Compare Model Drawings, CAD & Specs Full Scale Range Fitting Type Availability Price
Absolute Pressure Transducer, 10 Torr, 8 VCR, Bakeable, Remote Electronics
$2,150
3 Weeks
121AA-00010B Absolute Pressure Transducer, 10 Torr, 8 VCR, Bakeable, Remote Electronics 10 Torr 8 VCR female
3 Weeks
$2,150
Absolute Pressure Transducer, 100 Torr, NW16 ISO-KF, Bakeable, Remote Electronics
$2,150
3 Weeks
121AA-00100D Absolute Pressure Transducer, 100 Torr, NW16 ISO-KF, Bakeable, Remote Electronics 100 Torr NW16 ISO-KF
3 Weeks
$2,150
Absolute Pressure Transducer, 10000 Torr, 8 VCR, Bakeable, Remote Electronics
$2,450
3 Weeks
121AA-10000B Absolute Pressure Transducer, 10000 Torr, 8 VCR, Bakeable, Remote Electronics 10000 Torr 8 VCR female
3 Weeks
$2,450

Product Options

Description
  121A Absolute Pressure Transducer, 1-25,000 Torr, Bakeable, Remote Electronics

Specifications

  • Type
    Pressure Transducer
  • Sensor Type
    Industrial Capacitance Manometer
  • Measurement Type
    Absolute
  • Full Scale Pressure Ranges
    1, 2, 10, 100, 1000, 5000, 10000, 15000, 20000, and 25000 Torr
  • Accuracy
    0.5% of Reading (± temperature coefficients)
  • Resolution
    0.01% of Full Scale
  • Analog Output
    0 to 10 VDC into >10k Ω
  • Electrical Connector
    14-pin Micro
  • Zero Temperature Coefficient
    0.02% Full Scale/°C
  • Span Temperature Coefficient
    0.04% of Reading
  • Volume
    7.0 cc
  • Overpressure Limit
    120% of Sensor Full Scale or 35 psia whichever is greater
  • Power Requirements
    ±15 VDC @ 35mA regulated to ±5%
  • Compliance
    Compliant to EMC Directive 2014/30/EU when used with an overall metal braided shielded cable properly grounded at both ends

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.

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.

0 to 10 VDC Proportional Analog Output

These Baratron® capacitance manometers feature a high-level 0-10 VDC analog output signal that is linear with pressure. This analog output can be interfaced with an MKS pressure controller, an MKS power supply/display instrument, or any instrument that meets these requirements.

High Temperature Sensor with Remote Electronics

The pressure sensor and electronics of these capacitance manometers are separated by an eight foot cable, which allows the electronics to be mounted away from sources of heat. Remote electronics allow the sensor to operate at ambient temperatures up to 150°C.  The sensir is also bakeable to 200°C with the cable removed.

14-pin Micro Connector Pin-Outs

Pin Description
1 Chassis Ground
2 DC Common
3 No Connection
4 No Connection
5 +15 VDC
6 -15 VDC
7 Pressure Output
8 Chassis Ground
9 DC Common
10-14 No Connection

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