Metreg MQMe - Technical Data

5 Technical Data
Meter data
Approval
ATEX 2014/34/EU/IECEx Ex-Zone (*in preparation);
Ex ia II C T4 Ga; PED 2014/68/EU
Size
G 10 to G 1.000
Nominal diameter
DN25 (1“) to DN150 (6“)
Pressure rating
PN 16 and ANSI CLASS 150, PN4 with screw connection
Measuring range
1:20, exception DN25 (1“ and 1,5“) with a range of 1:10
Temperature range
Gas temperature
Ambient temperature
Storage temperature
-20°C to +55°C
-25°C to +55°C
-25°C to +55°C
Housing material
Aluminum
Max. operating temperature
16 bar absolute (ANSI 150 optional)
Accuracy
Q
min
≤ Q <Q
max
: ±1.0% of Q
max
Electronic meter index
Counter
Electronic index with 9 digits
Meter index head
Aluminum alloy
Protection class
IP65
Battery
Lithium ion battery (calculated service life: 5 years under standard conditions, i.e. ambient
temperature 15–20°C/59–68°F)
Display
LCD display for flow rate and volume under operating and standard conditions for pressure,
temperature as well as battery status
Buttons
4 buttons
Memory
Non-volatile 512-k EEPROM memory for storage of parameters
Integrated volume corrector
(option)
Compressibility factor calculation according to AGA NX-19 or K = constant.
For version with pressure and temperature sensor (AGA NX-19) only with external power supply
Standard conditions
Standard pressure 1,013.25 mbar, standard temperature 273.15
K (0°C); standard pressure and
standard temperature are adjustable
Parameterization
Set in factory
Digital and analog outputs
LF pulser (standard)
Contact type
Max. voltage
Max. current
Max. resistance
Max. switching frequency f
max
Floating reed contact (open collector)
Normally open
24 V
110 mA
5.1 Ω
10 Hz
HF pulser (alternative)
Max. voltage
Max. current
Max. resistance
Max. switching frequency f
max
Floating reed contact (open collector)
24 V
110 mA
5.1 Ω
1,000 Hz
External HF pulser (option)
Supply voltage
Power consumption
Power consumption
Max. switching frequency f
max
Additional inductive sensor on the outside of the meter housing according to NAMUR (scanning at
the turbine wheel, only with external power supply)
8.2 VCC (internal resistance 1 kΩ)
(sensor covered) <1 mA
(sensor free) >2,1 mA
2,500 Hz
Analog output (option)
4–20 mA output (only with external power supply)
Data communication
RS485 interface (option)
Modbus RTU (only with external power supply)
M-Bus interface (option)
M-Bus
Frequent data retrievals on an MQMe in battery mode will affect battery life.
7