Instruction manual

MODEL 5081-C SECTION 5.0

DISPLAy AND OPERATION

5.8 SECURITy

5.8.1 General. u se the programmable security code to protect program and calibration

settings from accidentally being changed. The transmitter is shipped with the security fea-

ture disabled. To program a security code, refer to Section 8.6, d isplay u nits.

5.8.2 Entering the Security Code.

1. if calibration and program settings are protected with a security code, pressing PRo G

or CAL on the infrared remote controller causes the Id screen to appear.

2. u se 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 PRo G or CAL . The Id screen appears.

4. u se the editing keys to enter the security code just shown; then press ENTER .

5. The first sub-menu under the selected menu will appear.

PRo GRAM

EXiT ENTER

000

5.9 USING HOLD

d uring 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 7.3, o utput 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 Ho Ld 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.