B&K Precision 310 - Manual - Manual (Page 4)

GENERAL DESCRIPTION
The meter digital milli-ohmmeter is a battery operated instrument
wich supply a low current to the circuit under test, with which, stable,
accurate measurement of low resistance can be made, still, over a
wide range of values.
Resolution on the lowest range is 100µ ohm and on the highest
range, 1 ohm.
The meter has 5 measuring ranges, from 200.0milli-ohm to 2000
ohms.
Measurements are displayed on a 3½ digit custom liquid crystal
display with large digits.
This instrument is powered from batteries only ( alkaline or
rechargeable equivalent).
It has a regulated DC constant current source with current of 1mA
10mA and 100mA.
The instrument supply that current to the resistance being measured
through the C and C terminals (C being +, C being -).
1 2 1 2
The voltage drop across the resistance under test is measured by
the potential terminals P and P (P being +, P being -).
1 2 1 2
Should the current regulation drops out, the R Led will lit, indicating
C
that the resistance in the current circuit is too high. (Lowering the
current by selecting a higher resistance range can solve the
regulation.)
Should the R Led lit, that mean that the voltage measured on the
P
resistance is too high, and therefore over-range.
The resistance is measured precisely when the R and R Leds do
P C
not lit. If anyone of these leds lit, then the measurement can be
inaccurate.
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