Hach ORBISPHERE 410, User Manual, Page: 32 / 98

31
Installation
Note:
To change the type of sensor (e.g. from a 31xxx sensor to a 31xxxS smart sensor) contact your local
Hach Lange representative.
3.8 Measurement alarm relays
Connector J8 (sensor)
Note:
Remember, this connector is colored orange for EC sensors and black for TC sensors.
A1100 EC sensor 31xxx EC sensor
31xxxS smart EC
sensor
TC sensor
Cable
sensor
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Guard electrode
Thermistor A
Anode electrode
RS485B-
Thermistor B
GND
+ 5V
Cathode electrode
Not used Guard electrode
Not used
Thermistor A
Anode electrode
Not used
Thermistor B
Not used
Not used
Cathode electrode
Not used Guard electrode
I2C-SCL
Thermistor A
Anode electrode
I2C-SDA
Thermistor B
GND
+ 5V
Cathode electrode
Not used GND for power
V2 signal
Solenoid
Relay coil
+12V power
+24V power
V3 signal
GND for signal
-5V power
Temperature Yellow
Pink
Grey
Red
Purple
White
Black
Green
Blue
Brown
Figure 17 Output Relays
The three output relays are located on the measurement
board (refer to
Figure 13 and Figure 14 on page 30 ).
They can be individually configured to Normally Open (NO) or
to Normally Closed (NC) by physically moving the jumper on
each relay. The picture example on the left is for the EC
measurement board (the positions are different for the TC
measurement board):
•
Upper relay is set to NC
•
Middle relay is set to NO
•
Lower relay is shown with no jumper, to show the 3 pins.
Note:
For all measurement boards, J4 is relay 1, J5 is relay 2 and J6
is relay 3