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Panel Meter. Lab Watthour Meter, Single Phase. The DI-503E Kilowatt hour meter is ready to install in a Laboratory. The DI50E meter with the IOW2 signal conditioner with a 5 digit accuracy of 0.1%.  DI-503E is a processor, not a counter, and comes complete with 1 solid core current transformer with a 1" window. On board meter memory holds data even after a power outage, with a large 0.56" display. Re-settable or continuous running for your convenience. DI50E Completely calibrated and configured for your single phase 2 or 3 wire system. Provide Amp service 100-200 400 amp etc. and the system voltage to complete the model number.  Includes 1 solid core CT 1" ID Window. 1ea.DI-50E-DP1-PS1-IOW2-(Amps)-(Volts)=$300.00ea. DI-50E Sheet    Be patient this is 60 pages in PDF Single Phase KWH, Volt, Amp Meter Complete Instantaneous system information for a single phase 2 or 3 wire system. Five digit, Triple Display measuring Volt, Amps, Kilowatt hours, Frequency, Watts, Kilowatts, Power Factor, load monitoring  up to 600 VAC. Completely configured  with 3 selectable of 3 primary displays. Provide amp service 100-200 or 400 amp etc. and the system voltage to complete the model number. Includes 1 solid core CT w/1"ID Window. Options include RS232 and RS485 Communications 1ea.DI-503E-DR3-PS1-IOW2 (amps)-(Volts) $400.00ea DI-503E Data     Be patient this is 60 pages in PDF Caution Serious injury can result from electrical shock.  Be sure to turn off the electrical power before installing any meter. Fire can result from loose electrical connections.  Ensure that all electrical connections are secure.  If you do not understand theses instructions hire an experienced electrician to install the meter for you.  Help is also available from the factory buy phone or email.  In most localities a permit and inspection is required to install the meters.