DMM4040/4050
Users Manual
4-16
2. Press T to display the measured temperature as shown below.
- 246.645
º
F
F1 F2 F3 F4 F5
caw11f.eps
To change the temperature scale, refer to the “Setting the Default Temperature Scale”
section in Chapter 3 of this manual. Available scales are Celsius, Fahrenheit, and Kelvin.
Refer to the “Adjusting the Meter’s Range” section in Chapter 3 of this manual for
information on how to adjust the measurement range.
Function modifiers:
4Wire Switches the measurement input connectors to 4-wire measurement
for 4-wire RTDs. 4-wire RTDs make more accurate measurements.
RTD 385 Default RTD type. All coefficients are predefined.
RO Used to select a different value of RTD resistance at 0 °C.
ALPHA Used to set the first coefficient of the Calendar-Van Dusen equation.
2ND MEA Cycles the secondary display through the measurement functions
listed below and then off.
OHMS - Displays the resistance of the RTD. 2-wire resistance is used
when in 2-wire temperature mode and 4-wire resistance when the
Meter is in 4-wire RTD mode.
Testing Continuity
Continuity testing determines whether a circuit is intact (i.e., has a resistance less than the
threshold). The threshold is selectable between 1 and 1000 Ω.
To perform a continuity test:
1. Press S on the 4050 or Q on the 4040. An example of the continuity display is
shown below.
OPEN
F1 F2 F3 F4 F5
caw12f.eps
Connect the test leads as shown in Figure 4-1.
Note
The Beeper cannot be disabled in continuity. Pressing BEEPER OFF turns
off the beeper for errors.
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