VELTRON DPT-
plus
Air Monitor Corporation
116-010-91.P65 (09/18/09)
VELTRON DPT-
plus
- IO&M Manual
46
This section will detail steps necessary to calibrate the VELTRON DPT-
plus
. Calibration is accomplished using the four
programming push buttons detailed in Section 5.
This section can be accomplished with the VELTRON DPT-
plus
mounted in its operating location or at a test bench in
a calibration lab.
If calibrated at a test bench, the VELTRON DPT-
plus
should be positioned in the same attitude as in its operating
location.
6.1 – REQUIRED EQUIPMENT
1. Digital Manometer capable of reading to the nearest 0.001" w.c.
2. Digital Multimeter.
3. Source of clean, dry instrument air.
4. Adjustable low pressure regulator, such as AMC "Low Pressure Air Source" or equal.
5. Temperature simulator or current generator.
6.2 – PREPARATION
1. Turn Power to the VELTRON DPT-
plus
OFF.
2. Remove both covers of the VELTRON DPT-
plus.
3. Slide switch S1-"AZ Valve" to the ON position (see Section 9 for location).
4. Remove Low and High pressure signal lines to the VELTRON DPT-
plus
.
5. Remove all wires connected to terminals 1 through 10 (see Figure 4.4).
6. Prepare test equipment as shown in Figure 6.1.
7. Turn Power ON.
Figure 6.1
6 – CALIBRATION
SECTION 6 – CALIBRATION
