SIGRIST AquaScat 2 WTM Series User manual

Document number: 11778E
Version: 1
Valid from: 2012-04-01
INSTRUCTION MANUAL
AquaScat 2
Versions: WTM / WTM A / HT
Turbidimeter with non-contact
measuring cell

Copyright© SIGRIST-PHOTOMETER AG, subject to technical changes without notice 7/2017
SIGRIST-PHOTOMETER AG
Hofurlistrasse 1
CH-6373 Ennetbürgen
Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.photometer.com

INSTRUCTION MANUAL AquaScat 2
11778E/1 i
Content
1. General notes to the user ..........................................................................................1
1.1. Purpose of the Instruction Manual....................................................................1
1.2. Target group...................................................................................................1
1.3. Additional documentation ...............................................................................1
1.4. Copyright stipulations......................................................................................1
1.5. Storage location of the Instruction Manual .......................................................2
1.6. Meaning of the safety symbols.........................................................................2
1.7. Meaning of the safety pictograms ....................................................................2
1.8. Proper use ......................................................................................................3
1.9. User requirements...........................................................................................3
1.10. Conformity .....................................................................................................3
1.11. Use restrictions................................................................................................3
1.12. Dangers when not used properly......................................................................4
2. Instrument overview..................................................................................................5
2.1. Measuring station with optional accessory parts ...................................................5
2.2. Identification AquaScat 2..................................................................................6
2.3. Scope of supply and accessory parts.................................................................7
2.4. Technical data.................................................................................................9
3. General safety pointers............................................................................................11
3.1. What to do in an emergency..........................................................................11
3.2. Dangers when using properly.........................................................................11
3.3. Warning and danger symbols on the instrument ................................................12
4. Mounting the measuring device...............................................................................13
4.1. Location evaluation .......................................................................................13
4.2. Mechanical mounting of the photometer .......................................................13
4.3. Mounting the docking station........................................................................15
4.4. Remove optics unit, place on docking station..................................................16
4.5. Mounting the sample connections..................................................................18
4.6. Installation of the optional accessory parts......................................................21
5. Electrical installation ................................................................................................22
5.1. Safety pointers for the installation ..................................................................22
5.2. Installation procedure....................................................................................23
5.3. Connecting the customer connections............................................................24
5.4. Connection of the optional power supply .......................................................26
6. Initial start-up .........................................................................................................28
7. Operation ...............................................................................................................31
7.1. Operation basics............................................................................................31
7.2. Control components in normal operation .......................................................31
7.3. Activating and deactivating the screen lock.....................................................35
7.4. Display in normal operation ...........................................................................36
7.5. Switching to service operation........................................................................37
7.6. Control components in service operation........................................................38
7.7. Setting the operating language......................................................................41
7.8. Setting the current outputs............................................................................42
7.9. Setting the limits ...........................................................................................43
7.10. Configuring the flow meter with limit switch ..................................................45
7.11. Setting the outputs (relay outputs 1 or 2) .......................................................45
7.12. Setting the date and time ..............................................................................46
7.13. Setting or changing the access code...............................................................47
7.14. Back up configured data................................................................................47
8. Servicing.................................................................................................................48
8.1. Servicing schedule.........................................................................................48

INSTRUCTION MANUAL AquaScat 2 General notes to the user
ii 11778E/1
8.2. Check flow rate and cleanliness .....................................................................49
8.3. Manual adjustment .......................................................................................52
8.4. Automatic adjustment for AquaScat 2 WTM A................................................55
8.5. Clean parts which come into contact with water ................................................56
8.6. Check and clean optional accessory parts .......................................................59
8.7. Clean the optics ............................................................................................60
8.8. Replace air filter ............................................................................................65
8.9. Change battery .............................................................................................66
9. Troubleshooting......................................................................................................68
9.1. Pinpointing the cause of a malfunction...........................................................68
9.2. Replace fine-wire fuse ...................................................................................69
9.3. Warning and error messages..........................................................................70
10. Customer service information ..................................................................................73
11. Decommissioning & storage.....................................................................................74
12. Packaging & transport .............................................................................................75
13. Disposal..................................................................................................................76
14. Spare parts .............................................................................................................77
15. Appendix................................................................................................................78
15.1. Servicing log .................................................................................................79
16. Index......................................................................................................................80
Terms used in this document (glossary)
Please refer to our website for specialist terms: www.photometer.com

General notes to the user INSTRUCTION MANUAL AquaScat 2
11778E/1 1
1. General notes to the user
1.1. Purpose of the Instruction Manual
This Instruction Manual provides the user with helpful information about the entire life cycle
of the photometer. Please read through it completely before putting the instrument into op-
eration.
1.2. Target group
The Instruction Manual is intended for all persons who are responsible for the operation and
maintenance of the instrument.
1.3. Additional documentation
DOC. NO.
TITLE
CONTENT
11779E
Brief Instructions
The most important functions and com-
plete menu structure
11780E
Reference Manual
More extended menu functions and work
steps for advanced users.
11880E
Data sheet
Descriptions and technical data about
the photometer.
11781E
Service Manual
Repair and conversion instructions for ser-
vice engineers.
11888DEF
Declaration of conformity for
AquaScat WTM / WTM A / HT
Compliance with the underlying directives
and standards.
11887DEF
Declaration of conformity SP-
C039 (mains device)
Compliance with the underlying directives
and standards.
1.4. Copyright stipulations
The Instruction Manual has been written by SIGRIST-PHOTOMETER AG. Copying or modify-
ing the content or providing this document to third parties is permitted only with the express
written consent of SIGRIST-PHOTOMETER AG.

INSTRUCTION MANUAL AquaScat 2 General notes to the user
2 11778E/1
1.5. Storage location of the Instruction Manual
The Instruction Manual is a component of the product and should always be close at hand.
The most recent version (in color) of the Reference Manual can be downloaded at
www.photometer.com (one-time registration).
It can also be ordered from our representative in your country. Section 10
1.6. Meaning of the safety symbols
All danger symbols used in the Instruction Manual are explained below:
Danger due to electrical shock that may result in serious bodily injury or death.
Non-observance of this danger warning may lead to electrical shocks or death.
Danger due to explosion that may result in serious bodily injury or death.
Non-observance of this notice may cause explosions resulting in serious material damage and
death.
Warning about bodily injury or hazards to health with long-term effects.
Non-observance of this warning may lead to injuries with possible long-term effects.
Notice about possible material damage.
Non-observance of this notice may cause material damage to the instrument and its periph-
erals.
1.7. Meaning of the safety pictograms
All pictograms used in the Instruction Manual are explained below:
Additional information about the current topic.
Practical procedures when working on the photometer.
Manipulations on the touchscreen.
Work on the PC.
DANGER!
EXPLOSION
HAZARD!
WARNING!
CAUTION!

General notes to the user INSTRUCTION MANUAL AquaScat 2
11778E/1 3
1.8. Proper use
The AquaScat 2 is designed for measuring turbidity during water treatment and is optimized
for the values that occur in water treatment plants with regard to measurement span and
environmental conditions.
1.9. User requirements
The instrument may be operated only by trained technical personnel.
The instrument may be operated only by persons who have read and understood the
content of the Instruction Manual.
1.10. Conformity
Current technological principles were followed in designing and manufacturing the photom-
eter. They comply with the applicable directives concerning safety and duty to take due care.
The system meets the requirements applicable within the European Union (EU) for electro-
magnetic compatibility (EMC) and low voltage directives (LVD) and has the CE mark.
Please refer to the separate declaration of conformity for details (document 11888DEF).
1.11. Use restrictions
Explosion hazard during operation in an inappropriate environment.
It is not permitted to operate the instrument in explosion hazardous areas or rooms.
It is not permitted to use the instrument with explosive sample substances.
EXPLOSION
HAZARD!

INSTRUCTION MANUAL AquaScat 2 General notes to the user
4 11778E/1
1.12. Dangers when not used properly
Operation when not used properly.
Improper use can cause injuries to persons, process-related consequential damage and dam-
age to the photometer and its peripherals.
In the following cases the manufacturer cannot guarantee the protection of persons and the
instrument and therefore assumes no legal responsibility:
The instrument is used in a way not included in the described area of application.
The instrument is not properly mounted.
The instrument is not installed in accordance with the Instruction Manual.
The instrument has been operated with accessory parts which SIGRIST-PHOTOMETER
AG has not expressly recommended.
Improper changes to the instrument have been performed.
The instrument has not been operated within the specifications, in particular concern-
ing pressure and temperature.
DANGER!

Instrument overview INSTRUCTION MANUAL AquaScat 2
11778E/1 5
2. Instrument overview
2.1. Measuring station with optional accessory parts
Figure 1: Measuring station with optional accessory parts

Photometer with non-contact
measuring cell Sectio n 2.3/2.4

Docking station Section 4.3

Deaeration tube

Flow meter with optional limit switch

Regulator valve

Venting hose

Sample inlet of the level control

Sample overflow of the level control

INSTRUCTION MANUAL AquaScat 2 Instrument overview
6 11778E/1
2.2. Identification AquaScat 2
The photometer is fitted with a rating plate:
Figure 2: Rating plate on the AquaScat 2

Manufacturer

Country of origin

Product name

Serial number

Date of manufacture

Service voltage

Frequency range

Power

Observe the Instruction Manual

Disposal information Section 13

Instrument overview INSTRUCTION MANUAL AquaScat 2
11778E/1 7
2.3. Scope of supply and accessory parts
PCS.
ART. NO.
NAME
VIEW
VARIANT
1
118992
AquaScat 2 WTM 24
VDC
For high resolution /
Low turbidity
1
118993
AquaScat 2 WTM A
24 VDC
With automatic ad-
justment for high reso-
lutions / Low turbidity
1
118994
AquaScat 2 HT 24
VDC
For high turbidities
1
Instruction Manual
German 11778D
English 111778E
French 11778F
1
Reference Manual
German 11780D
English 11780E
1
Brief Instructions
German 11779D
English 111779E
French 11779F
PCS.
ART. NO.
NAME
VIEW
VARIANT
1
118788
Long level control
Section 2.1
1
118778
Deaeration tube
Section 2.1
1
118811
Hose kit for long level con-
trol
Section 2.1
1
118812
Hose kit for long level con-
trol with deaeration tube
1
116786
Flow meter zu AquaScat (2)
WTM/HT
Section 2.1
1
116789
Flow meter with limit switch
for AquaScat (2) WTM/HT
Section 2.1
1
118411
Flow meter with regulating
valve for AquaScat (2)
Section 2.1
1
118415
Flow meter with limit switch
and regulating valve for Aq-
uaScat (2)
Section 2.1
1
116708
Checking unit for AquaScat
(2) WTM/HT
Section 8.3
Manual solid
matter reference
Scope of supply
Documentation
Optional accessory
parts

INSTRUCTION MANUAL AquaScat 2 Instrument overview
8 11778E/1
PCS.
ART. NO.
NAME
VIEW
VARIANT
1
119102
Profibus DP interface print
for AquaScat 2
Reference Manual
1
119103
Modbus RTU interfaces print
for AquaScat 2
Reference Manual
1
119041
Current output 4 times for
AquaScat 2
1
119045
24 VDC power supply 20 W
IP66, input 100-240 VAC
1
119082
I/O module for AquaScat 2
1
119081
Ethernet IP66 for AquaS-
cat 2

Instrument overview INSTRUCTION MANUAL AquaScat 2
11778E/1 9
2.4. Technical data
TURBIDITY MEASUREMENT
VALUES
Measuring principle
Scattered light measurement
Measurement span
0 .. 4000 FNU
Sample media
Water
Wavelength
880 nm, compliant with DIN EN ISO 7027
Radiation class
LED device of Class 1 according to EN 60825-1
Measuring angle
90°
AQUASCAT 2 WTM
VALUES
Resolution
0.001 FNU
Reproducibility
0 .. 10 FNU: ±0.002 FNU, or ±1% full scale at flow rate
2.5 .. 7 l/min (±3% at flow rate 1.3 .. 2.5 l/min)
10 .. 4000 FNU: ±1.5% at flow rate 3.5 .. 7 l/min
Repeatability
0.001 FNU or ±0.1% full scale
Service voltage
18-30 VDC
Power consumption
8 W
Curr. outputs
2 x 0/4 .. 20 mA, galvanically isolated to max. 50 V relative
to ground
Burden
max. 600 
Relay contacts
2 relay contacts 250 V, 4 A
Control unit
Integrated control unit
Measuring ranges
8 ranges between 0 .. 0.1 and 0 .. 4000 FNU freely configu-
rable
Housing
Plastic (ABS)
Dimensions
For detailed dimension sheet see Section 15
Weight
approx. 3.2 kg
Protection degree
IP54 (only electronics)
Maximum operating altitude
3000 m above sea level for instruments which are not oper-
ated with extra low voltage (mains, relays).
Ambient temperature
0 .. 50°C
Ambient humidity
0 .. 95% rel. humidity, non-condensing
Interface
Ethernet, SD card (for logging, SW update, diagnostics)
Modbus TCP, optional Modbus RTU or Profibus DP
Terminal size for signal cable
Cable holder for Ø of 0.08 mm2to 1.5 mm2
Terminal size for supply and
relays
Cable holder for Ø of 0.08 mm2to 2.5mm2

INSTRUCTION MANUAL AquaScat 2 Instrument overview
10 11778E/1
AQUASCAT 2 WTM
VALUES
Display
¼ VGA with touchscreen
Resolution: 320 x 240 pixels with 3.5” diagonal
AQUASCAT 2 WTM A
VALUES
Automatic adjustment
Photometer with automatic adjustment
Other data identical to AquaScat 2 WTM
AQUASCAT 2 HT
VALUES
Resolution
0.1 FNU
Reproducibility
0 .. 10 FNU: ±0.1 FNU, or ±1% full scale at flow rate
2.5 .. 7 l/min (±3% at flow rate 1.3 .. 2.5 l/min)
10 .. 4000 FNU: ±1.5% at flow rate 3.5 .. 7 l/min
Repeatability
0.1 FNU or ±0.1% full scale
Measuring ranges
8 ranges between 0 .. 10 and 0 .. 4000 FNU freely configu-
rable
Other data identical to AquaScat 2 WTM
NON-CONTACT
MEASURING CELL
VALUES
Material
Inlet tube: stainless steel 1.4435 or PVC
Drain: PVC
Sample pressure
Pressureless
Sample temperature
0 .. 40°C (not more than 30°C over the ambient tempera-
ture)
Sample flow
Turbidity
Flow rate
< 0.5 FNU
1.3 .. 3.5 l/min
Sample flows in the range of 1.3 ..
2.5 l/min are possible; please refer to Sec-
tion 8.2.1.
0.5 .. 10 FNU
2.5 .. 3.5 l/min
> 10 FNU
min. 3.5 .. 7.0 l/min
Connections
Inlet tube: 12 mm
Drain tube: 25 mm
DEAERATION TUBE
(OPTIONAL)
VALUES
Material
Polycarbonate
Intake connection
Ø 12 mm
Outlet connection
Ø 12 mm

General safety pointers INSTRUCTION MANUAL AquaScat 2
11778E/1 11
3. General safety pointers
3.1. What to do in an emergency
What to do in an emergency:
SIGRIST-PHOTOMETER AG instruments have no On/Off switch. This is the responsibility of
the customer. Before commissioning, clarify the following points:
Clarify the position of the On/Off switch and the way it works.
Where and how the sample supply can be stopped.
Who the responsible authorities are.
MEASURE
NOTES
1.
Interrupt the service voltage to the
measuring station.
2.
Interrupt sample supply.
3.
Secure emergency site.
4.
Notify responsible institution.
3.2. Dangers when using properly
Electrical shock due to damaged instrument or cabling.
The instrument may be operated only when the cables are undamaged.
The instrument may be operated only if it has been properly installed or repaired.
Life threatening voltage inside the instrument.
The instrument must never be operated when the front cover is removed.
The instrument may be opened only by trained personnel.
Damage due to incorrect service voltage.
The instrument may be connected only to voltage sources as specified on the rating plate.
CAUTION!
PROCEDURE IN
AN
EMERGENCY!
DANGER!
DANGER!
WARNING!

INSTRUCTION MANUAL AquaScat 2 General safety pointers
12 11778E/1
Property damage due to escaping sample.
The instrument must never be connected to leaking sample tubes and operated.
Damage to the touchscreen due to strong mechanical pressure.
Do not apply excessive pressure to the touchscreen (touch lightly with your fingertip).
Do not use pointed objects for manipulations on the touchscreen.
Use of aggressive chemicals.
Do not use aggressive chemicals or cleaning agents when cleaning.
Thoroughly clean the instrument with a neutral cleaning agent if it has come into con-
tact with aggressive chemicals.
If the instrument changes hands, always include the Instruction Manual.
If the Instruction Manual is lost, you can request a replacement.
Registered users can download the current version at www.photometer.com.
According to the risk assessment of the applied safety directive DIN EN 61010-1, there re-
mains the risk of a faulty measuring value display. This risk can be reduced with the follow-
ing measures:
Use a flow meter to monitor the flow rate of the instrument.
Use an access code to prevent unauthorized persons from changing parameters.
Perform the specified servicing duties.
3.3. Warning and danger symbols on the instrument
There are no warning or danger symbols on the instrument.
Users must ensure that they observe the safety measures as specified in the Instruction Man-
ual at all times when working with the instrument and its peripheral equipment.
The following sections must be internalized:
Section 1.6
Section 1.8
Section 3
Observe local safety pointers when performing the described procedures.
CAUTION!
CAUTION!
CAUTION!
CAUTION!
WARNING!

Mounting the measuring device INSTRUCTION MANUAL AquaScat 2
11778E/1 13
4. Mounting the measuring device
4.1. Location evaluation
A note about selecting the right installation location:
The sample feed should be as short as possible so that changes in the reading are dis-
played without delay.
There should be no vibrations on the mounting surface. Vibrations cause measuring er-
rors and can permanently damage the unit.
The photometer and its peripherals should be easily accessible to facilitate inspection
and servicing duty.
Make sure that the photometer is not exposed to direct sunlight. This may cause signifi-
cant deviations in the reading.
4.2. Mechanical mounting of the photometer
The dimensional specifications according to the mounting drawings in the Appendix must be
observed when mounting the photometer. Section 15
WORKSTEP
PROCEDURE
1.
Fit the mounting bracket.
Screw on the mounting bracket at the intended position.
The mounting bracket must be horizontally aligned with
a spirit level.

INSTRUCTION MANUAL AquaScat 2 Mounting the measuring device
14 11778E/1
WORKSTEP
PROCEDURE
2.
Fasten the photometer onto
the pre-mounted mounting
bracket.
2.1: Position the photometer on the pre-mounted
mounting bracket and pay attention to the two position-
ing pins (circles).
2.2: Screw the photometer onto the mounting bracket.
3.
Remove the optics unit of
the photometer.
Section 4.4
4.
Align the photometer.
4.1: Loosen the fixing nut (X) of the support (Y).

Mounting the measuring device INSTRUCTION MANUAL AquaScat 2
11778E/1 15
WORKSTEP
PROCEDURE
4.2: By turning the support (Y, picture above) adjust the
instrument using a spirit level until it is vertical.
Use the measuring cell housing as a support surface for
the spirit level.
4.3: Tighten the fixing nut (X) of the support (Y).
4.3. Mounting the docking station
Mount the docking station close to the photometer using two fastening screws.

INSTRUCTION MANUAL AquaScat 2 Mounting the measuring device
16 11778E/1
4.4. Remove optics unit, place on docking station
Figure 3: Fasten optics unit to docking station:

Measuring cell component

Optics unit

Docking station Section 4.3

Knurled screw for fastening the op-
tics unit