Checking The Cable Specification; Cleaning Options; Siting; Operating Limits - ABB 7651 Instruction Manual

...2 PREPARATION
2.3 Checking the Cable Specification – Fig. 2.3
Check that cable length and termination is correct for the types
of electrode system being used – see Table 2.1 and Fig. 2.3.

2.4 Cleaning Options

The following methods of cleaning are available:
• Flow powered
• Ultrasonic
• Mechanical wiping
For assembly instructions refer to the appropriate instruction
manual (part no. IM/7600–CLN).
A – Redox (ORP) and Manual
Temperature Compensated Systems
Used only on
4530/40 or 9180
(Cut back on other
instruments)
B – pH Systems with Automatic
Temperature Compensation
Fig. 2.3 Cable Termination – Electrode Connections
6
Red (Measuring Electrode)
Black (Reference Electrode)
Red
(Measuring Electrode)
Blue
(Temp. Comp.)
Black
(Reference Electrode)

3 MECHANICAL INSTALLATION

Caution.
• Ensure that the system cable is fed through the
electrode system cover (or dip tube) before the
cable is installed. To avoid the risk of damp or
corrosive air damaging the cable plugs, connect to
the electrodes as soon as possible.
• It is essential that fitted electrodes remain wet. If
there is loss of sample the fitted electrodes remain
serviceable while there is sample in the flowcell.
This may last for about a week depending on
prevailing climatic conditions. If it appears that
electrodes are drying out, periodically check and
top up the flowcell reservoir with clean water or
buffer solution.

3.1 Siting

3.1.1 Operating Limits

Model 7651 (Flow Type) see Fig. 3.1A for details
pH range:
Operating temperature range:
Maximum operating temperature:
Maximum operating pressure
at 25°C (77°F):
Model 7652 (In-line Type) see Fig. 3.1B for details
pH range:
Operating temperature range:
Maximum operating temperature:
Maximum operating pressure
at 25°C (77°F):
Model 7654/5/6 (Dip Type)
pH range:
Operating temperature range:
Maximum operating temperature:
Maximum operating pressure
at 25°C (77°F):
Model 7660 (Flow Type)
pH range:
Operating temperature range:
Maximum operating temperature:
Maximum operating pressure
at 25°C (77°F):
Model 7661 (Flow Type) see Fig. 3.1C for details
pH range:
Operating temperature range:
Maximum operating temperature:
Maximum operating pressure
at 25°C (77°F):
Model 7664/5 (Dip Type)
pH range:
Operating temperature range:
0 to 14
0 to 100°C (32 to 212°F)
100°C at 2.1bar (212°F
at 30psi)
10.6bar (150psi)
0 to 14
0 to 70°C (32 to 158°F)
70°C (158°F), with no
pressure
2.6bar (37psi)
0 to 14
0 to 80°C (32 to 176°F)
80°C at 2.8bar (176°F
at 40psi)
2.8bar (40psi)
0 to 14
0 to 100°C (32 to 212°F)
100°C at 2.1bar (212°F
at 30psi)
0.3bar (5psi)
0 to 14 (0 to 11 at elevated
temperatures)
0 to 110°C (32 to 230°F)
110°C at 1.7bar (230°F
at 25psi)
6.6bar (95psi)
0 to 14
0 to 110°C (32 to 230°F)