Specialized manufacturer of Digital Pressure Meters and Load Cells


Discontinued Successor model: VRSRVHR3(G3)VAR3(G3)VPNPR(G)

Low Pressure Transmitter
VSR3(G3) series

  • Measures the low pressures (50 to 350 kPa) with high accuracy.(Nonlinearity: ±0.5%R.C.)
  • Abundant analog output available.
    [4–20mA (2 wire system, 4 wire system), 1–5V,0–5V,0–10V]
  • For the cable connection to the sensor, "pigtail", "standard connector", "waterproof connector" and "terminal box" are available.
Measured medium Dedicated to inert gases (noncorrosive gases) such as air, nitrogen, argon, etc.
Pressure Type Positive, compound and negative pressures can be measured.
Contact VALCOM for the measurement of absolute pressure.
Measured Range Can be specified within the range of 5 kPa to 350 kPa of rated capacity (Calibration: 2.5 to 350kPa).
Specify more than 50% of rated capacity as the calibration range.
Output type 4–20mA (2 wire system, 4 wire system),
Specify among 4 to 20 mA (2-wire, 4-wire), 1 to 5 V, 0 to 5 V, and 0 to 10 V.


Non Linearity ±0.5%R.C.
Hysteresis ±0.5%R.C.
Compensated Temperature Range (Temperature of medium to be measured) 0–70°C (No condensation or freezing)
Safe Temperature Range (Temperature of medium to be measured) −20–85°C (No condensation or freezing)
Temperature Effect on Zero Balance ±0.5%R.C./10°C
Temperature Effect on Load ±0.5%R.C./10°C
Safe Overload Rating 200%R.C.
Ultimate Overload Rating 300%R.C.
Insulation Resistance 50MΩ or more (DC50V)
Pressure Port Material Aluminum 2017 (Pressure port: Semiconductor)
Connection Screw Selectable: R3/8 or G3/8
Fastening Torque;Recommended 20N·m
Fastening Torque;Maximum 30N·m
Power supply 4 DC24V (±10%), 5 DC12V (±10%)
*Only 24V DC available when analog output is A5
Cable 4-core shielded (oilproof) cable 2m (Standard) φ6mm(*1)
Weight Approx. 150g (Cable not included)
Accessories Operating manual 1 copy (Specify English or Japanese.)
Test report 1 copy
  • (*1)Waterproof terminal box type does not come with cable.

Model Selection


Selection Check Model Specifications
1.Model   VSR3 Silicon diaphragm type Minute/Low Pressure Transmitter
*Connection screw: R3/8
  VSG3 Silicon diaphragm type Minute/Low Pressure Transmitter
*Connection screw: G3/8
2.Analog output

A6 available for waterproof terminal box type
- - Output type Response frequency Safe load resistance Power Consumption
  A2 1–5V 1kHz 5kΩ or more Approx. 23mA
  A3 4–20mA
333Hz DC24V:500Ω or less/
DC12V: 250Ω or less
Approx. 40mA
  A4 0–5V 1kHz 5kΩ or more Approx. 23mA
  A5 0–10V 1kHz 5kΩ or more Approx. 23mA
  A6 4–20mA
1kHz DC24V:500Ω or less/
DC12V:150Ω or less
3.Calibration - - Rated capacity Example of calibration range
  See right table. Enter the range in the
  as it is.
5kPa 5kPa
50kPa 50kPa
200kPa 200kPa
350kPa 350kPa
4.Cable Connection   Blank Standard connector Equivalent to IP40
  W Waterproof connector Equivalent to IP56
  S Pigtail Equivalent to IP54
  T Waterproof terminal box type Equivalent to IP55
*Applicable only when analog output is A6. Cable not included
5.Power supply   4 DC24V (±10%)
  5 DC12V (±10%)*Not available when analog output is A5
6.Length (Cable)   2m 2m Standard
  3m 3m
  5m 5m
  10m 10m
  □□m Other length
*Contact our sales office for other cable lengths.

External dimensions (Unit: mm)

*Refer to line connection here

External dimensions

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