Metria M21 - Connector; Installing the Electrode Holder; Adjusting the electrode arm

• Decrease value or scroll down through the menu option.
• Confirm the calibration, setting or displayed option.
4
Overview
Connector
No.
Name and Icon
Description
1
pH/ISE
Use for pH or ORP electrode
2
REF
Use for reference electrode
3
ATC
Use for temperature probe
4
Use for power adapter
Installing the Electrode Holder
Take out the electrode arm from the accessory box. The base plate of the electrode holder has a circular hole, the electrode arm
has a connecting rod. Insert the connecting rod into the circular hole and swivel the electrode arm 90°. Electrode holder is now
ready to swing into desired position.
Adjusting the electrode arm
After installation, if the electrode arm automatically rises or falls, you need to adjust the screw until arm locate at any position.
1. Remove the plastic cover from the right side of the electrode arm.
2. Use the screwdriver to tighten the screw moderately.
3. Insert the plastic cover to previous position.