Hach 911 User Manual page 48

Sensor Installation
4
1 Wall/Rail Mount Bracket (Cat. No. 2974)
2 Isolation Washers (Cat. No. 6820)
46
1
2
3
Figure 24 Permanent Bracket and Isolation Washers
This surface must be level.
3 Downlook Ultrasonic Sensor
4 1 inch x 0.25 Hex Nuts (Cat. No. 1429)