INFRA.sens AK250 TBH N2O CH4 CO2 • Wi.Tec-Sensorik

Gases:

Table of Contents

1 Applications
2 Options
3 Features & Benefits
4 Sensor Configurations
5 List of measurement ranges
6 Technical Drawing (Dimensions)
7 Technical Data
8 Service & Support
9 Associated Downloads

Applications

Options

Features & Benefits

Low detection limit N₂O without CO₂ interference
Temperature controlled at 50°C
Low drift
Internal pressure compensated
Different interfaces (RS232, CANbus,Analog
MARS-Tool (Datalogger and Controlsoftware)

Sensor Configurations

^(*) If several gases are displayed in one column, only one gas can be selected per column
^(**) O₂ = Oxygen, P = Pressure, H = Humidity
		Gas Channel 1 ^(*)	Gas Channel 2 ^(*)	Gas Channel 3 ^(*)	Gas Channel 4 ^(*)	Options ^(**)
Triple Gas Module	3.1	CH₄	N₂O	CO₂		O₂	P	H

List of measurement ranges

^(*) Full scale value (F.S.)
For other measuring ranges please refer to our further datasheets
	Measuring range ^(*)
	100 Vol.%	50 Vol.%	30 Vol.%	20 Vol.%	10 Vol.%	5 Vol.%	1 Vol.%	5,000 ppm	2,000 ppm	1,000 ppm	500 ppm	300 ppm	100 ppm	50 ppm	10 ppm	1 ppm
CH₄
N₂O
CO₂

Technical Drawing (Dimensions)

Technical Data

General features^*
Measurement principle	Non-dispersive infrared (NDIR); dual beam; 3 wavelenghts including reference path
Measurement range	Channel 1 – CH₄ @ 1.000 ppm Channel 2 – N₂O @ 2.000 ppm Channel 3 – CO₂ @ 5 Vol.%
Gas flow	0.1 – 1.5 l /min
Dimensions	345 mm x 153 mm x 103 mm
Weight	approx. 1510 g
Tube connector	4/6 mm tube
Lifetime of IR radiation source	> 40 000 h

F.S. full scale ¹ related to Pa = 1020 hPa ; Ta = 25 °C ; flow = 1l /min

Measuring response^*
Warm-up time	< 45 min ³
Response time (t₉₀)	< 5 s
Detection limit (3·σ)	CH₄ : 2.5 ppm N₂O : 0.5 ppm CO₂ : 5 ppm
Linearity error	CH₄ : < 5 ppm N₂O : < 5 ppm CO₂ : < 50 ppm
Repeatibility	CH₄ : < 5 ppm N₂O : < 5 ppm CO₂ : < 50 ppm
Long term stability (zero)	CH₄ : < ± 10 ppm /month N₂O : < ± 20 ppm /month CO₂ : < ± 100 ppm /month
Long term stability (span)	CH₄ : < ± 5 ppm /month N₂O : < ± 5 ppm /month CO₂ : < ± 50 ppm /month
Temp. Influence zero	< 0.2 %F.S. /10K
Temp. Influence span	< 0.4 %F.S. /10K
Cross sensitivity	CH₄ @ 1.000 ppm ⇒ N₂O : - 5 ppm // ⇒ CO₂ : 10 ppm N₂O @ 2.000 ppm ⇒ CH₄ : < 5 ppm // ⇒ CO₂ : 10 ppm CO₂ @ 5 Vol.% ⇒ CH₄ : - 2 ppm // ⇒ N₂O : - 2 ppm
Pressure influence	< 0.01 % /10 hPa of reading

² full specification, demands to environmental conditions // ³ depends on digital filter settings // ⁴ at zero point with N₂ // ⁵ to each calibrated gas channel, other gases on request // ⁶ with pressure compensation

Electrical inputs and outputs
Supply voltage	24 (15 – 30) VDC
Supply current (peak)	< 1.2 A
Power consumption (average)	< 10 W
Digital output signal	RS 232 (ASCII) or CANbus

Climatic conditions
Operating temperature^*	5 – 45 °C ⁷
Storage temperature	- 20 – 60 °C
Air pressure	300 – 1200 hPa (mbar)
Ambient humidity	0 – 95 % rel. humidity (not condensing)