VT...40
Technical data
Technical changes reserved
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8
Technical data
The technical data of customised versions may differ from the data in these instructions.
Please observe the information specified on the type plate.
8.1
VT...40 with pulse output
Type
VTH40
VTM40
Characteristics measurement device
Measuring range
0.4…25 m
3
/h (6.7...417 l/min)*
Accuracy
±
7 % of reading (0.4…3 m
3
/h)
±
5 % of reading (3…25 m
3
/h)
Repeatability
±
0.5 %
Signal output from
> 0.28 m³/h (> 4.7 l/min)
Sensor
Hall effect sensor
Characteristics output signal
Pulse rate / K-factor
26.6 pulses/l
Resolution
37.6 ml/pulse
Signal shape
Square wave signal
NPN open collector
Max. signal current
19 mA
Pull-up-resistor
5 k
Ω (
recommendation)
Electrical characteristics
Supply voltage
10...30 V
DC
optional: 4.5…26.5 V
DC
6.5...24 V
DC
±
10%
short circuit proof and
reverse polarity protected
Electrical connection:
-
Cable, shielded
T
max
=
4-pin plug
2 m (PVC)
75 °C
-/-
-/-
M12 x 1
Degree of protection
(EN 60529)
IP 54
Process variables
Medium temperature, max.
85 °C
Medium temperature, min.
0 °C, non-freezing
Ambient temperature
0…75 °C
0…85 °C
Nominal diameter
DN 40
Nominal pressure
PN 10
PN 50
Particle size in the medium
< 0.63 mm
Integrated screen filter
Flat filter, mesh size 0.63 mm
Process connection
G 2 male thread, supplementary screwed connection recommended
* Not suitable for continuous operation.
