The Wide Range Gauge (WRG) family offers the capability of single port pressure measurement in the range atmosphere to 10-9 mbar, with a linear output. It’s a compact solution, halving the space and connectivity hardware requirement, which can be all important in many applications. The WRG has many novel features, including a patented striker, pushbutton calibration and set point controls and comprehensive diagnostics. The WRG is a cost-effective vacuum management solution when used either with a Edwards controller or directly integrated into the vacuum system controls.
Features and Benefits
| Pressure range | Atmosphere to 10-9 mbar/Torr |
| Accuracy * | Typically ±15% <100 mbar and ±30%<10-3 mbar |
| Maximum over pressure | 6 bar absolute (87 psia) |
| Power supply | +14.5 to +36 V d.c. |
| Power consumption | 2 W maximum |
| Output signal | 1.8 to 10.2 V d.c. |
| Adjustments | Atmosphere and setpoint |
| Set point | Open collector transistor |
| Maximum voltage | 40 V d.c. |
| Current | 100 mA maximum |
| Temperature range | |
| Operating | +5 to +60 oC |
| Storage | 0 to +70 oC |
| Materials exposed to vacuum (Both NW and CF versions) | Stainless steel (AISI 304, 316, 321, 347), Fluoroelastomer, soda lime glass, Tungsten, trace of Nickel and Nickel Iron |
| Internal volume | 26 cm3 |
| Weight | 0.8 kg |
| External interface connector | 8-way FCC68 / RJ45 Socket |
| Interface cables | Use range of active gauge cables |
| Standards | |
| Electromagnetic compatibility | EN 61326 Industrial Location, Class B emissions |
| Enclosure rating | IP40 |
| Pin allocation ** | |
| 1. Power supply positive | 5. Signal common |
| 2. Power supply common | 6. Set-point output |
| 3. Gauge output | 7. Atmosphere calibration |
| 4. Gauge identification | 8. Not connected |
Any vacuum system where there is a need to measure pressure over a wide range. The WRG with an AGD represents a very simple and cost effective means of achieving this.
The linear output and equation make WRG’s an attractive option for industrial OEM’s where the gauge may be directly integrated into the process controller.
The WRG is suitable for a wide range of HV and UHV applications, however if your process will spend a significant amount of time between 5x10-4 and 5x10-3mbar then Edwards recommend using independent APG100 Pirani and AIM Penning gauges, as this will improve gauge reliability for your application.
