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)
6.3.1 (con't)
11. Remove input pressure from High port on VELTRON DPT-
plus
.
12. 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
13. If Temperature is used, proceed with Step 14. If not, proceed with Step 22.
14. 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).
15. Adjust temperature signal for minimum value of temperature input value, which is indicated on the
display.
16. 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 --
17. Press and then , display will indicate:
Temperature Span
Calib: XXX ºF
18. Adjust temperature signal for maximum value of temperature input value, which is indicated on the
display.
19. Press , and display will indicate:
Temperature Span
-- Push ENTER --
20. 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 18 through 20.
21. Press and then , display will indicate: Return to
MAIN MENU
22. Press , and display will return to Main Menu.
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