16 th bit (most right) 0
8.1.6.5 Getting Data Messages
You can get data messages with the aR4 command.
An e
xample response:
0R4,Tr=111.3C,Ra=0.0M,Sl=0.001208V,Sr=0.000029V
Tr
Pt1000 (C = Celsius, F = Fahrenheit)
Ra
Aux rain accumulation (M = mm)
Sl
Ultrasonic level sensor (V = volts at input * gain)
Sr
Solar radiation (V = volts at input * gain)
You can set the gain for Sr and Sl.
8.1.6.6 Aux Rain Sensor Settings [aIA]
Gain [G]
[G] defines the pulses per rain unit, for example in mm.
If the A
ux sensor has 10 pulses per a millimeter of rain and the user sets the gain to 1/10, the
transmitter reports the rain value in mm.
The range: 0.000 000 001 … 1 000 000
For example, you can set aux rain gain for Vaisala RG13 Tipping Bucket Rain Gauge. The
resolution is 0.1 mm per tip. Set the gain to 0.1 * 2 = 0.2 so that the Ra rain amount WXT
reports is in millimeters. The multiplier 2 means that the tipping bucket sends one pulse per
2 tips.
Reset Mode [M]
M defines the reset mode.
Parameter Description
M
No reset
L
Based on limit
A
Automatic (aux rain message sent)
Chapter 8 – Sensor and Data Message Settings
141
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www.streamlinemeasurement.co.uk
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