| 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 |
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) |
2.00" (50.8mm) |
22" (559mm) |
Stainless Steel |
-006 |
| 0.375" (9.5mm) |
3.00" (76.2mm) |
22" (559mm) |
Stainless Steel |
-009 |
| 0.190" (4.8mm) |
1.50" (38.1mm) |
22" (559mm) |
Aluminum |
-015 |
| 0.200" (5.1mm) |
0.990" (25.1mm) |
22" (559mm) |
Aluminum |
-020 |
| 0.230" (5.8mm) |
0.820" (20.8mm) |
22" (559mm) |
Copper |
-025 |
| 0.240" (6.1mm) |
0.900" (22.9mm) |
22" (559mm) |
Aluminum |
-030 |
| 0.240" (6.1mm) |
1.37" (34.8mm) |
22" (559mm) |
Aluminum |
-035 |
| 0.295" (7.5mm) |
2.25" (57.2mm) |
22" (559mm) |
Aluminum |
-040 |
| 0.328" (8.3mm) |
1.70" (43.2mm) |
22" (559mm) |
Aluminum |
-045 |
| 0.355" (9.0mm) |
0.500" (12.7mm) |
22" (559mm) |
Copper |
-050 |
| 0.405" (10.3mm) |
2.25" (57.2mm) |
22" (559mm) |
Aluminum |
-055 |
| 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: WNP3002-045 (0.328" Diameter x 1.70" Long Aluminum Housing) |
|
.
|
|
INTERCHANGEABLE
THERMISTOR DATA
Curve "H"
(1ºC
Increments)
Resistance
Ratio vs Temperature |
|
| Temperature
ºC
ºF |
Resistance Ratio (R/R25) |
Temperature
ºC
ºF |
Resistance Ratio (R/R25) |
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"
(5ºC
Increments)
Resistance
Ratio vs Temperature |
| Temperature ºC
ºF |
Resistance
Ratio (R/R25) |
Temperature
ºC
ºF |
Resistance Ratio (R/R25) |
-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 |
|
