Commissioning Hardware PolyGard
®
DGC- 05
Page 21
PolyGard
is
a
registered
trademark
of
MSR
GAINBDGC05_E_1206
Phone.:
0049(0)8531/9004-0
Fax:
0049(0)8531/9004-54
Specification subject to change without notice.
MSR-Electronic GmbH, Würdinger Str. 27, D 94060 Pocking
www.msr-electronic.de
Made in Germany
6 Calibration
New transmitters are always delivered factory-calibrated by MSR-E. This is stated by the calibration label
indicating date and calibration gas. In this case calibration is not necessary during commissioning.
For the calibration of the DT- 05 (MP X.1) an automatic routine is deposited in the menu “Calibration” of the
service tool DGC-05-STL. The measured value of the analog transmitter (MP X.2) is displayed in the same menu
for the calibration with the zero- and gain- potentiometer.
While the calibration menu is open, the MP doesn’t transmit any measured values to the GC- 05 controller.
Therefore applying the calibration gas to the sensor DT- 05 or AT- XX doesn’t release an alarm.
As facilities you only need a zero gas and a calibration gas, the calibration adapter and an extraction set.
Prior to calibration the sensor must be connected continuously to the power supply for a running-in period.
The running-in period of the different sensors can be taken from the following table:
Sensor/Gas
type
t
in
01 CO
1
h
02 Ex
1
h
03 NO
2
h
04 NO
2
6
h
05 NH
3
18
h
06 O
2
1
h
Required instruments to calibrate the transmitter:
•
Test gas bottle with synthetic air.
•
Test gas bottle with range 150 – 270 ppm CO.
•
Gas pressure regulator with flow meter to control the gas flow to 150 ml/min.
•
Sensor head calibration adapter with tubing. Type: Calibr-set-AT 1110S01
Note:
Please observe proper handling procedures for test gas bottles!
6.1
Zero Point Calibration
(After sensor warm-up)
•
Connect STL to the Service Tool Connector and open the window “Zero calibr. MP X.1”.
•
Connect the calibration adapter to sensor element.
•
Apply sensor element zero calibration gas, 150 ml/min; 1 Bar (14.5 psi ) ± 10%, or other clean air source.
•
Wait two minutes until the signal is stable and press “Enter”.
•
Remove calibration adapter.
6.2
Calibration Span
Notes:
CO calibration gas is toxic, never inhale the gas! Symptoms: Dizziness, headache and nausea.
Procedure if exposed: Bring into fresh air at once, consult doctor.
•
Connect STL to the Service Tool Connector and open the window “Gain calibr. MP X.1”.
•
Connect calibration adapter to sensor element.
•
Apply sensor element span calibration gas (150 - 270 ppm CO), 150 ml/min; 1 Bar (14.5 psi) ± 10%.
•
Wait two minutes until the measuring value is stable and press “Enter”.
•
Remove calibration adapter.
