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Type 340 LW-LonWorks® BTU Transmitter

Brand: Badger Meter

The Series 340LW BTU transmitter is an economical, compact device for sub-metering applications requiring addressable network output capabilities using the LonWorks® protocol.

An economical, compact device for sub-metering applications that communicate via a LonWorks® network.

Calculates thermal energy in a closed pipe hydronic system by integrating the flow and temperature inputs.
Features
  • On-board microcontroller and circuitry make precise measurements and produce accurate, drift-free outputs
  • Calibration information for the flow sensor type and pipe size may be preselected or entered by the user in the field
  • Calculates thermal energy using the signal from a flow sensor installed in a closed pipe system
  • Communicates via a single two-wire bus
  • Compact cast epoxy body

Specifications

Brand

Flow Sensor Input - All Sensors

  • Separate Excitation Voltage is provided for Three-Wire Sensors 7.9…11.4 VDC with 270 Ω Source Impedance

Pulse Type Sensors - Signal Amplitude

  • 2.5 VDC Threshold

Pulse Type Sensors - Signal Limits

  • Vin < 35 V (DC or AC peak)

Pulse Type Sensors - Frequency Range

  • 0…10 kHz

Pulse Type Sensors - Pull-up

  • Up to 9.1 VDC @ 2 kΩ

Sine Wave Sensors - Signal Amplitude

  • 10 mV p-p Threshold

Sine Wave Sensors - Signal Limits

  • Vin < 35 V (DC or AC peak)

Sine Wave Sensors - Frequency

  • 0…10 kHz

Power Supply Options

  • 12 to 24 VAC | 12 to 24 VDC

Power - Current Draw

  • 60 mA at 12 VDC

Temperature Sensor Input

  • Two required: 10 kΩ Thermistor, 2 Wire, Type II, 10 kΩ at 250°C

Temperature

  • Operating: -20...158 °F (-25...70 °C)
  • Storage: –40…185 °F (-40...85 °C)

Weight

  • 4.8 oz with Headers Installed

Sensor Calibration

  • Data Industrial: Use K and Offset Values provided in Sensor Owners Manual
  • Other Sensors: Check with Factory

Measurement Outputs

  • Transmitted in SI Units

Flow

  • Rate and Total

Energy

  • Rate and Total

Programming

  • Requires PC or Laptop running Windows® 7, XP or Vista and A301-20 Programming Kit

Accessories

  • A301-20 Programming Kit

  • Building Design, HVAC & Plumbing
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