Ohio Semitronics - AC Voltage Transducers-Calibrated for RMS

Product Families

Electrical Current Measurements

Electrical Voltage Measurements

Electrical Power and Energy Measurements

Electrical Frequency Measurements

Multifunction Electrical Measuring Devices

4242 Reynolds Dr.
Hilliard, OH 43026

Phone:
(800) 537-6732
or (614) 777-1005
Fax: (614) 777-4511

Electrical Voltage Measurements
AC Voltage Transducers-Calibrated for RMS

Voltage is the force that causes free electrons to move in a conductor as an electric current. When a difference in potential exists between two charged bodies that are connected by a conductor, electrons will flow from the negatively charged body to the positively charged body until the two charges are equalized and the potential difference no longer exists.

Other Voltage Measurement Technologies

AC Voltage Transducers -
Calibrated for RMS

AC Voltage Transducers - True RMS

Most of the AC voltage transducers manufactured by Ohio Semitronics, Inc. measure the average of the absolute value of the voltage. The output of the transducer is then calibrated for the RMS (root mean square or heating value) for a sine wave input voltage. This type of transducer provides an accurate and relatively inexpensive method of deriving a DC signal output proportional to the AC voltage input. Conversely, this design can provide erroneous results when the voltage frequency contains harmonic distortion.

Typical OSI transducers that measure the average of the absolute value of the voltage and then calculate the RMS for a sine wave input include the following models:

AVT

Features

Single phase, UL, CUL and CE-listed

Typical Applications

50/60 Hz single phase where low cost is primary consideration and installation requires UL/CUL or CE listed. Common installations include:

Line voltage monitoring/verification
Voltage presence detection

Input Range	Std.Outputs	Accuracy
0-600Vac See spec sheet for individual model numbers and complete product specifications	0-1mAdc 4-20mAdc 0-10Vdc 0-5Vdc	±0.25% FS @ 60Hz

3AVT

Features

Three phase, UL, CUL and CE-listed

Typical Applications

50/60 Hz single phase where low cost is primary consideration and installation requires UL/CUL or CE listed. Common installations include:

Line voltage monitoring/verification
Voltage presence detection

Input Range	Std.Outputs	Accuracy
0-600Vac See spec sheet for individual model numbers and complete product specifications	0-1mAdc 4-20mAdc 0-10Vdc 0-5Vdc	±0.25% FS @ 60Hz

MVT

Features

Single phase, UL, CUL and CE-listed. All 600V models and the 300V 4-20mA unit are not included in UL listing.

DIN rail mounted.

Typical Applications

50/60 Hz single phase where low cost is primary consideration and installation requires UL/CUL or CE listed. Common installations include:

Line voltage monitoring/verification
Voltage presence detection

Input Range

Std.Outputs

Accuracy

0-600Vac
See spec sheet for individual model numbers and complete product specifications

0-1mAdc
4-20mAdc
0-10Vdc
0-5Vdc

Self-powered models from measured AC line input include DIP switches for either
0-5Vdc or 0-10Vdc output

±0.25% FS @ 60Hz

DVT

Features

Single phase, CSA & CE-listed

DIN rail mounted.

Typical Applications

50/60 Hz single phase. Typical applications include SCADA, process control and OEM where a small package is required.

Input Range	Std.Outputs	Accuracy
0-600Vac See spec sheet for individual model numbers and complete product specifications	0-1mAdc 4-20mAdc 0-10Vdc 0-5Vdc	±0.25% FS @ 60Hz.

3VTR

Features

Three phase. Input frequency range is 48-420 Hz.

Typical Applications

Designed for applications where the measurement of non-sinusoidal waveforms is required. May also be used to monitor three single phase circuits where panel mounting space is limited. Common applications include:

Noisy line voltage monitoring
Synthesized voltage waveforms from inverted and SCR controllers

Input Range	Std.Outputs	Accuracy
0-600Vac See spec sheet for individual model numbers and complete product specifications	0-1mAdc 4-20mAdc 0-10Vdc 0-5Vdc	±0.25% FS @ 60Hz, and ±0.5% over the specified frequency range.