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KTO Thermistor & RTD Sensor

Brand: Kele

The Kele KTO OSA Sensors are designed to be cost-effective with accuracies of ±0.28° C (±0.5° F). 

Each uses metal enclosures and it is constructed for easy installation with any building automation system (BAS). 

The thermistor is made of a very stable, pre-aged material that offers long-life reliability for HVac control. 

The platinum RTD comes in 100 Ohms and 1000 Ohms versions. 

All sensors come with a Three-Year Warranty.
Features
  • Metal enclosures with plastic weather shield
  • Three-year warranty
  • ±0.28° C (±0.5° F) accuracy

1 - 12 of 4,560 Part Numbers
KTO21
KTO21
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Standard
  • Process Fitting - 3/4" Conduit Fitting
  • Certificates - Without Certificates
  • Connection - Without Nylon Insulated
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D
KTO21-D
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - 3/4" Conduit Fitting
  • Certificates - Without Certificates
  • Connection - Without Nylon Insulated
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF
KTO21-D-GF
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - Without Certificates
  • Connection - Without Nylon Insulated
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N
KTO21-D-GF-N
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate of Conformance
  • Connection - Without Nylon Insulated
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N1
KTO21-D-GF-N1
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Without Nylon Insulated
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N1-QD1/4
KTO21-D-GF-N1-QD1/4
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 8 feet (2.4 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N1-QD1/4-X25
KTO21-D-GF-N1-QD1/4-X25
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N1-QD1/4-X25-XP
KTO21-D-GF-N1-QD1/4-X25-XP
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Lead Length 24 AWG
  • RTD Connection - Standard RTD Connection
  • Accuracy - Matched Sensor Pair, Matched to ± 0.05° C (± 0.1° F)
KTO21-D-GF-N1-QD1/4-XC25
KTO21-D-GF-N1-QD1/4-XC25
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Lead Length 24 AWG Jacketed Cable
  • RTD Connection - Standard RTD Connection
  • Accuracy - Standard
KTO21-D-GF-N1-QD1/4-XC25-XP
KTO21-D-GF-N1-QD1/4-XC25-XP
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Lead Length 24 AWG Jacketed Cable
  • RTD Connection - Standard RTD Connection
  • Accuracy - Matched Sensor Pair, Matched to ± 0.05° C (± 0.1° F)
KTO21-D-GF-N1-QD1/4-XCP25
KTO21-D-GF-N1-QD1/4-XCP25
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Non-Shielded 22 AWG Plenum Cable
  • Accuracy - Standard
KTO21-D-GF-N1-QD1/4-XCP25-XP
KTO21-D-GF-N1-QD1/4-XCP25-XP
  • Model - OSA Temperature Sensor, 2,252 Ohms Thermistor Type II
  • Sensor Configuration - Dual Sensors in One Probe
  • Process Fitting - Greenfield Fitting
  • Certificates - NIST Certificate, One Reference Point 0° C (32° F)
  • Connection - Nylon Insulated Quick Disconnect 1/4"
  • Electrical - Connectors - 25 feet (7.6 meters) Non-Shielded 22 AWG Plenum Cable
  • Accuracy - Matched Sensor Pair, Matched to ± 0.05° C (± 0.1° F)
1 - 12 of 4,560 Part Numbers

Specifications

Brand

Accuracy

  • ± 0.28° C (± 0.5° F) - Thermistor
  • ± 0.33° C (± 0.60° F) - RTD

Applications

  • Building Automation System (BAS)
  • HVac Systems

Approvals & Certifications

  • Compliance/Conformance

Electrical - Free Leads

  • 8 feet (2.4 metres) & 25 feet (7.6 metres), 24 AWG Wire Leads

Electrical Connectors

  • 25 feet (7.6 metres), 22 AWG Plenum Cable

Element

  • Sensing Element: Platinum RTDs

Enclosure, Body Material

  • Metal, Weather Resistant

Mounting

  • 3/4” Conduit Fitting

NACE & NIST

  • NIST

Resistance

  • 2.252 to 100 kiloohms - Thermistor at 25° C (77° F)

RTD Type

  • Pt375 Curve, Platinum 1,000 ohms
  • Pt385 Curve, Platinum 100 & 1,000 ohms

Sensor, Probe Connection

  • 3-Wire

Sensor, Probe Material

  • 304 Stainless Steel

Sensor, Probe Type

  • RTD
  • Thermistor

Stability

  • ± 0.13° C (± 0.24° F) over 5-Years - Thermistor
  • 100 % (No Drift Platinum) - RTD

Temperature Coefficient

  • Negative Temperature Coefficient (NTC) - Thermistors
  • Positive Temperature Coefficient (PTC) - RTDs

Temperature Range

  • -12° to 110° C (10.4° to 230° F) - Thermistor
  • -55° to 115° C (-67° to 239° F) - RTD

Tube Connection

  • 1.5” (3.8 cm) Tube

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