Part Number: D14750880
WRH Series Hot Cathode Combination Gauge
With a single gauge, the Active Hot Cathode Wide Range Gauge (WRH) provides accurate and repeatable measurements from atmosphere to 10-10 mbar.
With the WRH gauge, you have everything you need to measure and control your system in one convenient package. It combines two measurement systems (Bayard-Alpert & Pirani). Control and monitoring are made easy with the D-SUB connector’s analogue and RS485 output, two inbuilt relays, and simple calibration. With the aid of the provided software, you can effortlessly monitor and record the functioning of your system and modify the behavior of the gauges by adjusting the output scale or establishing the set points. This gauge is the ideal partner for a wide range of settings, including general industry, high-end mass spectrometry, and research and development facilities.
Broad Range Vacuum Gauging
When measuring pressure over a large range and requiring exceptional accuracy throughout, broad range vacuum gauges are the ideal option. To guarantee the precision and control of your system, you need trustworthy vacuum gauges. The AIM Series Cold Cathode Gauge, the WRG Series Cold Cathode Combination Gauge, and the APG Series Pirani Gauge are some of our vacuum gauging options.
General Product Information
| Connection Vacuum Inlet Flange | DN 25 ISO-KF (NW25) |
| Weight | 0.475 kg |
| Supply Voltage | DC 20-30V |
| Dimension Length | 0.069 m |
| IP Rating | IP40 |
| Supply Frequency | DC Voltage |
| Dimension Height | 0.143 m |
| Dimension Width | 0.069 m |
| Connection Power | DSUB 15-PIN – Male |
Environmental Conditions
| Temperature Ambient Operation Max | 333.15 K |
| Temperature Ambient Operation Min. | 278.15 K |
| Temperature Ambient Storage Min. | 233.15 K |
| Temperature Ambient Storage Max. | 338.15 K |
Classification
| Product Pressure Range | High Vacuum – 1*10-3 – 1*10-7 mbar
Ultra High Vacuum – 1*10-7 – 1*10-11 mbar Medium Vacuum – 1 mbar – 1*10-3 mbar |
| Principle Of Measurement | Hot-cathode (Bayard Alpert) Pirani combination vacuum gauge |
Material of Construction
| Material Exposed To Vacuum | Stainless steel 1.4307; tungsten; nickel; glass; platinum; iridium; yttria oxide |
| Material Filament | Platinum/Iridium |
Performance Data
| Measurement Uncertainty | 1000 to 10 mbar ±30%
10 to 1×10-8 mbar ±10% |
| Power Consumption Max | Max 8W, 9W for degas, 0.8W for relays |
| Pressure Measurement Max. | 1.000 × 10⁵ Pa |
| Pressure Measurement Min.. | 5.000 × 10⁻⁸ Pa |
Connectivity – Communication Interface
| Communication Interfaces Customer | RS485 (serial)
0-10 V (analog output – linear) |
| Connection electrical comms interface connector | DSUB 15-PIN – Male |
Operation Conditions – Limitations
| Temperature Baking Max. | 453.15 K |
Variants
| Variant Gauges | WRH |
WRH – NW25
| Connection electrical comms interface connector | DSUB 15-PIN – Male |
| Connection Vacuum Inlet Flange | DN 25 ISO-KF (NW25) |
| Pressure Measurement Max. | 1.000 × 10⁵ Pa |
| Pressure Measurement Min.. | 5.000 × 10⁻⁸ Pa |
WRH – DN 40 CF
| Connection electrical comms interface connector | DSUB 15-PIN – Male |
| Connection Vacuum Inlet Flange | DN 40 CF (2.75″) |
| Pressure Measurement Max. | 1.000 × 10⁵ Pa |
| Pressure Measurement Min.. | 5.000 × 10⁻⁸ Pa |
