SuperFlow AutoDyn, Руководство оператора

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M a n u a l
AutoDyn
Section 20 - Page 16
AutoDyn manual 1174 Sect20.PM6.5, 05/1999
20.3.6. Air temperature and humidity sensor
The air temperature and humidity sensors are both built into a
single probe. They cannot be calibrated in the field. If the
measured values appear to be incorrect, contact your Service
representative for repair or replacement of the sensor.
20.3.7. Optical tachometer
The optical tachometer does not require calibration other than
entering the correct number of pulses per revolution in the
Specifications file.
For the optical tachometer, use Specifications channel
87 . The
default value is 1 pulse per revolution.
20.3.8. Ignition spark pick-up
The ignition spark pick-up does not require calibration other
than entering the correct number of pulses per revolution in
the Specifications file.
For the ignition spark pick-up, use Specifications channel 83 .
The default value is 0.5 pulse per revolution.
20.3.9. Air flow sensor (SuperFlow air turbine)
The air flow sensor will be one of three available air turbines
produced by SuperFlow. These turbines are individually
calibrated and linearized at SuperFlow. The calibration is
tracked by turbine serial number (engraved near the cable on
the side of the turbine). Contact your Service representative
with this serial number if you cannot locate the calibration
information for your sensor.
The calibration values normally supplied with the air turbine
consist of:
•
an offset: this is the minimum flow required to produce
an output signal
• a frequency at a flow of 900 cfm (424.71 l/s)
These values must be calibrated for each turbine in channel 7
using the DEF Configuration Editor. See the section on the
Configuration Editor for more details.
Advanced users only
For the utmost accuracy it is possible to obtain the complete
air turbine calibration sheet from SuperFlow. This sheet
includes the output frequency of the turbine for ten different
test flow ranges. Channel 135 of the DEF Configuration has
been reserved for this information. Should you wish to use this
feature, you will have to modify your air flow channel calcula-
tions and references to include this channel.