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Commissioning
6.8
Integral heat meter (if fitted)
The heat meter complies with the requirements of the European
Directive MID 2004/22/EC modules B and D and of the standard EN
1434 class 2.
Technical data
integrator
Temperature sensors
Temperature sensor 2 wires
Diameter
Cables length
Admissible range
Differential range
Response limit
Temperature resolution (display)
Temperature resolution Δt
Measurement cycle for temperature
1)
Measurement cycle for flow
Environment class
Environment class
Mechanics
Electronics
Battery protection class
Cable connection between flow sensor and
integrator
Protection index
Permissible temperature
Operation
Storage and transport
Display
Display
Display units
Energy
Volume
Temperature
Δ temperature
Power supply
Lithium battery 3V
Powered by M-Bus line
Table 27
1) the oscillating measurement principle and the differential pressure piezo sensor
ensures at any time that all pulses, ie, all volume is detected. In contrary to the
ultsasonic measuring principle, no scanning with a signal through the water is
necessary.
Integrator pulse output option with accessary only
Pulse output
Open drain (MOS Transistor)
Vcc
: 35 V
; ICC
: 25mA
max
DC
max
Pulse inputs with a dry contact
Power supply internal
R
pull UP internal
Pulse factor
Table 28
38
The heat meter is designed on the basis of the proven fluid oscillation
principle. Due to the use of a static flow sensor, the heat meter does not
have any moving parts and thus no wear. The fluid oscillation principle
guarantees a high stability and repeatability for a reliable and precise
measurement of flow and thermal energy.
The heat meter consists of a static fluid oscillator flow sensor for flows
from qp 0.6 - 2.5 m
integrator and a pair of temperature sensors covering an operation
range from 5 °C - 90 °C.
Pt1'000
Ø 5.0; Ø 5.2, Ø 6.0 mm
Main features
1.5 m
The heat meter optimized for the measurement and calculation of energy
consumption in district or local heating systems.
0...110 °C
• Complies with the requirements of the European Directive MID
3...75 °C
0.5 K
• Flow of qp 0.6 - 2.5 m
0.1 K
• Corrosion resistant materials.
0.01 K
• No moving parts, thus no wear.
from 10 seconds
• Not sensitive to dirt.
Permanently
• Stable.
• Direct pick-up of voltage pulses without reflectors.
C
• Long-term stability, accurate and reliable measurement.
M1
• Easy to operate and read.
• Non-volatile EEPROM memory.
E1
• 18 monthly energy values for heat energy, volume and for the set day
III
0.6 m, fix
• Self-monitoring of conditions.
IP 65
Functions
• Recording heat consumption by means of measuring the flow and
5...55 °C
• Displaying consumption data:
-10...60 °C
8-digits LCD
kWh, MWh, MJ, GJ
Energy calculation
3
m
The flow sensor records the flow. Using a microprocessor, the integrator
°C
calculates the temperature difference and calculates the thermal
K
energy, respectively the heating energy, consumed using the average
flow and the heat coefficient.
6+1 or 12+1 years
Monthly values
1 device = 2 M-Bus
At the end of each month, the monthly values are stored. A total of 18
charges
monthly values of heat energy are volume are memorized in the
(max 2 x 1.5mA)
integrator.
Powered remote M-Bus
The powered remote M-Bus communication interface is a serial interface
which permits communication between different M-Bus devices via a
central M-Bus station.
The M-Bus protocol is compliant with standard EN1434-3.
By default, the primary address will be configured with the address 0
and the secondary address will correspond to the serial number of the
heat meter.
1 Hz, 500 ms
Technical data for the M-bus communication system:
M-Bus protocol compliant with standard EN 1434-3; free potential
interfacing without polarity (the voltage measured on the last device
2.3 V
DC
must exceed 36VDC); transmission speed 300/2400 Baud; variable
2 M Ω
data structure.
3
0...999.999 m
/Imp
Type of cable recommended: telephone cable JYStY N*2*0.8 mm
or without unit
3
/h, in permanent connection with a removable
2004/22/EC modules B and D and of the standard EN 1434 class 2.
3
/h.
values.
temperature difference.
– 18 monthly energy and volume values.
– Set day values.
– Operating data.
– Self-monitoring with error display.
2
.
6 720 808 928 (2017/06)
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Troubleshooting
