On Sat, 19 Jan 2008 13:57:04 -0000, "N Cook" wrote:

:Can anyone improve on the following especially reducing, even further, the
:chance of mistakingly using a meter set for current monitoring on live kit ,
:thinking you are measuring voltage.
:
:Assuming others here are like me, rarely use the current function of a
VM/DMM.
:Leave a gummy bright or contrasting sticker over the ammeter socket of the
:meter. When transfering the red lead to that socket then transfer the label
:to the function or on/off switch.
:
:The ideal would be some sort of mechanical interlock but I cannot see how.


Gossen Metrawatt meters have the interlock function. If you have the RED lead in
the normal V/Ohms socket the current measurement sockets are blanked off with a
red plate. You can't select the current ranges on the range switch until the RED
lead is unplugged. If you have the RED lead in one of the current measuring
sockets (mA or A) the range switch can't be moved to any other position. Of
course this doesn't stop you from trying to measure voltage while it is set up
for current measurement but I find that I always check for range setting before
connecting to equipment and because the switch won't move to any other position
this has always prevented mishaps.