User's Guide

PE_QW1_V04_US
6
Maximum admissible working pressure (Pressure class) 16 bar (MAP16)
Flow profile sensitivity class U0 D0
Volume measurement unit’s GAL
Resolution of a displaying device 1 GAL
Displaying range 999999999 GAL
Display (LCD)
The device is equipped with 2- lines LCD (Liquid Crystal Display):
Upper line - 9-digits for displaying measured volume of water:
Readings in normal mode: GAL.
Lower line - 5-digits for displaying current flow rate, GPM, and special symbols for displaying
operation modes.
In the case of battery discharge, all integral readings and archive data shall be saved for at least 16
years and can be accessed by connecting a power battery in the operating condition.
Data recording and storage
In its memory, the meter accumulates an archive of hourly, daily, and monthly-measured parameters.
Archive data can be read only by remote data reading means (see Paragraph 6.5). The monthly data archive
parameters which are also additionally showed on the display are specified in Paragraph 6.3.1.
The following parameters of each hour, day, and month are accumulated in the memory of the meter:
1 Integral volume of water
2 Integral volume of water in the forward direction
3 Informational flow in the reverse direction
4 Maximum flow rate value and date
5 Info (Status) code
6 Total operating time
7 Operating time without error
Data logger capacity:
up to 1480 h – for hourly records.
up to 1130 days - for daily records,
up to 36 last months - for monthly records,
Archive data storage time not less than 36 months
Storage time of measured integrated parameters even if device is disconnected from power supply
not less than 16 years.
External communication modules and interfaces
Integrated in meter:
Optical interface
It is intended for data reading via Mbus protocol, parameterizing of meter, and for outputting optical
pulses in the test (verification) mode. It is activated by sending 1 s. pulse sequence (5 minutes after the end of
communication is automatically deactivated).
NFC (Near-field communication interface)
It is intended for data reading.
Ordered interface (to be specified when ordering the meter; one options can be selected only):
- RF 915 MHz
The data can be transmitted using the following protocols:
- LORA WAN;