Specifications

3. Operation MI 611-211 – October 2005
29
Hold
(Refer to “Structure Diagram 7” on page 44.)
The Hold mode enables you to hold the output at a determined value, thus allowing you to
configure or calibrate the transmitter or perform sensor maintenance without disturbing the
control loop. If you do not put the transmitter in Hold mode before configuring or calibrating,
the output will go to 4 mA if you have configured the output as
ANALOG or it will be held at the
present value if you have configured the output as
DIGITAL.
While you are in the Hold mode, the bar graph will flash on and off. To enter the Hold mode,
press the
HOLD key. You will be prompted to enter the Minor Passcode. If you enter the incorrect
passcode, the transmitter will revert to the Measurement (normal) mode. If you enter the correct
passcode, the display will read HOLD OFF or HOLD ON. If it reads HOLD OFF, use the Down
arrow key to change it to
HOLD ON. Then specify whether you want to hold the output at the
PRESENT value or at another value that you will MANUALly set.
If you selected
MANUAL and your transmitter was specified with analog communications
(870ITPH-A), your display will read MANUAL ANALOG. Specify the value between 4.00 and
20.00 mA at which you want to hold the output while in the Hold mode. The default value is
4.00.
Table 11. Sensor Diagnostics
Sensor
Diagnostic
(a)
Glass Leakage Lowslope Preamp Coat Aging ATC
PH10 X X X X
(b)
XX X
ORP10 X X X X
(b)
XX X
871PH-1
871PH-2
XXX
871PH-3
871PH-4
XX X X XXX
871PH-5
871PH-6
XX X XXX
871A-1 X X X X X X
871A-2 X X X
871A-3 X X X X X X
871A-4 X X X X X X X
EP460-.N X X X X X X
EP460-.P X X X
EP462XX X XXX
EP466XX X XXX
(a)X = applicable; blank = not applicable
(b)For PH10-.P or ORP10-.P.