Azbil AUR450C - Flame Voltage Measurement Wiring

2-9
Chapter 2. MOUNTING AND WIRING
 Wiring for continuous measurement of flame voltage
To measure the flame voltage, remove the cover from the flame voltage terminal
and connect a signal wire to it.
Handling Precautions
•
Always use an IV cable with a size of 0.75 mm
2
or more for signal lines.
The wiring length must be 10 m or less.
•
Connect a measuring instrument to the device having an input impedance
of 100 kΩ or more and connect a pen recorder having an input impedance of
1MΩ or more.
z Removing the terminal cover
Handling Precautions
•
Do not remove the cover with your fingers. The cover may break.
Required tool: a screwdriver
(1) Insert the screwdriver between the terminal cover and terminal.
(2) Gently raise the grip of the screwdriver.
The terminal cover will come off easily.