Emerson Process Management 3081 pH/ORP Off-line and On-line Operation, Menu Tree

MODEL 3081 pH/ORP	SECTION 6.0
	OPERATION WITH MODEL 275

6.3Operation

6.3.1Off-line and On-line Operation

The Model 275 Communicator features off-line and on-line communications. On-line means the communicator is connected to the transmitter in the usual fashion. While the communicator is on line, the operator can view meas- urement data, change program settings, and read diagnostic messages. Off-line means the communicator is not connected to the transmitter. When the communicator is off line, the operator can still program settings into the communicator. Later, after the communicator has been connected to a transmitter, the operator can transfer the programmed settings to the transmitter. Off-line operation permits settings common to several transmitters to be easily stored in all of them.

6.3.2Menu Tree

Figure 6-2 shows the menu tree for the Model 3081 pH transmitter. Figure 6-3 shows the menu tree for the Model 3081 ORP transmitter.

6.3.3Fast Key Sequences.

Fast key sequences are a series of key presses that begin at the on-line menu and lead directly to a given oper- ation (for example, standardize). Some useful sequences are the following:

1.Calibrate with buffers

2.Standardize

3.Adjust current output to match displayed value

4.Place transmitter in hold

5.Assign pH or ORP value to 20 mA output

6.Assign pH or ORP value to 4 mA output

7.View pH value

8.View analog output

9.View transmitter status

Key Presses

2	3	1	1
2	3	2	1

24

25

3	2	2
3	2	1

1 1 1

12

13

43