Valcom Sanitary Digital Differential Pressure Transmitter VSD4 series

VSD4 Can be specified within the range of 50 kPa to 1000 kPa of rated capacity. It's suitable combine with batch control/PID Controller which needs a pulse output of 4-20mA

  • Determines differential pressure by computing the outputs from two pressure sensors.
  • Output 4-20mA (2-wire system) scaling function.
  • Chooses from One output (Only the output of difference pressure) and Two output (The output of difference pressure + The Output of the low-pressure side)
  • Pressure port with higher strength.
  • Safe and reliable construction with no sealed liquid.
Standard functions :
  • Display switch (Differential pressure, High pressure, Low pressure)
  • Damping
  • Loop check function
  • FIX zero
  • Zero shift
  • Maximum/Minimum monitoring function
  • Setting output status at error
  • Key lock function

Specification :


7 segment 4-digit LCD display Character height: Approx. 12.7mm
Display range Approx. 3.5 times/sec.

Accuracy at room temperature(*1)
(Including Nonlinearity, Hysteresis, and repeatability)

Differential pressure

Scaling in 20–100%R.C.: ±0.7%F.S.±1digit.
Scaling in 10–20%R.C.: ±1.4%F.S.±1digit.

Low pressure

2 output

Scaling in 20–100%R.C.: ±0.5%F.S.±1digit.
Scaling in 10–20%R.C.: ±1%F.S.±1digit.

1 output
(Without analog output)


High pressure
analog output)


Temperature compensation range (Sensor assembly)

-5–150°C (Measurement pressure medium)

Safe temperature range (Sensor assembly)

-5–150°C (Measurement pressure medium)

Temperature effect on zero balance

±0.6%R.C./10°C or less (Rated 300kPa, 500kPa, 1000kPa)
±0.7%R.C./10°C or less (Rated 50kPa, 100kPa, 200kPa)

Temperature effect on load

±0.6%R.C./10°C or less (Rated 300kPa, 500kPa, 1000kPa)
±0.7%R.C./10°C or less (Rated 50kPa, 100kPa, 200kPa)

Ambient temperature and humidity range

0–50°C (No condensation or freezing)


Case part: Aluminum die casting,
Front sheet part: PET
Radiating fin and adapter part: SUS304

IP Rating

Equivalent to IP67


Approx. 670g


Operating manual 1 copy, Test report 1 copy, Cable gland
Brackets for the exclusive use of the PP type
U character bolt for brackets for the exclusive use of the PP type.
Hexagon nut for PP-type fixation

  • (*1)For the ferrule type, zero adjustments is to be made after the clamp is tightened.

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