Analogue Vacuum Transducers
- Pressure reference
- Absolute
- Piezo option
- 1400–1 mbar
- Pirani option
- 1000–0.0001 mbar
Cold Cathode / Pirani High Vacuum Gauges
A combined Pirani and cold-cathode sensor for monitoring a vacuum system through pump-down into high vacuum. Automatic sensor control covers a wide pressure span in one instrument.
Shown: Thyracont VSM and VSI cold-cathode vacuum transducer range. Select the model, sensor, connection and interface required for the application.
- Measurement principle
- Pirani and inverted magnetron; gas-dependent
- Measuring range
- 1000 to 5 × 10⁻⁹ mbar
- Pressure reference
- Absolute
- Accuracy
- About ±30% at 1000–10 mbar; ±10% at 10–0.002 mbar; ±25% at 0.002–10⁻⁸ mbar (of reading)
Price and availability
Tell us the configuration and quantity you need. Include your process requirements if you would like help with selection.
View quote listProduct details
Overview
A combined Pirani and cold-cathode sensor for monitoring a vacuum system through pump-down into high vacuum. Automatic sensor control covers a wide pressure span in one instrument.
Selection and installation
For a turbo-pumped chamber, specify the target pressure, gas load, flange and control system. Confirm the operating environment and contamination risk before selecting an ionisation sensor.
Questions about this instrument
Is the quoted accuracy the same across the whole range?
No. Accuracy changes with the pressure region and sensing principle. The lowest measurable pressure should not be treated as a blanket accuracy specification.
Can I request calibration with my gauge?
Yes. Tell us the operating range, required test points and certificate requirement. We will confirm the calibration option for the selected instrument before quoting. Discuss vacuum gauge calibration.
Which related instruments should I consider?
Compare Pirani vacuum transducers and hot-cathode / Pirani gauges. Check the pressure reference, measurement range and output rather than selecting by connection alone.
Where could this instrument be useful in a vacuum system?
For a turbo-pumped chamber, consider the measurement requirement alongside the nEXT85D turbomolecular pump. Measure at the point that matters to the process and select the gauge for the working pressure, gas and interface. A pump’s ultimate-pressure specification is not a substitute for a chamber measurement.
Specify your requirement
Send the pressure range and reference (absolute or relative), process gas, connection, quantity and required delivery date. Include the existing model or a photograph for replacement enquiries.
Compare vacuum gauge types or enquire about this instrument.
Leybold model options
Compare Leybold PTR 90 RN and PTR 225 RN. PTR 90 RN combines Pirani and cold-cathode measurement up to atmosphere. PTR 225 RN is a dedicated high-vacuum cold-cathode gauge and needs separate rough-pressure measurement where required.
Specifications
| Equipment type | Vacuum gauges & instrumentation / High & Ultra-high Vacuum Gauges |
|---|---|
| Measurement principle | Pirani and inverted magnetron; gas-dependent |
| Measuring range | 1000 to 5 × 10⁻⁹ mbar |
| Pressure reference | Absolute |
| Accuracy | About ±30% at 1000–10 mbar; ±10% at 10–0.002 mbar; ±25% at 0.002–10⁻⁸ mbar (of reading) |
| Supply | 20–30 V DC |
| Interfaces | RS485; 0–10 V, EtherCAT or PROFINET versions |
| Connection | DN25 KF, DN40 KF or DN40 CF-F |
| Response time | 50 ms |
| Flange bakeout | Up to 160°C with supply disconnected |
Calibration and instrument support
Send the gauge model, pressure range and process details for calibration, replacement or compatibility advice.
Before you order
Confirm the range, pressure reference, connection, electrical output and whether cables, a controller or calibration are included.
Availability, lead time and the applicable warranty are confirmed for your quotation. A catalogue listing does not reserve stock.
What to check in your quotation · Delivery · Returns and faults
Enquire about this product
Cold Cathode / Pirani High Vacuum Gauges
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Related equipment
LEYBOLD
Leybold PENNINGVAC PTR 90 RN Vacuum Gauge
- Measurement principle
- Cold cathode / Pirani combination
- Pressure range
- 1 × 10⁻⁹–1000 mbar
- Vacuum connection
- DN25 KF, DN40 KF or DN40 CF
Electronic Vacuum Switches
- Sensor choices
- Ceramic piezo or Pirani
- Pirani switching range
- 20–0.001 mbar
- Output
- Potential-free changeover relay
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Replacement filament assemblies for Edwards Spectron 300E, 3000 and 5000 leak detectors. Quote reference D154 20 102 when contacting Girovac.
View specificationsCompare selected equipment
Compare the stated conditions as well as the values. A missing specification is not a zero rating; confirm suitability with Girovac.