PART THREE - OPERATION
SECTION 4 - ANALYZER CONFIGURATION
Rev. 6-501
Model P53 pH/ORP Analyzer (universal-mount 1/2 DIN)
45
4.4 Configuring Analog
Outputs (1 and 2)
☞
2.
Use
Ø
Ø
key
to select the “SET
°
C OR
°
F” line.
3.
Press
ENTER key
to display a screen like
. Use
Ø
Ø
and
×
×
keys
to view both
choices (
°
C or
°
F). With the desired choice displayed,
press
ENTER key
to enter this selection.
The analyzer provides two isolated analog outputs (1 and
2). During calibration, the analog outputs can be held,
transferred to a preset mA value or remain active. During
normal measurement operation, both analog outputs can be
held at their last measured values:
•
For up to 30 minutes by selecting the “HOLD
OUTPUTS” line in the TEST/MAINT menu and
pressing the
ENTER key
.
•
For an indefinite period by locally or remotely
connecting the TTL input Terminals 9 and 10 on TB1.
•
By an activated TIMER relay for its entered
DURATION and OFF DELAY time periods
(1-999 seconds each)
The output state (HOLD, XFER or ACTIVE) selected during
calibration always takes precedence over an applied TTL
input hold/transfer and/or TIMER relay hold. For more de-
tails on order of precedence for hold functions, refer to
PART TWO, Section 3.6.
From the moment output hold is initiated (during calibration,
from TEST/MAINT menu or by TTL input), the elapsed time
INTERVAL or DURATION countdown for a TIMER relay is
temporarily suspended. Also, any TIMER relay counting
down DURATION time is turned off. When output hold is
released, a TIMER relay resumes its INTERVAL or
DURATION countdown from the suspended time. When a
TIMER relay is counting down DURATION time, both out-
puts are temporarily held until after the preset DURATION
time (and OFF TIME, if used) elapses.
NOTE:
When using the HART communication option, a
digital signal is encoded onto the 4-20 mA analog
Output 1 signal. In a HART SINGLE MODE wiring
configuration, Output 1 remains available for normal
use. However, in a HART MULTI-DROP wiring con-
