Thermo Fisher Scientific Alpha COND 550 - Manual (Page 12)

Instruction Manual
Alpha-
COND 550
6
2.3.2 Switching Between Pt100 & Pt1000 Temperature Sensors
The conductivity monitor supports both Pt100 & Pt1000 (2-wire or 3-wire)
temperature sensors. The default factory setting is Pt100. If you need to use
Pt1000 temperature sensor, you have to change the jumper setting (J7) as
described below.
Remove Back Cover:
Remove screws from the four corners at the back of the conductivity monitor.
Remove the back cover.
Remove Back PCBA:
Remove the screw located center of the back PCBA
(Figure 1). Detach the back PCBA from the monitor. Turn over the back PCBA.
Locate J7 jumper on the inner side of the back PCBA as shown in Figure 2
below.
Figure 2: Inner Side of Back PCBA
Set Jumper J7:
Set the J7 jumper to required sensor (Pt100 or Pt1000) type.