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Wire
Color
Bl.K
GF�
GitY
WHT
APPENDIX D - ANALOG OUTPUTS (IF EQUIPPED)
If the instrument is equipped with the analog output option, there will be a five
pin connector on the bottom of the instrument. Also, an analog output cable will
be included with the instrument. This cable will have a five-pin connector on
one end and four tinned wires on the other end.
The instrument will output a Voltage between 0 and 5 Volts that corresponds to
the Air Velocity and Temperature measured by the instrument. The output
range, pin assignments, and wire colors are given in the table below. Also
shown is a block diagram of the analog output circuit.
Pin#
2
3
4
Analog Output
Corresponding
Measurement
Equation* to convert from
*To convert from Volts to Air Velocity in Feet per Minute, multiply by 2000.
►
For example, an analog output of 2.375 Volts on the green wire means that
the instrument is measuring an air velocity of 4750 feet per minute
(FPM).
►
2.375 Volts
x
2000 = 4750
FPM
*To convert from Volts to Temperature in degrees Celsius (
0
C), multiply by 20
and subtract 20.
►
For example, an analog output of 3.45 8 Volts on the white wire means that
the instrument is measuring a temperature of 49.16 °C.
► 3.458 Volts x 20- 20 = 49.16 °C
Rev 1.8, 1 0-Jun-2008
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Содержание HHF143
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