Sauermann Si-RV4 Wireless Vacuum Probe
Sauermann Si-RV4 Wireless Vacuum Probe is backordered and will ship as soon as it is back in stock.
This wireless vacuum probe accurately measures absolute pressure, to ensure optimal refrigerant system evacuation down to deep vacuum in air conditioning, refrigeration and heat pump installations.
The Si-RV4 allows all types of refrigerant-based installations to be serviced quickly and safely. It connects easily to the Si-RM350 and Si-RM450 manifolds and to the mobile application Sauermann Pilot.
A1 / A2L / A2 / A3 refrigerants compatible
Compatible with some B1 refrigerants, see list of refrigerants for details on which refrigerants are compatible. The device must not be used with ammoniac refrigerant (NH3 / R717).
Designation: Si-RV4 Sales reference: 28143
From -20 to 50°C (-4 to 122°F) This wireless probe provides accurate temperature measurement to enable the calculation of superheat and subcooling values in air conditioning, refrigeration and heat pump installations. Its parrot-shaped clamp ensures perfect contact with pipes from 6 to 42 mm. The Si-RT7 allows all types of refrigerant-based installations to be serviced quickly, thanks to the excellent responsiveness of its NTC sensor. It connects easily to the Si-RM350 and Si-RM450 manifolds, as well as to the mobile application Sauermann Pilot.
Key Features
- High accuracy Pirani® sensor, 50 microns deep vacuum
- A1, A2L and A3 refrigerants compatible
- Quick & Strong wireless auto connection (100 m range)
- Real time readings on manifold and mobile app
- IP54 dust & rain proof probe
Applications
- Superheat measurement
- Subcooling measurement
- Refrigeration service
- Heat pump diagnostics
- Air conditioning service
Technical Specifications
| Specification | Value |
|---|---|
| Measurement & Discharge Valves | 1 Vacuum Input |
| Measuring Range | 50 to 25,000 Microns |
| Pressure Sensing Accuracy | 100 to 2,000 Microns: ±(5% of measured value ±5 Microns) Temperature Dependence: ±0.0005 × (T-20) Microns when T < 0°C or T > 30°C |
| Available Units | Micron, mbar, Torr, mTorr, inH₂O, inHg, mmHg, hPa, Pa |
| Resolution | Micron: 1 Micron (50–1,000), 10 Microns above mbar: 0.00001 mbar (0.06666–1.33322), 0.0001 mbar above Torr: 0.001 Torr (0.050–1.000), 0.01 Torr above mTorr: 1 mTorr (50–1,000), 10 mTorr above inH₂O: 0.0001 inH₂O (0.0267–0.5352), 0.01 inH₂O above inHg: 0.000001 inHg (0.001968–0.039370), 0.00001 inHg above mmHg: 0.001 mmHg (0.050–1.000), 0.01 mmHg above hPa: 0.0001 hPa (0.0666–1.3332), 0.001 hPa above Pa: 0.01 Pa (6.66–133.32), 0.1 Pa above |
| Overload Pressure | 27.5 bar (400 psi) |
| Burst Pressure | 35 bar (507 psi) |
*All accuracies specified were obtained under laboratory conditions and are guaranteed only for measurements performed under the same conditions or with calibration compensation.
Warranty:
Technical Documents:
Sauermann Si-RV4 Wireless Vacuum Probe is backordered and will ship as soon as it is back in stock.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

