Hach SC4500 Instructions D'utilisation page 6

Notes:
• Make sure that the controller is compatible with the 4–20 mA analog input module. Contact
technical support.
• To keep the enclosure rating, make sure that all unused electrical access holes are sealed with an
access hole cover.
• To maintain the enclosure rating of the instrument, unused cable glands must be plugged.
• Connect the module to one of the two slots on the right side of controller. The controller has two
analog module slots. The analog module ports are internally connected to the sensor channel.
Make sure that the analog module and the digital sensor are not connected to the same channel.
Refer to Figure 2.
Note: Make sure that only two sensors are installed in the controller. Although two analog module ports are
available, if a digital sensor and two modules are installed, only two of the three devices will be seen by the
controller.
Figure 2 mA input module slots
1 Analog module slot—Channel 1
6 English
2 Analog module slot—Channel 2