Brand: SENS4

Product Code: VSM-1

Availability:Out of stock

Programmable precision vacuum pressure transducer with steel diaphragm sensor

VSM-1 Vacuum pressure transducer

  • Measurement range 0.1 to 1,333 mbar (0.1 to 1,000 Torr)
  • All-welded diaphragm vacuum pressure sensor
  • 4-20 mA, 0-10 VDC and setpoint switch output
  • Programmable settings, range and configuration via S4-Connect™
  • Compact and robust 316 stainless steel design


  • All-welded corrosion resistant stainless steel diaphragm
  • Temperature drift compensated
  • Configurable with plug and play USB communicator
  • Robust ultra compact 316 stainless steel design
  • IP67 enclosure for harsh environments
  • Optional solid-state setpoint relay for process control

The VSM-1 series vacuum transmitter is designed for measurement in a variety of industrial applications.  Its modular compact design offers a unique combination of high measurement performance, flexible configuration and a robust stainless steel design. Applications include vacuum fore-line surveillance, freeze-drying and heat treatment furnaces. The VSM-1 is programmable and configurable from a PC via the novel S4-Connect interface.


Diaphragm sensor technology

he VSM-1 transducer is based on a 316 stainless steel sensor diaphragm that converts the applied pressure to an electric signal. The ceramic sensor surface in combination with the 316 stainless steel flange and internal Viton® sealing offers excellent chemical resistance and compatibility with a wide range of aggressive gases, solvents and acids. The VSM-1 sensor is built to last and can withstand continuous vibrations and instant pressure changes from vacuum to atmosphere.

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Measuring range 0.1 to 1,300 mbar  (0.1 to 1,000 mbar)
Measuring principle Stainless steel membrane absolute or gauge
Accuracy 0.75 % of reading
Thermal drift (offset) +/- 0.15% of full-scale
Output signal (Voltage version) 0-10 VDC (Programmable scaling by S4-Connect™)
Output resolution (Voltage version) 16 bit / 150 nV
Output signal (Current version) 4-20 mA(1) (Programmable scaling by S4-Connect™)
Output resolution (Current version) 16 bit / 244 nA
Solid state relay contact rating (optional) 250 mA, 50 VDC / VAC peak

Environment conditions

Operating ambient temperature -40 to +100 °C (-40 to +212 °F)
Media temperature -50 to +150 °C (-58 to 302 °F)
Storage ambient temperature -40 to +125 °C  (-40 to +257 °F)
Maximum media pressure 2000 mbar
Burst media pressure 3000 mbar
Mounting position Any
Protection rating, EN 60529/A2:2013 IP67 (2), IP65 (3)
Humidity, IEC 68-2-38 98%, non-condensing

Power supply

Supply voltage  12-30 VDC
Power consumption (Voltage version) 240 mW (Max)
Power consumption (Current version) 600 mW (Max)
Reverse polarity protection Yes
Overvoltage protection Yes
Internal fuse 100 mA (Thermal recoverable)


Enclosure SS 1.4404 / AISI 316
Electrical connector DIN 175301-803A PA Nylon
Electrical connector M12 IEC 61076-2-101 PA Nylon, Nickel plated Zinc alloy
Process connection SS 1.4404 / AISI 316L
Process leak tightness (ISO 27895:2009) <1·10-9 mbar·l/sec.


CE EN61000-6-2, EN 61000-6-3Pressure directive 97/23/CE
RoHS compliance

Directive EU 2015/863


  1. 4-20 mA NAMUR NE43 compliant signal.
  2. IP67 for product versions with IEC 61076-2-101 M12 connector.
  3. IP65 for product versions with DIN EN 175301-803 A connector.