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| Nickel Film Temperature Sensor TD4 Welwyn Components * Good long term stability * Rugged construction * Extremely economic solution Electrical Data TD4 Temperature range Resistance Range Alpha Standard value Tolerance Interchangeability Self Heating (in air) Recommended measuring current Time constant (time to reach 50% of 10C, in stirred water) Insulation resistance @25C Tolerance Codes @25C @100 mW/C mA secs ohms C R25 = 100 ohms R25 = 1000 ohms ohms C 1.0 D 1.0 2.6 C ohms ppm/C Actual -55 to 155 20R to 1K 6000 5850 100 2.0 F 2.0 3.8 0.12 1 0.4 >1G 4.0 G 4.0 6.1 Note: Product can be calibrated at the factory, at extra cost Resistance vs Temperature Resistance ohms 66.6 70.6 74.8 79.1 83.5 88.0 92.7 97.5 100 102.5 107.6 112.8 Temperature C -50 -40 -30 -20 -10 0 10 20 25 30 40 50 Resistance ohms 118.1 123.6 129.2 135.0 140.9 146.9 153.0 159.3 165.7 172.2 Temperature C 60 70 80 90 100 110 120 130 140 150 Definitions R a R0 t = = : : R0 (1+At+Bt2) 10000 (R0 - R100) R0 (ppm/C) Resistance at 0C Resistance at 100C Temperature R100 : Constants: A B Ro = = = 0.005247 0.00000753 88.0 Resistance v temperature for 100 sensor General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn's own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Issue D * 08.03 (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 188 Nickel Film Temperature Sensor TD4 Welwyn Components TD4 tolerance vs temperature 5 4 3 2 Tolerance (C) 1 0 -1 -2 -3 -4 -5 -75 -50 -25 0 25 50 75 100 125 150 175 Temperature (C) Performance Data for R0 = 100ohms Actual Performance Long term stability (1000hrs @ 155C) Thermal shock (10 cycles -55C to 155C) Resistance @ 25C Equivalent to Resistance @ 25C Equivalent to % C % C 0.18 0.4 0.02 0.04 Physical Data Dimensions (mm) & Weight (g) L max D max f min d nom PCB mounting centre TD4 7.2 2.5 30 0.6 10.2 Min Bend Radius 0.6 0.24 Wt. nom d D L f Construction A nickel film is deposited onto a high quality ceramic rod. Nickel-plated steel caps are force fitted to the rod and termination wires are welded to the caps. A laser is used to adjust the resistance value of the sensor by cutting a helix into the film The body is protected with a high purity organic coating. Marking TD4: Type reference, resistance and tolerance code. Packaging The standard packaging is in boxes. Taped sensors (on reel or in ammo pack) can also be supplied by special request. Terminations Material Strength Solder-coated copper wire The terminations meet the requirements of IEC 68.2.21 The terminations meet the requirements of IEC115-1 Clause 4.17.3.2 Standard Quantities Per Package Type Small box Large box Reel Ammo pack TD4 250 1,000 5,000 1,000 Solderability (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Issue D * 08.03 189 |
Price & Availability of TD4
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