TESTO 350 User Manual

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5.2.3. Occupying the trigger input
The trigger input can be used as a criterion to either start or stop
(ascending or descending flank) measuring programs.
> Activating the trigger input, with external voltage supply
(5...12 V):
> Activating the trigger input, with supply via instrument voltage
(12 V):
When using the instrument voltage the analyzer can only
be started via the trigger input from the switched off state
when the AC power cord is plugged in.
5.2.4. Connecting system components
5.2.4.1. Connection using contact strip
The control unit can be plugged onto the analyzer box.
1. Place the guide groove in the bottom side of the control unit
over the guide pins of the analyzer box.
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TESTO 350 Specifications

General

Measurement Parameters	O2, CO, NO, NO2, SO2, H2S, CO2, CxHy, H2, Temperature, Draft, Pressure
O2 measurement range	0 to 25 vol. %
CO measurement range	0 to 10, 000 ppm
SO2 measurement range	0 to 5, 000 ppm
Resolution H2	1 ppm
Accuracy O2	±0.2 vol. %
Display	Graphic display
Communication	USB, Bluetooth
Power Supply	Rechargeable battery
Operating Temperature	-5 to 45 °C
Accuracy CO	±5 ppm or ±5% of measured value
Accuracy NO	±5 ppm or ±5% of measured value
Accuracy NO2	±5 ppm or ±5% of measured value
Accuracy SO2	±5 ppm or ±5% of measured value
Accuracy H2S	±5 ppm or ±5% of measured value
Accuracy H2	±5 ppm or ±5% of measured value
Draft measurement range	-99.9 to +99.9 hPa