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MODEL 54e pH/ORP APPENDIX A
ORP CONFIGURATION
APPENDIX A
ORP CONFIGURATION
QUICK STARTUP (ORP)
The Model 54e pH/ORP controller comes pre-pro-
grammed by the factory as a pH controller. In order
to perform a quick startup as an ORP controller, the
controller must first be switched to the pre-configured
ORP program. Most ORP sensors will look and con-
nect very much like pH sensors, but will have a metal
ring electrode over a glass shaft with a thick end
instead of a thin pH glass membrane.
To switch to an ORP controller and perform a quick
startup:
1. Connect the ORP sensor to the controller. Wire
to controller per Figure 2-5 or 2-6.
2. Apply primary power (Figure 2-4) to the con-
troller.
3. Change the controller to ORP operation. Refer to
Section 5.3, or:
A. Press any key to display the main menu.
B. Move cursor until Program is highlighted.
C. Press Enter (F4).
D. Highlight "Configure" and press Enter (F4).
E. Highlight "Display" and press Edit (F4).
F. Use the arrow key to change "Measure" from
pH to ORP and press Save (F4). Warning
screen appears - press Cont (F3).
4. Complete the ORP standardize instructions).
5. Preset alarm and output settings are listed
below: If these values are unacceptable, refer to
Section A.1 for a detailed configuration proce-
dure. For a summary of the complete factory set-
tings see Table A-1.
Alarm 1 (low alarm): -1400mV
Alarm 2 (high alarm): +1400mV
Alarm 3 (high alarm): +1400mV
Output 1 (4mA setpoint): -1400mV
Output 1 (20mA setpoint): +1400mV
CONFIGURING THE CONTROLLER
Configuration of the ORP settings can be done at any
time after the controller has been set to ORP mode
(step 3 in Quick Startup on the left). Procedures for
these operations follow the ORP Standardization
instructions in this appendix.
Before attempting any changes refer to the configu-
ration setup list shown in Table A-1. This table pres-
ents a brief description and the configurable items.
The factory setting is also given with a space for the
user setting. It is recommended that the list be care-
fully reviewed before any changes are made.
On initial configuration, it is recommended that the
settings be entered in the order shown on the work-
sheet. This will reduce the chance of accidentally
omitting a needed setting.
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