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Meter Pulse-to-Analog Transducer MPA-2

Meter Pulse-to-Analog Transducer


The Model MPA-2 meter pulse-to-analog transducer accepts kWh totalizer pulses from a utility meter and calculates kW demand using a 5, 15, or 30-minute sliding window averaging scheme. The average kW demand value is provided as a milliamp or voltage signal, which can be read by a BAS. The average kW demand can also be displayed using panel meter indicators such as the LPI Series.


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  • Converts kWh pulses to an analog kW signal
  • Both milliamp and VDC signals available
  • 5, 15, or 30-minute sliding window selection
  • 24 VAC/VDC power
  • Adjustable zero and span
  • Snap track-mounted
  • Furnished with complete instructions

Supply Voltage:24 VAC ±10% or 24 VDC ±10%

Supply Current:

 : 120 mA maximum @ 24 VAC

 :50 mA Maximum @ 24 VDC

Dip Switches:Sliding window size is DIP switch-selectable for 5-, 15-, or 30-minute periods; kWh pulses to produce full-scale output are DIP switch selectable from 10 pulses per period to 18,000 pulses per period

Input Signal:24 VAC/VDC switched through electronic or mechanical contact closure

 :Input Current 15 mA non-inductive at 24V

 :Max Pulse Rate 10 pulses/seconds

Output Signal:4-20 mA factory set, adjustable 0-20 mA zero and span; 2-10 VDC factory set, adjustable 0-18 VDC (both outputs can be used simultaneously)

Output Impedance:Maximum output resistance 650Ω for mA output; maximum current available from voltage and current outputs combined is 25 mA

LED Indication:

 :Green status LED (L2)

 :Steady green = normal

 :Slow flashing green = calibration mode

 :Rapid flashing green = kW demand overflow

 :Red signal LED (L1) = contact closure on the utility meter kWh contacts (LED is off when contacts open)

 :Note: L3 and L4 stay ON during operation

Mounting:3.25" (8.3 cm) snap track (supplied with unit)

Dimensions:3.25"H x 4.6"W x 1"D

(8.3 x 11.7 x 2.54 cm):

Weight:0.39 lb (0.17 kg)

Warranty:18 months


Download Additional Data

document   MPA-2 Catalog Page
document   MPA-2 Installation Sheet