Hioki DT4254 - Functions and Features

7
Functions and Features
Display refresh rate
Relative display
Maximum/minimum
value display
Decibel conversion
Magnetic strap frees both hands
for work
Measure output voltage on the
secondary sides of inverters
Measure very low currents used by
gas-burning devices
Manage measurement data on a
computer
Percentage display for
instrumentation signal measurement
Automatically hold display values
and save results with one touch to
the DMM’s internal memory
Ripple voltage conrmation of DC
charging systems
Intuitive notication of continuity check
results and excessively high input with
a red screen backlight and beep
Peak value measurement / DC + AC voltage
measurement
DC μA range
4 to 20 mA / 0 to 20 mA percentage-
equivalent display
By using the magnetic strap to secure the
instrument to the wall, you can free both
hands so that you can more easily record
measured values, signicantly boosting work
efciency.
Accurately measure the fundamental wave
alone by eliminating harmonic components with
the DMM’s low-pass lter function.
High-end models provide a DC 600.00 μA
range for measuring burner ame currents.
Measurement results can be downloaded to
a computer via a USB connection. Once
downloaded, you can save them as a le
(text format) or display them as a graph
using the desired interval. Results can also
be sent in real time while measurement is
ongoing.
You can check percentage-equivalent
values.
*The computer and multimeter are electrically
isolated by means of optical communications so
that data can be sent with peace of mind.
The display is automatically held once the
measured value stabilizes. You can save
measurement results to the instrument’s
internal memory simply by pressing the
MEM key, making it easy to read and record
values during inspection work.
High-end models can detect ripple voltage
with a superposed DC signal.
High-end models notify the operator of continuity
check results and excessively high input with a
red screen backlight and beep, making it
possible to check measurement results intuitively.
Change the display
refresh speed to
stabilize the display
when performing
measurement
characterized by a high
level of variability.
View relative values
using the display value
before the relative
function was enabled as
the reference.
Check the maximum and
minimum measured
values shown on the
display after pressing
the MAX/MIN button.
Convert the results of AC
voltage measurement to a
decibel value relative to a
reference value and
display the results (dbm/
dbv).
Input
waveform
114.1 V 85.9 V 100 V
100.49 V DC + AC measurement*
114.10 V+Peak measurement
85.90 V-Peak measurement
Using the magnetic strap (option) Using the Communication Package DT4900-01 (option)
Temperature
Pressure
Flow rate
Transducer
Continuous state Excessively high input
With low-pass lter off With low-pass lter on
Fundamental component
Harmonic component
++
0 V 0 V
*DC + AC value = (AC)
2
+ (DC)
2
√
Output 1 Display
4 mA 0%
20 mA 100%
Output 2 Display
4 mA 0%
20 mA 100%
Fundamental component
Harmonic component
++
Burner
Flame sensor
rod
Insulator
Control
board