1 INTRODUCTION
1.1 OVERVIEW
The DO7PLUS Microhmmeter is a high accuracy instrument designed for industrial and
laboratory resistance measurements. Its rugged case and robust construction ensures that
accurate and reliable measurements are delivered even under the harshest of environments.
The DO7PLUS is a true four wire measuring instrument eliminating the need to compensate
for lead resistance. The measured value is displayed in large characters with decimal point
and units k
Ω
,
Ω
, or m
Ω
. For maximum accuracy the measuring current may be automatically
reversed and the average of measurement displayed. For measurements on unstable
samples, a rolling average filter is available.
Resistance measurement accuracy is typically 0.05% (1 year specification) and the value may
be displayed with or without temperature compensation.
The front panel measurement connections are made via 4mm sockets located on the front
panel. The connection to a Pt100 temperature sensor is made with a Micro Buccaneer 400
series connector. For remote control both USB and RS232 interfaces are available which will
also enable the instrument firmware to be updated from a PC.
The included data log function has the ability to display logged values in a table or graphical
format and notes may be added to each logged value. The DO7PLUS also has the facility to
automatically measure and calculate cooling curves displaying in both graphical and numeric
formats. This makes the DO7PLUS the ideal instrument for machine testing.
Hi/Lo limits are a standard feature
Operating Instructions
Digital Microhmmeter Type DO7 PLUS
4
