8
Overview
SERIES 2000-RANGE-VALVE
Explanation Programming Points P101 to P116
Zero Adjustment (4 mA)
The transmitter as standard is adjusted to 4.00 mA at atmospheric pressure. It is also possible to adjust a zero-
suppression or elevation.
For example: zero elevation of 1 mWK.
1. Push at [PROG] until “100” is shown on the display.
2. Push once at [
h
] / SPAN till “101”.
3. Confirm this by pushing [PROG].
4. Now the display will show 0.00 mH
2
O. Push at [
h
] till 1.00 mH
2
O is on the display.
5. Confirm with [PROG].
6. The output of the transmitter will be lower than 4 mA. The output at atmospheric pressure will be for example 3.68 mA.
When a pressure of 1 mWC is applied on the diaphragm the output will be 4.00 mA.
The elevation can be canceled by pushing at [ZERO] till zero disappears out of the display. The transmitter is now adjusted
at 4 mA at atmospheric pressure.
P101
Span Adjustment (20 mA) Without Test Pressure
Before adjusting the span take care the right pressure unit is selected. (See also P104 and P109).
Example: Adjustment of the span at 0 - 2 bar.
First off all, the pressure unit must be adjusted at “bar”. (See P104 and P109).
1. Push [PROG] till “100” is shown on the display.
2. Push twice at [
h
] / SPAN until “102” is on the display.
3. Confirm this by pushing [PROG].
4. Push [SPAN] (+) or [ZERO] (-) to select the measuring range that is required.
5. Confirm by pushing [PROG]. The transmitter is adjusted now.
N.B.: P102 is the adjustment of the
total
span. When a “compound” range must be adjusted (for example -1 till +3 bar), a
span of 4 bar must be programmed. At P101 (ZERO,4 mA), -1 bar must be adjusted. Now the transmitter is adjusted at: - 1
bar = 4 mA and +3 bar = 20 mA.
N.B.:
It is not possible to show values larger than ‘9999’ or smaller than ‘–9999’ on the display. In this case the display will show:
- - - - For values larger than ‘9999’.
- - - - For values smaller than ‘–9999’.
As long as the display shows “- - - - “, the value will not be saved by pressing “PROG”.
P102