Lufft VENTUS-UMB - Measurement Output; Virtual Air Temperature; Heating Temperature; Air Pressure

Operating Manual V25/09.2019 Ventus / Ventus-X / V200A
Chapter 8 Measurement Output 11
8 Measurement Output
The factory default setting for the transmission of measurements is UMB binary protocol.
You can find an example of a measurement request for the various protocols and a complete
summary of the list of channels in the Appendix.
8.1 Virtual Air Temperature
Sampling rate 1 – 10 seconds
Generation of average value 1 – 60 measurements
Units °C; °F
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
100
120
140
160
Virtual air temperature
-50.0
70.0
°C
105
125
145
165
Virtual air temperature
-58.0
158.0
°F
Note: In order to transmit the current measurement value the second measurement values are
averaged over the sampling rate.
8.2 Heating Temperature
Sampling rate 1 – 10 seconds
Generation of average value 1 – 60 measurements
Units °C; °F
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
112
Heating temperature top
-50.0
150.0
°C
113
Heating temperature bottom
-50.0
150.0
°C
117
Heating temperature top
-58.0
302.0
°F
118
Heating temperature bottom
-58.0
302.0
°F
8.3 Air Pressure
Sampling rate 10 seconds
Generation of average value 20 measurements
Units hPa
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
300
320
340
360
Absolute air pressure
300.0
1200.0
hPa
305
325
345
365
Relative air pressure
300.0
1200.0
hPa
Note: For pressure measurement a hardware version equal or greater than 3.0 and a software
version equal or greater than 1.6 is necessary!
8.3.1 Air Density
Sampling rate 10 seconds
Unit kg/m³
Request channell:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
Unit
310
Air Density
0.0
3.0
kg/m³
Note: Relative humidity is required for the calculation of air density. As Ventus-UMB does not
include a humidity sensor, an adjustable standard value is applied. With UMB-ConfigTool.NET
this value can be adapted to the conditions at the location of installation (see Chapter 12.2.8) .
Factory setting is 75% rel. humidity.