Compare Description Drawings, CAD & Specs Availability Price
430e baratron 1-25,000 torr nema4 absolute pressure transmitter
Vacuum Pressure Transmitter, Absolute, NEMA 4, 10 Torr, 4-20 mA, 0.25 in. NPT
430e baratron 1-25,000 torr nema4 absolute pressure transmitter
Vacuum Pressure Transmitter, Absolute, NEMA 4, 100 Torr, 4-20 mA, 0.25 in. NPT
430e baratron 1-25,000 torr nema4 absolute pressure transmitter
Absolute Pressure Transmitter, NEMA 4, 1000 Torr, 4-20 mA, 0.25 in. NPT

Configuration Options

430e baratron 1-25,000 torr nema4 absolute pressure transmitter 430E Absolute Vacuum Transmitter, 1-25,000 Torr, 4-20 mA Output, NEMA4 Housing


  • Type
    NEMA 4 Pressure Transmitter
  • Sensor Type
    Industrial Capacitance Manometer
  • Measurement Type
  • Full Scale Pressure Ranges
    1, 2, 10, 100, and 1000 Torr; 100, 200, 300, 400, and 500 psia
  • Fitting Type
    ¼ inch NPT
  • Accuracy
    ±0.50% of Reading
  • Analog Output
    Two-wire 4-20 mA
  • Analog Connector
    ½ inch conduit with screw terminals
  • Zero Temperature Coefficient
    0.020% Full Scale/°C
  • Span Temperature Coefficient
    0.040% Reading/°C
  • Volume
    7.0 cc
  • Overpressure Limit
    120% of FS, or 35 psia (240 kPa) - whichever is greater
  • Power Requirements
    24 to 32 VDC
  • Response Time
    With snubber: 250 msec
    Without snubber: 20 msec
  • Mounting Position
    Panel mount or pipe mount with U-bolt, process connection down
  • Zero Adjustment
    Continuously adjustable externally
  • Housing Materials
    356-T6 aluminum with 2-part polyurethane paint
  • Enclosure Rating
  • Weight
    6 lbs (3 kg)
  • Compliance
    Compliant to EMC Directive 2014/30/EU when used with an overall metal braided shielded cable, properly grounded at both ends. Explosion-proof: Class 1, Divisions 1 & 2, Groups C & D. Dust Ignition-Proof: Class II, Divisions 1 & 2, Groups E, F, & G. For use in: Class III, Divisions 1 & 2, NEMA 4 Enclosure


Baratron® Capacitance Manometer Technology

Capacitance manometers are electro-mechanical gauges that can measure both pressure and vacuum. The capacitance gauge translates a pressure-modulated movement in a thin diaphragm into an electrical signal proportional to the pressure. The pressure sensor is the thin diaphragm that is exposed to the pressure or vacuum being measured via the inlet tube. An electrode is mounted in the reference cavity behind the diaphragm. Pressure differences between the process and the reference cavity deflect the diaphragm slightly, changing the distance between it and the electrode. Variations in this distance produce variations in the capacitance between the diaphragm and the electrode creating an electrical signal that is proportional to the pressure change. Since differences in the capacitance signal are produced by physical changes within the manometer and not by changes in the gas properties, pressure measurements by the capacitance manometer are independent of the composition of the gas being measured.

Gas independent pressure measurement with a Baratron® capacitance manometer. Schematic shows the internal components and functional zones.

Percent of Reading Accuracy

Accuracy is specified as a percent of Reading, not Full Scale, as seen in some of the lower performance devices. Percent of Reading accuracy provides you with an even more accurate output signal in the lower scale of the pressure range, where it is needed most.

Explosion Proof Rated Enclosure

The 430e Baratron® absolute pressure transmitter features a NEMA 4 (FM17US0326) approved housing and flame snubber for use in applications requiring an explosion-proof or weather-proof transmitter. It is approved for Class I, Divisions 1 and 2, Groups C and D explosion-proof applications. The housing is made with 356-T6 aluminum (NEMA 4) and coated wirh 2-part polyurethane paint,

Absolute Pressure Measurement

These Baratron® pressure transducers are referenced to vacuum for absolute pressure measurement. Applications include: vacuum furnaces, freeze-drying of fruits and vegetables, gas lasers, automotive component testing, bottle coatings, and vacuum distillation.

All-Inconel® Wetted Surfaces

These pressure transducers feature all Inconel® construction of the pressure sensor allowing it to operate without damage in virtually any chemical environment, including exposure to halogens, deionized water and steam, and ozone.

4 to 20 mA Output Proportional to Pressure

These Baratron® capacitance manomaters feature a 2-wire linear 4 to 20 mA analog output that is proportional to absolute pressure.  4 mA indicates zero pressure with 20 mA indicating full scale pressure. 24 to 32 VDC power is required, and the 4-20 mA signal is into a 500 Ω load.

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