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ST-R*S/ST-R*SC Thermistor & RTD Sensor

Brand: Kele

The PreCon Stainless Steel Sheath Thermistor and RTD Sensors provide precision remote temperature sensing for building automation systems and mechanical equipment room instrumentation. The active sensing element is a highly stable precision thermistor material or platinum RTD. The sensing element is ruggedized and sealed with a thermally conductive compound in a versatile 3" (7.6 cm) long stainless steel tube. The probe is waterproof, and the sensor is ideal for use in refrigeration cases, or as a strap-on sensor for pipes. 

ST-R*S The Model ST-R*S Stainless Sheath Sensor is suitable for direct application to pipe surfaces for chilled or hot water measurement. It is also used for freezer cases where moisture protection is important. This rugged strap-on sensor comes with an 8 ft (2.4 m), 24-gauge zip cord lead. 

ST-R*SC The Model ST-R*SC Stainless Steel Sheath Sensor comes with a rugged 25 ft (7.6 m) cable when ordered with the "C" option. The 25 ft (7.6 m) cable allows for termination away from areas of condensation. It is an ideal choice for freezer case applications.
Features
  • Lifetime warranty
  • Wide selection of thermistor and RTD curves
  • Tip sensitive for precise temperature response
  • Durable 304 stainless steel casing
  • Easy to mount to wall, box, or pipe
  • Waterproof probe

Specifications

Brand

Accuracy

  • 0.03° C (± 0.054° F) - RTD Typical 71
  • 0.15° C (± 0.27° F) - RTD Typical 81, 85
  • 0.2° C (± 0.36° F) - Thermistor
  • 0.30° C (± 0.54° F) - RTD Typical 91
  • 0.40° C (± 0.72° F) - RTD Typical 63

Approvals & Certifications

  • CE

Dissipation

  • Heat: 2.7 mW/°C (Power Needed to Raise the Temperature by 1° C [33.8° F])

Electrical - Free Leads

  • Typical 71 & 81 Sensor have 18” (45 cm) Free Leads - Wiring Terminations

Electrical Connectors

  • 8 feet (2.44 metres) of 24 AWG Pigtails with Pre-Stripped Ends - Wiring Terminations

Enclosure, Body Material

  • 304 Stainless Steel

Environmental Protection

  • Water-Proof

Insertion 'U' Length

  • 1” to 60” (2.54 to 152.4 cm)

Materials of Construction

  • RTD: Platinum

Mounting

  • Bracket
  • Pipe
  • Wall Mounted

NACE & NIST

  • NIST

Resistance

  • 2.252 to 100 kiloohms

RTD Type

  • Ni 1,000 ohms - Typical 63
  • Pt375 Curve 1,000 ohms - Typical 91
  • Pt385 100 ohms - Typical 71, 81, 1,000 ohms - Typical 85

Sensor, Probe Type

  • RTD
  • Thermistor

Stability

  • ± 0.13° C (± 0.24° F) over 5-Years - Thermistor

Temperature Coefficient

  • RTD: Positive Temperature Coefficient
  • Thermistor: Negative Temperature Coefficient

Temperature Range

  • -40° to 105° C (-40° to 221° F) - Thermistor/RTD
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