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ST-FZR Thermistor & RTD Sensor
Brand: KeleThe Precon ST-FZR* Series Rigid Averaging Thermistor and RTD Sensor provides precision remote temperature sensing for building automation systems and mechanical equipment room instrumentation.
The active sensing elements are constructed of highly stable precision thermistor materials or platinum RTDs.
The sensing elements are sealed in a 304 stainless steel probe attached to a standard handy box with mounting bracket attached.
Features- Lifetime warranty
- ±0.2° C (±0.36° F) accuracy
- Wide selection of thermistor curves
- Four lengths to fit to most duct sizes
- Easy to mount to duct wall
- Four sensing elements in a series parallel arrangement
- Rigid sensor
Specifications
Brand
Accuracy
- 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
Applications
- Average Duct Temperature Sensing
Approvals & Certifications
- CE
Conduit Connection
- 1/2" LB Condulet Fitting
Dissipation
- 2.7 mW/°C, Power Needed to Raise the Temperature by 1° C (1.8° F)
Electrical - Free Leads
- 18" (45 cm) Free Leads - for Typical 81
Electrical Connectors
- 24 AWG, 8 feet (2.44 m) Pre-Stripped Pigtails
Enclosure, Body Material
- Metal Handy Box
Environmental Protection
- Weatherproof
Insertion 'U' Length
- 12" to 36" (30.48 to 91.44 cm) - Insertion Length
Materials of Construction
- RTD: Platinum
Mounting
- Directly to Duct with Back Box
NACE & NIST
- NIST
NPT Connection
- 1/2" NPT Male
Resistance
- Thermistor: 2.252 to 100 kΩ
RTD Type
- Pt375 Curve, 1,000 ohms - Typical 91
- Pt385 Curve, 100 ohms - Typical 81, 1,000 ohms - Typical 85
Sensor, Probe Material
- 304 Stainless Steel
Sensor, Probe Type
- RTD
- Thermistor
Stability
- Thermistor: ± 0.13° C (± 0.24° F) over 5-Years
Temperature Coefficient
- Negative Temperature Coefficient - Thermistor
- Positive Temperature Coefficient - RTD
Temperature Range
- 0° to 71° C (32° to 160° F)
- -40° to 105° C (-40° to 221° F) - Thermistor/RTD