Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 55)

IM 12D06A03-01E
Parameter setting 5-13
5-3. Service Codes
Don't set or input service code numbers other than the code numbers defined in this manual. Setting an
undefined service code may make the transmitter malfunction.
When an undefined service code is input by some accident, push the MODE key and escape from the
service level.
5-3-1. Parameter specific functions
Code 03 *C.C. Enter the factory calibrated cellconstant mentioned on the textplate or on the
fixed cable. This avoids the need for calibration. Any value between 0.2 and
19.99/cm may be entered.
Code 04 *AIR To avoid cable influences on the measurement, a ‘zero’ calibration with a
dry sensor may be done. If a connection box (BA10) and extension cable
(WF10) are be used, ‘zero’ calibration should be done including this connection
equipment.
5-3-2. Temperature measuring functions
Code 10 *T.SENS Selection of the temperature compensation sensor. The default selection is the
30k NTC sensor, which gives excellent precision with the two wire connections
used. The other option gives the flexibility to use a very wide range of other
conductivity/inductive sensors.
Code 11 *T.UNIT Celsius or Fahrenheit temperature scales can be selected to suit user
preference.
Code 12 *T.ADJ With the process temperature sensor at a stable known temperature, the
temperature reading is adjusted in the main display to correspond. The
calibration is a zero adjustment to allow for the cable resistance, which will
obviously vary with length.The normal method is to immerse the sensor in a
vessel with water in it, measure the temperature with an accurate thermometer,
and adjust the reading for agreement.
Code Display Function Function detail X Y Z Default values
Parameter specific functions
03
*C.C. Set cell constant Use keys to set value 1.88 /cm
04 *AIR Zero calibration Zero calibration with dry cell connected
*START Press YES to confirm selection
*‘WAIT’ Press YES to start, after briefly displaying
*END ‘WAIT’, *END will be displayed
Press YES to return to commissioning mode
Code Display Function Function detail X Y Z Default values
Temperature measuring functions
10
*T.SENS Temperature sensor 30k NTC 0 0 30k NTC
Pt1000 1
11 *T.UNIT Display in °C or °F °C 0 0 °C
°F 1
12 *T.ADJ Calibrate temperature Adjust reading to allow for cable resistance. 0.0 ºC
Set value relative to current temperature
Use keys to adjust value