2-8
Checks and Preparation
M amplifier
This section describes the M amplifier and how to connect the input signal cable. The M amplifier is used for
voltage and temperature measurement.
33VACrms
(70Vp-p max.)
500Vp-p max.
Ranges
Up to 1V:
100Vp-p max.
M
CAT I
Low- potential input signal
High-potential input signal High-potential input signal
Low- potential input signal
Signal source
Signal source
* When using signals from thermocouples, clamp the bared wires securely.
High- potential terminal ....... Terminal for connecting the high- potential input signal
Low- potential terminal ........ Terminal for connecting the low- potential input signal
CHECKPOINT
• When measuring, connect the WR300/310 GND terminal to the signal source GND terminal. Noise will occur at the
input terminal if the GND terminals are not connected.
• Do not connect the cables with high voltage present (more than 42.4 Vp-p). There is a risk of electric shock or short
circuit if accidentally touched.
Item Description
Input format Independent unbalanced input for each channel
Measurement range Voltage: 20 mV to 500 V FS
Temperature: K, J, T, R, E, B
Max sampling interval 10 µs
Frequency response DC coupling: DC to 20 kHz
AC coupling: 10 Hz to 20 kHz
Permissible input voltage [Between +/– terminals] 5 V to 500 V range : 500 V DC (DC + ACp-p)
20 mV to 1 V range: 100 V DC (DC + ACp-p)
[Between input and GND terminals] 33 V AC rms
To Next Page
Loading...