Sensor Unit - Cable Gland Entries And Connections - ABB 7835 User Manual

7835
Hydrazine Monitor
4.6 Sensor Unit – Cable Gland Entries and Connections
The cable gland for connections within the sensor unit is located
at the top right-hand side of the case but can be transferred to
the opposite side if this is more convenient.
A 2 m (6.5 ft.) length of 4-way overall screened cable is normally
supplied for interconnecting the sensor and transmitter units;
longer lengths may be ordered separately. The interconnecting
cable is routed to a terminal block in a electrical connection box
on the inside of the case door – see Fig. 4.6. Push one end of
the cable through the cable gland in the sensor unit case and
then the junction box, prepare the cable end and connect it to
Constant Head Unit
Sample Flow
Adjustment
Calibration Solution
Flow Adjustment
Sensor & Thermistor
Connector Assembly
Liquid Handling
Panel
Sensor Drain Tube
Hydrazine Sensor
Mixing Coil
Reagent Dosing
Chamber Outlet
Support Bracket
Reagent Dosing
Chamber
Terminal Box Connections
B 0V
R 24V
SCR Screen
G Tx/Rx +
W Tx/Rx –
7 24S
8 S
31 Hydrazine Sensor +
32 Hydrazine Sensor –
33 Pt1000 Temperature Sensor
35 Pt1000 Temperature Sensor
Fig. 4.6 Sensor Unit Cable Gland Entries and Electrical Connections
IM/7835–EN Rev. P
Boyle-Mariotte Tube
and Outlet Valve
Reagent Dosing
Chamber
Drain
Reagent Inlet
Reagent Dosing
Chamber – Sample Inlet
Transmitter
Black
Red
–
Green
White
Solenoid Valve
Solenoid Valve
Red
Blue
Yellow
Black
the terminal block as shown in Fig. 4.6. Tighten the cable
glands. If the gland in the case has been transferred to the
left-hand side, support the cable using the two cable ties
provided.
Make earth (ground) connections to the stud terminal on the
bottom of the transmitter unit.
Filler Cap
Split Drain Tundish (Separate
Clean and Contaminated Drains)
To
B R SCR
G W
To Solenoid Valve
4 Electrical Installation
Boyle-Mariotte
Tube and Outlet
Valve
Filler Cap
Reagent
Solution
Container
Calibration
Solution
Container
Terminal Box
Sample Inlet
Tool
(Dosing Chamber)
Three Way
Solenoid Valve
7
31 33 35
8
32 34 36
To Sensor
11