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5.
Communication
The flow sensor has two pulse outputs for connec-
tion to a heat meter.
ƒ
Useful pulse
ƒ
Test pulse (high resolution for testing labora-
tories)
The electrical data of the useful pulse are defined
as:
Designation
External power supply
Output current
Open collector (drain)
Cable length to the partial
unit energy meter
Output frequency battery
supplied
Output frequency with
external power supply
Useful pulse value
Pulse duration
Potential-free contact
(optional)
6.
Temperature loads
Operating / ambient conditions
ƒ
Standard: 5 ... 55 °C; IP 54; 93 % rel. humid-
ity
ƒ
Sealed: 5 ... 55 °C; IP 68; 93 % rel. humidity
Media temperatures
Configuration
Heat - battery supplied
Heat - externally supplied
Cold - battery supplied
Cold - externally supplied
1) Only in riser / downpipe or in horizontal, tilted mount-
ing position
Note that in heat applications, the water
temperature must be greater than the
ambient temperature.
Once commissioned, avoid frost at the meter.
Value
UC < 30 V
< 20 mA with a residual
voltage of < 0.5 V
< 10 m
< 20 Hz
< 150 Hz
10 ml ... 5000 l (depend-
ent on the rated value and
power supply)
1 – 250 ms ± 10 %;
Pulse duration < Pulse
pause
Temperature range
5 ... 90 °C / 5 ... 105 °C
1)
q
0.6 ... 2.5 m³/h:
p
5 ... 130 °C
q
3.5 ... 60 m³/h:
p
5 ... 150 °C
5 ... 90 °C / 5 ... 105 °C
1)
5 ... 120 °C
Use unsealed flow sensors:
ƒ
at water temperatures permanently above
ambient temperatures
Use sealed flow sensors:
ƒ
For cold applications or T
ƒ
If permanent condensation is expected
7.
Disposal
The meter (standard version) contains a
lithium battery, which is not rechargea-
ble. Do not use force to open the battery.
It must never come into contact with water,
short-circuited or exposed to temperatures over
75 °C.
Empty batteries and no longer required electronic
devices or components are hazardous waste.
This device must not be disposed together with
the domestic waste.
Return it to the manufacturer for recycling.
8.
Declaration of conformity for MID
meters
See from page 52 onwards.
Further information as well as the actual declara-
tion of conformity are available at:
https://www.diehl.com/metering/en/diehl-
metering/support-center/downloads
< T
water
ambient
-9-
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