Section 5
Calibration Procedures
Calibration Procedures
43
STEP 6:
Wait for the fifth (5
th
) data message from the sensor. Verify that the
forward-scatter MOR (located in 4
th
field) is the maximum range set for
the sensor under test.
STEP 7:
SWS-200 – LW Only
. Send the command “BB? <crlf>”.
Verify that the response value is 000.00 ± 0.20
STEP 8:
Remove the foam plugs.
MOR gain Check:
STEP 9:
Send the command “RST<crlf>” to restart the sensor.
Verify the response is “OK”.
STEP 10:
If the sensor is operating in the polled mode, send “D?” command at 60
seconds intervals. (If the sensor is set to automatically output data then
the sensor will output data every 60 seconds.)
STEP 11:
Wait for the fifth (5
th
) data message from the sensor. Verify that the
forward-scatter MOR (located in 4
th
field) is within ± 10% of the value
assigned to the calibration reference plaque (the value on the label
attached to the plaque).
STEP 12:
Send the command “BB? <crlf>”.
Verify that the response value is within ± 20% of the value assigned to
the calibration reference plaque.
STEP 13:
Remove the calibration reference plaque from the sensor.
If the results of the calibration check have agreed with the value on
the label attached to the calibration reference plaque re-calibration is
NOT required.
A re-calibration is required ONLY if the MOR values are outside those
on the calibration reference plaque AND the calibration check has
been carried out ACCORDING TO THE CALIBRATION CHECK NOTES
on page 42.
Summary of Contents for SWS-100-LW: SWS-200-LW
Page 1: ...SWS Lightweight Series Visibility Present Weather Sensors SWS 100 LW SWS 200 LW...
Page 2: ......
Page 10: ...viii INTENTIONALLY BLANK...
Page 75: ...Notes 65 Notes...
