Programming the Transmitter
Instruction Manual
February 2014
LIQ_MAN_6081-P
24
Programming the Transmitter
To store a number or setting, press
ENTER.
1. Press MENU. The main menu screen appears. Choose
Program.
2. Choose
Measurement.
3. Choose
pH, Redox
, or
ORP.
If you chose
pH,
do steps 5 through 9.
If you chose
ORP
or
Redox,
do step 10.
4. Enter the correct preamplifier location. The default setting is within the transmitter.
5. For measure sampling rate, select 1 second to 10 minutes by scrolling through choices. Press
ENTER.
6. Choose
Soln Temp Corr
or
Sensor Isoptntl.
7. For
Soln Temp Corr
, choose
Off, UltraPure, HighpH,
or
Custom
. For
Custom
, enter the
desired temperature coefficient.
8. For
Sensor Isoptntl,
enter the desired sensor isopotential pH. Do not change the sensor
isopotential pH unless the sensor is known to have an isopotential pH different from 7.00.
9. Choose Low or High Reference Impedance to match the installed sensor’s reference impedance
signal. The default setting is Low Impedance to match standard pH sensors. Press EXIT twice to
return to the Program menu.
10. If Redox or
ORP
was selected, there are no further settings to make. Press EXIT to return to the
Program menu.
11. To return to the main display, press MENU followed by EXIT.
8.4
Choosing Temperature Units and Manual or
Automatic Temperature Compensation
8.4.1
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
8.4.2
Definitions
1.
Automatic Temperature Compensation
. The analyzer uses a temperature-dependent factor
to convert measured cell voltage to pH. In automatic temperature compensation, the analyzer
measures the temperature and automatically calculates the correct conversion factor. For
maximum accuracy, use automatic temperature compensation.
2.
Manual Temperature Compensation
. In manual temperature compensation, the analyzer
converts measured voltage to pH 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 compensation is useful if the sensor temperature element has failed and a
replacement sensor is not available. If manual temperature correction is selected, the display
will not show the measured temperature. It will show the manually entered value.
8.4.3
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 measurements, no matter what the process temperature is.
