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KTO Thermistor & RTD Sensor
Brand: KeleThe 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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