Tisch Environmental PUF+, Руководство оператора

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PUF+ Operator’s Manual Tisch Environmental
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minimize errors that can occur while the electronics are still warming up. The error is
typically small, but doing this will provide optimal calibration results.
Calibrating a Sensor
The procedure for calibrating a sensor is similar regardless of what sensor is being used. The
exception to this is the Automatic Flow Calibration method which uses the Pcal sensor
attached to a calibration orifice to automatically calibrate the flow with limited user
interaction. This is described in the Automatic Flow Calibration section.
SENSOR: Tamb
POINTS: 0 R:0.0000
CURRENT: 0
ADC: 0
A1: 32.1179
A0: -1.2976
ADD REDO EDIT EXIT
The main calibration display is shown above. The SENSOR line shows the name of the
sensor being calibrated. The POINTS field shows the current number of calibration point
being used to determine the A1 and A0 values. The R field is an indication of how closely
the calculated calibration curve matches the raw data. The R field is only valid with 3 or
more data points. The closer the R value is to 1, the better the agreement between the
calculated and raw data. The CURRENT and ADC values show the calibration value using
the current calibration values and the raw analog to digital converter values. The A1 and A0
fields show the current gain and offset values for the sensor.
Similar to the Main Status Display, the calibration display uses the soft-menu function keys
F1, F2, F3, and F4 to navigate the calibration process. Each of the soft-menu function key is
described below.
Adding a Calibration Point (F1)
Pressing the F1 key (ADD) will begin the process of adding a calibration point to the data
used to calibrate the sensor. Adding a calibration point involves providing the unit with a
reference signal on the sensor being calibrated and then telling the unit what the value of that
signal is using a reference device. The following are screen shots from a adding a calibration
point to the Tamb (ambient temperature) sensor.
After pressing the F1 key, the screen below is displayed. A default reference value is
automatically selected. These are provided as guidelines so that the entire calibration range
of the sensors is used for the calibration. If a different value is being applied to the sensor,
simply enter the correct reference value. While maintaining a constant reference value to the
sensor, press the ENT key to begin data collection.