Xylem TB500 User Manual
Global Water
OWNER’S MANUAL
TB500 Series Turbidimeter
11390 Amalgam Way
Gold River, CA 95670
Phone: 800-876-1172
Fax: 916-638-3429
Catalog No. 24034GW (2/07) E-Mail: globalw@globalw.com
Rev. 1.1 Website: www.globalw.com
Global Water Instrumentation
TB500 (2/07)
Rev. 1.0
Table of Contents
Section Page
Specifications.....................................................................................................1
1.0 Overview............................................................................................................2
1.1 The TB500 Series .................................................................................2
1.2 Unpacking and Inspection of the Instrument and Accessories .............3
1.3 The Display ...........................................................................................3
1.4 The Touch Pad ......................................................................................4
1.5 Vapor Purge...........................................................................................4
2.0 Safety .................................................................................................................4
3.0 Installation and Commissioning .......................................................................5
3.1 Mounting and Site Selection..................................................................5
3.2 Plumbing ..............................................................................................6
3.2.1 Drain Vent..................................................................................7
3.2.2 Wetted Materials........................................................................7
3.3 Electrical Connections ..........................................................................7
3.3.1 Power ........................................................................................8
3.3.2 RS-485 .....................................................................................8
3.3.3 Relays.........................................................................................8
3.3.4 4-20 mA ....................................................................................8
4.0 Operation ...........................................................................................................9
4.1 Routine Measurement ...........................................................................9
4.2 Security Access Feature.........................................................................9
5.0 Instrument Calibration ....................................................................................11
5.1 Calibration Standards ..........................................................................11
5.2 Calibration Procedures ........................................................................12
5.3 Calibration Error .................................................................................13
6.0 Instrument Offset ........................................................................................... 14
6.1 Indexing Calibration Cuvettes ............................................................15
6.2 Restoring Factory Settings...................................................................15
7.0 Instrument Configuration (CONFIG mode) ....................................................16
7.1 Selecting the Output (O/P) ..................................................................16
7.2 Setting the 4-20 mA.............................................................................16
7.3 Configuring the RS-485 Port ..............................................................17
7.4 Configuring the Alarms .......................................................................18
7.4.1 Alarm 1 ....................................................................................18
7.4.2 Alarm 2 ...................................................................................19
7.5 Offset Calibration.................................................................................19
TB500 (2/07)
Rev. 1.0
Table of Contents (continued)
Section Page
7.6 Enabling the Security Access...............................................................20
7.7 Extended Settings.................................................................................20
7.8 Speed of Response...............................................................................20
7.9 Displayed Resolution ..........................................................................21
7.10 LCD Backlight Brightness...................................................................21
7.11 Setting the Units...................................................................................22
7.12 Ultrasonic Cleaning .............................................................................22
7.13 RS- 485 Parameters..............................................................................22
7.14 Desiccant Alarm...................................................................................23
7.15 Saving Configuration Settings.............................................................23
8.0 Additional Features and Options ....................................................................24
8.1 Backlit LCD.........................................................................................24
8.2 Ultrasonic Cleaning .............................................................................24
8.3 RS-485 Output.....................................................................................25
8.3.1 Online SCADA .......................................................................25
8.3.2 Simple Communication ...........................................................25
8.3.3 Modbus Communication..........................................................26
8.4 Flow Alarm..........................................................................................26
8.5 Flow Controller....................................................................................26
8.6 Remote Panel Meter.............................................................................26
9.0 Troubleshooting & Maintenance ....................................................................27
9.1 TB500 Fault Detection.........................................................................27
9.2 System Fail Message ...........................................................................27
9.3 Diagnostic Chart .................................................................................28
9.4 Technical and Customer Assistance ...................................................28
10.0 Routine Maintenance.......................................................................................29
10.1 Cleaning the Flow Through Cuvette ...................................................29
10.2 Replacing or Installing the Desiccant Pouch ......................................29
10.3 Replacing the Source Lamp ................................................................29
11.0 Accessories and Replacement Parts List .........................................................30
12.0 Warranty .........................................................................................................31
TB500 (2/07)
Rev. 1.0
Specifications
Measurement Range
Accuracy
Resolution
Response Time
Display
Alarms
Analog Output
Communications Port
Maximum Water Pressure
Flow Rate
Operating Temperature
Wetted Materials
Sample Temperature Range
0 – 1000.0 NTU
±2% of reading or ±0.02 NTU below 40 NTU whichever is greater
±5% of reading above 40 NTU
0.0001 NTU (below 10 NTU)
Adjustable
Multi-Line Liquid Crystal Backlit Display
Two Programmable, 120-240VAC 2A Form C Relay
Powered 4-20 mA, 600 Ω drive
Bi-directional RS-485, Modbus
Integral pressure regulator rated 1380kPa (200 PSI.) Also refer to
Flow Rate
100 ml/min. – 1 liter/min. (.026-.26 Gal/min)
1°C – 50°C (34°F – 122°F)
Nylon, Borosilicate Glass, Silicon, Polypropylene, Stainless Steel
1°C – 50°C (34°F – 122°F)
Power Supply
Insulation Rating
Environmental Conditions
Enclosure Rating
Regulatory Compliance
And Certifications
Shipping Weight
Warranty
100 – 240 VAC, 47 – 63 Hz, 80VA
Double Insulated, Pollution Degree 2, Overvoltage Category II
Not recommended for outdoor use.
Altitude up to 2000 meters
Up to 95 % RH (non-condensing)
Designed to meet IP 66 /NEMA 4X
White Light Version compliant to U.S. EPA 180.1
Infrared Version compliant to ISO 7027
CE Approved, ETL listed to UL 61010B-1 &
ETL Certified to CSA 22.2 No. 1010-1-92
2.5 kg (5.5 lbs.)
1 Year from date of shipment
TB500 (2/07)
Rev. 1.0
1
1.0 Overview
The TB500 process turbidimeter allows for the measurement of the turbidity of process
water on-line. The White Light TB500 has been designed to meet the design criteria
specified by the US EPA 180.1 on turbidity measurement. The infrared TB500 was
designed to meet the design criteria specified in ISO 7027 and DIN 27027 for the
measurement of the turbidity of a sample. Both models have long life lamps.
Some models have ultrasonic cleaning. Refer to section 8.2 for more information.
1.1 The TB500 Series
The TB500 series instruments have a wide variety of options available. Refer to the table
below to determine which factory installed options are available.
Model # RS-485 Modbus Backlight Ultrasonic
Cleaning
TB502 WL Standard Standard Standard N/A 0-1000 Option
TB502 IR Standard Standard Standard N/A 0-1000 Option
TB504 WL Standard Standard Standard Standard 0-1000 Option
TB504 IR Standard Standard Standard Standard 0-1000 Option
Range
NTU
Flow
Alarm
TB500 (2/07)
Rev. 1.0
2
1.2 Unpacking and Inspection of the Instrument and Accessories
The table below indicates the items in the turbidimeter shipment.
Item Quantity
TB500 Turbidimeter c/w Field Terminal Box & Flow Through Assembly
Instruction Manual
Desiccant Pack
Cuvette (Single Pack)
Tubing Kit: 1-shutoff clamp
1-backpressure valve
2-connecting tubing with fittings for flow through assembly
1-drain vent screw (used in pressurized systems)
Remove the instrument from the packing carton. Carefully inspect all items to ensure that
no visible damage has occurred during shipment. If the items received do not match the
order, please immediately contact the local distributor or the Global Water’s Customer
Service department.
Note: The spare cuvette, TB502-CUV, is not included for models TB504-WL & TB504-IR.
In these models a special ultrasonic cuvette, TB500-UCUV, is provided. This cuvette
must be installed prior to operating the instrument.
1
1
1
1
1
1.3 The Display
Figure 1 illustrates all the items that can appear on the display. The upper row of the
display (1) is used for reporting the turbidity levels and to provide user guidance in the
customer setting routine. The lower row of the display (2) is used to communicate error
messages and provide user guidance. The display has two icons (3) that are used to
indicate the use of access code and offset mode. In addition, mode arrows (4) are used to
indicate the current instrument operating mode; AUTO (normal operation), CAL
(calibration) and CONFIG (configuration).
Figure 1 – Display used in the instrument.
All items used on the display are shown in this figure
TB500 (2/07)
Rev. 1.0
3
1.4 The Touch Pad
Figure 2 illustrates the touch pad. The touch pad has four buttons: MODE/EXIT, ↵, t,
and u. The MODE/EXIT button is used to cycle between the three operational modes of
the instrument: CAL, CONFIG, and AUTO (Measurement) mode. The ↵ button enters
the option (or mode that is highlighted or chosen. The tand u buttons are used to change
settings.
1.5 Vapor Purge
The TB500 is equipped with a continuous vapor purge system. A replaceable desiccant
pouch in the lower portion of the instrument dries the air. System heat is used to warm the
air. A fan inside the instrument continuously circulates heated dry air around the optical
well and the flow through cuvette. This feature eliminates the need for a dry purge line.
The TB500 monitors the replaceable desiccant pouch condition continuously. The LCD
display will show DESC on the lower line in the event that the desiccant pouch needs
replacement. Replacement desiccant pouches are available from Global Water or the local
representative (Model # TB500-DR). Refer to section 10.2 Replacing or installing the
Desiccant Pouch.
The desiccant can activate an alarm to notify the operator of a saturated desiccant. See
section 7.14 Desiccant Alarm.
2.0 Safety
This manual contains basic instructions that must be followed during the commissioning,
operation, care and maintenance of the instrument. The safety protection provided by this
equipment may be impaired if it is commissioned and/or used in a manner not described in
this manual. Consequently, all responsible personnel must read this manual prior to
working with this instrument.
Figure 2: Touch Pad
In certain instances Notes, or helpful hints, have been highlighted to give further
clarification to the instructions. Refer to the Table of Contents to easily find specific
topics and to learn about unfamiliar terms.
TB500 (2/07)
Rev. 1.0
4
3.0 Installation and Commissioning
Prior to use for the first time, the supplied desiccant pouch will need to be installed. Refer
to section 10.2 Replacing or Installing the Desiccant Pouch.
3.1 Mounting & Site Selection
The instrument is designed for wall mounting. If wall mounting is not practical, the
instrument can be mounted on any suitable level surface. For ease of service there should
be about 20 cm (8”) free area above the instrument; this will ensure enough room for
calibration and cuvette maintenance. Choose a location that is easily accessible for
operation and service and ensure that the front display rests at eye level. The overall
mounting dimensions of the instrument are shown in Figure 3. The recommended
mounting screws are M6 (¼”) for the instrument enclosure and M4 (#8) for the field
terminal box. The TB500 is designed to have the field terminal box cradled under the
sensor portion of the instrument. It is recommended that the field terminal box be mounted
first, and then the rest of the instrument be mounted on top. The template on the last page
of this manual may be used to establish mounting hole locations.
It is critical that the instrument be mounted as close as possible to the sampling point to
ensure a quick response time (within 2-3 meters (6-10 ft) of the sampling point).
TB500 (2/07)
Rev. 1.0
Figure 3: Overall Mounting Dimensions of the Instrument
5
3.2 Plumbing
The recommended plumbing for the instrument is shown in Figure 4. The instrument is
designed to require very little head pressure to operate; around 6.9kPa (1 PSI). The flow
through cuvette is rated for a flow of 100ml/min. – 1 liter/min. (0.026-0.26Gal/min). The
integral pressure regulator is rated for a maximum pressure of 1380 kPa (200 PSI.). The
maximum allowable fluid temperature is 50°C (122°F).
Figure 4: Recommended Plumbing for the Instrument
The instrument is equipped to be plumbed using 4.75 mm (3/16”) ID, 8 mm (5/16”) OD
flexible tubing. Opaque tubing should be used if the tubing will be exposed to sunlight, to
prevent algae growth.
In figure 4, there are two flow devices shown. The one on the input side is a shutoff clamp
used during cuvette maintenance. The other device is a backpressure valve. Backpressure
may be required to prevent air from coming out of solution, which may be observed as
tiny air bubbles.
TB500 (2/07)
Rev. 1.0
6
3.2.1 Drain Vent: The TB500 has been fitted with a drain vent in the “OUT” bulkhead
fitting. This fitting allows for atmospheric equalization, thus helping to alleviate bubble
formation in the cuvette. Refer to Figure 4.
Upon initial flow minor leakage may occur through the drain vent. This will subside once
normal flow is established.
For some high pressure systems, where the vent hole continuously leaks, a 6:32 seal screw
is provided which should be inserted into the vent hole and tightened.
The sensor drain tubing should be routed to a suitable drain. It is not recommended to
reintroduce the drain sample to the process stream.
3.2.2 Wetted Materials: Global Water accepts no responsibility for damage caused by
the introduction of vapors, fluids or other materials into the instrument process stream
which is not compatible with the instrument’s wetted materials. A list of the wetted
materials can be found in the specifications on page 1 of this manual.
3.3 Electrical Connections
All of the electrical connections to the instrument are made through the field terminal box,
which should be located directly under the sensor portion of the instrument. The
connections are labeled within the terminal box and are self-descriptive (see Figure 5).
Please follow all local and government recommendations and methods for installation of
electrical connections to and between the instrument and other peripheral devices.
Plugs are inserted into the alarm and 4-20mA/RS-485 cable bulkheads when shipped, to
ensure a watertight seal. These plugs should be removed and discarded when cabling to
either of these connections.
The power cable bulkhead will accept cable diameters from 5.8mm (.230 in.) up to 10 mm
(.395 in.). All terminals are designed to accept wires in the range of 14-28 AWG. All
wires should be stripped to a length of 6 mm (¼”). A strain relief strap is provided to
reduce tension on the power terminals.
It is the user’s responsibility to assure that the watertight seal is maintained after the
terminal box has been wired for operation. If any of the bulkheads are not tightened
properly around a cable or plug, the ratings of the instrument will be jeopardized and there
is a possibility of creating a shock hazard.
Note: Only qualified electricians should be allowed to perform the installation of the
instrument as it involves a line voltage that could endanger life.
TB500 (2/07)
Rev. 1.0
7
Loading...