Accumet AP75 Operating Instructions Manual

Contents

Accumet AP75 Operating Instructions Manual Manual pdf 17 page image

16Temperature calibration1. Make sure the cell is attached to the 6-pinconnector. The ATC annunciator willappear at the right-hand side of the LCD*.2. Switch the meter on. Press the MODEkey to select conductivity mode.3. Press the CAL/MEAS key to enter con-ductivity or TDS calibration mode. TheCAL indicator appears above the primarydisplay.See figure4. While in conductivity or TDS calibrationmode, press the MODE key to enter tem-perature calibration mode. The primarydisplay shows the current temperaturereading and the secondary display showsthe factory default temperature value.See figure5. Dip the cell into a solution of knowntemperature (i.e. a temperature bath).Allow time for the built-in temperaturesensor to stabilize.6. Scroll with the t and s keys to setthe correct temperature value (i.e. thetemperature of the temperature bath).You can adjust the reading in incrementsof 0.1°C.See figure7. Once you have selected the correcttemperature, press the ENTER key.8. Press the CAL/MEAS key to return toconductivity or TDS measurement mode.Temperature CalibrationYour probe features a built-in temperature sensor. The temperature sensor is factorycalibrated. Calibrate your sensor only if you suspect temperature errors that mayhave occurred over a long period of time or if you have a replacement probe.4.5BBAANotes• You can offset the temperature reading up to ±5°C from the original reading.• To exit this program without confirming the temperature calibration value, DO NOTpress ENTER in step 7. Press CAL/MEAS instead.*If the ATC indicator does not light, see Program P4.3, on page 33 to switch it on.CC