Bacharach Gas Pup Instructions d'exploitation télécharger pdf (Page 33)

GA-40 T plus OPERATION

ENTER - default setting: Pt 500. The ambient temperature can either be measured with an

internal sensor placed in the probe plug (Pt500), or with an external sensor (Pt500),

connected to the TEMP1 (T3 EXT.) socket.

5.9.2.3.3 External thermocouple- - T1 EXT and T2 EXT

ENTER - Select the desired temperature sensor. The T1 EXT and T2 EXT inputs can be

defined as Ni-CrNi, Pt-RhPt or Fe-CuNi thermocouples

5.9.2.3.4 External resistance thermometer - T3 EXT and T4 EXT

ENTER - Select the desired temperature sensor. The inputs T3 EXT and T4 EXT can be

defined Pt100, Pt500 or KTY-2k thermistors.

5.9.2.3.5 External Voltage/Current inputs - U/I1 EXT and U/I2 EXT

Select the desired signal in the respective line by pressing [ENTER]

ENTER - Select the desired input signal . On both of the sockets U/I1 and U/I2 either current

(0-10 mA) or voltage (-10V - +10V) can be measured.

5.9.2.4 Sensor calibration

Besides O

every electrochemical sensor needs to be calibrated with calibration gas. To calibrate the sensors

they are fed one by one with calibration gas of a known concentration. After a few minutes the sensor

supplies a stabilised signal which can be stored as calibration value. The order of calibration does not effect

the calibration.

{{ Any calibration screen value change is followed by loss of the original

calibration settings. Thus CALIBRATION option should be selected only when

it is to be carried out.

The standard gas concentration should be similar to that usually met during measurement and it should not be

less than 10% of the required measuring range of a given sensor

The time the sensor is fed with standard gas should not be less than 4 min. After each calibration the sensors

should be flooded with ambient air for at least 15 minutes.

Calibration procedure

Â and Ã - move the cursor to CALIBRATION W. GAS

Á - select the option

ATTENTION

CALIBRATION!

ARE YOU

SURE

ENTER - CONTINUE

ENTER - carry on with the calibration

À - abort the calibration, move back to SENSORS

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Bacharach Gas Pup Instructions d'exploitation Page 33