Free Delivery Over £249*

Next Day Delivery*

60 Day Returns Guarantee

Sauermann Si-RT2 Wired Temperature Clamp

Sauermann
SKU: SAUESIRT2
Trustpilot

Never Beaten On Price

 

We’re always working hard to give you the best possible price, but if you find it cheaper somewhere else, we’ll endeavour to match the price.

 

Call 0113 248 9966 or contact us online

Typically ships in 3-5 working days
Need Some Help From Our Experts? chevron-right chevron-down

We're always happy to offer help, information & advice to find the right instrument for you, so please get in touch.

 

To speak to our sales team, call us on 0113 248 9966, use our Live Chat service or contact us online.

Members earn 40 reward points chevron-right chevron-down

Use reward points to get money off future purchases.

 

Please note: Customers must be signed into their account to be elegible. Find out more about reward points here.

FREE Delivery & 60 Day Returns chevron-right chevron-down

We offer FREE standard delivery on all orders over £249, with a range of next-day options also available on many items.

 

Find out more on our delivery information page.

Key Features
  • Innovative “Parrot” shape that handle 6 to 42mm pipes
  • High-speed NTC temperature sensor with high accuracy
  • Wide measurement range from -50 to 120 °C

Related Categories

Heat Pump Testing / Commissioning Digital Thermometers
Description

Sauermann Si-RT2 Wired Temperature Clamp

The Sauermann Si-RT2 Wired Temperature Clamp provides reliable and accurate measurement for superheat and subcooling calculations in air conditioning, refrigeration and heat pump installations. It features an innovative “parrot-shaped” clamp that ensures a secure grip and perfect contact with pipes that have a diameter of between 6 and 42 mm (0.2” to 1.7”).

The Si-RT2 boasts a high-speed NTC sensor which delivers quick and accurate temperature readings. Unlike the wireless Si-RT7, the Si-RT2 features a durable 2m reinforced cable and a strengthened 3-point jack connector with a diameter of 3.2mm to ensure dependable operation even in demanding field conditions.

The Si-RT2 works seamlessly with Si-RM350 and Si-RM450 digital manifolds, allowing for efficient system servicing and performance analysis. It offers a wide measurement range from -50 to 120°C (-58 to 248°F), making it suitable for a broad spectrum of HVACR applications.

Part number: 28140

Comparing Sauermann Si-RT2, Si-RT5, Si-RT7 and Si-TH4

Specifications Si-RT2 Si-RT5 Si-RT7 Si-TH4
Sensor type NTC NTC NTC CMOS (Temp + Humidity)
Available units °C, °F °C, °F °C, °F °C, °F
Resolution 0.1 °C / 0.1 °F 0.1 °C / 0.1 °F 0.1 °C / 0.1 °F 0.1 °C / 0.1 °F
0.1% RH
Temperature range -50 to 120 °C (-58 to 248 °F) -20 to 85 °C (-4 to 185 °F) -20 to 85 °C (-4 to 185 °F) -20 to 60 °C (-4 to 140 °F)
Temperature accuracy ±1 °C (from -20 to 85 °C) -20 to 70 °C: ±0.3 °C
70 to 85 °C: ±0.5 °C		 ±1 °C -20 to 0 °C: ±0.3 °C
0 to 60 °C: ±0.5 °C
Humidity range - - - 0–100 %RH
Humidity accuracy - - - ±2 %RH (10–90 %RH)
±5 %RH (0–10 %RH / 90–100 %RH)
Max Operating Temp Jaws: 150 °C, Handle: 90 °C - Jaws: 85 °C, Handle: 50 °C -
Power Supply Via manifold (wired) Via manifold (wired) 3 × AAA batteries 3 × AAA batteries
Battery Life - - 150 h @ 20 °C 50 h @ 20 °C
Wireless Frequency - - 2402–2480 MHz, 8 dBm 2402–2480 MHz, 8 dBm
Wireless Range - - Up to 100 m (manifold or smartphone BLE 5.0) Up to 100 m (manifold or smartphone BLE 5.0)
Storage Temp -20 to 50 °C -20 to 50 °C -20 to 50 °C -20 to 50 °C
Compatibility Si-RM350 & Si-RM450 manifolds Si-RM350 & Si-RM450 manifolds Si-RM350, Si-RM450, Sauermann Pilot app Si-RM350, Si-RM450, Sauermann Pilot app
Mounting Method Parrot-shaped clamp Hook-and-loop strap Parrot-shaped clamp Flexible probe with sliding magnet
Pipe Diameter 6–42 mm (0.2’’–1.7’’) Up to 100 mm (3.9’’) 6–42 mm (0.2’’–1.7’’) -
Cable 2 m PVC, Ø3.2 mm, max 105 °C 2 m PVC, Ø3.2 mm, max 105 °C Wireless (no cable) Wireless (no cable)

 

Key Features

  • Innovative “Parrot” shape to handle 6 to 42 mm (0.2’’ to 1.7’’) pipes
  • High-speed NTC temperature sensor with high accuracy
  • Wide measurement range: -50 to 120 °C (-58 to 248 °F)
  • Connects to the Si-RM350 and Si-RM450 digital manifolds
  • 2 m (6 ft) length with strengthened 3-point jack connector
Specification
Show Trustpilot Reviews
Specification
No
  • Temperature sensors: NTC
  • Temperature sensor range: -50 to 120°C (-58 to 248°F)
  • Temperature accuracy*: From -20 to 85°C (-4 to 185°F): ±1°C (±1.8°F)
  • Maximum operating temperatures: Jaws: 150°C (302°F) - Handle: 90°C (194°F)
  • Available units: °C, °F
  • Resolution: 0.1°C, 0.1°F
  • Pipes diameter: 6 to 42 mm (0.2’’ to 1.7’’)
  • Cable: 2 m (6 ft) length with strengthened 3-point jack connector |  Ø3.2 mm, in PVC, max. temperature 105°C (221°F)
  • Storage temperature: From -20 to 50°C (-4 to 122°F)
Reviews
Trustpilot

Accessories

  1. Sauermann Si-RM450 4-way Digital Refrigeration Manifold
    Sauermann Si-RM450 4-way Digital Refrigeration Manifold
    SKU: SAUESIRM450
    £369.00 (ex VAT)
    £442.80 (inc VAT)
    In Stock
  2. Sauermann Si-RM350 2-Way Digital Refrigeration Manifold
    Sauermann Si-RM350 2-Way Digital Refrigeration Manifold
    SKU: SAUESIRM350
    £334.00 (ex VAT)
    £400.80 (inc VAT)
    In Stock

£47.64 (Inc. VAT) £39.70 (Ex. VAT)