Emerson Process Management 3081 pH/ORP Section Programming for ORP Measurements, General

MODEL 3081 pH/ORP	SECTION 10.0
	PROGRAMMING FOR ORP MEASUREMENTS

SECTION 10.0

PROGRAMMING FOR ORP MEASUREMENTS

10.1General

10.2Entering and Leaving the Program Menu

10.3Output Ranging

10.4Diagnostic Parameters

10.5Temperature Element

10.6Display Units

10.7Generating a Test Current

10.1 GENERAL

This section describes how to do the following:

1.assign ORP values to the 4 and 20 mA outputs,

2.set the current generated by the transmitter during hold,

3.set the current generated by the transmitter when a fault is detected,

4.change sensor diagnostic limits,

5.change the units of the displayed variables,

6.program a security code,

7.simulate output currents for testing.

Factory default settings are given in Table 10-1. If default settings are acceptable, the transmitter is ready for cal- ibration. See Section 9.0, Calibration of ORP Measurements. There is no way to automatically reset the transmit- ter to factory defaults. Settings must be returned to default values one at a time. Figure 5-5 shows the menu tree.

10.2 ENTERING AND LEAVING THE PROGRAM MENU

Press PROG on the infrared remote controller (IRC) to enter the Program menu. To save new settings, press ENTER . To leave the Program menu without saving new values, press EXIT . Pressing EXIT with a prompt showing returns the display to the first prompt in the sub-menu. Pressing EXIT again returns the transmitter to the process display.

If program settings are protected with a security code, pressing PROG or CAL will cause the Id screen to appear. Key in the security code and press ENTER . The first sub-menu will appear. For more information, see Section 5.7, Security.

A transmitter adjacent to the one being programmed may pick up signals from the IRC. To avoid accidentally changing settings, use a different security code for each nearby transmitter. See Section 5.7, Security, and Section 10.6, Display Units, for details.

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