27
Configuring The Meter
4
4.3.2 Scaling Without Known Loads
To scale without known inputs, calculate input values based on the transducer
specifications and manually enter them on the front-panel pushbuttons. The following
example assumes a pressure transducer with these specifications:
Pressure Range:
0 to 2000 PSI
Output Span: 1 to 5 Vdc
1.
Determine the correct values for
IN1
and
IN!2
based on the transducer
specifications. In most cases,
RD1
&
RD!2
are equal to the minimum and
maximum of the transducer output span. The example assumes
RD1
&
RD!2
are
equal to the pressure range of the transducer (
RD1
= 0000 and
RD!2
= 2000).
Calculate
IN1
and
IN!2
using the transducer output span and the following
equation:
IN
= (Sensor Output) x (Natural Gain) x (Multiplier).
Table 4-3. Natural Gain
2.
Determine the multiplier by the Input Resolution setting (
R.2
in the
RD.CF
menu)
and the input range selected. Typically
R.2=4
is suitable for most applications.
Table 4-4. Input Resolution Multiplier
Input Range
R.2=4
R.2=3
R.2=2
R.2=1
R.2=0
0 to 100 mV
1.000
2.000
3.333
5.000
10.00
0 to 10 V
1.000
2.000
3.333
5.000
10.00
0 to 20 mA
1.000
2.000
3.333
5.000
10.00
± 50 mV
1.000
1.000
1.667
2.500
5.000
± 5 V
1.000
1.000
1.667
2.500
5.000
Input Range
Span Units
Natural Gain
0 to 100 mV
Millivolts
100 cts/mV
±50 mV
Millivolts
40 cts/mV
0 to 10 V
Volts
1000 cts/V
± 5 V
Volts
400 cts/V
0 to 20 mA
Milliamps
500 cts/mA
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Содержание DP25B-E
Страница 11: ...viii Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 70: ...59 NOTES Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 71: ...60 NOTES Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
