YSI IFL 700 IQ User Manual
IFL 700 IQ
IFL 700 IQ
IFL 701 IQ
Operating manual
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IQ S
ENSOR NET total suspended solids sensor
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: +1 937-767-7241
800-765-4974
Email: environmental@ysi.com
Internet: www.ysi.com
Copyright © 2012 Xylem Inc.
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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
2.1.3 Further 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
3.3.3 Influence of permanently installed fixtures . . . . 3-3
3.3.4 Influence of gas bubbles and suspended
particles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.3.5 Short-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
5.2 Cleaning of the sensor shaft and ultrasonic transducer
surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
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6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
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
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IFL 70x IQ Overview
IQ Sensor Net Operating Manual
System
Operating
Manual
(Ring Binder)
IQ Sensor
Operating
Manual
MIQ Module
Operating
Manual
MIQ Terminal
Operating
Manual
Component Operating Manuals
1Overview
1.1 How to use this component operating manual
Structure of the
IQ S
ENSOR NET
operating manual
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Fig. 1-1 Structure of the IQ SENSOR NET operating manual
The IQ SENSOR NET operating manual has a modular structure like the
IQ S
ENSOR 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.
1 - 1
Overview IFL 70x IQ
1
2
3
4
5
6
1.2 Structure of the IFL 70x IQ sludge level sensor
Structure
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. Ultra-
sonic 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
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IFL 70x IQ Overview
Sludge blanket level
1
3
2
Ultrasonic
transducer
Bottom
Wiper (cleaning system) The IFL 700 IQ sensor has a mechanical wiper that effectively cleans
Fig. 1-3 Principle of the ultrasonic measurement
1 Transmitted ultrasonic waves
2 Echo reflected by the sludge blanket (short reflection interval)
3 Echo reflected by the bottom area (long reflection interval)
gas bubbles and dirt off the ultrasonic transducer. The wiper operates
contactless and is maintenance-free and wear-free.
1.3 Recommended 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".
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1 - 3
Overview IFL 70x IQ
1 - 4
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IFL 70x IQ Safety instructions
2 Safety instructions
2.1 Safety information
2.1.1 Safety 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.
2.1.2 Safety 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.
2.1.3 Further 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 S
tem (power packs, controller, accessories)
ENSOR NET sys-
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Safety datasheets of calibration and maintenance equipment (e.g.
cleaning solutions).
2 - 1
Safety instructions IFL 70x IQ
2.2 Safe operation
2.2.1 Authorized use
The authorized use of the IFL 70x IQ consists of its use as a sludge
level sensor in the IQ S
the product according to the instructions and technical specifications
given in this operating manual is authorized (see chapter 7 T
DATA). Any other use is considered unauthorized.
2.2.2 Requirements 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.
ENSOR NET. Only the operation and running of
ECHNICAL
The product may only be operated under the environmental condi-
tions mentioned in this operating manual.
The product may not be opened.
2.2.3 Unauthorized 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 T
ECHNICAL DATA).
2 - 2
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IFL 70x IQ Commissioning
3 Commissioning
3.1 IQ SENSOR NET system requirements
Software statuses of the
controller and terminal
components
The operation of the IFL 70x IQ requires the following software versions in the IQ S
ENSOR NET:
MIQ/MC2 Controller software: Version 3.35 or higher
MIQ/TC 2020 XT Terminal software: Version 3.35 or higher
3.2 Scope of delivery
Sludge level sensor IFL 700 IQ or IFL 701 IQ
Operating manual
3.3 Installation
3.3.1 General 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 S
ENSOR 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.
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3 - 1
Commissioning IFL 70x IQ
Immersion depth
(= 0.1 m)
Water
depth
Sludge level
Depth of the
sludge level
Height of the
sludge level
Vertical
installation
Wall
Bottom of the basin
Immersion depth
Dead zone
(= 0.4 m)
Measurement cone approx. 7°
(half-value angle)
free of fixtures and obstacles
Minimum distance
from basin wall
= 0.2 m + 0.05 * (water depth - immersion depth in m)
3.3.2 General installation conditions
3 - 2
Fig. 3-1 Ideal installation environment
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IFL 70x IQ Commissioning
Sensor installation The following conditions should always be met:
Vertical
Sufficient distance from the basin wall (minimum distance, see for-
mula 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).
3.3.3 Influence 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.
3.3.4 Influence 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.
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3 - 3
Commissioning IFL 70x IQ
3.3.5 Short-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 measur-
ing 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.
3.3.6 Connecting the sensor
Connection cable 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 S
ENSOR NET accessories is given in the YSI cata-
log 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 I
NSTALLATION of the IQ SENSOR NET system operating
manual.
Are the plug
connections dry?
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 S
ENSOR NET accessories is given in the YSI
catalog and on the Internet.
Connecting the sensor
to the sensor
connection cable
3 - 4
1 Take the protective caps off the plug connections of the sensor
and the SACIQ (SW) sensor connection cable and keep them
safe.
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