27
(“small” display) the temperature in “°F” is also indicated. Note the
following table.
2.
Selectable special functions
The following sub-functions, according to multimeter model, are
selectable by means of the “ENTER MENU” button:
“
Æ
%” reference value measurements, “MIN/MAX” value capture,
“TIME”, “REC” record measured value, “RCLL” measured value recall,
“LMT” comparison function (VC 670 only) and “PH” peak value mea-
surement (VC 650 and VC 670 only). These sub-functions are descri-
bed in more detail in section 5.12.
5.8 Frequency measurement
a)
Switch the measuring instrument on. The initial configuration is
always AC voltage measurement in “AUTO” (automatic range selec-
tion) mode. Now press the „Hz•hfe• •Logic“ button once. The mea-
suring instrument switches to frequency measurement, recognisable
through the symbol “Hz” in the bottom left of the display and
through the display of period in ms in the left sub-display and volta-
ge in V in the right-hand sub-display. In addition the symbol “TRIG”
with “+” or “-” appears to the left beneath the measurement value.
b)
Connect the black test lead to the “COM” measuring instrument
socket and the red test lead to the „V•
½
•Hz•Logic•->I-“ socket.
c)
The bar graph beneath the measured value is active during measu-
rement, being similar to an analogue indicator with a faster reaction
time. The bar graph operates as a trend indicator.
AUTO
¡
C
¡
F
TEMP
0
+10
+20
26
measuring set is available optionally and is therefore not among the
standard items supplied. If no thermocouple is connected to the
measuring instrument, the current room temperature is automatically
measured and displayed (in °C and °F).
To perform a temperature measurement, proceed as follows:
a) Switch the measuring instrument on. The initial configuration is
always AC voltage measurement in “AUTO” (automatic range selec-
tion) mode. Now press the “mA•TEMP•A” button three times. The
measuring instrument switches to temperature measurement, reco-
gnisable through the symbol “TEMP” at the bottom right of the dis-
play and by the display of the temperature in degrees C and in the
sub-display in degrees F.
b) Insert the thermocouple plug correctly polarised (smaller and wider
contacts) into the temperature adapter and connect this correctly
polarised (observe “+” and “-”) into the “COM” (=“-“) and
„mA•TEMP• „
(=“+“) sockets.
c) The bar graph beneath the measured value is active during measure-
ment, being similar to an analogue indicator with a faster reaction
time. The bar graph operates as a trend indicator.
d) Connect the thermocouple probe to the voltage-free object to be
measured. Hold the temperature probe on/in the object to be measu-
red until the DMM display has stabilised (approx. 30 s).
Attention!
Do not connect any voltages. The instrument can be destroyed by this.
Note !
1.
During temperature measurement, in addition to the measured
value and the bar graph in the bottom right of the sub-display
