User manual

MetPak Doc No 1575-PS-0001 Issue 02 CN 4240 March 2006
12 TESTS
12.1 Bench test
1. Couple the MatPak to the host system and power supply, using a known working test cable.
2. Check that the unit is correctly configured by going into Configuration mode and using D3 See Section 9.3
Checking the configuration.
3. Check for normal output data, and that the Status Code is OK – 00
4. If the status code is other than 00, refer to Section 11.5 Status (error) codes.
5. Use an office fan or similar to check that the unit is sensing wind, turning the unit to simulate changing wind
direction and to check that both axes are functioning. The fan will also give output changes from the temperature
and relative humidity sensor.
6. Note that this a quick functional test.
7. Use the office fan to check the temperature and humidity sensor output.
12.2 Self-Test (Still Air) for WindSonic wind sensor.
This test checks Alignment, Gain, Checksums and can be performed from the RS232 port inside of the junction box.
Alignment tests : The unit performs a transducer geometry check and compares the result with its factory setting.
Gain tests : The unit performs a check of its operating gain against its factory setting.
Checksum tests : The unit performs a check of its program and data memory.
Important This test is a stringent laboratory test which will only be passed if carried out under still air conditions at
room temperature (17-23˚C). NOTE: Option 4 SDI-12 units must be in Gill mode for the self test to function (see Section
11) .
1. Place a cardboard box over the WindSonic sensor.
2. Go into Configuration Mode * ENTER .
3. Carry out the Self-test by entering D 6 ENTER .
A message similar to that shown below will be generated :
ALIGNMENT LIMITS:0D59,0CF5
ALIGNMENT U:OD15 *PASS*
ALIGNMENT V:OD16 *PASS*
GAIN 0:0001 *PASS*
GAIN 1:0001 *PASS*
GAIN 2:0001 *PASS*
GAIN 3:0001 *PASS*
CHECKSUM ROM:AB7D AB7D *PASS*
CHECKSUM FAC:04F4 04F4 *PASS*
CHECKSUM ENG:082A 082A *PASS*
CHECKSUM CAL:A9C1 A9C1 *PASS*
For each of the Alignment and Gain tests a Pass or Refer to Manual message is generated.
For each of the Checksum tests a Pass or Fail message is generated.
4. If any of the tests fail, contact your supplier.
If a “refer to manual” message appears please see Section 12.3 Fault Finding.
Note that it will only pass if the specified temperature and zero wind conditions are met.
Check that there are no visible obstructions or damage to the unit before contacting Gill or your authorised
distributor for further advice.
12.3 Calibration
A Custom calibration of the wind sensor is available from Gill Instruments. This must be specified at the time of order or
the unit must be returned to Gill Instruments for retrospective calibration. Calibration of the temperature and humidity
probe should be out in accordance with section 13.5 or 13.6.
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