What is Hach's solution for integrating an SC200 with a Digital Termination Box for long distance sensor wiring?

Document ID

Document ID TE4710

Version

Version 3.0

Status

Status Published

Published Date

Published Date 25/01/2018
Question
What is Hach's solution for integrating an SC200 with a Digital Termination Box for long distance sensor wiring?
Summary
SC200, Digital Termination Box for long distance sensor wiring
Answer
If the standard digital sensor extension cables. available in 25' (Catalog Number/ Order Code 5796000), 50' (Catalog Number/ Order Code 5796100), and 100' (Catalog Number/ Order Code 5796200) lengths are not sufficient, the following is an option that may help satisfy the installation needs:

A digital termination box (Catalog Number/ Order Code 5867000) as shown below can be placed at the end of the integral sensor cable and used to connect a bulk 4-wire shielded cable sufficient to reach the SC200 controller (please refer to the specifications in the sensor user manual for specific distance limitations).



When an SC200 controller is ordered with either one or two digital sensor connections, the original shipping carton will include an equal number of packages of "KIT, CONDUIT WIRING, sc200" (Catalog Number/ Order Code 9222400).  This kit  contains four small splice connectors similar to the diagram below:



Please refer to the attached instruction sheets "Sensor Connections using Conduit to SC200.pdf", and "Sensor connections using Digital Termination Box Instructions_2ed.pdf" for specific instructions related to the recommended use of the connectors and digital termination box.

It is important to note, that the digital termination box should not be used with the SC1000 controller as communication errors will result.  On an SC1000 network, cable extensions should be avoided/eliminated by "nesting" probe modules near sensor installation locations and networking multiple probe modules to accommodate longer distances between tanks.  Refer to the sc1000 Universal Controller User Manual  (section 3.7 on page 38 - 43) and the diagram below:

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