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Kele Thermistor and RTD Sensor, ST-B

ST-B Thermistor & RTD Sensor

Brand: Kele
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The Precon ST-B* Series Button Style Flush-Mount Thermistor and RTD Sensors provide precision room temperature sensing for building automation systems. 

The active sensing element is made of a highly stable, precision thermistor material or platinum RTD. 

This design provides moisture/vapor resistance and is bonded to either brass, steel or aluminum button style housing easily mountable into any wall. 

This sensor is intended for interior use only.
Features
  • Lifetime warranty
  • ±0.2° C (±0.36° F) thermistor accuracy
  • ±0.15° C (±0.27° F) or ±0.30° C (0.54° F) RTD accuracy
  • Ultra high accuracy available
  • Wide selection of thermistor and RTD curves
  • Optional brass, steel, aluminum metal button style housing
  • Small, nearly invisible footprint

1 - 12 of 36 Part Numbers
ST-B11K-A
ST-B11K-A
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type III with 11K Shunt (Gray Leads)
  • Housing - Aluminium Housing
ST-B11K-B
ST-B11K-B
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type III with 11K Shunt (Gray Leads)
  • Housing - Brass
ST-B11K-S
ST-B11K-S
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type III with 11K Shunt (Gray Leads)
  • Housing - Steel Housing
ST-B21-A
ST-B21-A
  • Model - 2,252 Ohms Button Style Thermistor at 25° C (77° F), Type II (Green Leads)
  • Housing - Aluminium Housing
ST-B21-B
ST-B21-B
  • Model - 2,252 Ohms Button Style Thermistor at 25° C (77° F), Type II (Green Leads)
  • Housing - Brass
ST-B21-S
ST-B21-S
  • Model - 2,252 Ohms Button Style Thermistor at 25° C (77° F), Type II (Green Leads)
  • Housing - Steel Housing
ST-B22-A
ST-B22-A
  • Model - 3,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Blue Leads)
  • Housing - Aluminium Housing
ST-B22-B
ST-B22-B
  • Model - 3,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Blue Leads)
  • Housing - Brass
ST-B22-S
ST-B22-S
  • Model - 3,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Blue Leads)
  • Housing - Steel Housing
ST-B24-A
ST-B24-A
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Yellow Leads)
  • Housing - Aluminium Housing
ST-B24-B
ST-B24-B
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Yellow Leads)
  • Housing - Brass
ST-B24-S
ST-B24-S
  • Model - 10,000 Ohms Button Style Thermistor at 25° C (77° F), Type II (Yellow Leads)
  • Housing - Steel Housing
1 - 12 of 36 Part Numbers

View_Details

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

Applications

  • Building Automation Systems

Approvals & Certifications

  • CE

Dissipation

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

Electrical - Free Leads

  • 18” (45 cm) Free Leads - for Typical 71, 81
  • 8 feet (2.4 metres) & 25 feet (7.6 metres), 24 AWG Wire Leads

Element

  • Sensing Element: Platinum RTDs

Enclosure, Body Material

  • 304 Stainless Steel
  • Aluminum
  • Brass

Mounting

  • Wall Mounted

Resistance

  • 2.252 to 100 kiloohms - Thermistor

RTD Type

  • Typical 63: Ni1000
  • Typical 71, 81 & 85: 100 & 1,000 ohms Pt385 Curve
  • Typical 91: 1,000 ohms Pt375 Curve

Sensor, Probe Type

  • RTD
  • Thermistor

Stability

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

Temperature Coefficient

  • Negative Temperature Coefficient - Thermistor
  • Positive Temperature Coefficient - RTD

Temperature Range

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

Documentation

Data Sheets

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