Hioki LR8450, Instruction Manual

Page: 24 / 310

20
Configuring Input Channels
5
(For the U8554 or LR8534 Strain Unit)
Under
[Filter] , select the cutoff frequency.
Auto

, 120 Hz , 60 Hz , 30 Hz , 15 Hz , 8 Hz , 4 Hz
See the table in “Measuring strain” (p. 27) for a list of cutoff frequencies when [Auto] is selected.
When measuring instrumentation devices
• When measuring a 4-20 mA current, connect a 250
Ω
resistor between the positive and negative
input terminals.
See “Connecting voltage cables and thermocouples” in the Quick Start Manual.
• The [1-5 V] range is convenient when measuring output from 4-20 mA instrumentation devices.
• The [1-5 V] range is a range in which the lower and upper limits of the [10 V] range’s display
range are automatically set to 1 V and 5 V, respectively. If you wish to change the upper and
lower limit values, use the [10 V] range.
• The Strain Unit does not support 4-20 mA current measurement.
You can use the scaling function to convert measured voltage values to the desired values.
See “1.5 Using the Scaling Function” (p. 42).