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5.8 SECURITY
5.8.1 General. Use the programmable security code to protect program and calibration
settings from accidentally being changed. The transmitter is shipped with the security fea-
ture disabled.
5.8.2 Entering the Security Code.
1. If calibration and program settings are protected with a security code, pressing PROG
or CAL on the infrared remote controller causes the Id screen to appear.
2. Use the editing keys to enter the security code. Press ENTER .
3. If the security code is correct, the first sub-menu appears. If the security code is incor-
rect, the process display reappears.
5.8.3 Retrieving a Lost Security Code.
1. If the security code has been forgotten, enter 555 at the Id prompt and press ENTER .
The transmitter will display the present code.
2. Press EXIT to return to the process display.
3. Press PROG or CAL . The Id screen appears.
4. Use the editing keys to enter the security code just shown; then press ENTER .
5. The first sub-menu under the selected menu will appear.
MODEL 5081-T SECTION 5.0
DISPLAY AND OPERATION
PROGRAM
5G
EXIT ENTER
"""
5.9 USING HOLD
During calibration, the sensor may be exposed to solutions having concentration outside the normal range of the process.
To prevent false alarms and undesired operation of chemical dosing pumps, place the transmitter in hold during calibra-
tion. Activating hold keeps the transmitter output at the last value or sends the output to a previously determined value.
See Section 7.2, Output Ranging, for details.
After calibration, reinstall the sensor in the process stream. Wait until readings have stabilized before deactivating Hold.
To activate or deactivate Hold:
1. Press HOLD on the remote controller.
2. The HoLd prompt appears in the display. Press or
to toggle Hold between On and OFF.
3. Press ENTER to save.