Hach-Lange POLYMETRON 9500 Basic User Manual - Manual (Page 6)

Figure 1 System components
1 Controller 4 Network module (optional)
2 Cable gland assembly 5 High-voltage barrier
3 Additional connection fitting 6 Sensor modules (optional)
Sensors and sensor modules
The controller accepts up to a maximum of two sensor modules along with one communication
module. A variety of sensors can be wired to the sensor modules. Sensor wiring information is given
in the specific sensor manuals and in the user instructions for specific modules.
Relays, outputs and signals
The controller has four configurable relay switches and two analog outputs. An optional analog
output module can increase the number of analog outputs to five.
Device scans
With two exceptions, the controller automatically scans for connected devices without user input
when it is powered on. The first exception is when the controller is powered on for the first time
before initial use. The second exception is after the controller configuration settings have been set to
their default values and the controller is powered on. In both cases, the controller first displays the
language, date and time edit screens. After the language, date and time entries are accepted, the
controller performs a device scan.
Controller enclosure
The controller enclosure is NEMA 4X/IP66-rated and has a corrosion-resistant finish designed to
withstand corrosive environmental constituents such as salt spray and hydrogen sulfide. Protection
against environmental damage is strongly recommended for outdoor use.
Note: Units that have the Underwriters Laboratories (UL) certification are intended for indoor use only and do not
have a NEMA 4X/IP66 rating.
Controller mounting options
The controller can be mounted to a panel, to a wall or to a vertical or horizontal pipe. A neoprene
sealing gasket is included and can be used to reduce vibration. The gasket can be used as a
template for panel mounting before the inner gasket component is separated.
6 English