Keithley 3730 User Manual

Section
5: Basic Digital Multimeter (DMM) Operation Series 3700 System Switch/Multimeter
User's Manual
5
-42 Document Number: 3700S-900-
01 Rev. A / August 2007
Of all the temperature transducers, the thermistor is the most sensitive. It can detect minute
changes in temperature. It is a good choice when measuring slight changes in temperature. The
downside for this increased sensitivity is the loss of linearity. Since they are especially non-linear
at high temperatures, it is best to use them for measurements below 100°C.
NOTE Curve fitting constants are used in the equation to calculate thermistor temperature.
The thermistor manufacturer’s specified curve fitting may not be exactly the same as
the ones used by the Series 3700.
Thermistor connections
A thermistor can be connected directly to the analog backplane connector (or to any of the
applicable input channels of a thermistor capable switching module).
Figure 5-26: Thermistor analog backplane connection
Figure 5-27: Thermistor switching module connection
Thermistor measurement configuration
To configure thermistor measurements from the front panel:
1. If needed, change to the temperature function ("TMP" is displayed) by pressing the FUNC
key.
2. Press the CONFIG key and then the DMM key. The "TEMP ATTR MENU" will open.
3. Set units of measurement degrees:
 Turn the wheel to scroll to the "UNITS" menu item (right most menu item) and press the
ENTER key.
 Turn the wheel to select desired units (Celsius, Kelvin, or Fahrenheit) and press the ENTER
key.

Keithley 3730 Specifications

General

Brand	Keithley
Model	3730
Category	Multimeter
Language	English