7-4
EN
SPAN PASS
The span value, set with the local span adjustment button, has been accepted by the
transmitter, and the output should change to 20 mA.
SPAN FAIL
The span value, set with the local span adjustment button, exceeds the maximum
rangedown allowed for a particular range, or the pressure sensed by the transmitter
exceeds the sensor limits.
LOCAL DSBLD
This message appears during reranging with the integral zero and span buttons and
indicates that the transmitter local zero and span adjustments have been disabled.
The adjustments may have been disabled by the transmitter security jumper on the
transmitter circuit board or through software commands from the Model HC275 refer
to “Failure Mode and Security Jumpers” on Page 4-11 for information on the position
of the security jumper, and for information on the software lockout.
WRITE PROTCT
The write protect (SECURITY) jumper is set to disable changes to the transmitter
configuration data. Refer to “Failure Mode and Security Jumpers” on page 4-11 for
more information on the security jumper.
LCD METER FOR ANALOG TRANSMITTERS
The LCD meter displays a digital value that is proportional to the pressure
measured by the transmitter. The zero point of the indicator may be set to any value
between –999 and 1000. The full scale point may be set to any value between 1.000
and 9999. In addition, adhesive labels are provided with the LCD meter option so
that you can scale the indication to display in engineering units of pressure or level
(see Figure 7-2).
Note the following LCD temperature limits:
Operating
: –4 to 175
°
F (–20 to 80
°
C).
Storage
: –40 to 185
°
F (–40 to 85
°
C).
FIGURE 7-2. LCD Meter
on a Model PX2088 Analog.
Meter Selector
Switch
Transmitter Selector
Switch
Engineering Units
Potentiometer Adjustment
LCD
2
0
8
8
-2
08
8C07
E
4690.bk : 4690.s7 Page 4 Tuesday, May 26, 1998 5:28 PM
