Compare Model Drawings, CAD & Specs Full Scale Range Fitting Type Availability Price
Differential Capacitance Manometer, 1 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C
$2,300
3 Weeks
220DD-00001A2B Differential Capacitance Manometer, 1 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C 1 Torr 0.5 in. OD tube
3 Weeks
$2,300
Differential Capacitance Manometer, 1 Torr, 8 VCR Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00001B2B Differential Capacitance Manometer, 1 Torr, 8 VCR Fitting, NEMA1, 45 C 1 Torr 8 VCR female
3 Weeks
$2,475
Differential Capacitance Manometer, 1 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00001D2B Differential Capacitance Manometer, 1 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C 1 Torr NW16 ISO-KF
3 Weeks
$2,475
Differential Capacitance Manometer, 10 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C
$2,300
3 Weeks
220DD-00010A2B Differential Capacitance Manometer, 10 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C 10 Torr 0.5 in. OD tube
3 Weeks
$2,300
Differential Capacitance Manometer, 10 Torr, 8 VCR Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00010B2B Differential Capacitance Manometer, 10 Torr, 8 VCR Fitting, NEMA1, 45 C 10 Torr 8 VCR female
3 Weeks
$2,475
Differential Capacitance Manometer, 10 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00010D2B Differential Capacitance Manometer, 10 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C 10 Torr NW16 ISO-KF
3 Weeks
$2,475
Differential Capacitance Manometer, 100 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C
$2,300
3 Weeks
220DD-00100A2B Differential Capacitance Manometer, 100 Torr, 0.5 in. Tube Fitting, NEMA1, 45 C 100 Torr 0.5 in. OD tube
3 Weeks
$2,300
Differential Capacitance Manometer, 100 Torr, 8 VCR Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00100B2B Differential Capacitance Manometer, 100 Torr, 8 VCR Fitting, NEMA1, 45 C 100 Torr 8 VCR female
3 Weeks
$2,475
Differential Capacitance Manometer, 100 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C
$2,475
3 Weeks
220DD-00100D2B Differential Capacitance Manometer, 100 Torr, NW16 ISO-KF Fitting, NEMA1, 45 C 100 Torr NW16 ISO-KF
3 Weeks
$2,475

Product Options

Description
  220DD Differential Capacitance Manometer, 0.1-1000 Torr, NEMA1, Heated to 45°C

Specifications

  • Full Scale Pressure Ranges
    1, 10, 100, 1000, 5000, 10000, 15000, 20000, 25000 Torr
  • Sensor Temperature
    Controlled to 45°C
  • Accuracy
    ±0.15% of Reading (± temperature coefficients)
  • Resolution
    0.01% of Full Scale
  • Analog Output
    0 to 10 VDC into > 10K Ω load and 4 to 20 mA into <500 Ω load
  • Electrical Connector
    Mating connector P/N MS306A-14S-6S; MKS Connector Kit 220C-AC-K1
  • Zero Temperature Coefficient
    0.008% of Full Scale/°C for 1 Torr
    0.005% of Full Scale/°C > 1 Torr
  • Span Temperature Coefficient
    0.02% of Reading/°C
  • Volume
    Measurement Side (Px): 7.0 cc
    Reference Side (Pr): 19.0 cc
  • Overpressure Limit
    120% of Full Scale or 20 psi (140 kPa), whichever is greater For Full Scale ranges less than 1000 Torr
  • Power Requirements
    115/230 VAC, 50/60 Hz
  • Enclosure Rating
    NEMA 1

Features

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 absolute 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.

Internally Heated to 45°C

These capacitance manometers are temperature controlled to 45°C for improved accuracy. Unheated versions are exposed to ambient temperature variations which can degrade the sensor accuracy. These devices have the sensor enclosed in a volume that is maintained at a constant temperature above ambient. This solution improves the manometer’s accuracy and repeatability and lowers instrument drift by reducing or eliminating process contamination within the manometer. Heated manometers are recommended for applications that require maximum accuracy and repeatability, operate above ambient temperature and for those processes that employ hot gases.

The pressure sensor is located inside a 45°C constant temperature oven for improved pressure measurement accuracy.

Differential Pressure Measurement

Differential capacitance manometers can be connected to any pressure or vacuum source for use as the reference pressure. These manometers read the difference in pressure between the inlet tube and the reference cavity at the backside of the electrode. Differential pressure transducers can be used to measure either the true differential pressure or vacuum between two locations, or the reference side of the product can be left open to provide a true reference to local atmospheric pressure. Applications include air and gas flow measurements for filters and analytical systems, downstream pressure control in thin film processing systems, and automated leak testing systems.

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.

0-10 VDC and 4-20 mA Pressure Outputs

These Baratron® capacitance manometers feature two simultaneous 0 to 10 VDC and 4 to 20 mA analog pressure outputs to interface with common process control systems.  The 0-10 VDC signal allows it to be used as a pressure transducer, while the 4-20 mA signal supports use as a pressure transmitter.

NEMA 1 Rated Enclosure

All pressure sensor components and electronics are housed in a rugged, NEMA 1 rated enclosure for protection when used in harsh industrial environments.

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