DALEMANS octoPRO, Руководство по калибровке

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2.2. Flammable gases detector (DEX CAN transmitter)
To perform a correct calibration of a flammable gases detector you need :
1. A calibration gas cylinder (concentration between 1/3 and 2/3 of measuring range);
2. A pressure reducer with flowmeter;
3. An injection nozzle;
4. A Teflon or polyurethane flexible hose (Ø 7mm);
5. A voltmeter;
6. A measurement plug (pitch = 2.54mm);
7. An insulated flat screwdriver (width 3.5mm).
To get the injection nozzle or the measurement plug please contact Dalemans.
For applying gas to the detector, the flexible hose has to be plugged at one end to the cylinder flowmeter, and at
the other end to the injection nozzle. The injection nozzle must be fitted in the detection head opening (
). Figure 8
Figure 8 : Applying gas to the detector
Man-CanDetectors-Cal-En-V10.doc
Can Bus Gas Detectors -
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Figure 6 : Calibration gas Figure 7 : Measurement plug
Cylinder
Flowmeter
Hose
Hose
Injection
nozzle
Detection
head
Pitch 2.54mm
e
Depending on the type of installation, the DEX CAN transmitter is located in the detector junction box (Figure
9) or inside the OctoBUS 64 central unit (Figure 10).
Figure 9 : DEX CAN detector Figure 10 : DEX CAN transmitter with remote detector
OctoBUS 64 central unit
Remote detector
DEX CAN Transmitter
Detection head
DEX CAN
Transmitter
To perform calibration always proceed in the following order :
1. Set the operating voltage of the cell;
2. Set the zero of DEX CAN (Zeroing);
3. Adjust sensibility of DEX CAN (Gain).