GRAPHTEC GL900 - Precautions to Observe When Performing Measurement

Checks and Preparation
2-15
2.11 Precautions to Observe When Performing Measurement
Please be sure to read the following carefully in order to prevent electric shocks or shorts.
DANGER
• Do not apply voltage of 60 Vp-p or above between the analog input section and main unit (GND terminal), or
between analog input channels.
• Be sure to use only the AC adapter provided as a standard accessory. The rated power supply range for the
adapter is 100 to 240 VAC, and the rated frequency is 50/60 Hz. Do not use any other voltages.
CAUTION
Make sure that the GL900 is not pulled by signal input cables when you connect them. The GL900
may fall down if it is pulled.
Direct voltage input
Direct voltage Direct current
Shunt resistor
Example: If 4-20 mA is used, connect
a 250 Ω (±0.1%) resistor and measure
it in the 1-5 V range.
Compensation
copper wire
Thermocouple input Direct current input