VELTRON II
Air Monitor Corporation
116-011-98.P65 (8/30/10)
VELTRON II - IO&M Manual
SECTION 6 – CALIBRATION
6.3 – TRANSMITTER INPUT CALIBRATION (con't)
6.3.3
For Units With Bi-Polar Spans.
Minimum and maximum transducer natural span pressure will be applied to the VELTRON II, unit will be programmed
to recognize these pressures as zero and span for transmitter input calibration.
1. Connect input pressure to Low port of VELTRON II.
Transmitter Input
2. While in Main Menu, scroll to:
Calibration
3. Press
ENT
, and display will indicate:
Transducer Zero
Calib: -X.XX in.WC
4. Apply input pressure (as read on manometer) to the Low Port of the VELTRON II. Adjust pressure to equal
the positive equivalent of the minimum (negative) transducer natural span value, which is indicated on the
display.
5. Press
ENT
, and display will indicate:
Transducer Zero
-- Push ENTER --
6. Press
ENT
, and display will indicate:
Transducer Zero
Settle Time:4 Sec
Display will count down to 0, after which it will indicate: Input Zero Done
-- Push ESCAPE --
57
7. Press
ESC
and then
UP
, display will indicate:
Transducer Span
Calib: +X.XX in.WC
8. Apply input pressure (as read on manometer) to the High port of the VELTRON II. Adjust pressure to equal
the transducer natural span value, which is indicated on the display.
9. Connect input pressure to the High port of the VELTRON II.
10. Press
ENT
, and display will indicate:
Transducer Span
-- Push ENTER --
11. Press
ENT
, and display will indicate:
Transducer Span
Settle Time:4 Sec
Display will count down to 0, after which it will indicate: Input Span Done
-- Push ESCAPE --
Note:
If pressure input is less than 40% or greater than 110% of transducer's natural span value (see
Factory Set-Up Information Sheet), display will indicate:
Bad Input Span
-- Push ESCAPE --
If this occurs, check input pressure (as read on manometer), and readjust as necessary. Press
ESC
and
repeat Steps 8 through 11.
Summary of Contents for VELTRON II
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