Emerson Process Management 3081 pH/ORP instruction manual Display Units

MODEL 3081 pH/ORP	SECTION 10.0
	PROGRAMMING FOR ORP MEASUREMENTS

10.6 DISPLAY UNITS

10.6.1 Purpose

This section describes how to do the following:

1.switch the process display units between pH and ORP (millivolts),

2.select °C or °F for the temperature display,

3.select percent of full scale or milliamps for the output display,

4.program a security code.

10.6.2 Definitions

1.DISPLAY UNITS. Select pH if the transmitter is being used to measure pH. Select ORP if the transmitter is being used to measure ORP. The units selected are shown in the main display next to the measured value.

2.OUTPUT CURRENT DISPLAY. The transmitter generates a 4 to 20 mA output signal directly proportional to the ORP of the sample. The output signal also appears on the temperature-output display line. The output signal can be displayed as current (in mA) or as percent of full scale.

3.SECURITY CODE. The security code unlocks the transmitter and allows complete access to all menus. The transmitter is shipped with security code disabled.

PROGRAM

dISPLAY

EXIT NEXT ENTER

PROGRAM

tYPE	PH
EXIT		ENTER
PROGRAM
tEMP
	C
EXIT		ENTER
PROGRAM
OUtPUt
	CUR
EXIT			ENTER

10.6.3 Procedure

1. Press PROG on the infrared remote controller (IRC).

2. Press NEXT until the dISPLAY sub-menu appears. Press ENTER .

3. The screen displays the tYPE prompt. Press Ï or Ð to toggle between pH and OrP. Press ENTER to save.

4. The screen displays the tEMP prompt.Press Ï or Ð to toggle between C and F. Press ENTER to save.

5. The screen displays the OUtPUt prompt. Press Ï or Ð to toggle between % and CUr. Press ENTER to save.

PROGRAM

CODE

EXIT

000

ENTER

6. The screen displays the COdE prompt. Use the editing keys to enter a security code between 001 and 999. Entering 000 disables the security feature. Press ENTER to save.

7. Press EXIT to return to the process display.

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