Total pressure gauge and controller TPG 300 - Fergutec.com
Total pressure gauge and controller TPG 300 - Fergutec.com
Total pressure gauge and controller TPG 300 - Fergutec.com
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
6.2.2 Operating <strong>and</strong> calibration problems<br />
Problem Possible cause Correction<br />
No display appears when the unit is<br />
switched on<br />
Unit switched off for too short a period<br />
of time<br />
After switching the unit off, wait approx. 10 seconds<br />
before restarting<br />
Pressure display unstable Filter time constant too low Increase the filtering (→ section 4.7.7)<br />
Switching functions (relays) flutter Hysteresis too small Modify the threshold values (→ section 4.7.4)<br />
Increase the filtering (→ section 4.7.7)<br />
Pirani <strong>pressure</strong> display too high Pirani <strong>gauge</strong> contaminated Calibrate the measuring circuit<br />
Pirani measurement circuit cannot be calibrated<br />
Combination measurement plug-in<br />
board / <strong>gauge</strong> cable / <strong>gauge</strong> is not<br />
<strong>com</strong>patible<br />
Cold cathode <strong>pressure</strong> display too high Contaminated or moist connector insulation<br />
Clean the <strong>gauge</strong> (→ [4] ... [6])<br />
Replace the <strong>gauge</strong><br />
Select correct <strong>com</strong>bination (→ [3])<br />
Pirani <strong>gauge</strong> severely contaminated Clean the <strong>gauge</strong> (→ [4] ... [6])<br />
Replace the <strong>gauge</strong><br />
Clean or replace connector<br />
Humidity ( leak current) Keep humidity low, keep the unit switched on<br />
Cold cathode <strong>pressure</strong> display too low Cold cathode <strong>gauge</strong> contaminated Clean the <strong>gauge</strong> (→ [7] ... [10])<br />
«no P» is displayed No plug-in board has been installed Install the appropriate plug-in board 2)<br />
In<strong>com</strong>prehensible display Plug-in board not screwed down Tighten the screws<br />
Contacts contaminated / bent Clean / carefully straighten contacts 2)<br />
BG 800 <strong>300</strong> BE / A (0105) <strong>TPG</strong> <strong>300</strong> 39
Change language