Quick Reference for End-Users Lambda Transmitter LT2 ... - lamtec

6 Commissioning / Shutdown6.3 Measurement Start-upWARNING!When installing the probe and during later operation, ensure that the probe does not into contactwith oils, grease or boiler cleaning materials.This applies not just to the cell, but also the connector region!The thread and the clamping ring should be treated with mounting paste type 655 R 1090against seizing.Poisoned or contaminated probes can be identified by an air voltage of -20…-30 mV. In addition,the probe must always be in operation when installed. This avoids the precipitation ofmoisture on the measuring cell, which in certain cases could lead to erroneous measurementsand to the probe's destruction!• Connect the probe but do not install itSwitch to Maintenance either via the display and operating unit in menu "diag” or with themaintenance switch S1Maintenance (orange) LED 1NOTICE!The maintenance switch always has priority.– Maintenance mode active– Normal operation– Maintenance mode off– Maintenance mode on• Switch on voltage• LED 1 shows "Maintenance”• Probe warms up• Cold-start is shownLED 6 "Operation” ONLED 5 "Measurement OFFNOTICE!During cold start the display and operating unit or the monitor output shows/output the cell’sinner resistance R I .The measurement function is operational after 10 minutes.TMeasurement is shownLED 6 "Operation” lights upLED 5 "Measurement " lights upNOTICE!The cold-start delay can be activated from the display and operating unit → "cal” key. Proceedas prompted by the menu, or it can be interrupted by pressing the multifunction key T2 (forlonger than 3 seconds, or if a warning or a fault is still present, for longer than 6 seconds).• Observe the cell’s inner resistance and read the probe voltage alternatively via display andoperating unit (if available) or at the monitor output.34