Thermo Fisher Scientific Alpha COND 550 - Manual (Page 11)

Instruction Manual
Alpha-
COND 550
5
2.3 Connecting Peripherals
2.3.1 Connection Terminals
Remove Back Cover:
Remove the screws from the four corners at the back of the conductivity
monitor. Remove the back cover. The connectors are exposed on the back
PCBA as shown in the Figure 1 below.
Connectors:
• J11 – 24V DC power connector
• J8 – 9V DC power connector (1.2mm diameter)
• J9 – Relay connections
• J10 - Conductivity electrode & Temperature probe connections (wiring has
to be done in the detachable connector
J10
J8
9V DC Power
Screw
Figure 1: Outer Side of Back PCBA
J10 Connections
1. CON Low Current
2. CON Low Voltage
3. CON High Voltage
4. CON High Current
5. Pt 100 Compensate
6. Pt 100 Sense
7. Pt 100 GND
8. (No
connection)
24V DC
J11
J11 Connections
1. +ve
2. Gnd
1)+ve
2)Gnd