E-RM 30
Installation and service manual
M2016/09f[EN]
3. C
ONSTRUCTION
AND
TECHNICAL
DATA
3.1. T
ECHNICAL
DATA
Environment temperature
5 to 50 °C
Billing period
e.g. chapter 2.1. Type list
Calendar functions
month consumption, 12 months history (standard flow and backflow)
Data reading
radio and infra-red interface
Protection against cheating
backflow detection for example, reversal of the meter
electronic seal – records the data of any manipulation or removal of
device
magnetic pole deletction (> 3 mT) – only E-RM 30.3**
an option to mechanically lock the radio module to the water meter
Backup data
daily backup of measured values including real time
Function control
automatic
Dimensions
70 x 44 x 71 mm
Power suply
lithium battery 3 V
Calculat. battery lifetime
e.g. chapter 2.1. Type list
Material
polycarbonate
IP code
IP64
Class of climate and
mechanical environment
B
Class of electromagnetic
environment
E1
Working frequency
868 MHz
Transmitting wattage
< 5 mW
Class of operating cycle
1 (percent of operating cycle <0,1 %)
Length of transmission
< 8 ms
Transmission frequency
E-RM 30.**1 (year billing period)
•
60-66 seconds first month after beginning of billing period
•
240-246 seconds rest of the year
E-RM 30.**2 (month billing period)
•
60-66 seconds first 3 days after beginning of billing period
•
240-246 seconds rest of the year
Transmition
up to 500 m (with standard antenna, reading carried out by antenna
ZZ P- 868
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