TA-5 Temperature Sensor

Connection Diagram for TA-5 Temperature Sensor When Used With M-1000

Channel 3 on the M-1000 is used for the temperature sensor. After proper connection, program the meter to enable temperature compensation. Also program the low and high current/voltage distances.

When used with other controllers at 25° C the TA-5 delivers 2.98 volts. There is a 10mV change per degree centigrade, input voltage is 6-30VDC. The output of the TA-5 has a 1K series resistance. A 100K or greater resistance would then be desirable at the analog input card for linear stability.

C(9/5) + 32 = F°

Example:

1. Take a voltage reading (298 Kelvin is 25° C) 

2. Subtract 2.73 volts (273 Kelvin is 0° C) 

2.98 - 2.73 = 0.25

3. Multiply by 100 to change to centigrade

.025 x 100 = 25

4. The result is in degrees centigrade

25 x 9 = 225

5. Divide by 5° + 32 will change degrees centigrade to degrees fahrenheit

(225 ÷ 5) + 32 = 77