ATI Technologies Q46F/82 User manual

O & M Manual
Model Q46F/82
Direct Fluoride Monitor
Home Office European Office
Analytical Technology, Inc. ATI (UK) Limited
6 Iron Bridge Drive Unit 1 & 2 Gatehead Business Park
Collegeville, PA 19426 Delph New Road, Delph
Phone: [phone] Saddleworth OL3 5DE
610-917-0991 Phone: [phone]
Fax: [phone] Fax: + 44 (0)1457-874-468
Email: [email protected]om Email: [email protected]

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Table of Contents
PART 1 - INTRODUCTION..................................4
1.1 General.......................................................4
1.2 Q46F/82 System Specifications.................6
1.3 Q46F/82 Performance Specifications ........7
PART 2 –MECHANICAL INSTALLATION......8
2.1 General.......................................................8
2.2 Wall Mount Bracket ..................................9
2.3 Panel Mount, AC Powered Monitor ........11
2.4 Flowcell Mounting...................................12
2.5Fluoride Sensor........................................13
PART 3 –ELECTRICAL INSTALLATION......14
3.1 General.....................................................14
3.3 Q46F Sensor Wiring................................16
3.4 Relay Wiring............................................17
3.5 Low Power Relay Connection .................17
PART 4 –CONFIGURATION.............................18
4.1 User Interface...........................................18
4.11 Keys.....................................................19
4.12 Display.................................................19
4.2 Software...................................................20
4.21 Software Navigation...........................21
4.22 Measure Menu [MEASURE]...............23
4.23 Calibration Menu [CAL] .......................24
4.24 Configuration Menu [CONFIG] .........24
4.25 Control Menu [CONTROL] ...............26
4.26 Diagnostics Menu [DIAG].....................30
PART 5 –CALIBRATION...................................33
5.1 Calibration ...............................................33
5.11 Slope Adjustment.................................33
5.12 Single Point Calibration.......................34
5.2 Temperature Calibration..........................34
PART 6 –PID CONTROLLER DETAILS.........36
6.1 PID Description.......................................36
6.2 PID Algorithm .........................................36
6.3 Classical PID Tuning...............................38
6.4 Manual PID Override Control .................38
6.5 Common PID Pitfalls...............................38
PART 7 –SYSTEM MAINTENANCE ...............40
7.1 General.....................................................40
7.2 Analyzer Maintenance.............................40
7.3 Sensor Maintenance.................................40
PART 8 –TROUBLESHOOTING ......................41
8.1 General.....................................................41
8.2 External Sources of Problems..................41
8.3 Analyzer Tests .........................................41
8.4 Display Messages ....................................42
SPARE PARTS......................................................43

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Table of Figures
FIGURE 1–TYPICAL FLUORIDE MONITORING SYSTEM.......................................................................................5
FIGURE 2-Q46F ENCLOSURE DIMENSIONS .....................................................................................................9
FIGURE 3-WALL OR PIPE MOUNT BRACKET .....................................................................................................9
FIGURE 4-WALL MOUNTING DIAGRAM...........................................................................................................10
FIGURE 5-PIPE MOUNTING DIAGRAM ............................................................................................................10
FIGURE 6-PANEL MOUNT CUT-OUT ..............................................................................................................11
FIGURE 7-FLUORIDE FLOWCELL ...................................................................................................................12
FIGURE 8-FLUORIDE SENSOR.......................................................................................................................13
FIGURE 9-LINE POWER CONNECTION............................................................................................................15
FIGURE 10 -SENSOR AND CONTROL CONNECTION .........................................................................................16
FIGURE 11 -RELAY CONTACTS......................................................................................................................17
FIGURE 12 -USER INTERFACE .......................................................................................................................18
FIGURE 13 -SOFTWARE MAP.........................................................................................................................22
FIGURE 14 -CONTROL RELAY EXAMPLE.........................................................................................................29
FIGURE 15 -ALARM RELAY EXAMPLE.............................................................................................................29
FIGURE 16 -Q46 ISA PID EQUATION.............................................................................................................36
FIGURE 17 -Q46 DISPLAY MESSAGES ...........................................................................................................42

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Part 1 - Introduction
1.1 General
The Q46F/82 Direct Fluoride System is an on-line monitoring system designed for the continuous
measurement of fluoride ion in solution. The system is designed to measure fluoride ion directly
without the use of chemical buffers and is suitable for potable water systems with stable pH and
conductivity. It is especially useful for applications where the use of chemicals is undesirable.
The full scale operating range of the system may be selected by the user for 0-20.00 PPM, 0-
200.0 PPM, or 0-2000 PPM. The analog output signal may be spanned for smaller ranges within
the overall operating ranges. Because water is flowing through the flowcell at a low rate, this unit
cannot be exposed to temperatures below 0C.
The basic sensing element used in the monitor is a fluoride ion selective electrode (ISE). This
sensor contains a lanthanum fluoride crystal that generates a voltage proportional to the activity
of fluoride ion in solution. A silver/silver chloride reference electrode contained in the same
sensor body provides the second half of the measurement cell. Because ISE electrodes respond
to activity rather than concentration, the response is slightly affected by changes in sample pH
and conductivity, but these effects are quite small on samples from relatively stable water sources
such as well water.
The fluoride monitoring system includes 2 parts, an electronic display unit (panel or wall mount)
and a sensor/flowcell assembly. A typical fluoride system installation is shown in Figure 1. The
measured fluoride concentration is displayed on a backlit LCD on the front of the instrument. Two
4-20 mA outputs are provided for recording or data logging of fluoride concentration and
temperature. Alarm contacts are also standard in the electronic package and may be used either
for simple control schemes or for signaling operators of abnormal operating conditions.

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Figure 1 –Typical Fluoride Monitoring System

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1.2 Q46F/82 System Specifications
Displayed Parameters Main input, 0.01 ppm to 2000 ppm dissolved fluoride
Sensor mV
Sample Temperature
Loop current, 4.00 to 20.00 mA
Sensor slope & zero offset
Model number and software version
PID Controller Status
Main Parameter Ranges Manual selection of one of the following ranges,
0.00 to 20.00 ppm
0.0 to 200.0 ppm
0 to 2000 ppm
Display 0.75” (19.1 mm) high 4-digit main display with sign
12-digit secondary display, 0.3" (7.6 mm) 5x7 dot matrix.
Integral LED back-light for visibility in the dark.
Ambient Temperature Analyzer Service, 5 to 40°C (41 to 104ºF)
Storage, -5 to 70°C (-22 to 158ºF)
Ambient Humidity 0 to 95%, non-condensing.
EMI/RFI Influence Designed to EN 61326-1
Output Isolation 600 V galvanic isolation
Filter Adjustable 0-9.9 minutes additional damping to 90% step input
Sensor Combination F-/ Reference Ion Selective Electrode
Sensor Materials Glass, Lanthanum Fluoride, Ryton
Interconnect Cable 10 ft. (6.15 meter) standard
Q46F Power: 100-240 VAC ±10%, 50/60 Hz
Optional: 12-24 VDC
Q46F Enclosure: NEMA 4X, IP66, polycarbonate, stainless steel hardware
HWD: 4.9" (124 mm) x 4.9" (124 mm) x 5.5" (139 mm)
Flammability rating: UL 94 V-0
Mounting Options Wall mount bracket standard.
Panel mount adapter optional for Q46F Only
Relays, Electromechanical Three SPDT, 6 amp @ 250 VAC, 5 amp @ 24 VDC contacts.
Software selection for setpoint, phase, delay, deadband, hi-lo
alarm, and failsafe. A-B indicators on main LCD.
Low Power Relays: Three SPST, 1 amp @ 24 VDC. Software selection for
setpoint, phase, delay, deadband, hi-lo alarm, and failsafe.

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Analog Outputs Two 4-20 mA outputs. Output one programmable for PPM F-or
PID. Output 2 programmable for PPM or temperature.
Maximum load 500 Ohms for each output. Outputs ground
isolated and isolated from each other.
Digital Communications Profibus-DP, Modbus-RTU. More versions pending.
(Optional) See Q46 Digital Communications Manual for Specifications.
Sample Flowrate 1 GPH Minimum (60 ml/min.)
5 GPH Maximum (315 ml/min.)
Weight 4 lbs. (1.8 Kg.)
1.3 Q46F/82 Performance Specifications
Accuracy +/- 0.1 PPM or 0.2% of selected range
Repeatability +/- 0.05 PPM or 0.1% of selected range
Sensitivity 0.01 PPM
Non-linearity 0.2% of selected range
Warm-up Time 3 seconds to rated performance (electronics only)
Sensor requires 1 hour stabilization at start-up
Supply Voltage Effects ± 0.05% span
Instrument Response Time 60 seconds to 90% of step input at lowest damping
Equipment bearing this marking may not be discarded by traditional methods in the
European community after August 12 2005 per EU Directive 2002/96/EC. End
users must return old equipment to the manufacturer for proper disposal.

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Part 2 – Mechanical Installation
2.1 General
Mechanical installation of a Q46F/82 fluoride system involves mounting of the Q46F electronic
assembly, mounting of the sample flowcell, and connection of sample and drain tubing. If the
optional panel assembly has been supplied, the system comes assembled with flow controls to
allow operators to properly adjust sample flow to a low value.
Proper planning of the installation will benefit operation and maintenance of the system. Here are
a few considerations
1. Locate the Q46F electronics where personnel can easily access the front panel control
keys. Calibration of the system requires access to these controls.
2. Locate the flowcell high enough above the floor so that servicing of the sensor is not
difficult. Sensors normally require inspection and cleaning every 3-6 months.
3. Water sample and drain lines connect to the flowcell using ¼” O.D. tubing supplied with
the unit. A ¼” MNPT to tubing adapter is supplied for connection to the customer piping.
The drain should be directed to an unpressurized drain near the flowcell. A check valve
on the outlet side of the flowcell serves as a vacuum breaker to avoid pulling a vacuum
on the flowcell.
The Q46F monitor is wall mounted using a PVC plate supplied with the unit. The bracket kit
contains 4 screws for attaching the plate to the back of the enclosure. A paper template is
supplied to ease of locating anchors in the wall.

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Figure 2 - Q46F Enclosure Dimensions
2.2 Wall Mount Bracket
A PVC mounting bracket with attachment screws is supplied with each transmitter (see Figure 3
for dimensions). The multi-purpose bracket is attached to the rear of the enclosure using the four
flat head screws. The instrument is then attached to the wall using the four outer mounting holes
in the bracket. These holes are slotted to accommodate two sizes of u-bolt that may be used to
pipe mount the unit. Slots will accommodate u-bolts designed for 1½ “or 2” pipe. The actual
center to center dimensions for the u-bolts are shown in the drawing. Note that these slots are for
u-bolts with ¼-20 threads. The 1½” pipe u-bolt (2” I.D. clearance) is available from ATI in type
304 stainless steel under part number 47-0005
Figure 3 - Wall or Pipe mount Bracket

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Figure 4 - Wall Mounting Diagram
Figure 5 - Pipe Mounting Diagram

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2.3 Panel Mount, AC Powered Monitor
Panel mounting of the Q46F monitor uses the panel mounting flange molded into the rear section
of the enclosure. Figure 6 provides dimensions for the panel cutout required for mounting.
The panel bracket kit must be ordered separately (part number 05-0094). This kit contains a
metal retainer bracket that attaches to the rear of the enclosure, 4 screws for attachment of this
bracket, and a sealing gasket to insure that the panel mounted monitor provides a water tight seal
when mounted to a panel.
The sealing gasket must first be attached to the enclosure. The gasket contains an adhesive on
one side so that it remains in place on the enclosure. Remove the protective paper from the
adhesive side of the gasket and slide the gasket over the back of the enclosure so that the
adhesive side lines up with the back of the enclosure flange. Once in place, mount the monitor in
the panel.
Figure 6 - Panel Mount Cut-Out

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2.4 Flowcell Mounting
The flowcell for the fluoride sensor is a sealed assembly with twist-lock connection. The sensor is
inserted into the top of the flowcell by aligning the retainer pins on the sensor with the slots in the
flowcell. Once inserted fully, the sensor must be rotated slightly to insure the sensor is retained if
the flowcell is pressurized.
Figure 7 - Fluoride Flowcell

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2.5 Fluoride Sensor
The fluoride sensor used in the Q46F system is a combination style electrode containing a
lanthanum fluoride sensing element and a sealed silver/silver chloride reference electrode.
Fluoride sensor are suitable for monitoring fluoride ion concentration in potable water systems
when the source water has a very stable pH and conductivity. Large changes in pH or
conductivity (ionic strength) can cause a significant shift in the calibration curve of a sensor. For
applications with widely varying sample conditions, ATI’s Auto-Chem fluoride system with sample
conditioning and automatic calibration is a good solution.
Physically, the fluoride sensor is in a molded industrial “twist-lock” housing providing for simple
insertion and removal from the sample flowcell. Dual o-rings on the body of the sensor provide a
water-tight seal and the sensor may be used at pressures up to 50 PSI.
Figure 8 - Fluoride Sensor

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Part 3 – Electrical Installation
3.1 General
The Q46F electronics contains a universal power supply operating on voltages between 90 and
265 VAC, 50/60 cycle. An optional version of this instrument operates from a DC power input
between 12 and 24 VDC. The label on the outside of the Q46F enclosure indicates the input
power required for that unit.
Important Notes:
1. Use wiring practices that conform to all national, state and local electrical
codes. For proper safety as well as stable measuring performance, it is
important that the earth ground connection be made to a solid ground point
from terminal 12 (Figure 9).
2. Do NOT run sensor cables or instrument 4-20 mA output wiring in the same
conduit that contains AC power wiring. AC power wiring should be run in a
dedicated conduit to prevent electrical noise from coupling with the
instrumentation signals.
Q46 electronic units are supplied with five ½” NPT ports, two on each side and one on the
bottom. Red plugs are provided for each port. Five cord grips are supplied separately for use
during installation. A cord grip should be installed in the bottom port for sealing the sensor cable
connection. AC power should enter through the lower right hand port as the AC terminals are
closest to this entry.
Connect HOT, NEUTRAL, and GROUND to the matching designations on terminal strip TB7.
WARNING
Disconnect line power voltage BEFORE connecting line power wires to
Terminal TB7 of the power supply. The power supply accepts only standard
three-wire single phase power. The power supply is configured for 100-240
VAC ±10% operation.. Do NOT connect voltages other than the labeled
requirement to the input.


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The analog outputs from the system are present at terminals TB1. The loop-load limitation in this
configuration is 500 Ohms maximum for each output. Also note that these two outputs are
completely isolated from each other to insure that ground loops do not result from the connection
of both outputs to the same device such as a PLC or DCS.
A ribbon cable connects the power supply assembly with the microprocessor assembly located in
the front section of the enclosure. This cable can be disconnected from the front section during
installation to facilitate wiring. The ribbon cable has a marking stripe on one edge that is used to
indicate proper orientation.
Figure 9 - Line Power Connection
The power strip, TB5, allows up to 12 AWG wire. A wire gauge of 16 AWG is recommended. DC
powered units are connected to the same terminals used for AC connections and are marked as
indicated in Figure 9 above.

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3.3 Q46F Sensor Wiring
The interconnection between the fluoride sensor and the Q46F electronics is a 4-conductor cable.
The sensor cable has a coaxial cable with the center conductor and shield separated for
connection to terminals 1 and 3. Two addition wires provide the temperature input and are
terminated at terminals 7 and 8. A jumper wire is required between terminals 4 and 8. The
sensor wire is supplied with a standard length of 10 feet (3 m.). If desired, this length can be cut
to eliminate excess cable. If you plan to cut the cable, be sure not to cut it too short as adding
additional cable by trying to splice the cable is extremely difficult and will often lead to signal
problems.
Note: If sensor is experiencing Low-Slope or Low-Output conditions, due to poor Earth
Ground Connections, move the Shield connection from P/S board to alternate
location on lid, where indicated with an “S”.
Figure 10 - Sensor and Control Connection

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3.4 Relay Wiring
Three SPDT relays are provided on the power supply board. None of the relay contacts are
powered. The user must supply the proper power to the contacts. For applications that require
the same switched operating voltage as the Q46 (115 or 230 V), power may be jumpered from
the power input terminals at TB7. Relay wiring is connected at TB4,TB5, and TB6 as shown
below. Note that the relay contact markings are shown in the NORMAL mode. Programming a
relay for “Failsafe” operation reverses the NO and NC positions in this diagram (Figure 12).
Figure 11 - Relay Contacts
3.5 Low Power Relay Connection
TB2, is used to connect to the low power 3-relay card). The Q46 provides three low power relays
that can be used for switching low current DC loads. These relays are not isolated. Contact ATI
if you have any questions about using these relays.
Figure 12 - Low Power Relay Connections

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Part 4 – Configuration
4.1 User Interface
The user interface for the Q46 Series instrument consists of a custom display and a membrane
keypad. All functions are accessed from this user interface (no internal jumpers, pots, etc.).
Figure 13 - User Interface
MENU ICONS
UNITS
12-CHARACTER
SECONDARY
DISPLAY
MEMBRANE
KEYPAD
MENU
ESC ENTER
A
B
DIAG
FAIL
HOLD
CAL
CONF
MENU ICONS
UNITS
12-CHARACTER
SECONDARY
DISPLAY
MEMBRANE
KEYPAD
ENTER KEY
LEFT ARROW
KEY
4-DIGIT
MAIN DISPLAY
MENU/ESCAPE
KEY
UPARROW
KEY
SIGN
RELAY/LO-BAT
INDICATOR
4-KEY USER
INTERFACE
RELAY
INDICATOR

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4.11 Keys
All user configurations occur through the use of four membrane keys. These keys are used as
follows:
MENU/ESC To scroll through the menu section headers or to escape from anywhere
in software. The escape sequence allows the user to back out of any
changes in a logical manner. Using the escape key aborts all changes to
the current screen and backs the user out one level in the software tree.
The manual will refer to this key as either MENU or ESC, depending
upon its particular function. In the battery-powered version of the Q46,
this is also the ON button.
UP (arrow) To scroll through individual list or display items and to change number
values.
LEFT (arrow) To move the cursor from right to left during changes to a number value.
ENTER To select a menu section or list item for change and to store any change.
4.12 Display
The large custom display provides clear information for general measurement use and user
configuration. There are three main areas of the display: the main parameter display, the
secondary message line, and the icon area.
Main Parameter During normal operation, the main parameter display indicates the
present process input with sign and units. This main display may be
configured to display any of the main measurements that the system
provides. During configuration, this area displays other useful set-up
information to the user.
Lower Line During normal operation, the lower line of the display indicates user-
selected secondary measurements that the system is making. This also
includes calibration data from the last calibration sequence and the
transmitter model number and software version. During configuration,
the lower line displays menu items and set-up prompts to the user.
Finally, the lower line will display error messages when necessary. For a
description of all display messages, refer to Section 9.4.
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Icon Area The icon area contains display icons that assist the user in set-up and
indicate important states of system functions. The CAL, CONFIG, and
DIAG icons are used to tell the user what branch of the software tree the
user is in while scrolling through the menu items. This improves
software map navigation dramatically. Upon entry into a menu, the title
is displayed (such as CAL), and then the title disappears to make way for
the actual menu item. However, the icon stays on.
HOLD The HOLD icon indicates that the current output of the transmitter has
been put into output hold. In this case, the output is locked to the last
input value measured when the HOLD function was entered. HOLD
values are retained even if the unit power is cycled.
FAIL The FAIL icon indicates that the system diagnostic function has detected
a problem that requires immediate attention. This icon is automatically
cleared once the problem has been resolved.
Relay Area A/B The relay area contains two icons that indicate the state of the system
relays (if the relay card is installed). Relay C is normally configured for
FAIL indication, so it is only displayed on the lower MEASURE display
line.
4.2 Software
The software of the Q46F is organized in an easy to follow menu-based system. All user settings
are organized under five menu sections: Measure, Calibration [CAL], Configuration [CONFIG],
Control [CONTROL] and Diagnostics [DIAG].
Note: The default Measure Menu is display-only and has no menu icon.
A
B