Metreg MQM - Technical Data; Pulse Generator Data

7
6. Technical Data
Meter type MQM Quantometer
Approval PED97/23/EC
Size G 10 to G 1000
Nominal diameter DN25(2“)toDN150(6“)
Pressure rating PN 16 and ANSI CLASS 150
Rangeability 20:1orhigherdependingontheoperationpressure
Temperature ranges
• gastemperature -20°Cto+60°C
• ambienttemperature -25°Cto+55°C
• storagetemperature -25°Cto+55°C
Housing material Aluminum
Max. operation pressure 20 barg
Accuracy Q
min
≤ Q < Q
t
:±3.0%
Q
t
≤ Q ≤ Q
max
:±1.5%
Q
t
=0,2Q
max
Meter index
Number of indexes 1
Number of digit rollers per index 8
Meterindexhead Composite(optional:Aluminum)
Protection class IP 65
Pulse generators
LF-pulse generator 1LF(reedcontact),add.1LFasoption
Contact type makecontact(normallyopen)
Max. contact load 10W
Max. switching voltage 50VDC/200VDC
Max. switching current 0.1 A / 0.5 A
Resistance 100 Ω in series to reed contact
Max. switching frequency f
max
500Hz
HF-pulse generator: 1HF(inductivesensor,acc.NAMURspecs)
Supplyvoltage 8.2VDC(internalresistanceof1kΩ)
Currentconsumption(sensorcovered) <1mA
Currentconsumption(sensorfree) >2.1mA
Max. switching frequency f
max
1500Hz
Anti tampering contact 1 Reed contact in series with 100 Ω resistor
Contacttype makecontact(normallyclosed)
Max.contactload 10W
Max.switchingvoltage 175VDC
Max. switching current 0.25 A
Resistance 100 Ω in series to reed contact