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Sauermann Si-RV4 Wireless Vacuum Probe

Sauermann
SKU: SAUESIRV4
  • High accuracy Pirani® sensor and 50 microns deep vacuum
  • Compatible with A1, A2L, A2 and A3 refrigerants
  • Wireless auto connection to manifolds and Pilot app up to 100m/328ft
More Info
Typically ships in 3-5 working

Sauermann Si-RV4 Wireless Vacuum Probe

The Sauermann Si-RV4 Wireless Vacuum Probe is designed to ensure safety and efficiency when servicing high- and low-pressure systems in air-conditioning, refrigeration and heat pump installations. This allows technicians to verify complete system evaluation before charging refrigerants and therefore prevent future system failures while ensuring great performance.

Equipped with a highly sensitive and accurate Pirani® sensor, the Si-RV4 delivers measurements down to a deep vacuum of 50 microns. This allows technicians to verify complete evacuation and system integrity with confidence. The Si-RV4 is compatible with A1, A2L, A2, and A3 refrigerants, along with selected B1 refrigerants. However, it must not be used with ammoniac refrigerant (NH₃ / R717).

Housed in polyamide that is reinforced with 30% glass fibre and TPE, the Si-RV4 is built to last in demanding HVACR environments, providing a lightweight construction that weighs only 200 g (0.44 lb). It is IP54 rated, ensuring protection against dust and rain, and features an easy-to-use single on/off button for easy operation.

Powered by three AAA alkaline batteries, the Si-RV4 delivers up to 150 hours of continuous use at 20°C (68°F), minimising downtime and frequent battery changes during extended service calls. Featuring an automatic wireless pairing at a range of up to 100 m (328 ft), it connects directly to Sauermann’s Si-RM350 and Si-RM450 manifolds and integrates seamlessly with the Sauermann Pilot mobile application.

Through the Pilot app, available on both iOS and Android, technicians can:

  • Monitor real-time readings directly on their smartphone or tablet.
  • Record, create, and sign detailed service reports.
  • Export results in PDF or CSV formats for easy sharing and archiving.
  • Enhance workflow with photo integration and customer database management.

Comparing Si-RP4 and Si-RV4

  Si-RP4 Si-RV4
Parameters Pressure Vacuum
Units bar
MPa
kPa
psi		 inHg
inH₂O
mTorr
Torr
Pa
micron
mbar
hPa
mmHg
Sensor type Precision pressure transducer High-accuracy Pirani® sensor, 50 microns deep vacuum
Measuring ranges -1 bar - 60 bar
-14 PSI - 870 PSI		 50 micron - 25000 micron
Operating temperatures Min: -20°C | -4°F
Max: 50°C | 122°F		 Min: -20°C | -4°F
Max: 50°C | 122°F
Storage temperatures Min: -20°C | -4°F
Max: 50°C | 122°F		 Min: -20°C | -4°F
Max: 50°C | 122°F
Battery life 150 hours 150 hours
Standards 2011/65/EU RoHS II
2012/19/EU WEEE
2014/53/EU RED		 2011/65/EU RoHS II
2012/19/EU WEEE
2014/53/EU RED
Wireless connectivity Auto wireless connection directly to Sauermann Pilot app Auto wireless connection to Si-RM350/450 manifolds & Sauermann Pilot app
Wireless range Up to 100 m (328 ft) Up to 100 m (328 ft)
Power supply 3x LR03 AAA 1.5 V alkaline batteries 3x LR03 AAA 1.5 V alkaline batteries
Connections 1x 1/4 FFL female 1x 1/4 FFL female
IP protection IP 54 IP 54

part number: 28143

Key Features

  • High accuracy Pirani® sensor, 50 microns deep vacuum
  • A1, A2L, A2 and A3 refrigerants compatible
  • Quick & Strong wireless auto connection (100 m/328 ft range)
  • Real time readings on manifold and mobile app
  • IP54 dust & rain proof probe

What's In The Box?

  • 1 adjustment certificate
  • 3 AAA batteries
Specification

Pressure

  • Measuring range: From -1 to 60 bar (-14 to 870 psi)
  • Pressure sensing accuracy*: ±0.5% of full scale
  • Available units: bar, psi, kPa, MPa
  • Resolution: 0.01 bar / 0.1 psi / 1 kPa / 0.001 MPa
  • Overload: 65 bar (943 psi)
  • Burst pressure: 150 bar (2175 psi)

Device

  • Operating temperature: From -20 to 50°C (-4 to 122°F)
  • Storage temperature: From -20 to 50°C (-4 to 122°F)
  • Power supply: 3x LR03 AAA 1.5 V alkaline batteries
  • Battery life: 150 h @ 20°C / 68°F
  • Wireless frequency: Range frequency from 2402 MHz to 2480 MHz with a transmission power of 8 dBm
  • Wireless range: Range between manifold and wireless probes up to 100 m (328 ft)
  • App connection: depends on smartphone radio strength, range up to 100 m (328 ft)
  • Compatibility: Smartphone minimum required versions: Android 11.0, iOS 15, BLE 5.0*
  • Connections: 1x 1/4 FFL female
  • Environmental conditions of use: In non-condensing condition Altitude: from 0 to 2000 m (0 to 6561’) Non-corrosive gases
  • European directives : 2011/65/EU RoHS II; 2012/19/EU WEEE; 2014/53/EU RED

Housing

  • Weight: 200 g (0.44 lb)
  • Control: 1 on/off button
  • Material: Polyamide 6.6 + 30% glass fibre & TPE
  • Protection: IP54
  • Dimensions: 178mm x 37.7mm x 45mm
  1. Sauermann Si-RM450 4-way Digital Refrigeration Manifold
    Sauermann Si-RM450 4-way Digital Refrigeration Manifold SKU: SAUESIRM450
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  2. Sauermann Si-RM350 2-Way Digital Refrigeration Manifold
    Sauermann Si-RM350 2-Way Digital Refrigeration Manifold SKU: SAUESIRM350
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