Compressed Air Connection; Mains Power Supply - Hach POLYMETRON 8811 Manuel D'utilisation De Base

Figure 1 Hydraulic layout of the sequencer
1 Electronic unit
2 Outputs (cable gland Pg7): analog outuputs,
interface outputs, alarms. Ca
3 Serial interface cable
4 Mains connection (cable gland Pg9)
5 Compressed air to the NO and NC valves
6 Compressed air inlet connector (one inlet for all
channels)

Compressed air connection

The sample valve requires dry and filtered compressed air supplied at a pressure from 4 to 7 bar.
The pressurized air should be supplied through a suitable tubing of 4/6 mm.

Mains power supply

Electrocution hazard. Always remove power to the instrument before making electrical connections.
Electrocution hazard. Protective Earth Ground (PE) connection is required.
Electrical shock and fire hazards. Make sure to identify the local disconnect clearly for the conduit
installation.
Potential Electrocution Hazard. If this equipment is used outdoors or in potentially wet locations, a
Ground Fault Interrupt device must be used for connecting the equipment to its mains power source.
8 English
7 Pilot solenoid valve
8 Sample inlet connector
9 Sample outlet to "Fast Loop"
10 Sample outlet to analyzer
11 NC valve
12 NO valve
D A N G E R
D A N G E R
D A N G E R
W A R N I N G