Swann AMI Oxytrace, AMI Oxytrace QED Operator's Manual

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AMI Oxytrace AMI Oxytrace QED

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or’s Manual

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A-96.250.531 / 300617

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Customer Support

SWAN and its representatives maintain a fully trained staff of technical specialists around the world. For any technical question, contact your nearest SWAN representative, or the manufacturer:

SWAN ANALYTISCHE INSTRUMENTE AG Studbachstrasse 13 8340 Hinwil Switzerland

Internet: www.swan.ch

E-mail: support@swan.ch

Document Status

Title:

ID:

Monitor AMI Oxytrace QED Operator’s Manual

A-96.250.531

Revision Issue

00 Jan. 2008 First Edition

01 Nov. 2008 Including AMI Oxytrace QED

02 July 2011 Chapter Quality Assurance added

03 Oct. 2013 New mainboard V2.4, update to FW Release 5.4

04 Sept. 2016 New mainboard V2.5, update to FW Release 6.20

subject to change without notice.

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AMI Oxytrace QED

Table of Contents

1. Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1. Warning Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2. General Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2. Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1. Description of the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2. Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3. Instrument Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4. Single Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.4.1 AMI Oxytrace Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.4.2 Sensor OXYTRACE G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.3 QV-Flow PMMA OTG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.4.4 B-Flow SS316L OTG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1. Installation Check List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.2. Mounting of Instrument Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3. Connecting Sample Inlet and Outlet. . . . . . . . . . . . . . . . . . . . . . . 23

3.3.1 Swagelok Fitting Stainless Steel at Sample Inlet . . . . . . . . . . . . . 23

3.3.2 FEP Tube at Sample Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.4 Install the Swansensor Oxytrace G . . . . . . . . . . . . . . . . . . . . . . . 24

3.5. Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.5.1 Electrical Connection Diagram AMI Oxytrace . . . . . . . . . . . . . . . 27

3.5.2 Electrical Connection Diagram AMI Oxytrace QED . . . . . . . . . . . 28

3.5.3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.6. Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.7. Relay Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.7.1 Alarm Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.7.2 Relay 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.8. Signal Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.8.1 Signal output 1 and 2 (current outputs) . . . . . . . . . . . . . . . . . . . . 33

3.9. Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.9.1 Signal Output 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.9.2 Profibus, Modbus Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.9.3 HART Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.9.4 USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4. Instrument Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.1. Establish Sample Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.2. Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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AMI Oxytrace QED

5. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.1. Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.2. Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.3. Software Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.4. Changing Parameters and values. . . . . . . . . . . . . . . . . . . . . . . . . 40

6. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.1. Maintenance Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.2. Stop of Operation for Maintenance. . . . . . . . . . . . . . . . . . . . . . . . 41

6.3. Maintenance of the Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . . 42

6.3.1 Electrolyte exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.3.2 Clean Swansensor Oxytrace G and Flow Cell . . . . . . . . . . . . . . . 44

6.4. Maintenance of the Faraday electrode . . . . . . . . . . . . . . . . . . . . . 45

6.5. Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.6. Zero-Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.7. Faraday Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6.8. Quality Assurance of the Instrument. . . . . . . . . . . . . . . . . . . . . . . 51

6.8.1 Activate SWAN Quality assurance procedure . . . . . . . . . . . . . . . 52

6.8.2 Pre-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.8.3 Connect the sample lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.8.4 Carry out comparison measurement. . . . . . . . . . . . . . . . . . . . . . . 55

6.8.5 Completion of the measurement. . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.9. Replacing Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6.10. Longer Stop of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7. Error List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8. Program Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.1. Messages (Main Menu 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.2. Diagnostics (Main Menu 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

8.3. Maintenance (Main Menu 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.4. Operation (Main Menu 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.5. Installation (Main Menu 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9. Program List and Explanations. . . . . . . . . . . . . . . . . . . . . . . . . 69

1 Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

10. Material Safety Data sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

10.1. Reagents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

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AMI Oxytrace QED

11. Default Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

12. Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

13. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

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AMI Oxytrace QED

Safety Instructions

AMI Oxytrace QED Operator’s Manual

This document describes the main steps for instrument setup, operation and maintenance.

1. Safety Instructions

General The instructions included in this section explain the potential risks

associated with instrument operation and provide important safety practices designed to minimize these risks.

If you carefully follow the information contained in this section, you can protect yourself from hazards and create a safer work environment.

More safety instructions are given throughout this manual, at the respective locations where observation is most important.

Strictly follow all safety instructions in this publication.

Target

audience

OM Location The AMI Operator’s Manual shall be kept in proximity of the instru-

Qualification,

Training

Operator: Qualified person who uses the equipment for its intended purpose.

Instrument operation requires thorough knowledge of applications, instrument functions and software program as well as all applicable safety rules and regulations.

ment.

To be qualified for instrument installation and operation, you must:

 read and understand the instructions in this manual as well as

the Material Safety Data Sheets.

 know the relevant safety rules and regulations.

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AMI Oxytrace QED

Safety Instructions

1.1. Warning Notices

The symbols used for safety-related notices have the following significance:

DANGER

Your life or physical wellbeing are in serious danger if such warnings are ignored.

 Follow the prevention instructions carefully.

WARNING

Severe injuries or damage to the equipment can occur if such warnings are ignored.

 Follow the prevention instructions carefully.

CAUTION

Damage to the equipment, minor injury, malfunctions or incorrect process can be the consequence if such warnings are ignored.

 Follow the prevention instructions carefully.

Mandatory

Signs

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The importance of the mandatory signs in this manual.

Safety goggles

Safety gloves

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AMI Oxytrace QED

Safety Instructions

Warning Signs The importance of the warning signs in this manual.

Electrical shock hazard

Corrosive

Harmful to health

Flammable

Warning general

Attention general

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AMI Oxytrace QED

Safety Instructions

1.2. General Safety Regulations

Legal

Requirements

Spare Parts

and

Disposables

Modifications Modifications and instrument upgrades shall only be carried out by

The user is responsible for proper system operation. All precautions must be followed to ensure safe operation of the instrument.

Use only official SWAN spare parts and disposables. If other parts are used during the normal warranty period, the manufacturer’s warranty is voided.

an authorized Service Technician. SWAN will not accept responsibility for any claim resulting from unauthorized modification or alteration.

WARNING

Risk of Electrical Shock

If proper operation is no longer possible, the instrument must be disconnected from all power lines, and measures must be taken to prevent inadvertent operation.

 To prevent from electrical shock, always make sure that the

ground wire is connected.

 Service shall be performed by authorized personnel only.  Whenever electronic service is required, disconnect instru-

ment power and power of devices connected to. – relay 1, – relay 2, – alarm relay

WARNING

For safe instrument installation and operation you must read and understand the instructions in this manual.

WARNING

Only SWAN trained and authorized personnel shall perform the tasks described in this document.

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AMI Oxytrace QED

Product Description

2. Product Description

This manual describes the functions of the following monitors

 AMI Oxytrace  AMI Oxytrace QED

Both monitors are mainly identical except that AMI Oxytrace QED includes a faraday verification.

2.1. Description of the System

Application AMI Oxytrace is used to measure low levels of oxygen in high-puri-

ty water. Especially in power plant water cycles (e.g. feedwater), a very low level of oxygen is needed to prevent corrosion.

Measuring

principle

Clark principle: The sensor consists of one noble metal electrode (e.g. platinum or

gold), a reference electrode (mostly Ag/AgCl) and optionally a metal guard electrode.

The Clark-type electrode is the most widely used oxygen sensor for measuring oxygen dissolved in a liquid. The basic principle is that there is a cathode and an anode submersed in an electrolyte and a voltage is applied between the two parts. Oxygen enters the sensor through a permeable membrane by diffusion, and is reduced at the cathode according to

+ 4e- + 2 H2O --> 4 OH

This reaction creates a measurable current. There is a linear correlation between the oxygen concentration and the electrical current.

The guard electrode is on the same voltage level as the cathode but there is no current measurement. Oxygen which diffuses from the electrolyte to the cathode is consumed by the guard electrode. As a consequence, residual oxygen in the electrolyte will no more disturb the measurement signal and the response time to low oxygen levels will be shorter.

Temperature

compensa-

tion

The measuring signal depends on temperature, but is automatically compensated to 25 °C. The sample temperature is determined continuously by a temperature sensor inside the oxygen electrode.

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AMI Oxytrace QED

Product Description

Faraday

Verification

Dissolved Oxygen [ppm]

For AMI Oxytrace QED only. When a direct current is passed through water by means of two

electrodes, electrolysis of the liquid takes place, according to the laws of Michael Faraday. Water is converted to molecular oxygen and hydrogen.

Thus, by controlling the current, a fixed, known amount of oxygen, which is independent of temperature and pressure, may be generated. If the sample flow is known, an exact oxygen concentration increment can be generated at low levels. This increment is used to verify the flawless operation of the whole system. Thereby the response characteristics (incremental change and response time) of the sensor are taken into account. Sensor failures (loss of electrolyte etc.) can be detected very easily as shown in the plot below.

operational sensor

defective sensor

60 90 120 150 180 210 240 270 300 330

Time [Sec]

Unusual sensor performance is recognized immediately and gives also a maintenance indication to the operator/user. The faraday verification is therefore an excellent QA/QC tool.

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AMI Oxytrace QED

Product Description

Signal

Outputs

Relay Two potential-free contacts programmable as limit switches for

Alarm Relay One potential free contact.

Input For potential-free contact to freeze the measuring value or to inter-

Safety

Features

Two signal outputs programmable for measured values (freely scaleable, linear or bilinear) or as continuous control output (control parameters programmable).

Current loop: 0/4–20 mA Maximal burden: 510  Third signal output available as an option.

measuring values, controllers or timer for system cleaning with automatic hold function. Both contacts can be used as normally open or normally closed.

Maximum load: 1 A/250 VAC

Alternatively:

 Open during normal operation, closed on error and loss of

power.

 Closed during normal operation, open on error and loss of

power. Summary alarm indication for programmable alarm values and instrument faults.

rupt control in automated installations (hold function or remote-off)

No data loss after power failure. All data is saved in non-volatile memory. Over voltage protection of in- and outputs.Galvanic separation of measuring inputs and signal outputs.The analyzer is factory tested and ready for installation and operation.

Communica-

tion Interface

(optional)

 USB Interface for logger download  RS485 with Fieldbus protocol Modbus or Profibus DP.  HART interface

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AMI Oxytrace QED

Product Description

Fluidics AMI Oxytrace

Swansensor oxygen combined with QV-flow PMMA OTG flow cell. The sample flows via sample inlet [G] through the flow regulating valve [D], where the flow rate can be adjusted. Then the sample flows into the measuring cell [C] were the Oxygen concentration and temperature of the sample is measured.

The sample leaves the measuring cell via flow sensor [B] through the sample outlet [E] and the drain funnel [F].

Oxygen sensor

Flow sensor

Flow cell

Flow regulating valve

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Sample outlet

Drain funnel

Sample inlet

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AMI Oxytrace QED

Product Description

Fluidics AMI Oxytrace QED

Swansensor oxygen combined with QV-flow PMMA OTG flow cell. The sample flows via sample inlet [H] through the flow regulating valve [E], where the flow rate can be adjusted. Then the sample flows through the faraday electrode [D] into the measuring cell [C] were the Oxygen concentration of the sample is measured.

The sample leaves the measuring cell via flow sensor [B] through the sample outlet [F] and the drain funnel [G].

Oxygen sensor

Flow sensor

Flow cell

Faraday electrode

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Flow regulating valve

Sample outlet

Drain funnel

Sample inlet

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AMI Oxytrace QED

Product Description

2.2. Technical Data

Power Supply Voltage:

Power consumption:

Electronics Aluminium with a protection degree of IP 66 / NEMA 4X

housing Ambient temperature:

Humidity: Display:

Sample

requirements

Flow cell and

connection

On-Site

requirements

Accuracy

Reproducibility

Flow rate: Temperature: Inlet pressure: Outlet pressure pH: Suspended solids:

Flow cell made of acrylic glass with built-in flow adjustment valve and digital sample flow meter

Sample inlet: Sample outlet:

Sample inlet:

Sample outlet:

± 1.5% of measured value or ± 0.2 ppb ±1% of measured value or ± 0.15 ppb

100–240 VAC (± 10%) 50/60 Hz (± 5%) or 24 VDC (± 10%) max. 30 VA

-10 to +50 °C 10–90% rel., non condensing backlit LCD, 75 x 45 mm

8–25 l/h 15–45 °C

0.2 to 1 bar pressure free not lower than pH 4 less than 10 ppm

1/4” Swagelok tube adapter for flexible tube 15x20 mm

Swagelok connection for stainless steel tube 1/4”. 15x20 mm (1/2”) hose nozzle which must end in a pressure free waste of sufficient capacity.

Measuring

Range

Temperature

Sample Flow

Measurement

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up to 60°C Resolution: 0.1°C

With Swan sample flow meter and alarm in case of insufficient sample flow.

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AMI Oxytrace QED

AMI Oxytrace

850 mm / 33½”

13 mm / ½”

4 x dia. 10 mm / ⅜”

254 mm/ 10”

280 mm/ 11”

824 mm / 32

”

Product Description

Dimensions

(Oxytrace and

Oxytrace QED)

Panel:

Mounting hole distance Screws: Weight:

Stainless steel 280x850x 150 mm 254x824 8 mm diameter

12.0 kg

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AMI Oxytrace QED

D E

F G

Product Description

2.3. Instrument Overview

AMI Oxytrace

Panel

AMI Transmitter

Oxygen sensor

Flow sensor

Flow cell

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Flow regulating valve

Sample outlet

Drain funnel

Sample inlet

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AMI Oxytrace QED

E F G H I

Product Description

AMI Oxytrace QED

Panel

AMI Transmitter

Faraday control unit

Oxygen sensor

Sample outlet

Flow sensor

Flow cell

Flow regulating valve

Faraday electrode

Drain funnel

Sample inlet

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AMI Oxytrace QED

Product Description

2.4. Single Components

2.4.1 AMI Oxytrace Transmitter

Electronic transmitter and controller for oxygen measurement.

18.5

7.5

180

165

140 103

4.5

Dimensions Width:

Height: Depth: Weight:

Specifications Electronics case:

Protection degree: Display: Electrical connectors:

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140 mm 180 mm 70 mm

1.5 kg Cast aluminum

IP 66 / NEMA 4X backlit LCD, 75 x 45 mm screw clamps

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AMI Oxytrace QED

100

31.9

38.3

Product Description

2.4.2 Sensor OXYTRACE G

Sensor for the measurement of dissolved oxygen in ultra pure water. Precise oxygen measuring cell with integrated temperature sensor and guard electrode for faster initial response time after maintenance.

Technical data:Clark oxygen electrode

Cathode gold, anode silver, guard silver Zero current-free electrode system Robust 25 µm fluoropolymer diaphragm

Measuring

range

Temp. sensor:NT5K

Accuracy:0,3 % if calibration temperature = measuring temp.

Precision

Response time

Minimal flow

Operating temp.

Material

Protection

Weight

0–20 ppm O Automatic range switching

Range

0.1–9.99 ppb 10–199.9 ppb 200– 1999 ppb 2–20 ppm 0 – 200% saturation

1,5 % at ± 10 °C deviation to cal. temperature ± 1 % of reading or ±0.15 ppb

< 30 seconds (rising concentration)

50 cm/s Pressure resistance: 3 bar

max. 50 °C

shaft: polyacetal copolymer

cathode/anode/guard: gold/silver/silver membrane: fluoropolymer IP 68

150 g

(25 °C)

Resolution

0.01 ppb

0.1 ppb

1.0 ppb

0.01 ppm

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AMI Oxytrace QED

217.7

178.5

164

138

5.3

Product Description

2.4.3 QV-Flow PMMA OTG

Flow cell Flow cell made of acrylic glass with integrated flow sensor.

Sample temp. max. 45 °C

Inlet pressure max. 1 bar

Outlet pressure

Sample flow 6–25 l/h

Process con-

nection inlet

Outlet SERTO angle for 6 mm flexible tube

Dimensions see picture below

Pressure free

Swagelok connection for 1/4” tube

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AMI Oxytrace QED

Product Description

2.4.4 B-Flow SS316L OTG

Flow cell B-Flow SS316L OTG is made of stainless steel without flow sensor

and can be used for higher operating pressures and temperatures.

Operating temp.

Sensor max. 50 °C

Operating

pressure

Sensor max. 3 bar

Flow cell

connection

Dimensions see picture below

-10 to + 130 °C

max. 5 bar at 130 °C

2x female thread 1/8" ISO

52 40

126.1

128.6

99.5

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AMI Oxytrace QED

Installation

3. Installation

The first part of this chapter describes the preparing and placing of the system in position for use. The second part describes the wiring and the properties of the signal outputs and relay.

Restrictions

on use

3.1. Installation Check List

If exposed to weather, install a cover to protect the instrument from insolation and precipitation. See Technical Data, p. 13 for temperature limitations.

Check Instrument’s specification must conform to the National Electrical

On site requirements

Installation Mount the instrument in vertical position. Display should be at eye

Electrical Connections

Swansensor

Oxytrace G

Code, all state and local codes, and all plant codes and standards for electrical equipment.

100–240 VAC ( 10%), 50/60 Hz (  5%) or 24 VDC (±10%), isolated power outlet with ground connection and 30 VA Sample line with 8– 25 l/h and 0.2 – 3 bar. Waste line with pressure free drain.

level. Connect the sample and waste line, see Connecting Sample Inlet

and Outlet, p. 23.

Connect all external devices like limit switches, current loops and pumps, see Electrical Connections, p. 25. Connect the power cord, do not switch on power until all external devices are connected.

The Swansensor Oxytrace G is delivered with prefilled electrolyte chamber. A transport protection cap filled with water keeps the sensor wet during transport and storage. Before installation, remove the transport protection cap and clean the sensor surfaces with water. Afterwards install the oxygen sensor and connect the cable. See Install the Swansensor Oxytrace G, p. 24.

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AMI Oxytrace QED

Installation

Tur n-o n power

Run-in Period Calibration

Open Sample Flow

Programming Program all parameters for external devices (interface, etc.). Set

Switch on power. First, the analyzer performs a self test, displays the firmware version and then starts normal operation

Leave the sensor at the air. The sensor has to run-in for at least 30 min, better 1 h. During this time it has to be at air with a dry and clean membrane and has to be connected to the powered instrumenty. Calibrate the sensor after this time, see Calibration, p. 47. and mount it into the flow cell afterwards.

Open the flow regulating valve to allow sample flow into the flow cell and into the waste. Sample must always overflow into waste

all parameters for instrument operation (limits, alarms).

3.2. Mounting of Instrument Panel

The first part of this chapter describes the preparing and placing of the system for use.

 The instrument must only be installed by trained personnel.  Mount the instrument in vertical position.  For ease of operation mount it so that the display is at eye

level.

 For the installation a kit containing the following installation

material is available:

– 4 Screws 8x60 mm

– 4 Dowels

– 4 Washers 8.4/24 mm

Mounting re-

quirements

The instrument is only intended for indoor installation. For dimensions see Dimensions (Oxytrace and Oxytrace QED), p.

14.

22 A-96.250.531 / 300617

Page 25

AMI Oxytrace QED

ABCDE

Installation

3.3. Connecting Sample Inlet and Outlet

3.3.1 Swagelok Fitting Stainless Steel at Sample Inlet

Preparation Cut the tube to length and deburr it. The tube must be straight and

free from blemishes for approximately 1,5 x tube diameter from the end. Lubrication with lubricating oil, MoS2, Teflon etc. is recommended for the assembly and reassembly of bigger sized unions (thread, compression cone).

Installation 1 Insert the compression ferrule [C] and the compression

cone [D] into the union nut [B].

2 Screw on the union nut onto the body, do not tighten it.

3 Push the stainless steel pipe through the union nut as far as it

reaches the stop of the body.

4 Mark the union nut at 6 o’clock position.

5 While holding the fitting body steady, tighten the nut union 1¼

rotation using an open ended spanner.

Stainless steel tube

Union nut

Compression ferrule

Compression cone

Body

Tightened connection

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AMI Oxytrace QED

Installation

3.3.2 FEP Tube at Sample Outlet

1/2” Tube at waste funnel.

Connect the 1/2” tube [C] to the hose nozzle [B] and place it into a drain with atmospheric pressure.

3.4 Install the Swansensor Oxytrace G

The Swansensor Oxytrace G is delivered with prefilled electrolyte chamber [E]. A transport protection cap [B] filled with water [D] keeps the sensor wet during transport and storage. To install the sensor proceed as follows:

Waste funnel

Hose nozzle

1/2” tube

Fixing sleeve

Transport protection cap

Swansensor Oxytrace G

Water

Sensor cap filled with electrolyte

24 A-96.250.531 / 300617

1 Unscrew the fixing sleeve [A].

2 Remove the transport protection cap [B].

3 Clean the Swansensor Oxytrace G [C] with water.

4 Install the Swansensor Oxytrace G into the flow cell

5 Connect the sensor cable to the transmitter, see Electrical Con-

nection Diagram AMI Oxytrace, p. 27.

Page 27

AMI Oxytrace QED

Installation

3.5. Electrical Connections

WARNING

Risk of electrical shock.

Do not perform any work on electrical components if the transmitter is switched on. Failure to follow safety instructions could result in serious injury or death.

 Always turn off AC power before manipulating electric parts.  Grounding requirements: Only operate the instrument from

an power outlet which has a ground connection.

 Make sure the power specification of the instrument corre-

sponds to the power on site.

Cable

thicknesses

In order to comply with IP66, use the following cable thicknesses

ABC

PG 11 cable gland: cable Ø

A B

PG 7 cable gland: cable Ø

PG 9 cable gland: cable Ø

outer

3–6.5 mm

outer

4–8 mm

outer

5–10 mm

NOTICE: Protect unused cable glands

Wire  For Relays: Use max. 1.5 mm

end sleeves.

 For Signal Outputs and Input: Use 0.25 mm

/ AWG 14 stranded wire with

/ AWG 23

stranded wire with end sleeves.

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AMI Oxytrace QED

Installation

WARNING

External Voltage.

External supplied devices connected to relay 1 or 2 or to the alarm relay can cause electrical shocks

 Make sure that the devices connected to the following con-

tacts are disconnected from the power before resuming in-

stallation.

–relay 1

–relay 2

– alarm relay

WARNING

To prevent from electrical shock, do not connect the instrument to the power unless the ground wire (PE) is connected.

 Do not connect unless specifically instructed to do so.

WARNING

The mains of the AMI Transmitter must be secured by a main switch and appropriate fuse or circuit breaker.

26 A-96.250.531 / 300617

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AMI Oxytrace QED

Installation

3.5.1 Electrical Connection Diagram AMI Oxytrace

CAUTION

Use only the terminals shown in this diagram, and only for the mentioned purpose. Use of any other terminals will cause short circuits with possible corresponding consequences to material and personnel.

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AMI Oxytrace QED

Installation

3.5.2 Electrical Connection Diagram AMI Oxytrace QED

CAUTION

28 A-96.250.531 / 300617

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AMI Oxytrace QED

Installation

3.5.3 Power Supply

WARNING

Risk of electrical shock

Do not perform any work on electrical components if the transmitter is switched on. Failure to follow safety instructions could result in serious injury or death.

 Always turn off AC power before manipulating electric parts.  Installation and maintenance of electrical parts must be per-

formed by professionals.

Power supply connector

Neutral conductor, Terminal 2

Phase conductor, Terminal 1

Protective earth PE

NOTICE: The protective earth wire (Ground) has to be connected to the grounding terminal.

Installation

requirements

A-96.250.531 / 300617 29

The installation must meet the following requirements.

 Mains fuse 1.6 AT  Mains cable to comply with standards IEC 60227 or IEC

60245; flammable rating FV1

 Mains equipped with an external switch or circuit-breaker

– near the instrument – easily accessible to the operator – marked as interrupter for AMI Oxytrace QED

Page 32

AMI Oxytrace QED

Installation

3.6. Input

NOTICE: Use only potential-free (dry) contacts. The total resistance (sum of cable resistance and resistance of the relay contact) must be less than 50 Ω.

Terminals 16 and 42 If the signal output is set to hold, the measurement is interrupted if

input is active. For programming see Menu Installation 5.3.4, p. 85.

3.7. Relay Contacts

3.7.1 Alarm Relay

NOTICE: Max. load 1 A/250 VAC

Alarm output for system errors. Error codes see Error List, p. 59.

NOTICE: With certain alarms and certain settings of the AMI transmitter the alarm relay does not switch. The error, however, is shown on the display.

Ter min als Description Relay connection

Normally Closed

Normally Open

10/11 Active (opened) during normal

operation. Inactive (closed) on error and loss of power.

12/11 Active (closed) during normal

operation. Inactive (opened) on error and loss of power.

1) usual use

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AMI Oxytrace QED

Installation

3.7.2 Relay 1 and 2

NOTICE: Max. load 1 A/250 VAC

Relay 1 and 2 can be configured as normally open or as normally closed. Standard for both relays is normally open. To configure a Relay as normally closed, set the jumper in the upper position.

NOTICE: Some error codes and the instrument status may influence the status of the relays described below.

Relay config. Terminals

Normally Open

Normally Closed

6/7: Relay 1 8/9: Relay 2

Jumper pos. Description Relay configuration

Inactive (opened) during normal operation and loss of power. Active (closed) when a programmed function is executed.

Inactive (closed) during normal operation and loss of power. Active (opened) when a

programmed function is executed.

ABJumper set as normally open (standard setting)

Jumper set as normally closed

For programming see Menu Installation 5.3.2 and 5.3.3, p. 81.

A-96.250.531 / 300617 31

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AMI Oxytrace QED

Installation

CAUTION

Risk of damage of the relays in the AMI Transmitter due to heavy inductive load.

Heavy inductive or directly controlled loads (solenoid valves, dosing pumps) may destroy the relay contacts.

 To switch inductive loads > 0.1 A use an AMI relay box avail-

able as an option or suitable external power relays.

Inductive load Small inductive loads (max 0.1A) as for example the coil of a power

Resistive load Resistive loads (max. 1A) and control signals for PLC, impulse

Actuators Actuators, like motor valves, are using both relays: One relay con-

relay can be switched directly. To avoid noise voltage in the AMI Transmitter it is mandatory to connect a snubber circuit in parallel to the load. A snubber circuit is not necessary if an AMI relaybox is used.

AC or DC power supply

AMI Transmitter

External power relay

Snubber

Power relay coil

pumps and so on can be connected without further measures

tact is used for opening, the other for closing the valve, i.e. with the 2 relay contacts available, only one motor valve can be controlled. Motors with loads bigger than 0.1A must be controlled via external power relays or an AMI relay box.

AMI Transmitter

PLC or controlled pulse pump

Logic

AC or DC power supply

AMI Transmitter

Actuator

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AMI Oxytrace QED

Installation

3.8. Signal Outputs

3.8.1 Signal output 1 and 2 (current outputs)

NOTICE: Max. burden 510 Ω. If signals are sent to two different receivers, use signal isolator (loop isolator).

Signal output 1: Terminals 14 (+) and 13 (-) Signal output 2: Terminals 15 (+) and 13 (-) Programming see menu 5.2 Signal Outputs, p. 75

3.9. Interface Options

AMI Transmitter

Slot for interfaces

Frontend PCB

Screw terminals

The slot for interfaces can be used to expand the functionality of the AMI instrument with either:

 an additional signal output  a Profbus or Modbus connection  a HART connection  an USB Interface

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AMI Oxytrace QED

Installation

3.9.1 Signal Output 3

Terminal 38 (+) and 37 (-). Requires the additional board for the third signal output 0/4– 20 mA

PCB. The third signal output can be operated as a current source or as a current sink (switchable via switch [A]). For detailed information see the corresponding installation instruction.

NOTICE: Max. burden 510

Third signal output 0/4 - 20 mA PCB

A Operating mode selector switch

3.9.2 Profibus, Modbus Interface

Terminal 37 PB, Terminal 38 PA To connect several instruments by means of a network or to config-

ure a PROFIBUS DP connection, consult the PROFIBUS manual. Use appropriate network cable.

NOTICE: The switch must be ON, if only one instrument is installed, or on the last instrument in the bus.

.

OFF

Profibus, Modbus Interface PCB (RS 485)

A On - OFF switch

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AMI Oxytrace QED

Installation

3.9.3 HART Interface

Terminals 38 (+) and 37 (-). The HART interface PCB allows for communication via the HART

protocol. For detailed information, consult the HART manual.

HART Interface PCB

3.9.4 USB Interface

The USB Interface is used to store Logger data and for Firmware up load. For detailed information see the corresponding installation instruction.

USB Interface

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AMI Oxytrace QED

Instrument Setup

4. Instrument Setup

4.1. Establish Sample Flow

1 Open the flow regulating valve [A] and wait until the flow cell is

completely filled.

2 Switch on power.

3 Adjust the sample flow to 8–25 l/h.

4.2. Programming

Program all parameters for external devices (interface, recorders, etc.)

Program all parameters for instrument operation (limits, alarms), see Program List and Explanations, S. 69

36 A-96.250.531 / 300617

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AMI Oxytrace QED

Exit Enter

BCDA

25.4°C

RUN

9 l/h

14:10:45

1.05 ppb

Installation

Operation

Diagnostics

Messages

Maintenance

Main Menu

Enter

Exit

Operation

5. Operation

5.1. Keys

A to exit a menu or command (rejecting any changes)

to move back to the previous menu level

B to move DOWN in a menu list and to decrease digits

C to move UP in a menu list and to increase digits

D to open a selected sub-menu

to accept an entry

Program

Access, Exit

A-96.250.531 / 300617 37

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AMI Oxytrace QED

Operation

5.2. Display

AB CD

RUN

0.15

12 l/h

15:20:18

ppm

23 °C

A RUN normal operation

HOLD input closed or cal delay: Instrument on hold (shows

OFF input closed: control/limit is interrupted (shows status

B ERROR Error Fatal Error

C Keys locked, transmitter control via Profibus

D Time

E Process values

F Sample Temperature

G Sample flow in i/h

H Relay status

status of signal outputs).

of signal outputs).

Relay status, symbols

upper/lower limit not yet reached upper/lower limit reached control upw./downw. no action

control upw./downw. active, dark bar indicates control intensity

motor valve closed motor valve: open, dark bar indicates approx. position timer timer: timing active (hand rotating)

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AMI Oxytrace QED

Messages

Operation

Maintenance

Diagnostics

Main Menu

Installation

1.1

Pending Errors

Messages

Maintenance List Message List

2.1

Interface

I/O State

Sample

Identification Sensors

Diagnostics

3.1

Calibration

Maintenance

Set Time 23.09.06 16:30:00

Simulation

Service

4.1

Logger

Relay Contacts

Sensors

Operation

5.1

Interface

Miscellaneous

Relay Contacts

Sensors Signal Outputs

Installation

Operation

5.3. Software Structure

Menu Messages 1 Reveals pending errors as well as an event history

(time and state of events that have occurred at an earlier point of time). It contains user relevant data.

Menu Diagnostics 2 Provides user relevant instrument and sample data.

A-96.250.531 / 300617 39

Menu Maintenance 3 For instrument calibration, relay and signal output

simulation, and to set the instrument time. It is used by the service personnel.

Menu Operation 4 User relevant parameters that might need to be

modified during daily routine. Normally password protected and used by the process-operator.

Subset of menu 5 - Installation, but process-related.

Menu Installation 5 For initial instrument set up by SWAN authorized

person, to set all instrument parameters. Can be protected by means of password.

Page 42

AMI Oxytrace QED

5.1.2

Sensors

Sensor type FOME

Temperature NT5K Standards

Disinf. Free chlorine

4.4.1

Logger

Log interval 30 min

Clear logger no

4.1.3

Logger

Clear logger no

Log interval 30min

1 Hour

Interval.

5 min

30 min

10 min

4.1.3

Logger

Log interval 10 min

Clear logger no

4.1.3

Logger

Log interval Clear logger no

Save ?

Yes

5.3.1.1.1

Alarm High 10.00 ppm

Alarm oxygen

Alarm Low 1.00 ppb Hysteresis 0.10 ppb Delay 5 Sec

5.3.1.1.1

Alarm oxygen

Alarm Low 1.00 ppb Hysteresis 0.10 pp Delay 5 Sec

Alarm High 8.00 ppb

Operation

5.4. Changing Parameters and values

Changing

parameters

The following example shows how to change the logger interval:

1 Select the parameter you want to

change.

2 Press [Enter]

3 Press [ ] or [ ] key to

highlight the required parameter.

4 Press [Enter] to confirm the selec-

tion or [Exit] to keep the previous parameter).



The selected parameter is highlighted (but not saved yet).

5 Press [Exit].



Yes is highlighted.

6 Press [Enter] to save the new pa-

rameter.



The system reboots, the new parameter is set.

Changing

values

1 Select the value you want to

change.

2 Press [Enter].

3 Set required value with [ ] or

[] key.

4 Press [Enter] to confirm the new

value.

5 Press [Exit].



Yes is highlighted.

40 A-96.250.531 / 300617

6 Press [Enter] to save the new val-

ue.

Page 43

AMI Oxytrace QED

Maintenance

6. Maintenance

Maintenance frequency depends strongly on the water quality. The AMI Oxytrace QED is designed for determination of low level of dissolved oxygen in high purity water.

It is not suitable for the measurement of dissolved oxygen in waste water.

6.1. Maintenance Table

Weekly Check sample flow.

Monthly If necessary, perform an air calibration.

Half-yearly Clean Oxytrace G membrane with a soft tissue,

Yearly If necessary, replace filling electrolyte.

Every 2nd year

see Maintenance of the Oxygen Sensor, p. 42. Clean faraday electrode, see Maintenance of the

Faraday electrode, p. 45

If the sensor is exposed to air frequently and during long time intervals, the electrolyte and membrane may have to be changed earlier (see below*). Clean flow cell and flow meter, if dirty.

Replace Swansensor Oxytrace G membrane by using a new, pre filled sensor cap.

*A change of membrane and electrolyte is recommended:

 if indicated in the maintenance list (remaining amount <10%)  if the response of the sensor is slow  if the sensor can not be calibrated any more and/or the instru-

ment shows a corresponding error message

 if the sensor signal is very unstable.

6.2. Stop of Operation for Maintenance

1 Shut off power of the instrument.

2 Stop sample flow by closing the flow regulating valve.

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AMI Oxytrace QED

Maintenance

6.3. Maintenance of the Oxygen Sensor

WARNING

Etching liquid

The electrolyte is alkaline and caustic. It contains less than 1% of potassium hydroxide.

 Do not ingest. Wear protective goggles and gloves during

handling. Avoid contact with clothes.

 In case of accidental contact with the eyes, wash immediately

with clear water and contact a physician. Show him the label

of the bottle or this section of the manual.

 Short contact with skin is harmless, nevertheless wash with

lots of water.

6.3.1 Electrolyte exchange

An electrolyte exchange is indicated in the maintenance list as soon as the remaining amount is below 10%.

Fixing sleeve

Sensor

Flow cell

1 Unscrew the fixing sleeve [A].

2 Remove the sensor from the flow

cell.

NOTICE: Do not pull out the sensor with force! To remove the sensor from the flow cell, open the flow regulating valve during removing the sensor. This prevents the formation of a vacuum, and the sensor can easily be removed from the flow cell.

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AMI Oxytrace QED

Maintenance

3 Unscrew and remove the sensor cap [H] from the Swansensor

Oxytrace G [A].

4 Empty the remaining electrolyte.

5 Refill the sensor cap with fresh electrolyte.

Swansensor Oxytrace G

Thread

Groove

B C

Guard electrode

Anode

Measuring head

Cathode

Sensor cap with membrane

NOTICE: There is a groove [C] in the thread [B] of the sensor, where excessive air and electrolyte can escape while screwing the sensor cap onto the sensor. Hold the sensor in vertical position, measuring head pointing downwards.

6 Slowly screw the sensor cap onto the sensor to allow the ex-

cess electrolyte to escape without building up too much pressure inside the electrode. Fasten sensor cap tightly.

7 Clean the sensor thoroughly and dry the sensing membrane

with a soft tissue.

8 Switch on power.

9 Let the sensor run-in at air for at least 30 min, better 1 h.

10 Afterwards perform an air calibration.

11 Install the sensor into the flow cell.

12 Select “New Filling” to reset the counter for remaining electro-

lyte, see <Maintenance>/<Service> 3.2.1, p. 71).

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AMI Oxytrace QED

Maintenance

6.3.2 Clean Swansensor Oxytrace G and Flow Cell

Depending on the water quality, the Swansensor Oxytrace G and the flow cell will necessitate a cleaning.

Before cleaning, stop operation as described in Stop of Operation

for Maintenance, p. 41.

1 Dismount the Swansensor Oxytrace G, see Electrolyte ex-

change, p. 42.

2 Clean the sensor with a soft tissue and rinse it with water after-

wards.

3 Use a soft brush to remove the dirt which sticks on the walls of

the flow cell.

4 Flush the flow cell with clean water.

5 Install the Swansensor Oxytrace G and start sample flow.

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AMI Oxytrace QED

Maintenance

6.4. Maintenance of the Faraday electrode

Fixing sleeve

Electrode body

Washer

O-ring

Inner electrode

O-ring

Hollow electrode

1 Switch off the instrument and close the flow regulating valve.

A-96.250.531 / 300617 45

2 Open the faraday control unit.

3 Disconnect and remove the cable from the faraday control unit.

4 Unscrew and remove the fixing sleeve (A).

5 Remove the faraday electrode from the flow cell, do not pull on

the cable.

6 Remove the washer (C) and the o-ring [D] from the electrode

body (B).

7 Unscrew the electrode tip containing the hollow electrode (G).

Page 48

AMI Oxytrace QED

Maintenance

8 Clean the inner electrode (E) with a tissue and the hollow elec-

trode with a pipe cleaner.



The electrode surfaces should be shining metallic after

cleaning. Use a polishing detergent or a small amount of toothpaste.

9 Rinse all parts well with water.

10 Replace the O-ring and the washer if necessary.

11 Screw the hollow electrode finger-tight onto the electrode body.

12 Insert the faraday electrode into flow cell.

13 Tighten fixing sleeve firmly.

14 Feed the electrode cable through the cable gland of the faraday

control unit.

15 Connect the electrode cable to terminal 5 (green) and terminal 6

(white).

16 Switch the instrument on.

17 Open the flow regulating valve and adjust the sample flow be-

tween 8 and 25 l/h.

46 A-96.250.531 / 300617

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AMI Oxytrace QED

3.1.5

Calibration

Close regulating valve

to turn off sample flow.

<Enter> to continue

3.1.5

Calibration

Take sensor out of

flow cell and dry

membrane and sensor

<Enter> to continue

Maintenance

6.5. Calibration

The sensing part of the sensor must not be in direct contact with water! In the wet flow cell, the atmosphere will be saturated with water vapor. This atmosphere will produce the most accurate calibration results.

The required time for a calibration depends mainly on the difference between temperature and oxygen content in the sample and in the air. It can take 15 – 20 minutes. This is also the case, if the electrolyte was exchanged. As soon as the reading is stable, the microprocessor will store the calibration data in the memory.The end of the calibration is indicated on the display.

To perform a calibration proceed as follows:

1 Navigate to menu <Maintenance> /<Calibration>.

2 Press [Enter] to start the calibration and follow the dialog on the

display.

3 Stop the sample flow at with the

flow regulating valve.

A-96.250.531 / 300617 47

4 Unscrew and remove the thread-

ed sleeve [A], see Electrolyte ex-

change, p. 42.

5 Remove the oxygen sensor [B]

from the flow cell [C].

6 Dry the sensor membrane and the

flow cell with a soft paper tissue.

Page 50

AMI Oxytrace QED

3.1.5

Calibration

Place the electrode into

the wet flow cell at

a slightly tilted angle.

<Enter> to continue

3.1.1

Calibration

Saturation 98.7 % Sat. Current 32

A

Progress

3.1.1

Calibration

Saturation 98.7 % Sat. Current 32

A

Calibration Successful

Maintenance

7 Place the electrode slightly tilted

into th e flo w cel l, so t hat t he sensor cap rests on the rim for the O-ring.

A Tilted sensor B Flow cell

8 Press [Enter] to start the calibra-

tion measurement.



The saturation should reach

100%, the saturation current should be about 22 A to 33 A. If the measuring values are not stable during the measuring period, the calibration will be discarded.

9 Press [Enter] to confirm the cali-

bration.

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AMI Oxytrace QED

Maintenance

6.6. Zero-Verification

Swansensor Oxytrace G for the measurement of low oxygen content (< 1 ppb).

1 Calibrate the sensor according to chapter Calibration, p. 47.

2 Prepare a 5%-sodium sulfite solution with demineralized water.

3 Put the electrode into the sodium sulfite solution afterwards. As-

sure that there are no air bubbles in front of the sensor.

4 The measured value should now be < 1 ppb.

NOTICE: Depending on the state of the electrode this process can take several hours. In case of an electrode-refill, this can take days until the measured value is lower than 1 ppb.

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AMI Oxytrace QED

3.3

Progress

Faraday Verification

<Enter> to stop

Current Value 1.62 ppb Faraday Conc.

12.85 ppb

3.3

Progress

Faraday Verification

Done

Efficiency 91.5 % Faraday Conc. 12.85 ppb

Maintenance

6.7. Faraday Verification

The Faraday verification works only for oxygen concentrations below 200 ppb. If automatic Faraday verification is enabled, a periodic check of the system is performed. A manual verification can be started for test purposes.

Automatic

Verification

Manual

Verification

Per default the instrument performs an automatic faraday verification every 3 hours. To change the settings for automatic verification go to menu Faraday Parameter- Timer mode, see menu 4.1.3, p.

73 for details.

Possible settings are:

 off  interval  daily  weekly

To start a manual verification:

1 Navigate to menu 3.2.2 <Maintenance>/<Service>/<Faraday

Verification>.

2 Press [Enter] to start the Faraday

Verification.



The verification then starts

immediately.

3 Press [Enter] to confirm the Fara-

day Verification.

Results are saved in the Verification history menu 2.2.1.5

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AMI Oxytrace QED

Maintenance

6.8. Quality Assurance of the Instrument

Every SWAN on-line instrument is equipped with integrated, autonomous quality assurance functions to survey the plausibility of each measurement. For the AMI Oxytrace/ AMI Oxytrace QED these are:

 continuous monitoring of sample flow  continuous monitoring of the temperature inside the transmit-

ter case

 periodic accuracy test with ultra high precision resistors

Further a manual, menu driven inspection procedure can be carried out using a certified reference instrument. Running at the same sampling point as an inspection equipment, the AMI Inspector Oxygen verifies the measuring results. After enabling the quality assurance procedure by defining the quality assurance level, the instrument reminds the user periodically to run the procedure and results are stored in a history for review.

Quality

assurance

level

Central feature of the quality assurance function is the assignment of the monitored process to a Quality assurance level.

There are three predefined levels plus a user level. Hereby the inspection interval, the deviation limits of temperature and measuring result between the inspection equipment and the monitoring instrument are defined.

 Level 1: Tre nd; Measurement used as an additional informa-

tion to follow the process indicating trends.

 Level 2: Standard; Monitoring of several parameters of a pro-

cess (e.g. oxygen, saturation). In case of instrument failure, other parameters can be used for process monitoring.

 Level 3: Crucial; Monitoring of critical processes, value is

used for control of another part or subsystem (valve, dosing unit, etc.).

Additional level:

 Quality level 4: User; User defined inspection interval, maxi-

mal deviation of temperature and measuring result.

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AMI Oxytrace QED

Maintenance

max. deviation

Quality Level

0: Off

1: Trend

2: Standard

3: Crucial

4: User

a) sample temperature must have 25°C +/- 5°C.

Procedure The standard workflow contains following procedures:

temperature [°C]

Off Off

0.5 °C 10 %

0.4 °C 5 %

0.3 °C 5 %

0 - 2°C 0 - 20%

1 Activate SWAN Quality assurance procedure

2 Pre-test

3 Connect instruments

4 Carry out comparison measurement

5 Completion of the measurement

NOTICE: The procedure should only be carried out through qualified personnel.

Materials / Inspection equipment:

 Reference instrument: AMI INSPECTOR Oxygen  Two tubes made of PA

max. deviation

result [%]

min. inspection interval

Off

annual

quarterly

monthly

annual, quarterly, monthly

6.8.1 Activate SWAN Quality assurance procedure

Enable quality assurance procedure at each instrument by selecting the quality level in menu 5.1.4.

The corresponding submenus are then activated.

NOTICE: The activation is necessary the first time only.

52 A-96.250.531 / 300617

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AMI Oxytrace QED

Maintenance

6.8.2 Pre-test

 Reference instrument: AMI INSPECTOR Oxygen

– Check certificate; reference instrument certificate not older

than one year.

– Check battery; Battery of the AMI INSPECTOR Oxygen

should be completely charged. Remaining operating time on display minimum 20 hours.

– Sensor is in working condition.

 On-line instrument: Monitor AMI Oxytrace QED

– Good order and condition; Flow cell free of particles,

Sensor surface free of deposits.

– Check message list; Review the message list in menu 1.3

and check for frequently alarms (as for example flow alarms). If alarms occur frequently remove cause before starting the procedure.

6.8.3 Connect the sample lines

The choice of sampling depends strongly on local conditions on site. Possible sampling:

 via sample point,  via T-fitting or  via piggyback/downstream

NOTICE:

• avoid ingress of air, use screwed fitting,

• sample as near as possible to the process monitor,

• wait approx. 10 minutes, whilst measurement is running, until measurement value and temperature are stabilized.

Example As an example following picture shows the connection of the refer-

A-96.250.531 / 300617 53

ence instrument via T-fitting to the process monitor.

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AMI Oxytrace QED

Maintenance

Monitor AMI Oxytrace

AMI INSPECTOR Oxygen

Reference flow cell

On-line flow cell

1 Stop sample flow to the monitor AMI Oxytrace by closing the

appropriate valve, e.g. back pressure regulator, sample preparation or flow regulating valve at flow cell.

2 Connect sample line of the monitor AMI Oxytrace [A] with the

sample inlet of the reference instrument AMI INSPECTOR Oxygen [B]. Use the supplied tube, made of PA.

3 Connect sample outlet of the reference instrument AMI IN-

SPECTOR Oxygen to the sample outlet funnel of the monitor.

4 Switch on the AMI INSPECTOR Oxygen. Open the flow regulat-

ing valve and regulate the sample flow to 10 l/h. The actual flow is shown on the transmitter.

54 A-96.250.531 / 300617

Sample outlet

Sample inlet

T-fitting

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AMI Oxytrace QED

3.5.5

Quality Assurance

- Carry out preparations

- Install Inspector

- Sample flow to 10 l/h

<Enter> to continue

3.5.5

Quality Assurance

Value O2 0.05 ppb Value Temp. 25.00 C Wait 10 Minutes

<Enter> to continue

3.5.3

Quality Assurance

Value O2 0.05 ppb Value Temp. 25.00 C

<Enter> to continue

Inspector O2 0.06 ppb

Inspector Temp. 25.0 C

3.5.4

Quality Assurance

Value H2 0.05 ppb Value Temp. 25.00 C

<Enter> to continue

Inspector 0.06 ppb

Inspector Temp. 25.0 C

3.5.5

Quality Assurance

Max. Dev. O2 0.5 % Max. Dev. Temp. 0.4 °C

QA-Check succesful

Dev. O2 0.1 % Dev. Temp. 0.4 °C

Maintenance

6.8.4 Carry out comparison measurement

The comparison measurement is menu driven. Start by selecting Quality Assurance in menu 3.5 of the monitor AMI Oxytrace.

1 Navigate to menu Maintenance /Quality Assurance.

2 Press [Enter].

3 Follow the dialog on the Display.

4 Carry out pre test preparations

Connect instruments. Regulate sample flow to 10 l/h using the appropriate valve.

5 Wait 10 minutes whilst measure-

ment is running. Press [Enter] to continue.

6 Read the ppb value of the refer-

ence instrument and enter under “Inspector” by using the [ ] or [ ] keys.

7 Press [Enter] to confirm.

A-96.250.531 / 300617 55

8 Read temperature value of the ref-

erence instrument and enter under “Inspector Temp.” by using the [ ] or [ ] keys.

9 Press [Enter] to confirm.

10 Press [Enter] to continue.



The results are saved in QA-

History regardless if successful or not

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AMI Oxytrace QED

Maintenance

6.8.5 Completion of the measurement

1 Stop the sample flow to the AMI Oxytrace QED by closing the

appropriate valve, e.g. back pressure regulator, sample preparation or flow regulating valve at flow cell again.

2 Close flow regulating valve of the AMI Inspector.

3 Disconnect the AMI Inspector by removing the tubes and con-

nect the sample outlet of the Monitor AMI Oxytrace QED to the sample outlet funnel again.

4 Start sample flow again and regulate sample flow.

5 Shutdown the AMI INSPECTOR Oxygen.

If the AMI Inspector is put out of operation for a longer period of time, see Longer Stop of Operation, p. 58.

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AMI Oxytrace QED

CDEF G

Maintenance

6.9. Replacing Fuses

WARNING

External Voltage.

External supplied devices connected to relay 1 or 2 or to the alarm relay can cause electrical shocks.

 Make sure that the devices connected to the following con-

tacts are disconnected from the power before continuing the installation.

– relay 1 – relay 2 – alarm relay

When a fuse has blown, find out the cause and fix it before replacing it with a new one.

Use tweezers or needle-nosed pliers to remove the defective fuse. Use original fuses provided by SWAN only.

A-96.250.531 / 300617 57

1.6 AT/250V Instrument power supply

1.0 AT/250V Relay 1

1.0 AT/250V Relay 2

1.0 AT/250V Alarm relay

1.0 AF/125V Signal output 2

1.0 AF/125V Signal output 1

1.0 AF/125V Signal output 3

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AMI Oxytrace QED

Maintenance

6.10. Longer Stop of Operation

1 Shut off power of the instrument.

2 Stop sample flow.

3 Remove the Swansensor Oxytrace G.

4 Clean the sensor with a soft tissue and rinse it with water after-

wards.

5 Use a soft brush to remove the dirt which sticks on the walls of

the flow cell.

6 Fill the flow cell with water.

7 Install the Swansensor Oxytrace G.

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AMI Oxytrace QED

25.4°C

HOLD

8 l/h

14:10:45

7.04 ppm

Installation

Operation

Diagnostics

Messages

Maintenance

Main Menu

1.1

Message List

Pending Errors

Maintenance List

Messages

1.1.5

Pending Errors

Error Code E002

Alarm low

<Enter> to Acknowledge

Error List

7. Error List

Error

Non-fatal Error. Indicates an alarm if a programmed value is exceeded.

Such Errors are marked E0xx (bold and black). Fatal Error (blinking symbol) Control of dosing devices is interrupted.

The indicated measured values are possibly incorrect. Fatal Errors are divided in the following two categories:

 Errors which disappear if correct measuring conditions are re-

covered (i.e. Sample Flow low). Such Errors are marked E0xx (bold and orange)

 Errors which indicate a hardware failure of the instrument.

Such Errors are marked E0xx (bold and red)

Error or fatal Error Error not yet acknowledged. Check Pending Errors 1.1.5 * and take corrective action.

Press [ENTER].

A-96.250.531 / 300617 59

Navigate to menu Messages. Press [ENTER].

Navigate to menu Pending Errors. Press [ENTER].

Press [ENTER] to acknowledge the Pending Errors. The Error is reset and saved in the Message List.

* Menu numbers see

Program Overview, S. 63

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AMI Oxytrace QED

Error List

Error Description Corrective action

E001 Oxygen Alarm high

E002 Oxygen Alarm low

E003 Saturation Alarm high

E004 Saturation Alarm low

E007 Sample Temp. high

E008 Sample Temp. low

E009 Sample Flow high

E010 Sample Flow low