Setra System Model LD330 - Manual (Page 2)

2
3.0 PANEL-MOUNT
CONFIGURATION
If the panel-mount configuration is
supplied, see Figure 1 for cut-out
dimensions. Insert the panel-mount
display through the front and secure
to the panel with four mounting
screws (not supplied).
Figure 1
1.55
39.37
1.73
43.18
1.88
47.8
Cut Out
Dimensions
ø0.15
3.81
1.65
41.9
2.25
57.2
1.00
25.4
4.0 CALIBRATION
The LD330 is factory calibrated to display engineering units. The multi-turn pots on the front
face are for zero and span display adjustment. Setra recommends that the zero adjustments
be done using the transducer zero potentiometer whenever possible. The display zero
potentiometer should only be used for minor adjustments. Never adjust the span potenti-
ometer unless proper calibration equipment is used and proper calibration procedures are
followed.
4.1 Zero & Sensitivity Adjustment
The zero and sensitivity (span) potentiometer are located on the front of the unit just
under the digital display. Remove the protective plugs to access the potentiometers.
1. Apply zero pressure to the transducer and adjust the LD330's zero potentiometer if
the LD330 does not display "0".
Note: For a compound range (eg -14.7 to 100 psig unit) apply "0" psig pressure to
the transducer and adjust the LD330 zero potentiometer until the display is "0". Do
not apply -14.7 psig and attempt to adjust the display to "-14.7".
2. Apply full scale output to the transducer/transmitter and adjust the span potentio-
meter on the LD330 if the LD330 does not display the correct value. If the adjust-
ment seems sensitive verify that the LD330 is the correct range for your transducer.
Repeat steps 1 and 2 as necessary.
4.2 Decimal Points
The LD330 decimal point is factory set to custom specified range. Figure 2 below
shows the jumper settings required for decimal point settings.
To access this jumper, remove the 2 screws on the backside of the
LD330 housing and
remove the back
cover. Remove jumper
if decimal point is not
required.
4.3 Backlighting
The LD330V comes
standard with green
backlighting. LD330C is not
offered with backlighting. To disable backlighting of LD330V, remove the Back Light
Jumper shown in figure below.
Figure 2