Sample Requirements; Mounting The Wet-Section - ABB Navigator 550 Commissioning Instructions

1

Sample requirements

The sampling point should be as near as possible to the wet-section
and must provide a thoroughly mixed representative sample.
The sample must conform to the following conditions:

Sample must contain less than 10 ppm suspended solids with
a particle size no greater than 60 µm.
(If particle sizes exceed 60 µm, use a 60 µm filter.)

Sample temperature must be within the range 5 to 55 °C
(41 to 131 °F).

Sample flow rates must be within the range 100 to
400 ml/min (6.10 to 24.4 to cu in./min.).

Sample must be at atmospheric pressure.
2
Locating the wet-section
Caution. This equipment will be damaged if subjected to
freezing conditions.
Referring to Fig. 1:
1. Locate the wet-section / transmitter indoors in a clean, dry,
well-ventilated, easily-accessible area.
2. Do not locate in rooms containing corrosive gases or vapors –
for example, with chlorination equipment or chlorine gas
cylinders.
3. Select a location not subject to strong electrical and magnetic
fields. If this is not possible (for example, where mobile
communications equipment is present), use screened cables
within flexible, earthed, metal conduit.
Maximum cable distance – transmitter to
wet-section 30 m (98 ft.)
0 °C
(32 °F)
Min.
Navigator 500
Avoid vibration
Fig. 1 Locating the wet-section
4
55 °C
Navigator 500
(131 °F)
Max.
IP54
Humidity
0 to 95 %
3

Mounting the wet-section

Refer to Fig. 2 for wet-section dimensions. The wet-section weighs
4.5 kg (10 lb), excluding solutions.
Note. Clearance – the enclosure doors can open 180°. If
mounting in a confined area, allow sufficient clearance for door
opening.
Referring to Fig. 2:
1. Mark the wall using the dimensions shown.
2. Drill and plug 3 holes
1
or / in. fixings.
4
A
3. Screw in top fixing
between the fixing head and the wall.
A
Note. Fixing
wet-section is placed over it.
4. Hang the wet-section onto fixing
wet-section is retained firmly against the wall.
5. Secure the wet-section to the wall using 2 fixings
Dimensions in mm (in.)
290 (11.41)
Ø 7 (0.27)
385
(15.16)
2 Holes Ø 7
(0.27)
210 (8.27)
Fig. 2 Mounting the wet-section
A B
and in the wall suitable for M6
, leaving a gap of 20 mm (0.78 in.)
cannot be adjusted once
A
, ensuring the
B
480
(18.90)
80.2
(3.15)
185 (7.28)
281 (11.06)
Allow sufficient clearance for
the door to open fully
CI/AHM550–EN Rev. D
the
.