ST-R21SC | Kele | Temperature Sensors & Transmitters
Bullet Temperature Sensor, 2252Ω Encapsulated Thermistor @ 77°F (25°C), Type II (Green leads), Stainless Steel Sheath, 25 ft Rugged Cable
Brand:Kele
MPN:ST-R21SC
SKU:ST-R21SC
List Price:
$66.92
Today's Price:
$34.80
Log in for customized pricingproduct specifications
Type
Thermistor
Probe Length
3 in
Sensor Element
2.2K Thermistor
Housing Style
Bullet
Lead Length
8 ft
Accessory
#20,APB-28,PN-46,TCC-111,TCC-12,T85U-XR,T81U-XR,T91U-XR,UR,DCP-1.5-W,DCPA-1.2
Application
Cold Water Systems,Hot Water Systems,Retrofit,Hydronic Heating Systems,Chillers
Output Signal
Resistance
product series specifications
Accuracy: ±0.36°F (0.2°C)
Thermistor: ±0.36°F (0.2°C)
RTD:
Type 63: ±0.72°F (0.40°C)
Type 71: +/-0.0774°F (0.043°C)
Type 81, 85: ±0.27°F (0.15°C)
Type 91: ±0.54°F (0.30°C)
Sensor Type:
Thermistor: 2.252 kΩ, 3 kΩ, 10 kΩ Type II, III & III w/11K shunt, 20 kΩ, 100 kΩ
RTD:
Type 63: 1000Ω Nickel
Type 71, 81: 100Ω Pt 385 Curve
Type 85: 1000Ω Pt 385 Curve
Type 91: 1000Ω Pt 375 Curve
Temperature Range: Thermistor/RTD: -40° to 221°F (-40° to 105°C)
Temperature Coefficient: Thermistor: Negative temperature coefficient; RTD: Positive temperature coefficient
Temperature Stability:
Thermistor: 0.24°F (0.13°C) over five years
Heat Dissipation: 2.7 mW/°C (power needed to raise the temperature by 1°C)
Mounting: Directly to wall or pipe using standard clips and brackets
Wiring Terminations: 8' (2.4m) of 24 AWG pigtails with pre-stripped ends, type 71 & 81 have 18" leads
Weight:ST-R*S:0.15 lb (0.07 Kg) with no options;ST-R*SC:0.45 lb (0.2 Kg) with no options
Approvals: CE
Warranty: Lifetime
product series 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
more information & related documents
Series Description
The Precon ST-R_S, ST-R_SC Series Stainless Steel Sheath Sensors from PreCon provide precise 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. Each sensor has a sensing element that is ruggedized and sealed with a thermally conductive compound in a versatile 3 in (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. The thermistor operating range is -30 degrees to 230 degrees F (-34 degrees to 110 degrees C). The RTD operating range is -68 degrees to 240 degrees F (-55 degrees to 116 degrees C). 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 (2.4m), 24-gauge zipcord lead. The Model ST-R_SC Stainless Steel Sheath Sensor comes with a rugged 25-ft (7.6m) cable when ordered with the option. The 25-ft (7.6m) cable allows for termination away from areas of condensation. It is an ideal choice for freezer case applications.
Kele Description
FREEZER 2252 OHM THERMISTOR
Manufacturer
Kele
