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Request a quote
Contact a Customer Care Representative

We’ll get back to you within 24 hours or the following business day.

Prefer to call?
Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

For sales & general inquiries
Municipal Water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010
Wyco Concrete solutions: (800) 233-9926

For product support
Municipal Water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010
Wyco Concrete solutions: (877) 243–1010

Type 340 LW-LonWorks® BTU Transmitter

Type 340 LW-LonWorks® BTU Transmitter

Type 340 LW-LonWorks® BTU Transmitter

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

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  • Temperature Range
    -29...70 °C
    -20...158 °F
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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.

  • 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

Download CSI Specifications
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  • Flow Sensor Input - All Sensors
    Separate excitation voltage is provided for three-wire sensors 7.9…11.4V DC with 270 Ω source impedance
    Separate excitation voltage is provided for three-wire sensors 7.9…11.4V DC with 270 Ω source impedance
  • Pulse Type Sensors - Signal Amplitude
    2.5V DC threshold
    2.5V DC threshold
  • Pulse Type Sensors - Signal Limits
    Vin < 35V (DC or AC peak)
    Vin < 35V (DC or AC peak)
  • Pulse Type Sensors - Frequency Range
    0…10 kHz
    0…10 kHz
  • Pulse Type Sensors - Pull-up
    To 9.1V DC with 2k Ω
    To 9.1V DC with 2k Ω
  • Sine Wave Sensors - Signal Amplitude
    10 mV p-p threshold
    10 mV p-p threshold
  • Sine Wave Sensors - Signal Limits
    Vin < 35V (DC or AC peak)
    Vin < 35V (DC or AC peak)
  • Sine Wave Sensors - Frequency
    0…10 kHz
    0…10 kHz
  • Power Supply Options
    12 to 24V DC |12 to 24V AC
    12 to 24V DC |12 to 24V AC
  • Power - Current Draw
    60 mA at 12V DC
    60 mA at 12V DC
  • Temperature Sensor Input
    Two required: 10k Ω thermistor, 2 wire, type II, 10k Ω at 250C
    Two required: 10k Ω thermistor, 2 wire, type II, 10k Ω at 250C
  • Temperature
    Operating: -20…70 °C
    Storage: -40…85 °C 
    Operating: -20…158 °F
    Storage: -40…185 °F
  • Weight
    4.8 oz with headers installed
    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
    Data Industrial: Use K and offset values provided in sensor owners manual
    Other Sensors: Check with factory
  • Measurement Outputs
    Transmitted in SI units
    Transmitted in SI units
  • Flow
    Rate and total
    Rate and total
  • Energy
    Rate and total
    Rate and total
  • Programming
    Requires PC or laptop running Windows® 7, XP or Vista and A301-20 programming kit
    Requires PC or laptop running Windows® 7, XP or Vista and A301-20 programming kit
  • Accessories
    A301-20 programming kit
    A301-20 programming kit
    •
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Market Applications

  • Building Design, HVAC & Plumbing

    Flow instrumentation solutions are a crucial aspect of building design, construction and operation for apartments, hospitals, schools, factories and other facilities. From HVAC and grounds management to plumbing and water services, our flow meters are specifically designed to provide solutions that are accurate and reliable, even under the most challenging conditions.

    View Solutions
    APPLICATION EXAMPLES

    Turf Irrigation | Municipal/Agricultural Irrigation

Product Documentation

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Specifications | English Impeller Model 340LW Btu Transmitter with LonWorks

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Software | Updated August 19, 2020 | 1 KB Impeller 340LW Series LonWorks - LonMark Device Interface file (XIF) Impeller See Release Notes
Software | Updated August 19, 2020 | 1 KB Impeller 340LW Series LonWorks - LonMark Device Interface file (XIF) Impeller See Release Notes

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Parts & Accessories

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Contact a Customer Care Representative

We’ll get back to you within 24 hours or the following business day.

Prefer to call?
Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

For sales & general inquiries
Municipal Water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010
Wyco Concrete solutions: (800) 233-9926

For product support
Municipal Water solutions: (800) 616–3837
Commercial & Industrial solutions: (877) 243–1010
Wyco Concrete solutions: (877) 243–1010

Badger Meter is an industry-leading innovator in flow measurement, water quality and control products, serving water utilities, municipalities and commercial and industrial customers worldwide.

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