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WRG-D
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. Its 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 new 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 system controls.
Features and Benefits
- Microprocessor signal processing gives seamless transition between Pirani and magnetron outputs as well as linear output (log pressure scale)
- Automatic vacuum setting of Pirani gauge element
- Single push button atmosphere setting
- Easily programmed set point covering entire measuring range
- Magnetron uses an advanced patented technique for highly reliable striking, even at high vacuum or in relatively contaminated conditions
- Extended service intervals and gauge lifetime, through reduction of HT voltage after ignition and low discharge current
- Ultra compact, featuring recessed electrical connector
- Easy service; both Pirani and magnetron elements are individually replaceable
- Comprehensive failure mode diagnostics facility
- D-type version includes cable strain relief and enhanced ingress protection (IP44)
Applications
- 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.
| Technical data | |
| Pressure range | Atmosphere to 10-9 mbar/Torr |
| Accuracy * | Typically ±15%-3mbar |
| 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 |
* Accuracy is reduced at the limits of the measuring range.
- Wide Range Gauge Datasheet (pdf, 393KB)