Badger Meter 340N2 Series Metasys Btu Transmitter User Manual
Page 8
8
SPEcIFIcatIonS
Power
Power supply options:
12-35 VDC +/- 5%
12-24 VAC +/- 10%
Current Draw:
60 mA @ 12 VDC
Flow Sensor Input
All sensors:
Excitation voltage 3 wire sensors:
7.9 – 11.4 VDC 270W source impedance
Pulse type sensors:
Signal amplitude:
2.5 VDC threshold
Signal limits:
Vin < 35V (DC or AC peak)
Frequency:
0-10kHz
Pull-up:
2 k
W
Sine wave sensors:
Signal amplitude:
10 mV p-p threshold
Signal limits:
Vin < 35V (DC or AC peak)
Frequency:
0-10kHz
temperature Sensor Input
2 required:
10 k
W thermistor, 2 wire, type II, 10 kW @ 25°C
Pulse output
Opto-isolated solid state switch
Operating Voltage range:
0 - ±60V (DC or AC peak)
Closed (on) state:
Load Current - 700mA max. over operating temperature
range
On-resistance - 700mW max. over operating temperature
range
Open (off) state – leakage @ 70°C
<1µA @ 60V (DC or AC peak)
n2 output
RS-485 output compliant with
EIA / TIA - 485 standards
operating temperature
-29° C to +70° C
-20° F to +158° F
Storage temperature
-40° C to +85° C
-40° F to +185° F
Weight
4.8 oz. with headers installed
SEnSor calIBratIon
Badger Meter
Use K and Offset provided in sensor owner’s manual
other Sensors
Check with factory
unItS oF MEaSurE
Flow measurement
Rate:
gpm, gph, l/sec, l/min, l/hr, ft3/sec, ft3/min, ft3/hr, m3/sec,
m3/min, m3/hr
Total:
gallons, liters, cubic feet, cubic meters
Energy measurement
Rate
kBtu/min, kBtu/hr, kW, MW, hp, tons
Total
Btu, kBtu, MBtu, kWh, MWh, kJ, MJ
temperature units
Fahrenheit, Centigrade
ProGraMMInG
Requires PC or laptop running Windows
®
XP or Vista
Badger Meter Model A-302-20 programming kit containing
software and Model A302-20 programming cable