Performing Setup3 (Rtd) - GRAPHTEC GL820 Service Manual

4.5 Performing Setup3 (RTD)

Preparation
• Have reference resistors to setup RTD.
Reference resistors: 0 Ω (Short), 350 Ω ±0.01%, 2500 Ω ±0.01%
• As shown below, use reference resistors to connect the CH20.
• Set the AC Line cycle setting of the GL820 to the same cycle as that of your AC line.
Wiring connection
Connect to the GND
GL820-UM-251-9370
AC adapter
4-12
4. SETUP PROCEDURES
Reference resistors:
(1) 0 Ω (Short)
(2) 350 Ω ±0.01%
(3) 2500 Ω ±0.01%
(-)
(b) (+)
Connect to the CH20 input terminals.