BAPI 50K Thermistors Catalog Page

50K Thermistors - D

D

Termination and Troubleshooting

9539_ins_50k_temp_therm

Printed July 25, 2005

Termination

Thermistors and RTDs are resistive elements, and therefore, are NOT polarity sensitive. BAPI recommends
using twisted pair wire of at least 22 AWG for all wire connections. BAPI also recommends that wiring
for these units not be run in the same conduit as line voltage wiring or with wiring used to supply highly
inductive loads such as motors, generators, and coils.

Use the sealant filled connectors provided for all lead wire connections. To properly use the sealant filled connectors,
strip off at least 1/4” of insulation from each wire and lay the bare ends next to each other (do not twist together.).
Push the sealant filled connectors(SFC) over the two wires, and twist them to make the connection.

Troubleshooting

Problems:

Temperature sensor in front end software is reading
high

Temperature sensor in front end software is reading
low

Lead Wire Color

T herm istor

50 K

Sensor Output Table

°F °C 50 K

Ω

W hite /B lu e

°F °C 50 K °F °C 50 K

Possible Solutions:

- Confirm the input is set up correctly in
the front end software

- Check wiring for proper termination

- Verify the “Sensor” output is correct
from the “White” to “Blue” wire
Refer to table below for proper reading

- Determine if the thermistor appears physically open

- Check wiring for proper termination

- Verify the “Sensor” output is correct
from the “White” to “Blue” wire
Refer to table below for proper reading

50.0 10.0

55.0 12.8 90,296 72.0 22.2 56,991 84.0 28.9 41,775

60.0 15.6 78,647 74.0 23.3 54,076 86.0 30.0 39,714

62.0 16.7 74,473 76.0 24.4 51,327 88.0 31.1 37,768

64.0 17.8 70,545 77.0 25.0 50,000 90.0 32.2 35,927

66.0 18.9 66,847 78.0 25.6 48,711 95.0 35.0 31,745

68.0 20.0 63,364 80.0 26.7 46,265 100.0 37.8 28,102

103,903 70.0 21.1 60,083 82.0 27.8 43,955

Specifications subject to change without notice.