Temperature Sensor

Application

A basic Temperature Sensor using the National Semiconductor LM335Z Precision Temperature Sensor.
Model: TC-2

Features

  • Highly stable and accurate voltage reference
  • Accurate over the full temperature range

Basic Operation

This product is an LM335Z precision temperature sensitive zener with wires attached and mounted to make it easy to mount and connect to.

Typically a thermistor is used to measure temperature. Unfortunately these are very non-linear and typically have enormous errors when operated far from their 25 Deg C ratings. At least 50 % measurement errors are not the least bit uncommon.

If an error of this magnitude is controlling the charge on the battery when faced with large temperature variations, proper temperature compensation is impossible.

The LM335Z is accurate to 2 % over the entire temperature range. When connected to Solar Converters Inc. products a true temperaure measurements results over the full temperature range in true temperature compensation.

Electrical Specifications

Base Model TC-2
Nominal Battery Voltages (V) 3 V @ 10 deg C
Voltage Change with Temperature +10 mv / deg C
Temperature Range -55 to +150 Deg C

Mechanical Specifications

Weight:

  • 0.1 lb.
Size:
  • 0.5" X 0.5" X 0.25"
Connections:
  • #22 flying leads
  • Red lead is +
  • Black lead is -
Operating Temperature:
  • -40 to 60 deg. C
Humidity:
  • 0 - 90% non-condensing

Mechanical Drawing: Click here for picture

Note: In the interest of continuous product improvement specifications subject to change without notice.

Order Model No:

TC-2

March 2002