivity in clean air. In the
presence of hydrocarbon compounds the sensor’s conductivity increases depending on the gas concentration. An electronic
circuit and associated firmware on the controller converts the change in conductivity to a signal which corresponds to the
gas concentration. The sensor element is heated to reduce the unwanted effects of humidity and temperature on the sensor
resistance.
Gas General
hydrocarbons (e.g. methane or propane)
Range 10,000ppm (1%)
Power consumption
900mW
Sensing element
SnO2
Sensor base
Alumina ceramic
Operating temperature
-10ºC to +50ºC
026
Certificate Number 996QM8001
t: +44(0)151 666 8300 f: +44(0)151 666 8329 e: sales@a1-cbiss.com www.a1-cbiss.com
