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NTC
Thermistors
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CWF
CWF
Precision NTC Thermistor Probes for Temperature
Measurement
The CWF
series NTC Thermistors are supplied in 5 basic styles
of enclosures designed to facilitate installation
in a wide variety of applications. PVC leads are
applied to a precision, high-reliability NTC thermistor,
insulated with heat conductive water resistant materials
and potted into any of a wide variety of probe bodies.
CWF thermistors are also available with custom housings
or custom lead lengths for remote sensing and temperature
control in difficult conditions.
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CWF >
PDF Tech Info, Schematics and More
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Application
• Heating, Ventilation & Air Conditioning
• Temperature Regulation and Measurement
• Automotive Electronics
• Water Heaters
• Household Appliances such as refrigerators,
water coolers, dishwashers and many others
Characteristics
• Wide variety of installation fixtures and
probes are available to suit your needs.
• Small size and fast response (temperature
coefficient of resistance can reach- (2~5%/°C)
• Long-term Stability and Reliability (yearly
drift of ≤1%)
• Excellent Tolerance and Interchangeability
(the accuracy of R and B value can be ±1%)
• Double layer packaging provides excellent
insulation and high strength and impact resistance.
• Dissipation Constant type 1 package ≥2.0mW/°C,
type 2 package ≥4.0mW/°C
• Time Constant of ≤15S to 70S |
Dimensions (mm)
| Code |
A |
B |
C |
D |
| D |
3 |
5 |
6 |
7 |
| L1 |
5 |
10 |
15 |
15 |
| L2 |
Customer
Specified |
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CWF1 (Ethoxyline dipped)
Characteristics: Moisture resistant,
good insulation, high reliability, small time constant,
quick responses.
Applications: Household air-conditioning,
refrigeration and many others.
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| Code |
A |
B |
C |
D |
E |
F |
G |
| D |
3 |
5 |
5 |
5 |
6 |
6 |
6 |
| L1 |
20 |
20 |
25 |
30 |
20 |
25 |
30 |
| L2 |
Customer
Specified |
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CWF2 (Packaged in aluminum, copper,
or stainless steel probe body)
Characteristics: High resistance
to thermal shock, moisture resistant, strong and secure
structure, high dissipation coefficient, the test
current can be higher than that of the ethoxyline
resin-package.
Applications: All kinds of refrigeration,
air-conditioning, water heaters, drinking fountains,
and more. |
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| Code |
A |
B |
C |
D |
| D |
3 |
3.5 |
4 |
5 |
| L1 |
10 |
15 |
15 |
15 |
| L2 |
Customer
Specified |
| Code |
A |
B |
| D |
8 |
8 |
| L1 |
35 |
50 |
| L2 |
Customer
Specified |
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CWF3 (Plastic body)
Characteristics: Good dimensional
tolerances, good heat resistance and moisture protection,
high voltage resistance.
Applications: All kinds of Air-conditioning,
refrigeration, and more.
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CWF4 (Sheet metal attachment
fixtures)
Characteristics: Wide variety of
fixtures, suitable for most applications.
Applications: Fan control, industrial
temperature controllers, and more.
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CWF5 (Special probes)
Characteristics: Small time constant,
fast response, flexible and secure.
Applications: Water heaters, electronic
thermometers, and more.
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Specification
(1)
NTC Temp sensor
(2) Package Option
1- Dipped ethoxyline resin
2- Aluminum,copper, or stainless
steel housing
3- Plastic body
4- Sheet metal attachment fixtures
5- Special probes
(3) The Rated Resistance at 25ºC
Example:103=10x103=10000Ω=10KΩ
(4) The Precision Symbol of Rated
Resistance
F: ±1% G:±2%
H:±3% J:±5%
(5) B value (25/50ºC) B value example:
3380K
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Main Techno Parameter
| Part
No. |
Rated
Resistance R25 |
B
Value
(25/50°C) |
Dissi.Coef.
(mW/°C) |
Themal
time Constant (S) |
Operating
Temp.
(°C) |
| Range
(KΩ) |
Allowable
Tolerance
(%) |
(K) |
Allowable
Tolerance
(%) |
| CWF3100
CWF3270
CWF3380
CWF3470
CWF3600
CWF3950
CWF4000
CWF4050
CWF4150
CWF4300
CWF4500 |
0.1-20
0.2-20
0.5-50
0.5-50
1-100
5-100
5-100
5°-200
10-250
20-1000
20-1000 |
+/- 1
+/-
2
+/-
3
+/-
4 |
3100
3270
3380
3470
3600
3950
4000
4050
4150
4300
4500 |
+/-
1
+/- 2 |
To type 1 package ≥ 2.0
To type 2 package ≥ 4.0
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To type 1 package ≤ 15
To type 2 package ≤ 70
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-55
to +125 |
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8415
Mountain
Sights Avenue, Montreal (Quebec), H4P 2B8 Canada
