Filter
Top Products
43
MODEL 3081 pH/ORP SECTION 6.0
OPERATION WITH MODEL 275
6.3 Operation
6.3.1 Off-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.
6.3.2 Menu 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.
6.3.3 Fast 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:
Key Presses
1. Calibrate with buffers 2311
2. Standardize 2321
3. Adjust current output to 2 4
match displayed value
4. Place transmitter in hold 2 5
5. Assign pH or ORP value 3 2 2
to 20 mA output
6. Assign pH or ORP value 3 2 1
to 4 mA output
7. View pH value 1 1 1
8. View analog output 1 2
9. View transmitter status 1 3