VELTRON DPT 2500-
plus
Air Monitor Corporation
116-047-20.PMD (5/5/11)
VELTRON DPT 2500-
plus
- IO&M Manual
SECTION 6 – CALIBRATION
6.4 – TRANSMITTER OUTPUT CALIBRATION
1. Scroll Main Menu to:
Transmitter Output
Calibration
2. Press , and display will indicate:
Output Zero Calib.
3. Press , and display will indicate:
Output Zero Calib.
Perform Calibration
4. Connect a DMM set for the type of output your unit is configured for. DMM should be reading minimum value
of (4.00 ± 0.01mA or 0 ± 0.01VDC).
5. If DMM is reading out of tolerance, use or to adjust VE
LT
RON DPT 2500-
plus
output for an accept
a
ble
DMM reading.
Depending on DMM's selected range the or button may need to be pressed and held for a period of
time before any change occurs in the DMM's display
.
To speed up changes in output, pushbutton combinations
can be used. The following chart lists these combinations along with the associated change in output.
PUSHBUTTON COMBINATION
4-20mA
only
+0.001mA
only
–0.001mA
+0.01mA
-0.01mA
+0.1mA
–0.1mA
+1.0mA
–1.0mA
*Must be pressed and held before other button(s) are pressed.
26
X
+
*
X
+
*
+
*
+
*
X
+
*
and
X
+
*
and
Summary of Contents for VELTRON DPT 2500-plus
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