Gill Instruments 1561-PK-020 User Manual

WindMaster and WindMaster Pro 1561-PS-0001. Issue 11 February 2017
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9.6. Polar wind direction wraparound
The wind direction in Polar mode can be configured for either 360 or 540 Wraparound. If the 360 mode is used with
a chart recorder, large swings of the recorder pen will be experienced each time the wind direction passes between 0 and
359. Using the 540 mode, when the wind first changes from 0 to 359, there will be a step change on the output, but
after this first time the output will change smoothly each time the wind passes through 360. (Similarly, the first time
the wind veers from 539 to 180, there will be a step change, after which the output will change smoothly).
NOTE: Values given for guidance, considering a clockwise spin in Wind Direction
Output
Voltage
0 to 5V
Voltage
 2.5V
Voltage
 5.0V
Current
4 - 20 mA
Current
0 - 20 mA
360
0

0.00
-
2.50
-
5.0
4.00
0.00
180

2.50
0.00
0
12.00
10.0
0
359.9

5.00
+2.50
+5.0
20.00
20.00
540 wraparound
0

0.00
-
2.50
-
5.0
4.00
0.00
180

1.67
-
0.83
-
1.66
9.33
6.67
360

3.33
+0.83
+1.66
14.67
13.33
539.9

5.00
+2.50
+5.0
20.00
20.00
9.7. Speed of Sound and Sonic Temperature
Scaling for Speed of Sound and Sonic Temperature (Instrument Software version 2329-110 onwards) is as follows:-
Sonic Temp
(Deg C) -40 -30 -20 -10 0 10 20 30 40 50 60 70
SOS (m/s)
300.00
306.36
312.73
319.09
325.45
331.82
338.18
344.55
350.91
357.27
363.64
370.00
+/-5V -5.00 -4.09 -3.18 -2.27 -1.36 -0.45 0.45 1.36 2.27 3.18 4.09 5.00
0-5V 0.00 0.45 0.91 1.36 1.82 2.27 2.73 3.18 3.64 4.09 4.55 5.00
+/-2.5 -2.50 -2.05 -1.59 -1.14 -0.68 -0.23 0.23 0.68 1.14 1.59 2.05 2.50
4-20mA 4.00 5.45 6.91 8.36 9.82 11.27
12.73 14.18 15.64
17.09 18.55
20.00
0-20mA 0.00 1.82 3.64 5.45 7.27 9.09 10.91 12.73 14.55
16.36 18.18
20.00
9.8. Status
If an output is configured for Status reporting (using Gill Wind Software) then example levels will be as follows for
good signal high, bad (error) signal low depending on output type. High/Low table contents will be reversed if good
signal low, bad signal high is used.
Note:-
Under a fault condition (status code not 00) analogue output wind readings will hold the last known good analogue
value until the status fault changes back to 00, However Speed of Sound and Sonic Temperature will read full scale.
9.9. Default Output
If a unit has analogue outputs then the factory settings are:-
Channel 1 0-5v, Polar Wind Angle, 0-360 degrees.
Channel 2 0-5v, Polar Wind Speed, 0-5m/s.
Channel 3 0-5v, W Wind Speed, 0-5m/s.
Channel 4 0-5v, Status.
Good Signal status code (high)
+5V
+2.5V
+5v
20mA
20mA
Error Signal Status Code (low)
0V
-
2.5V
-
5V
0mA
4mA

Gill Instruments 1561-PK-020 Specifications

General

Brand	Gill Instruments
Model	1561-PK-020
Category	Measuring Instruments
Language	English