Secure Liberty EG4v12 - Meter Specifications; General and Metrology Specifications

Page 12 of 32 Liberty gas EG4v12 user cum maintenance manual BGX701-240-R01
4 Meter specifications
4.1 General specification
Specification Description
Mechanical
Weight (in kg)
Approx. 2.5 kg
Case work Pressed steel
Finish Powder coating
Diaphragms Synthetic
Shut off valve
Internal electrically operated, operational life 2000 cycles
(2000 On and 2000 Off operations)
Sealing provisions Two sealable battery cover screws
Index English
Max index reading 99999.999 m
3
Gas connections 3/4” BS 746
Keypad Silicon material
Display
LCD with backlight, ten starburst character (7mm high)
with icons.
Viewing angle
18
0
to 20
0
at 12 o’clock and 6 o’clock
25
0
at 3 o’clock and 9 o’clock from normal to window
Compliance
Metrology
BS EN 1359
Fire resistant EN1359 (pressed steel version)
Metrology
Cyclic volume
1.2dm
3
(Liberty EG4v12)
Flow
range
Qmax 2.5 m
3
/hr
Qmin 0.016 m
3
/hr
Starting flow rate 3.0 dm
3
/hr
Maximum working
pressure (Pmax)
0.5 bar
Gas type Natural
Environmental
Operating temperature
(Tmin to Tmax)
- 10 °C to + 55 °C
Storage temperature - 25°C to + 60 °C
Ingress protection IP54 (EN60529)