Model DMM7510 7½ Digit Multimeter User's Manual
Section 7: Sampling temperature at a set time interval
DMM7510-900-01 Rev. B / May 2015
7-3
To prevent electric shock, test connections must be configured such that the user cannot
come in contact with test leads or any device under test (DUT) that is in contact with the
conductors. It is good practice to disconnect DUTs from the instrument before powering the
instrument. Safe installation requires proper shields, barriers, and grounding to prevent
contact with test leads.
There is no internal connection between protective earth (safety ground) and the LO
terminals of the Model DMM7510. Therefore, hazardous voltages (more than 30 V
rms
) can
appear on LO terminals. This can occur when the instrument is operating in any mode. To
prevent hazardous voltage from appearing on the LO terminals, connect the LO terminal to
protective earth if your application allows it. You can connect the LO terminal to the chassis
ground terminal on the front panel or the chassis ground screw terminal on the rear panel.
Note that the front-panel terminals are isolated from the rear-panel terminals. Therefore, if
you are using the front-panel terminals, ground to the front-panel LO terminal. If using the
rear-panel terminals, ground to the rear panel LO terminal.
Sample temperatures at a specific time interval
This application demonstrates how to use the Model DMM7510 to measure temperature at fixed time
intervals using commands sent over a remote interface. You can make the measurement using SCPI
code or TSP code. For information about setting up remote communications, see Remote
communications interfaces.
For this application, you will:
•
Reset the instrument.
•
Configure the instrument to measure a temperature using a RTD type PT100.
•
Enable detection of open leads and offset compensation for more accurate readings.
•
Set up a timer to make a temperature measurement every 60 seconds for 1440 times (24 hours)
using a trigger model.
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