Badger Meter 340LW Series Lonworks Btu Transmitter - Manual (Page 2)

2
The Badger Meter Series 340LW Btu Transmitter is an economical, compact device for sub-
metering applications that use the L
ON W ORKS ® protocol in an addressable network.
The Series 340LW calculates thermal energy using the signal from a fl ow sensor installed in
a closed pipe system, and the signals from two 10k
Ω temperature thermistors installed in the
systems inlet and outlet points. The fl ow input may be provided by any Badger Meter sensor and
many other pulse or sine wave signal fl ow sensors.
The onboard microcontroller and digital circuitry make precise measurements and produce
accurate, drift-free outputs. The Series 340LW is commissioned using Badger Meter Windows
®
based software. Calibration information for the fl ow sensor, units of measurement and output
scaling may be preselected or entered in the fi eld. While the unit is connected to a PC or laptop
computer, real-time fl ow rate and total, temperatures and energy rate and total are available.
The Series 340LW Transmitter features three LED’s to verify input and output signals.
The L ON W ORKS communications protocol allows the Series 340LW to be assigned to any one
of 255 addresses on a single 2-wire buss. Outputs may include raw data such as fl ow rate and
temperature of either thermistor, or computed or stored data such as: energy rate; energy total;
fl ow total; or temperature differential.
The Series 340LW Btu Transmitter operates on AC or DC power supplies ranging from 12 to 24
volts.
The compact cast epoxy body measures 3.65 inch (93mm) x 2.95 inch (75mm) and can be easily
mounted on panels, DIN rails or enclosures.