Transducers enable true RMS voltage and current measurement.

Press Release Summary:




Single-phase, RoHS-compliant MVTR and MCTR series are respectively used for measuring true RMS voltage and true RMS current in diverse industrial environments. Supplied in 35 mm DIN rail enclosure, products impart fully isolated, 4-20 mA output proportional to related input voltage or current for sinusoidal and non-sinusoidal inputs found among variable frequency applications. Instrument power is supplied via control industry standard 4-20 mA loop power to facilitate installation.



Original Press Release:



Ohio Semitronics Announces the MVTR and MCTR Transducer Series for Accurate, Economical and True RMS Voltage and Current Measurement



Hilliard, Ohio - Ohio Semitronics, Inc. (OSI), the leader in the manufacture of electrical sensors and transducers for industrial and military applications, announced the MVTR and MCTR series of single-phase, RoHS compliant transducers for the measurement of voltage and current in applications requiring a true RMS calculation of the transducer input.

"Specifically designed to provide a cost-effective, yet accurate solution that also reliably measures true RMS voltage and current in range of industrial environments, MVTR and MCTR transducers uniquely combine desirable electrical transducer performance features all in one compact 35mm DIN rail enclosure at a competitive price," explained Bill Hogue, Vice-President of Sales and Marketing at OSI.

The MVTR units measure true RMS voltage, while the MCTR models measure true RMS current. All MVTR and MCTR models impart a fully isolated 4-20mA output proportional to the related input voltage and current, respectively, for the sinusoidal and non-sinusoidal inputs found commonly among variable frequency applications. Instrument power is supplied via a control industry standard 4-20mA loop power to facilitate easy and low-cost installation.

Model MVTR Specification Highlights include:
· True RMS voltage measurement
· Output scaling 0-F.S. input = 4-20mAdc output
· Three full-scale voltage range inputs supported including 150, 300 and 600Vac
- Model MVTR-150E2: 0-150 input AC voltage, 4-20mAdc output
- Model MVTR-300E2: 0-300 input AC voltage, 4-20mAdc output
- Model MVTR-600E2: 0-600 input AC voltage, 4-20mAdc output, supplied with a potential transformer (PT)
· 200ms response time in 150V and 300V models, 500ms in the 600V model
· 50-400Hz frequency range
· ±0.5% F.S. accuracy at 60Hz, ±1% F.S. accuracy at 400Hz
· -20°C to +60°C operating temperature range

Model MCTR Specification Highlights include:
· True RMS current measurement
· Output scaling 0-F.S. input = 4-20mAdc output
· Four input ranges (0-0.1A, 0-1A, 0-5A and 0.333V)
- Model MCTR-0.100E2: 0-0.1A input AC current, 4-20mAdc output
- Model MCTR-001E2: 0-1A input AC current, 4-20mAdc output
- Model MCTR-005E2: 0-5A input AC current, 4-20mAdc output
- Model MCTR-0.100E2: 0-0.333V input AC current, 4-20mAdc output, motor requires isolation through the current transformers (CTs)
· 50-400Hz frequency range, 300ms response time
· ±0.5% F.S. accuracy at 60Hz, ±1% F.S. accuracy at 400Hz
· -20°C to +60°C operating temperature range

Ohio Semitronics, Inc.
Electronics manufacturers, industrial OEMs, energy providers, utilities and the military look to Ohio Semitronics for cost-efficient power measurement systems and solutions. Since 1964, Ohio Semitronics has manufactured custom electrical transducers for critical applications. Today, we provide more application-specific transducers, modified standard and custom, than any other single source for power and energy measurement components. Through a network of authorized independent representatives, backed by highly trained, factory based sales engineers, Ohio Semitronics offers more than 8,000 catalog-standard electrical current sensors, transducers, transformers and power and energy measuring equipment items to meet industrial requirements for voltage, current, power (Watts), energy (Watt/Hours), frequency, phase angle, power factor VA and VARs, VAR hours, multifunction, Hall-effect probes, and power and energy meters.

For more information, contact Bill Hogue at Ohio Semitronics, Inc. at whogue@ohiosemitronics.com or phone (614) 777-1005. The Ohio Semitronics Web site is found at www.ohiosemitronics.com.

Agency contact: Sally Stevens, Executive Vice President, Stevens Strategic Communications, Inc. Phone (440) 617-0100 ext. 202, E-mail sstevens@stevensstrategic.com

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