Tekmar 084 Indoor Sensor Manual de usuario descargar pdf (Pagina 3)

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Sensor Testing Instructions

A good quality test meter capable of measuring up to 5,000 k (1 k = 1000 ) is required to measure the sensor resistance. In addition

to this, the actual temperature must be measured with either a good quality digital thermometer, or if a thermometer is not available, a

second sensor can be placed alongside the one to be tested and the readings compared.

First measure the temperature using the thermometer and then measure the resistance of the sensor at the control. The wires from the

sensor must not be connected to the control while the test is performed. Using the chart below, estimate the temperature measured by

the sensor. The sensor and thermometer readings should be close. If the test meter reads a very high resistance, there may be a broken

wire, a poor wiring connection or a defective sensor. If the resistance is very low, the wiring may be shorted, there may be moisture in

the sensor or the sensor may be defective. To test for a defective sensor, measure the resistance directly at the sensor location with the

wires disconnected.

Note: Do not apply voltage to a sensor at any time as damage to the sensor may result.

Temperature Resistance

°F °C

-50 -46 490,813

-45 -43 405,710

-40 -40 336,606

-35 -37 280,279

-30 -34 234,196

-25 -32 196,358

-20 -29 165,180

-15 -26 139,402

-10 -23 118,018

-5 -21 100,221

0 -18 85,362

5 -15 72,918

10 -12 62,465

15 -9 53,658

Temperature Resistance

°F °C

20 -7 46,218

25 -4 39,913

30 -1 34,558

35 2 29,996

40 4 26,099

45 7 22,763

50 10 19,900

55 13 17,436

60 16 15,311

65 18 13,474

70 21 11,883

75 24 10,501

80 27 9,299

85 29 8,250

Temperature Resistance

°F °C

90 32 7,334

95 35 6,532

100 38 5,828

105 41 5,210

110 43 4,665

115 46 4,18 4

120 49 3,760

125 52 3,383

130 54 3,050

135 57 2,754

140 60 2,490

145 63 2,255

150 66 2,045

155 68 1,857

Temperature Resistance

°F °C

160 71 1,689

165 74 1,538

170 77 1,403

175 79 1,281

180 82 1,172

185 85 1,073

190 88 983

195 91 903

200 93 829

205 96 763

210 99 703

215 102 648

220 104 598

225 107 553

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Tekmar 084 Indoor Sensor Manual de usuario Pagina 3

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