VELTRON DPT-
plus
Air Monitor Corporation
116-010-91.P65 (09/18/09)
VELTRON DPT-
plus
- IO&M Manual
SECTION 6 – CALIBRATION
6.3 – TRANSMITTER INPUT CALIBRATION (con't)
6.3.2 (con't)
13. Remove input pressure from High port on VELTRON DPT-
plus
.
14. Press and then , and depending on whether Temperature is being used as a process Param-
eter, display will indicate either:
Temperature Zero or
Return to
Calib: XXX ºF
MAIN MENU
15. If Temperature is used, proceed with Step 16. If not, proceed with Step 24.
16. If temperature signal is provided by temperature device, connect a current generator across Terminals
11 and 2 (see Figure 4.8). If temperature signal is powered by VELTRON DPT-
plus
, connect a loop
powered temperature simulator across Terminals 11 and 12 (see Figure 4.9).
17. Adjust temperature signal for minimum value of temperature input, which is indicated on the display.
18. Press , and display will indicate:
Temperature Zero
Settle Time:4 Sec
Display will count down to 0, after which it will indicate:
Input Zero Done
-- Push ESCAPE --
19. Press and then , display will indicate: Temperature Span
Calib: XXX ºF
20. Press , and display will indicate:
Temperature Span
-- Push ENTER --
21. Adjust temperature signal for maximum value of temperature input, which is indicated on the display.
22. Press , and display will indicate:
Temperature Span
Settle Time:4 Sec
Display will count down to 0, after which it will indicate:
Input Span Done
-- Push ESCAPE --
Note: If span input is less than 80% or greater than 120% of Temperature maximum input (see Factory
Set-Up Information Sheet), display will indicate:
Bad Input Span
-- Push ESCAPE --
If this occurs, check input signal and readjust as necessary. Press and repeat Steps 20 through 22.
23. Press and then , display will indicate: Return to
MAIN MENU
24. Press , and display will be in Main Menu.
50
X
X
X
X
