Appendix D - Analog Voltage Outputs - Kanomax 6812 User Manual

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APPENDIX D – ANALOG VOLTAGE OUTPUTS
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 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.
Wire
Pin
Color # Function
BLK 1 Ground
GRN 2 Air Velocity
GRY 3 --- Not Used ---
WHT 4 Temperature
*To convert from Volts to Air Velocity in Feet per Minute, multiply by 2000.
► For example, an analog output of 2.375 Volts means that the instrument is
measuring an air velocity of 4750 feet per minute (FPM).
► 2.375 Volts 2000 = 4750 FPM
×
Note: When using analog outputs, there is an additional ±1% error in the
analog output voltage. This is in addition to the normal measurement error.
► For example, an air velocity reading of 500 FPM would normally have an
accuracy of ±1% of reading ±1 digit (±6 FPM) when the data is viewed
on the LCD display.
► With the additional error associated with the analog output voltage, the
effective accuracy of the analog output for this air velocity measurement
will be ±2% of reading ±1 digit (±11 FPM).
Custom Analog Voltage Outputs are also available – contact Kanomax for details.
www.
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(IF EQUIPPED)
Corresponding
Analog
Output Measurement Equation* to convert from
Voltage Volts (V) to Measurement
Range Range
--- N/A --- --- N/A ---
0 to 5 0 to 10,000
Volts FPM
--- N/A --- --- N/A ---
0 to 5 Temperature [°C] = 20×V
Volts -20°C to 80°C
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Value
--- N/A ---
Air Velocity = 2000×V
--- N/A ---
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