NTC Probes & Assemblies

WECC's  NTC probes and assemblies are ruggedly designed to withstand a variety of environmental conditions when used for temperature measurement and control. They also incorporate interchangeable NTC Thermistors for excellent accuracy and interchangeability over a large temperature range.
Physical Specifications

  wpe3.jpg (14582 bytes)

Housing Table

Dim "A" Dim "B" Dim "C" Material Dash #
0.190" (4.8mm) 1.50" (38.1mm) 22" (559mm) Stainless Steel -003
0.250" (6.4mm) 1.88" (48mm) 22" (559mm) Stainless Steel -004
0.375" (9.5mm) 2.00" (76.2mm) 22" (559mm) Stainless Steel -007

 

Electrical Specification Table

Resistance

@ 25 °C (Ohms)

        Resistance Tolerance @ 25?C

Curve Type

(see table below)

+/- 1%

+/- 2% +/- 5%

PART #

PART  # PART  #
2,252   WNP2502-xx       WNP2503-xx        WNP2504-xx     H
3,000 WNP3002-xx  WNP3003-xx  WNP3004-xx  H
4,000 WNP4002-xx  WNP4003-xx WNP4004-xx H
5,000 WNP5002-xx WNP5003-xx WNP5004-xx H
6,000 WNP6002-xx WNP6003-xx WNP6004-xx H
7,000 WNP7002-xx WNP7003-xx WNP7004-xx H
8,000 WNP8002-xx WNP8003-xx WNP8004-xx H
9,000 WNP9002-xx WNP9003-xx WNP9004-xx H
10,000 WNP1012-xx WNP1013-xx WNP1014-xx H
11,000 WNP1112-xx WNP1113-xx WNP1114-xx H
12,000 WNP1212-xx WNP1213-xx WNP1214-xx H
Note: Add Housing Dash Number to Part Number 

Example:

WNP3002-003 (0.190" Diameter x 1.50" Long Stainless Steel  Housing)

wpe2.gif (5981 bytes)

INTERCHANGEABLE THERMISTOR DATA

Curve "H" (1 °C  Increments)

Resistance Ratio vs Temperature

Temperature Resistance  Ratio (R/R25) Temperature Resistance  Ratio (R/R25
°C    °F °C    °F

0

32

3.2657

36

97

0.6268

1

34

3.1036

37

99

0.6016

2

36

2.9505

38

100

0.5776

3

37

2.8058

39

102

0.5546

4

39

2.6690

40

104

0.5327

5

41

2.5396

41

106

0.5117

6

43

2.4174

42

108

0.4918

7

45

2.3018

43

109

0.4726

8

46

2.1922

44

111

0.4543

9

48

2.0886

45

113

0.4369

10

50

1.9904

46

115

0.4201

11

52

1.8974

47

117

0.4041

12

54

1.8093

48

118

0.3889

13

55

1.7258

49

120

0.3742

14

57

1.6465

50

122

0.3602

15

59

1.5715

51

124

0.3467

16

61

1.5003

52

126

0.3340

17

63

1.4327

53

127

0.3217

18

64

1.3684

54

129

0.3099

19

66

1.3074

55

131

0.2986

20

68

1.2495

56

133

0.2878

21

70

1.1944

57

135

0.2774

22

72

1.1421

58

136

0.2675

23

73

1.0923

59

138

0.2580

24

75

1.0451

60

140

0.2488

25

77

1.0000

61

142

0.2400

26

79

0.9573

62

144

0.2316

27

81

0.9166

63

145

0.2235

28

82

0.8778

64

147

0.2157

29

84

0.8409

65

149

0.2083

30

86

0.8057

66

151

0.2011

31

88

0.7722

67

153

0.1941

32

90

0.7403

68

154

0.1876

33

91

0.7099

69

156

0.1813

34

93

0.6809

70

158

0.1752

35

95

0.6532

     

INTERCHANGEABLE THERMISTOR DATA

Curve "H" (5 °C  Increments)

Resistance Ratio vs Temperature

Temperature Resistance  Ratio (R/R25) Temperature Resistance  Ratio (R/R25
°C    °F °C    °F

-50

-58

67.260

55

131

0.2987

-45

-49

47.337

60

140

0.2488

-40

-40

33.727

65

149

0.2084

-35

-31

24.312

70

158

0.1753

-30

-22

17.721

75

167

0.1482

-25

-13

13.054

80

176

0.1257

-20

-4

9.714

85

185

0.1072

-15

5

7.299

90

194

0.09174

-10

14

5.535

95

203

0.07882

-5

23

4.234

100

212

0.06798

0

32

3.266

105

221

0.05884

5

41

2.540

110

230

0.05110

10

50

1.990

115

239

0.04454

15

59

1.571

120

248

0.03894

20

68

1.249

125

257

0.03416

25

77

1.000

130

266

0.03005

30

86

0.8055

135

275

0.02652

35

95

0.6531

140

284

0.02347

40

104

0.5325

145

293

0.02082

45

113

0.4368

150

302

0.01853

50

122

0.3602

 




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