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Thermistor, Immersion

 

Installation and Operation

 

 

 

#NSA-A/CP-I-2.5-4X, NSA-A/CP-I-4-4X, NSA-A/CP-I-6-4X, NSA-HH/CP-I-2.5-PB-C, NSA-HH/CP-I-4-PB-C 
NSA-HH/CP-I-6-PB-C 

– 11/15/2019 

 

Specifications subject to change without notice. 

Catalog No. 11-808-785-01 

Page 

1

 of 

5

 

Overview 

 

Carrier Immersion Thermistors provide a predictable and accurate output over the specified 
temperature range. Each sensor configuration is designed and manufactured for long-term 
quality and performance. Carrier incorporates standard features such as double encapsulation 
and etched Teflon leads where applicable. 

 

 

 

 

 

Part Numbers 

 

NSA-A/CP-I-2.5-4X 

NSA-A/CP-I-4-4X 

NSA-A/CP-I-6-4X 

NSA-HH/CP-I-2.5-PB-C 

NSA-HH/CP-I-4-PB-C 

NSA-HH/CP-I-6-PB-C 

 

 

Specifications 

 

Number Sensing Points: 

One 

Storage Temperature Range: 

-40 to 85 °C (-40 to 185 °F) 

Operating Humidity Range: 

0 to 90% RH, non-condensing 

Probe Diameter | Thermowell Bore Diameter: 

0.250” (6.35mm) | 0.260” 

Probe Material | Thermowell Material: 

304 Stainless Steel | 304 Series Stainless Steel 

Wire Size 

22 AWG (0.65 mm) 

Thermowell Instrument | Process Thread Size: 

½” NPS (National Pipe Straight) Female Thread | ½” NPT (National Pipe 
Tapered) Male Thread 

Enclosure Specifications 
(Temperature, Material, 
Flammability, NEMA/IP Ratings) 

“-PB” Enclosure

: ABS Plastic, UL94-HB, -30 to 90 °C (-22 to 194 °F), 

Plenum Rated 

“-4X” Enclosure

: Polystyrene Plastic, UL94-V2, -40 to 70°C (-40 to 158°F), 

NEMA 4X (IP 66) 

Sensor Output @ 25 °C (77 °F):  
(Lead Wire Colors) 

10 KΩ nominal (White/Green) 

Immersion Length 

NSA-xxx-2.5

2.5” (63.50 mm) | 

NSA-xxx-4

4.0“ (101.60 mm) 

NSA-xxx-6

6.25” (158.75 mm) 

Probe Length 

NSA-xxx-2.5

4.31” (109.47 mm) +/- 0.13” (3.30 mm) 

NSA-xxx-4

: 5.81“ (147.57 mm) +/- 0.13” (3.30 mm) 

NSA-xxx-6

: 7.81” (198.37 mm) +/- 0.13” (3.30 mm) 

 

 

 

Summary of Contents for NSA-A/CP-I-2.5-4X

Page 1: ...r Sensing Points One Storage Temperature Range 40 to 85 C 40 to 185 F Operating Humidity Range 0 to 90 RH non condensing Probe Diameter Thermowell Bore Diameter 0 250 6 35mm 0 260 Probe Material Thermowell Material 304 Stainless Steel 304 Series Stainless Steel Wire Size 22 AWG 0 65 mm Thermowell Instrument Process Thread Size NPS National Pipe Straight Female Thread NPT National Pipe Tapered Male...

Page 2: ...can also be drilled and tapped Figure 2 The pipe system will need to be drained unless a Hot Tap is being used The recommend drill size is 23 32 in 18 mm Drill the hole and tap the hole with 14NPT Always use proper thread sealants on tapered pipe threads of the thermowell Screw the thermowell into the Threadolet Tee or tapped hole using a wrench to tighten it firmly Refill the system and check for...

Page 3: ... NSA A CP I 4 4X NSA A CP I 6 4X NSA HH CP I 2 5 PB C NSA HH CP I 4 PB C NSA HH CP I 6 PB C 11 15 2019 Specifications subject to change without notice Catalog No 11 808 785 01 Page 3 of 5 Elbow Assembly Figure 3 Tee Mount Assembly Figure 4 Temperature Wiring Figure 5 ...

Page 4: ...type units are supplied with 2 flying lead wires and all RTD s are supplied with 2 or 3 flying lead wires see Figure 6 The number of wires needed depends on the application Connect thermistor RTD wire leads to controller analog input wires using wire nuts terminal blocks or crimp style connectors All wiring must comply with all local and National Electric Codes After wiring attach the cover to the...

Page 5: ...rom sensor terminal block tighten terminal block screws down and take a resistance ohm reading with a multimeter Compare the resistance reading to the Temperature Vs Resistance Curves online http www workaci com content thermistor curves 0 Verify proper mounting location to confirm no external factors are affecting reading Sensor reads infinity very high resistance Sensor or wires are open Sensor ...

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