Wireless Interface - Apator ELF Technical Description

Pulse output
configuration
0.1
1
10
Note: The pulses are output though the CMOS gate. Proper performance requires galvanically separa-
ted interfaces from Apator-Powogaz. Operating the pulse output in the test (fast) mode the ma-
ximum frequency of which is 64 Hz, will significantly increase the battery power consumption. If
this operating mode is continuous, the battery life is reduced to approx. 1 year.
Note: The pulse generation method error in the energy or volume-proportional operating mode is +/- pulse.
When verifying the resolver performance by the total of pulses at the output, choose the verification time
(i.e. the number of pulses) to minimise the method error.
Example: The body is 0.6, the operating mode is volume proportional, and the flow Qp is 600
dm /h. The recommended number of pulses for flow measurement accuracy verification is 500.
3
Here the method error is 1/10 MPE i.e. 0.2 %, and the test will take approx. 30 seconds.

7.2. Wireless interface

KEY FEATURES
• Easy installation and removal.
• Installing the module does not tamper the
heat meter verification markings.
• Wireless data transmission.
• Plug & play system.
• Remote readability at a range of up to 100 m.
• IP54 protection rating.
Wireless module specifications
Enclosure
Antenna
Power supply
Operating temperature range
Operating frequency
Frequency variation
Modulation
Transmitter power
Receiver sensitivity
Mode
Transmitted registers
Register refresh rate
The available module versions are for installation in the enclosure and fully enclosed assemblies.
GJ
0.1 MJ/pulse
1 MJ/pulse
10 MJ/pulse
Integrated with the heat meter main enclosure by 2 snap
fasteners; electrical connection: 2x5 pin (2.54 mm matrix)
Internal, wire type ¼ λ
Lithium battery, 3.6 V, 1200 mAh, size ½ AA, installed in
the wireless module enclosure, battery life: ~10 years
ºC
MHz
kHz
dBm
dBm
serial number, error flags, date, heat energy, main volume,
supply temperature, return temperature, last month heat
energy
900 s (the register refresh interval is the time at which
the wireless module polls the heat meter for the register
contents)
- 21 -
Heat unit
kWh
0.01 kWh/pulse
0.1 kWh/pulse
1 kWh/pulse
COMPLETE
MODULE ASSEMBLY
View from the
connection pins side
0 ÷ +55
868.950
< ± 2.5
FSK, frequency deviation: ±50 kHz
10
-105
T1, data transmission period: 120 s
Gcal
0.1 Mcal/pulse
1 Mcal/pulse
10 Mcal/pulse
WIRELESS TRANS-
MITTER MODULE
(to be installed
in the enclosure)