Instruction manual

MODEL XMT-C SECTION 9.0
PROGRAMMING THE TRANSMITTER
46
9.5.3 Procedure: Temperature.
To choose a menu item, move the cursor to the item and press ENTER.
To store a number or setting, press ENTER.
1. Press MENU. The main menu screen appears. Choose Program.
2. Choose Temp.
3. Choose °C/F to change temperature units. Choose Live/Manual to turn
on (Live) or turn off (Manual) automatic temperature compensation.
a. If °C/F is chosen, select °C or °F in the next screen.
b. If Live/Manual is chosen, select Live or Manual in the next screen.
c. If Manual is chosen, enter the temperature in the next screen. The
temperature entered in this step will be used in all subsequent meas-
urements, no matter what the process temperature is.
Calibrate Hold
PPrrooggrraamm
Display
Config Temp?
°
CC//FF
Live/Manual
Outputs
TTeemmpp
Measurement >>
9.5 CHOOSING TEMPERATURE UNITS AND MANUAL OR AUTOMATIC TEMPERATURE
COMPENSATION
9.5.1 Purpose
This section describes how to do the following:
1. Choose temperature display units (°C or °F).
2. Choose automatic or manual temperature compensation.
3. Enter a temperature for manual temperature compensation
9.5.2 Definitions
1. AUTOMATIC TEMPERATURE COMPENSATION. The analyzer uses a temperature-dependent factor to con-
vert raw conductivity to temperature-compensated conductivity. In automatic temperature compensation, the
analyzer measures the temperature and automatically calculates the correct conversion factor unless Slope
(user-entered) or Raw/None was selected. For maximum accuracy, use automatic temperature compensation.
2. MANUAL TEMPERATURE COMPENSATION. In manual temperature compensation, the analyzer converts
raw conductivity to temperature-compensated conductivity using the temperature entered by the user. It does
not use the actual process temperature. Do NOT use manual temperature compensation unless the process
temperature varies no more than about ±2°C or the pH is between 6 and 8. Manual temperature compensa-
tion is useful if the sensor temperature element has failed and a replacement sensor is not available. If man-
ual temperature correction is selected, the display will not show the measured temperature. It will show the
manually entered value.