ABB Navigator 550 Quick start guide

Brand: ABB

Model: Navigator 550

Type: Quick start guide

—

ABB MEASUREMENT & ANALYTICS | INFORMATION | INF13/124-EN REV. B

Navigator 550

Low level dissolved oxygen wet-section

Sensor assembly spares

replacement procedures

Measurement made easy

1 Introduction

These procedures must be carried out by a trained

technician.

2 For more information

Further information is available from:

www.abb.com/analytical

or by scanning these codes:

Sales Service

Navigator 550

low level dissolved

oxygen wet-section

2 NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

3 Safety

WARNING

These procedures must be carried out by a trained

technician.

ELECTRICAL

• Isolate all high voltage supplies to the transmitter before

performing replacement procedures.

• The wet-section is vulnerable to electrostatic damage.

Wear an anti-static strap or dismantle the wet-section on

an anti-static workbench.

• Ensure all electrical connections are kept dry at all times.

GENERAL

• Shut off the external sample supply to the wet-section

and drain the flowcell – refer to the wet-section Operating

instructions (OI/ADS550-EN) for flowcell drainage

options.

• When a procedure is complete, restore power to the

transmitter and sample to the wet-section at the correct

flow rate.

• If necessary, calibrate the wet-section – refer to the wet-

section Operating Instructions (OI/ADS550 -EN) for

calibration instructions.

• Perform general cleaning of the wet-section using a damp

cloth only – mild detergent can be used as a cleaning aid.

Do not use Acetone or any organic solvents.

• Dispose of the old components in accordance with the

guidelines contained in the Operating instructions

(OI/ADS550-EN).

4 Disposal

WARNING

Dispose of the old components in accordance with the

guidelines contained in the Operating instructions

(OI/ADS550-EN).

5 Dissolved oxygen sensor

assembly location

Sensor contained

within flowcell

Figure 1 Low level dissolved oxygen sensor location

NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

6 Replacing the dissolved

oxygen sensor

Part number: low level dissolved oxygen sensor assembly

(AW502 080)

Removing the dissolved oxygen sensor

assembly

Referring to Figure 2:

1 Disconnect (red) sensor connector A.

2 Unscrew clamping screw B and withdraw the sensor

assembly from flowcell body C.

3 Carefully unscrew connector nut G from sensor D and

withdraw connector body E.

4 Remove and discard O-rings F and H.

Figure 2 Removing the dissolved oxygen sensor assembly

4 NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

…6 Replacing the dissolved oxygen sensor

Fitting a new dissolved oxygen sensor assembly

CAUTION

• Only install the sensor immediately prior to use. The

sensor has a limited shelf life and, ideally, should NOT be

stored longer than 6 months. Store under cool conditions.

• Take special care to line up the two pins in the sensor with

their respective sockets before making the connection

and tightening.

• Take care not to damage the delicate membrane on the

face of the sensor.

• Ensure that the mating surfaces (carrying the electrical

connection) of the sensor and connector body are clean

and completely dry.

• Do not overtighten the clamping screw.

1 Remove the top from the new sensor container.

2 Unscrew the protective cap from the rear of the sensor.

Referring to Figure 3:

3 Fit the smaller of the 2 new O-rings A (¾ in. ID) onto the

connector body B.

4 Locate sensor C onto connector body B, ensuring the pins

and sockets are engaged correctly and tighten connector

nut D onto sensor C.

5 Insert the complete assembly into flowcell E, ensuring the

larger of the 2 new O-rings F ( in. ID) is fitted.

6 Screw in clamping screw G using finger-pressure only to

secure the dissolved oxygen sensor assembly in the flowcell

body.

7 Push (red) sensor connector H onto sensor connector block I

firmly and tighten ONE TURN clockwise.

Note. Wet-section enclosure,

oxygen sensor container and

protective cap not shown for

clarity.

Pt1000 temperature

compensator

connector (blue)

Sensor shown

fitted

Optional flowmeter (if fitted)

O-ring  in ID

O-ring ¾ in ID

Figure 3 Fitting and connecting the dissolved

oxygen sensor at the flowcell

NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

Notes

6 NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

…Notes

NAVIGATOR 550 | LOW LEVEL DISSOLVED OXYGEN WET SECTION | INF13/124-EN REV. B

INF13/124-EN Rev. B 11.2019

—

We reserve the right to make technical changes or modify the contents of this document

without prior notice. With regard to purchase orders, the agreed particulars shall prevail.

ABB does not accept any responsibility whatsoever for potential errors or possible lack of

information in this document.

We reserve all rights in this document and in the subject matter and illustrations contained

therein. Any reproduction, disclosure to third parties or utilization of its contents – in

whole or in parts – is forbidden without prior written consent of ABB.

—

ABB Limited

Measurement & Analytics

Oldends Lane, Stonehouse

Gloucestershire, GL10 3TA

Tel: +44 (0)1453 826661

Fax: +44 (0)1453 829671

Email: instrumentat[email protected]

ABB Inc.

Measurement & Analytics

125 E. County Line Road

Warminster, PA 18974

USA

Tel: +1 215 674 6000

Fax: +1 215 674 7183

abb.com/measurement

ABB Navigator 550 Quick start guide

ABB Navigator 550 Quick start guide

ABB Navigator 550 Quick start guide

Related papers

Other documents