Hioki MEMORY HiLOGGER LR8450 User Manual

384
Noise Countermeasures
Example noise countermeasures
Ensuring devices are grounded reliably
• Ground the instrument and wireless modules reliably.
You can ground the chassis by connecting the AC Adapter’s two-prong grounded-type (2-pole)
power cord to an outlet with a grounding electrode.
• Ensure the measurement target’s chassis is grounded reliably.
Ensure the measurement target’s chassis is reliably connected to a suitable ground.
Measurement module
Z
2
Z
1
V in
Device under measurement
r 1
r 2
Z
3
Thermocouple
• Power the instrument and wireless modules with batteries.
You can reduce the e󰀨ects of common-mode noise by powering the devices with batteries (without
connecting their AC Adapters) so that the earth current loop is eliminated.
HIOKI LR8450A964-03
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Hioki MEMORY HiLOGGER LR8450 Specifications

General

Storage Media	SD card (up to 32 GB)
Measurement Types	Voltage, Temperature, Resistance, Strain, Pulse, Logic
Sampling Rate	1 ms to 1 hour
Interface	LAN, USB, SD card slot
Power Supply	100 to 240 V AC, 12 V DC
Resolution	16-bit
Voltage Range	±10 mV