9-3.20-MD
Gas sampling and gas conditioning technology
11
11
COMMISSIONING
The following points must be taken into consideration on commissioning the
M&C
PMA 05
oxygen
transmitter in conjunction with an oxygen analyser.
Before switching on the device, check the electrical and pneumatic connections.
C A U T I O N !
The sample gas must be dust-free and dry in order to avoid
contamination and the dew point not being reached in the measuring
cell. If required, a reduction in the dew point can be made using a
cooler or drier.
Always install upstream a fine filter with at least 2 µm filtration (e.g.
type FP-2T, Art. No. 01F1200).
A T T E N T I O N !
For correct operation, the PMA 05 oxygen transmitter may be
operated at a constant ambient temperature.
If the transmitter is equipped with heating, the measurement gas should be applied only after
heating of the transmitter. Temperature status contact closed.
12
CALIBRATE
Before performing calibrations, the system and process-specific safety measures must be
observed!
The measurement accuracy depends on the accuracy of the calibration of the transmitter.
The linearity of the measuring ranges enables two-point calibration of the zero point and the
measuring range end value.
The weekly calibration of the transmitter guarantees the required measurement precision. Because
of the direct proportional relationship between oxygen indication and barometric or process
pressure, in the event of major pressure variations, the calibration interval may be shortened
accordingly.
Calibration should be carried out under measurement conditions, i.e. at a constant flow rate, room
temperature and at constant barometric pressure.
A T T E N T I O N !
Avoid vibrations during calibration and during measurement!
