REV 0, June 2005Page 174
Operation Manual SUPREMA
6. Startup
Furthermore the required zero and span gases as well as test adapter and tube connections
for gas application (see respective sensor operation and maintenance manual) are conditions
for the successful performance of the gas technical presetting.
Flow and duration of span gas application can be seen from the sensor operation and
maintenance manual.
For the presetting the following steps must be carried out of person 1 (at the SUPREMA) and
person 2 (at the respective sensor):
Person 1:
• Connect digital multimeter to the test jacks of the MAI module (red/black), and select
the 3 V DC measuring range.
• Ua is shown in mV when selecting SEL and SPAN functions.
• Activate the operation keys (UP, DOWN, MS) by pressing the SEL key
Select measuring point by pressing the MS key; per keystroke a measuring point
further is switched, the selected measuring point is shown by the front LED row (topmost
LED = measuring point 1, undermost LED = measuring point 8); the LED of the selected
measuring point is shining green.
Person 2:
• Application of zero gas at the sensor assigned to the measuring point selected
(approx. 5 min. resp. accoridng to sensor operation and maintenance manual at least
until person 2 has finished the zero presetting.
Person 1:
• First select SPAN by pressing SEL key. (LED SPAN is shining green)
• Set SPAN to Maximum . (Press UP key approx. 10 sec)
• Select Zero by pressing the SEL key (LED ZERO is shining/orange)
• Adjust the default value (rough pre-adjustment of the zero) provided for the sensor by
pressing the button UP or DOWN.
Default values for all passive sensors:
MPI WT10, MPI WT100, MPI HL8113 and MPI HL8101:
Zero Ua = 350 ... 450 mV
Person 2:
• Finish zero gas application when person 1 reports the successful presetting of the
zero. Then apply span gas (concentration normally 50% of measuring range, in no case
this concentration should be smaller than 20% of the measurement range final value
(see respective sensor operation and maintenance manual).
Person 1:
• Select SPAN function by pressing the SEL button, wait until warm-up time is finished
(voltage signal does not change any more, or only slightly)
• Adjust the value correponding to the span gas concentration by pressing the buttons
UP or DOWN. (see data sheet of measuring head resp. operation manual sensor). The
voltage value is calculated according to the formula:
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