YSI IFL 700 IQ User Manual

Operating manual

IFL 700 IQ

IFL 701 IQ

IFL 700 IQ

IQ SENSOR NET total suspended solids sensor

ba76129e01 10/2012

IFL 70x IQ

Note

For the most recent version of the manual, please visit www.ysi.com.

Contact YSI

1725 Brannum Lane

Yellow Springs, OH 45387 USA Tel: [phone]

800-765-4974

Email: [e-mail] Internet: www.ysi.com

Copyright © 2012 Xylem Inc.

2

ba76129e01

10/2012

IFL 70x IQ	Contents

IFL 70x IQ - Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 How to use this component operating manual . . . . . . . . 1-1 1.2 Structure of the IFL 70x IQ sludge level sensor . . . . . . . 1-2 1.3 Recommended fields of application . . . . . . . . . . . . . . . . 1-3

2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.1.1 Safety information in the operating manual . . . . 2-1 2.1.2 Safety signs on the product . . . . . . . . . . . . . . . . 2-1

2.1.3Further documents providing safety information 2-1

2.2 Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2.2 Requirements for safe operation . . . . . . . . . . . . 2-2 2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . 2-2

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 IQ SENSOR NET system requirements . . . . . . . . . . . . . . 3-1

3.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.3.1 General information . . . . . . . . . . . . . . . . . . . . . . 3-1 3.3.2 General installation conditions . . . . . . . . . . . . . 3-2

3.3.3Influence of permanently installed fixtures . . . . 3-3

3.3.4Influence of gas bubbles and suspended

particles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.5Short-term interferences due to obstacles . . . . 3-4

3.3.6 Connecting the sensor . . . . . . . . . . . . . . . . . . . 3-4 3.4 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.5 Setting table for the IFL 70x IQ . . . . . . . . . . . . . . . . . .		. 3-9
3.5.1	Sensor settings menu . . . . . . . . . . . . . . . . . . .	. 3-9
3.5.2	Display/Extras menu . . . . . . . . . . . . . . . . . . . .	3-13

4 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

5 Maintenance, cleaning, accessories . . . . . . . . . . . . . 5-1

5.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2Cleaning of the sensor shaft and ultrasonic transducer

surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

ba76129e01

10/2012

0 - 1

Contents	IFL 70x IQ

7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Measurement characteristics . . . . . . . . . . . . . . . . . . . . .7-1 7.2 Application characteristics . . . . . . . . . . . . . . . . . . . . . . .7-1 7.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2 7.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

8 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Explanation of the messages . . . . . . . . . . . . . . . . . . . . .8-1 8.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . .8-1 8.1.2 Info messages . . . . . . . . . . . . . . . . . . . . . . . . . .8-2

8.2 Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

9 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1	Ordering & Technical Support . . . . . . . . . . . . . . . . . . . .	9-1
9.2	Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9-1

0 - 2

ba76129e01

10/2012

IFL 70x IQ	Overview

Structure of the

IQ SENSOR NET

operating manual

1 Overview

1.1How to use this component operating manual

IQ Sensor Net Operating Manual
		System
	Operating
		Manual
	(Ring Binder)
IQ Sensor	MIQ Module	MIQ Terminal
Operating	Operating	Operating
Manual	Manual	Manual
Component Operating Manuals

Fig. 1-1 Structure of the IQ SENSOR NET operating manual

The IQ SENSOR NET operating manual has a modular structure like the IQ SENSOR NET system itself. It consists of a system operating manual and the operating manuals of all the components used.

Please file this component operating manual into the ring binder of the system operating manual.

ba76129e01

10/2012

1 - 1

Overview	IFL 70x IQ

1.2Structure of the IFL 70x IQ sludge level sensor

Structure

5

4

3

2

1

6

Fig. 1-2 Structure of the sludge level sensor (example: IFL 700 IQ)

1	Wiper (only IFL 700 IQ)
2	Ultrasonic transducer
3	Marking for immersion depth 0.1 m
4	Shaft
5	Plug head connector
6	Leg supports

Measuring principle The IFL 70x IQ is based on the ultrasonic measuring principle. Ultrasonic waves transmitted by the ultrasonic transducer are totally or partly reflected by layers at which the density of the measuring medium changes (e.g. sludge blanket, bottom of the basin), and then received again. Based on the reflection intervals, the distance between the levels and the ultrasonic transducer is determined:

1 - 2

ba76129e01

10/2012

IFL 70x IQ	Overview

Ultrasonic transducer

1

2

Sludge blanket level

3

Bottom

Fig. 1-3 Principle of the ultrasonic measurement

1Transmitted ultrasonic waves

2Echo reflected by the sludge blanket (short reflection interval)

3Echo reflected by the bottom area (long reflection interval)

Wiper (cleaning system) The IFL 700 IQ sensor has a mechanical wiper that effectively cleans gas bubbles and dirt off the ultrasonic transducer. The wiper operates contactless and is maintenance-free and wear-free.

1.3Recommended fields of application

Sludge level control and monitoring in waste water treatment.

Detailed information on the subject of sludge level measurement is given for example in the DWA information sheet no. 256 "Prozessmesstechnik auf Kläranlagen, Teil 8: Messeinrichtungen zur Bestimmung des Schlammspiegels" (Process measuring technique at wastewater treatment plants, part 8: Instrumentation for determination of the sludge level".

ba76129e01

10/2012

1 - 3

Overview	IFL 70x IQ

1 - 4

ba76129e01

10/2012

IFL 70x IQ	Safety instructions

2 Safety instructions

2.1Safety information

2.1.1Safety information in the operating manual

This operating manual provides important information on the safe operation of the product. Read this operating manual thoroughly and make yourself familiar with the product before putting it into operation or working with it. The operating manual must be kept in the vicinity of the meter so you can always find the information you need.

Important safety instructions are highlighted in this operating manual. They are indicated by the warning symbol (triangle) in the left column. The signal word (e.g. "CAUTION") indicates the danger level:

WARNING

indicates a possibly dangerous situation that can lead to serious (irreversible) injury or death if the safety instruction is not followed.

CAUTION

indicates a possibly dangerous situation that can lead to slight (reversible) injury if the safety instruction is not followed.

NOTE

indicates a situation where goods might be damaged if the actions mentioned are not taken.

2.1.2Safety signs on the product

Note all labels, information signs and safety symbols on the product. A warning symbol (triangle) without text refers to safety information in this operating manual.

2.1.3Further documents providing safety information

The following documents provide additional information, which you should observe for your safety when working with the measuring system:

Operating manuals of other components of the IQ SENSOR NET system (power packs, controller, accessories)

Safety datasheets of calibration and maintenance equipment (e.g. cleaning solutions).

ba76129e01

10/2012

2 - 1

Safety instructions	IFL 70x IQ

2.2Safe operation

2.2.1Authorized use

The authorized use of the IFL 70x IQ consists of its use as a sludge level sensor in the IQ SENSOR NET. Only the operation and running of the product according to the instructions and technical specifications given in this operating manual is authorized (see chapter 7 TECHNICAL DATA). Any other use is considered unauthorized.

2.2.2Requirements for safe operation

Note the following points for safe operation:

The product may only be operated according to the authorized use specified above.

The product may only be supplied with power by the energy sources mentioned in this operating manual.

The product may only be operated under the environmental conditions mentioned in this operating manual.

The product may not be opened.

2.2.3Unauthorized use

The product must not be put into operation if:

it is visibly damaged (e.g. after being transported)

it was stored under adverse conditions for a lengthy period of time (storing conditions, see chapter 7 TECHNICAL DATA).

2 - 2

ba76129e01

10/2012

IFL 70x IQ	Commissioning

3 Commissioning

3.1IQ SENSOR NET system requirements

Software statuses of the The operation of the IFL 70x IQ requires the following software vercontroller and terminal sions in the IQ SENSOR NET:

components

	MIQ/MC2	Controller software:	Version 3.35 or higher
	MIQ/TC 2020 XT	Terminal software:	Version 3.35 or higher

3.2Scope of delivery

Sludge level sensor IFL 700 IQ or IFL 701 IQ

Operating manual

3.3Installation

3.3.1General information

NOTE

Sharp objects can damage the ultrasonic transducer. Please be careful, especially when handling sharp tools, when cleaning and during transport.

NOTE (only IFL 700 IQ)

If the sensor is connected to the IQ SENSOR NET, the mechanical wiper may start moving unexpectedly. Make sure that the swivel range of the wiper is always free. Only put the sensor down on its leg supports on a flat surface with the ultrasonic transducer pointing downward.

ba76129e01

10/2012

3 - 1

Commissioning	IFL 70x IQ

3.3.2General installation conditions

	Minimum distance	= 0.2 m + 0.05 * (water depth - immersion depth in m)
	from basin wall

	Immersion depth	Wall
	(= 0.1 m)
	Immersion depth
	Dead zone
	(= 0.4 m)
	Vertical
	installation
	Depth of the
	sludge level	obstacles
Water
		and
depth	Measurement cone approx. 7°
	(half-value angle)
		freeoffixtures
	Sludge level
	Height of the
	sludge level

Bottom of the basin

Fig. 3-1 Ideal installation environment

3 - 2

ba76129e01

10/2012

IFL 70x IQ	Commissioning

Sensor installation The following conditions should always be met:

Vertical

Sufficient distance from the basin wall (minimum distance, see formula in Fig. 3-1).

If the distance to the wall of the basin is small, the wall should be rather smooth.

Immersion depth (0.05 m ... 3 m)

Minimum distance between the sensor bottom and sludge blanket = 0.4 m ("dead zone").

Ideally, at the installation location the ultrasonic cone is free of barriers that move the sensor from its position or cross the measuring cone and thus cause interfering echoes.

Additional measures are required in order to minimize negative impacts (see section 3.3.5).

3.3.3Influence of permanently installed fixtures

Permanently installed fixtures in the vicinity of the measuring cone reflect the ultrasonic waves transmitted and thus cause interfering echoes.

If there are permanently installed fixtures in the expectation range of the sludge blanket level, it is not possible to clearly assign an echo to a sludge level. In this case, a different installation location must be selected (e.g. with a greater distance from the wall). Alternatively, the evaluation range can be adjusted.

3.3.4Influence of gas bubbles and suspended particles

Gas bubbles and suspended particles reduce the propagation of ultrasonic waves. A high concentration of gas bubbles and suspended particles can in extreme cases lower the range of the sensor.

If there are range problems, the sensor must be immersed deeper (note the dead zone and maximum depth of immersion).

With the IFL 700 IQ sensor, the mechanical wiper removes gas bubbles and dirt from the surface of the ultrasonic transducer.

ba76129e01

10/2012

3 - 3

Commissioning	IFL 70x IQ

Connection cable

Are the plug connections dry?

Connecting the sensor to the sensor connection cable

3.3.5Short-term interferences due to obstacles

Certain events may for a short period of time affect or interrupt the measurement. In waste water treatment plants, these events are normally:

Moving scrapers that displace an installed sensor from its measuring position or cross its measuring cone.

Fixtures permanently installed in the basin such as pipes or scrapers that are touched by the measuring cone of a sensor on a scraper bridge when rotating.

Interferences due to obstacles can be suppressed with the aid of certain settings (see setting table, section 3.5).

The default settings may have to be adjusted as necessary.

A tilting armature is available for installation in basins with a chain scraper or linear scraper for scum removal. Thus the sensor is temporarily pulled out of the basin by the moving scraper.

3.3.6Connecting the sensor

A sensor connection cable of the SACIQ or SACIQ SW type is required to connect the sensor. The cable is available in different lengths. Compared to the SACIQ standard model, the SACIQ SW sensor connection cable is optimized concerning its resistance to corrosion. Information on this and other IQ SENSOR NET accessories is given in the YSI catalog and on the Internet.

How to connect the SACIQ (SW) sensor connection cable to the terminal strip of an MIQ module is described in chapter 3 INSTALLATION of the IQ SENSOR NET system operating manual.

Before connecting the sensor and sensor connection cable, please make sure the plug connections are dry. If moisture gets into the plug connections, first dry the plug connections (dab them dry or blow them dry using compressed air).

Do not suspend the sensor on the sensor connection cable. Use a sensor holder or an armature. Information on this and other IQ SENSOR NET accessories is given in the YSI catalog and on the Internet.

1Take the protective caps off the plug connections of the sensor and the SACIQ (SW) sensor connection cable and keep them safe.

3 - 4

ba76129e01

10/2012