The R740D High-Pressure Baratron® Gauge Capacitance Transducer is a rugged, industrial-grade pressure and vacuum transducer with superior accuracy, repeatability, and long-term signal stability. It has 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.
Features
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.
Differential Pressure Measurement
These capacitance manometers are referenced to local atmospheric pressure and measure the difference between the measurement side (Px) and the reference side (Pr) of the diaphragm. 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.
Inconel® and Incoloy® Construction Wetted Surfaces
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.
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.
Two Adjustable Process Trip Point Relays
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.
15-pin Type "D" Pin-Outs
| Pin | Description |
|---|---|
| 1 | Relay Contact A, N.O. |
| 2 | Pressure Output |
| 3 | Reserved |
| 4 | Reserved |
| 5 | Power Return |
| 6 | -15 VDC |
| 7 | +15 VDC |
| 8 | Relay Contact A, N.C. |
| 9 | Relay Contact B, N.C. |
| 10 | Trip Point A, Setting |
| 11 | Trip Point B, Setting |
| 12 | Pressure Return |
| 13 | Relay contact B, N.O. |
| 14 | Relay Contact B, Common |
| 15 | Relay contact A, Common |