17
Zero Adjustment
Potentiometer
Measuring
Unit
Tubing
Connections
Terminal Block (TB1)
Dummy
Remote Zero
Resistor.
Remove When
Connecting
Remote Zero.
Mounting Pillars
10
9
12
11
10
9
8
7
6
5
4
3
2
1
Inlet
Outlet
–
–
–
+
+
Caution
. The integrity of the fail-safe operation of the zener diode safety barrier devices depends on a Safety Earth
connection which must not have a resistance greater than 1 to the application plant earth (gr ound).
Make the Earth (Ground) and
Safety Earth
connection at the stud (TS1) – see Fig. 5.2.
On completion of wiring and checks, replace the outer case and secure the clamping brackets to the mounting panel.
5.1.2
Model 006540 203 and 006548 000 Katharometer Analyzer Panel
To gain access to the connection terminal block TB1:
1) Remove four screws in the cover of the katharometer unit.
2) Remove cover
Make the electrical connections to the Display Unit in accordance with the information given in wiring diagrams in Figs 5.3, 5.4 and
5.5 and Section 5.2.
The electrical connections are made at the terminal block (TB1) via the cable gland or any replacement gland to suit the intrinsically
safe wiring requirements. When the appropriate interconnections have been made, if remote zero is to be used, remove the 510
dummy remote zero resistor from across terminals 9 and 10 and set the zero adjustment potentiometer on the katharometer to the
approximate mid-point.
Replace the cover when wiring is complete.
Fig. 5.5 Location of Components Inside Case – Model 006539 and 006548 Type Katharometer Unit
5
ELECTRICAL INSTALLATION…
