Badger Meter 340 BN/MB Btu Energy Transmitter - Manual (Page 5)

INTRODUCTION
The Data Industrial 340 BN/MB Btu Energy Transmitter from Badger Meter is an economical, compact device for hydronic
sub-metering applications It uses an RS-485 connection for Modbus® and BACnet communication protocols and a solid state
switch for pulse output representing either flow or energy
The 340 BN/MB Btu Energy Transmitter calculates thermal energy by integrating the liquid flow in a closed pipe system and
the differential temperature between the supply and return The 340 BN/MB Btu Energy Transmitter requires one flow sensor
and two temperature sensors
The temperature sensors can be two-wire 10k Ω Type II Thermistors or 100 or 1000 Ω RTDs that follow the IEC 751 curve
The flow input may be provided by many of the Data Industrial line of flow sensors and other manufacturers' devices that
generate pulse or sine waves
The onboard microprocessor and digital circuitry make precise measurements and produce accurate drift-free output The
340 BN/MB Btu Energy Transmitter is programmed using the Badger Meter Windows® software and a Data Industrial Series
A301 programming cable Calibration information for the flow sensor, units of measurement, communication protocol
settings and output scaling may be downloaded prior to installation or in the field
The RS-485 Modbus settings include Baud Rate, Address and RTU/ASCII
The RS-485 BACnet is an MS/TP slave device and includes Address, Baud Rate, Device Name, Device Instance Number and Max
Master Valve
While the unit is connected to a PC or laptop computer, real-time flow rate, flow total, both temperature readings, energy rate
and energy total are available
The 340 BN/MB Btu Energy Transmitter features three LEDs to indicate flow sensor activity, RS-485 activity and pulse output
The 340 BN/MB Btu Energy Transmitter has an isolated solid state switch closure that is user programmed for units of energy
or flow The output pulse width is adjustable from 10 ms to 5 sec
The 340 BN/MB Btu Energy Transmitter operates on AC or DC power supplies ranging from 12 to 24 volts
The compact cast epoxy body measures 3 65 x 2 95 inches (93 x 75 mm) and can be easily mounted on panels, DIN rails or
enclosures
INSTALLATION
Mechanical Installation
The 340 BN/MB Btu Energy Transmitter may be surface mounted onto a panel, attached to DIN rails using adapter clips or wall
mounted using two optional enclosures
Location
Although the 340 BN/MB Btu Energy Transmitter is encapsulated, all wiring connections are made to exposed terminals The
unit should be protected from weather and moisture in accordance with electrical codes and standard trade practices
In any mounting arrangement, the primary concerns are ease of wiring and attachment of the programming cable
The unit generates very little heat so no consideration needs to be given to cooling or ventilation
Installation & Operation Manual
Page 5 July 2012