VT7 DC Voltage Transducer
OSI DC VOLTAGE TRANSDUCER
MODEL
VT7-
DC TO 10KHZ FREQUENCY RANGE
DESCRIPTION
FEATURES
The model VT7 dc voltage transducer provides an output
directly proportional to the input. It functions as a milliVolt
shunt or high-voltage isolator.
This unit is primarily intended to measure and isolate
dc voltages, but may also be used to monitor ac and
non-sinusoidal waveforms. The output signal is a scaled
replica of the input (ac input = ac output, etc.). For ac or
bidirectional dc applications, a model with bidirectional
output type must be used.
A wide variety of standard input ranges and output types
are available. Consult factory for special ranges.
• dc voltage measurement
• 2500Vac dielectric test
• Wide frequency range
APPLICATIONS
• Accurate measurement and isolation
of dc voltages.
• Shunt isolator
5 YEA R
NT Y
WARRA
MODEL SELECTION
*INPUT
(mV)
*0 - 50
*0 - 100
*0 - 200
*0 - 250
INPUT
(Volts)
0 - 10
0 - 25
0 - 50
0 - 100
0 - 150
0 - 250
0 - 300
0 - 400
0 - 500
0 - 600
**0 - 700
**0 - 800
**0 - 900
**0 - 1000
Instrument Power Options
STANDARD OUTPUTS MODEL VT70-±1mA
4-20mA
0-±10V
0-±5V
015B
015E
015D
015X5
016B
016E
016D
016X5
017B
017E
017D
017X5
018B
018E
018D
018X5
STANDARD OUTPUTS MODEL VT70-±1mA
001B
002B
003B
004B
005B
006B
007B
008B
009B
010B
011B
012B
013B
014B
4-20mA
001E
002E
003E
004E
005E
006E
007E
008E
009E
010E
011E
012E
013E
014E
0-±10V
001D
002D
003D
004D
005D
006D
007D
008D
009D
010D
011D
012D
013D
014D
0-±5V
001X5
002X5
003X5
004X5
005X5
006X5
007X5
008X5
009X5
010X5
011X5
012X5
013X5
014X5
Option “-11” .............................. 115Vac ±15%, 50/60Hz, 5VA
Option “-22” ............................. 230Vac ±15%, 50/60Hz, 5VA
Options “-12”, “-15”, “-24”, “-28”, “-37”, “-48”.........................
12Vdc thru 48Vdc, ±10%, 150mA max.
Standard models contain a universal switching power supply.
“-11” & “-22” models utilize a linear power supply.
ORDERING INFORMATION
Example: 0-50mVdc Input with
4-20mAdc Output and
125Vdc Instrument Power
VT7-015E
* Shunt inputs
** Supplied with external divider box.
SPECIFICATIONS
INPUT
OUTPUT
Voltage ............................................................... (See Table)
Frequency Range ................................................. dc-10kHz
Overload
0.05-600V models ...........2XF.S. or 600Vac/850Vdc max.
700V-1000V models (w/external divider box) ...... 1.25XF.S.
Burden ..................................................................... >100kΩ
DIELECTRIC TEST
Input/Output/Case ...................................................2500Vac
INSTRUMENT POWER
Standard ...85-265Vac, 48-420Hz, 5VA or 110-370Vdc, 5VA
“-11” option .............................. 115Vac ±15%, 50/60Hz, 5VA
“-22” option..............................230Vac ±15%, 50/60Hz, 5VA
“-12”, “-15”, “-24” options ....12, 15, or 24Vdc ±10%, 150mA max.
“-28”, “-37”, “-48” options ....28, 37, or 48Vdc ±10%, 150mA max.
Type ................................................................... (See Table)
Response ................... (to 90%) ....................................50μs
Loading
“B” models .............. (0-1mA) ................................. 0-10kΩ
“D”, “X5” models ..... (0-10, 0-5V) .............................. >2kΩ
“E” models .............. (4-20mA) ...............................0-500Ω
Field Adjustable Cal. ................................................... ±10%
ACCURACY
Includes effects of linearity, setpoint and repeatability.
All Models ............................................... ±0.25% F.S.@ DC
TEMPERATURE
Operating Range.............................................-10ºC to 60ºC
Effect ............................................... ±1.0% Rdg., ±0.1%F.S.
OHIO SEMITRONICS, INC.
VT7 Rev F.indd
Page 1 of 2
4242 REYNOLDS DRIVE * HILLIARD, OHIO * 43026-1264
PHONE: (614) 777-1005 * FAX: (614) 777-4511
WWW.OHIOSEMITRONICS.COM * 1-800-537-6732
7/19/16
OSI CONNECTIONS & CASE DIMENSIONS
MODEL
VT7-
CONNECTION DIAGRAMS
SHUNT ISOLATOR
50mV - 250mV MODELS
10V - 600V MODELS
700V - 1000V MODELS
Dwg# 0902-00847-B Rev B
Note: All models above 600V input require a divider box in series with the input terminal #2.
Do not connect the input voltage directly! Damage to the VT7 will result if not properly connected.
CASE DIMENSIONS
MODEL VT7 & VT8
DIVIDER BOX
All dimensions in inches
OHIO SEMITRONICS, INC.
VT7 Rev F.indd
Page 2 of 2
Dwg# 0902-00847-B Rev B
4242 REYNOLDS DRIVE * HILLIARD, OHIO * 43026-1264
PHONE: (614) 777-1005 * FAX: (614) 777-4511
WWW.OHIOSEMITRONICS.COM * 1-800-537-6732
7/19/16
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