Hach-Lange ORBISPHERE KM1100 Basic User Manual - Manual (Page 11)

Measurement board
Figure 5 Measurement board
Figure 6 Connector J7
Connector J7 (inputs & outputs)
The numbers listed below refer to the 16 available J7 connections (from left to right) in
Figure 6 .
Measurement alarms relays:
1. Common
2. Output relay 1
3. Output relay 2
4. Output relay 3 Analog current outputs:
5. GND
6. Output 1
7. Output 2
8. Output 3
Digital inputs:
9. to 16. Not used
Measurement alarm relays
The three output relays are located on the measurement board.
They can be individually configured to Normally Open (NO) or to Normally Closed (NC) by
physically moving the jumper on each relay. On the illustration:
• Upper relay is set to NC
• Middle relay is set to NO
• Lower relay is shown with no jumper
Note: J14 is relay 1, J18 is relay 2, J19 is relay 3
Sensor installation
Sensor positioning
The sensor must be installed in a socket or flow chamber that allows contact with the sample fluid to
be analyzed. The sensor and measuring instrument are connected by a cable. The standard sensor
cable lengths are 3, 5, 10, 15 and 20 meters. Ensure that the sensor will be mounted:
• perpendicular to the pipe
• on a horizontal pipe section (or on flow-ascending vertical pipe)
• minimum of 15 meters away from the pump's discharge side
English 11