The R750C High-Pressure Baratron® Absolute Capacitance Transducer is a rugged, industrial-grade pressure and vacuum transducer with superior accuracy, repeatability, and long-term signal stability. It offers both a standard 0-10 VDC analog output signal and two (2) independently-adjusted electromechanical trip relays that can be used to switch external components such as pumps, valves, and other equipment.
R750C Baratron® Absolute Pressure Transducers are available with the following options.
|Configuration Option||Option Code|
|R750C Absolute Capacitance Manometer||R750C|
|Range Full Scale|
|0.5 in. OD tube||BA|
|1/4 in. OD weld stub||BB|
|4 VCR male||CB|
|4 VCR female||CD|
|8 VCR female||CE|
|8 VCO female||DA|
|1/4 in. NPT female||FA|
|1/4 in.NPT male||FB|
|1/8 in. NPT female||FE|
|1/8 in. NPT male||FF|
|1.33 in. OD CF||HA|
|1.0% of Reading||G|
|Trip Point Setting|
|Relays activate above trip points||G|
|Relays activate below trip points||S|
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.
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.
These pressure transducers feature Inconel® and Incoloy® nickel alloy construction of the pressure sensor allowing it to operate without damage in virtually any chemical environment, including halogens, deionized water and steam, and ozone. The sensor is fully welded with no intermediate brazing or joining materials.
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.
These pressure transducers feature two user adjustable process trip point relays, each with an adjustment range from 0.5% to 100% of Full Scale or voltage equivalent 0.05 to 10 VDC. The relays are UL listed and rated at 1.0 amps @ 30 VDC or 0.3 amps @ 30 VAC. The trip points are factory set at 55% of full scale with relay A energizing below that level and relay B energizing above the trip point.
|1||Relay Contact A, N.O.|
|8||Relay Contact A, N.C.|
|9||Relay Contact B, N.C.|
|10||Trip Point A, Setting|
|11||Trip Point B, Setting|
|13||Relay contact B, N.O.|
|14||Relay Contact B, Common|
|15||Relay contact A, Common|