ATI Technologies Q45D User manual

O & M Manual
Model Q45D/50
Portable Dissolved Oxygen
Measurement System
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] Email: [email protected]
Web: www.Analyticaltechnology.com

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Table of Contents
PART 1 - INTRODUCTION..................................4
1.1 GENERAL.................................................4
1.2 FEATURES................................................4
1.3 Q45D/60 PORTABLE SYSTEM SPECS ............5
1.4 Q45D PERFORMANCE SPECIFICATIONS .........6
PART 2 –INSTRUMENT HANDLE/MOUNTING ..7
2.1 GENERAL.................................................7
2.2 PORTABLE HANDLE....................................7
PART 3 –ELECTRICAL CONNECTION ..................8
3.1 GENERAL.................................................8
3.2 DIRECT SENSOR CONNECTION......................8
PART 4 –SENSOR ASSEMBLY..........................11
4.1 OXYGEN SENSOR PREPARATION .................11
4.2 FLOW TYPE D.O. SENSOR.........................13
PART 5 –OPERATION.....................................14
5.1 GENERAL...............................................14
4.2 BATTERY /POWER CIRCUIT BOARD ............14
4.3 BATTERY POWER CIRCUIT BOARD...............16
4.4 VOLTAGE OUTPUTS .................................16
4.5 SOFTWARE INTERFACE..............................17
4.6 KEYS.....................................................18
4.7 DISPLAY ................................................18
4.8 SOFTWARE.............................................19
4.9 SOFTWARE NAVIGATION.......................... 20
5.0 MEASURE MENU [MEASURE] ................ 22
5.1 CALIBRATION MENU [CAL]...................... 22
5.2 CONFIGURATION MENU [CONFIG]........... 23
5.3 CONTROL MENU [CONTROL] ................. 24
5.4 DIAGNOSTICS MENU [DIAG]................... 25
PART 6 –CALIBRATION.................................. 27
6.1 DISSOLVED OXYGEN CALIBRATION.............. 27
6.2 DISSOLVED OXYGEN SPAN CAL (1-SPL) ....... 27
6.3 DISSOLVED OXYGEN SPAN CAL (SAT).......... 28
6.4 DISSOLVED OXYGEN ZERO CAL .................. 29
6.5 TEMPERATURE CALIBRATION .................... 30
PART 7 –SYSTEM MAINTENANCE.................. 31
7.1 GENERAL .............................................. 31
7.2 ANALYZER MAINTENANCE........................ 31
7.3 SENSOR MAINTENANCE........................... 31
7.4 LEAD ANODE REPLACEMENT..................... 32
PART 8 –SERVICE .......................................... 33
8.1 GENERAL .............................................. 33
8.2 EXTERNAL SOURCES OF PROBLEMS ............ 33
8.3 ANALYZER TESTS .................................... 33
8.4 DISPLAY MESSAGES ................................ 33
8.5 SENSOR TESTS ....................................... 35
SPARE PARTS LIST.......................................... 38

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Table of Figures
Figure 1 - Portable Handle - Views (ATI-0688)............................................................................... 7
Figure 2 - Sensor Cable Preparation............................................................................................... 8
Figure 3 - Flow Type Connections (ATI-0658)................................................................................ 9
Figure 4 - Submersible Sensor Connection (ATI-0671)................................................................ 10
Figure 5 - Submersible Sensor Assembly..................................................................................... 11
Figure 6 - Submersible Sensing Module Assy .............................................................................. 12
Figure 7 - Flow Type Sensor Assy (ATI-0860).............................................................................. 13
Figure 5 - Battery Board Connections........................................................................................... 15
Figure 9 - User Interface (ATI-0654) ............................................................................................. 17
Figure 10 - Software Map.............................................................................................................. 21
Figure 11 - Q45D Display Messages............................................................................................. 34
Figure 12 - Pt100 RTD Table ........................................................................................................ 35
Figure 13 - Reference - Barometric Pressure Conv...................................................................... 36
Figure 14 - Reference - Water Sat Conc. Of O2 ........................................................................... 37

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Part 1 - Introduction
1.1 General
The Model Q45D/60 is a highly versatile portable monitoring/recording system designed
for the measurement of dissolved oxygen in solution. The full scale operating range of
the system is 0-40.0 ppm and the sensing system will operate on water streams with
temperatures from 0 to 50

C.
The system operates on two AA batteries, and will run continuously for approximately
240 hours.
Warning: If unit is to be stored for more that 6 months REMOVE the
batteries from the holder to avoid potential damage from battery
leakage
The basic sensing element used in the dissolved oxygen monitor is a galvanic membrane
sensor which measures dissolved oxygen directly.
1.2 Features
Standard Q45P electronic transmitters are designed to be a fully isolated, battery
powered instrument. The monitor can be quickly converted to either a loop power
transmitter or line powered analyzer.
Two 10-bit, isolated, 0-2.5 VDC analog outputs may be configured to track pH and
temperature, or pH and pH. Both analog outputs can be individually programmed to
specific ranges.
Large, high contrast, custom Super-Twist display provides excellent readability The
secondary line of display utilizes 5x7 dot matrix characters for clear message display.
Two of four measured parameters may be on the display simultaneously. An LED back
light can be turned on if necessary for use in very low light conditions.
Sensor diagnostics monitor glass breakage, sensor leaks, and RTD condition.
Diagnostic messages provide a clear description of any problem with no confusing error
codes to look up. Messages are also included for diagnosing calibration problems.
Quick and easy two-point and sample calibration methods include auto-buffer recognition
from 3 built-in buffer tables. To provide high accuracy, all calibration methods include
stability monitors that check temperature and main parameter stability before accepting
data.
Selectable Pt1000 or Pt100 temperature inputs. Systems can also be hard-configured for
three-wire elements. Temperature element can be user calibrated.
Security lock feature to prevent unauthorized tampering with transmitter settings. All
settings can be viewed while locked, but they cannot be changed.

ATIQ45D Portable Dissolved Oxygen Part 1 - Introduction
1.3 Q45D/60 Portable System Specs
Displayed Parameters Main input, 0.00 to 19.99 ppm, 20.0 to 40.0
ppm%Saturation, 0 to 200%
Sensor temperature, 0 to 50.0 °C (32 to122 ºF)
Sensor Signal -40 to +2000 mVDC
Output Values, 0 to 2.5 VDC, Vout #1/#2
Sensor slope/offset
Model number and software version
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.
Keypad 4-key membrane type with tactile feedback,
polycarbonate with UV coating.
Enclosure NEMA 4X, polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,HWD: 4.4" (112
mm) x 4.4" (112 mm) x 3.5" (89 mm)
Mounting Options Handheld w/Nylon Carrying strap
Weight 1 lb. (0.45 kg)
Ambient Temperature Instrument Service, -20 to 60 °C (-4 to 140 ºF)
Sensor Service, -5 to 55°C (23 to 131 °F)
Storage, -30 to 70 °C (-22 to 158 ºF)
Ambient Humidity 0 to 95%, indoor/outdoor use, non-condensing to rated
ambient temperature range
Altitude Up to 2000 m (6562 ft)
Electrical Certification Ordinary Location, cCSAus (CSA and UL standards -
both approved by CSA), pollution degree 2, installation
category 2
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
Temperature Input Pt1000 RTD with automatic compensation
Sensor 2-electrode galvanic membrane sensor for
direct measurement of dissolved oxygen,
Sensor Materials Noryl and stainless steel
Sensor Cable 25 ft. (7.5 meter) cable with 6-pin plug.

ATIQ45D Portable Dissolved Oxygen Part 1 - Introduction
Max. Sensor-to-Analyzer 100 feet (30.5 meters), with junction box
Distance
Instrument Power Two generic AA batteries, low battery indication at 1.60V
DC.
Outputs Two 0-2.5 VDC isolated outputs are provided
on for connection to data recorders, etc.
Battery Life Approximately 240 hours of operational use on a set of
batteries (without backlight).
1.4 Q45D Performance Specifications
Accuracy 0.2% of span or better
Repeatability 0.05% of span or better
Sensitivity 0.05% of span
Non-linearity 0.1% of span
Stability 0.05% of span per 24 hours, non-cumulative
Temperature Drift Span or zero, 0.01% of span/ºC
Warm-up Time 3 seconds to rated performance
Instrument Response 6 seconds to 90% of step input, in a given
Time range, at lowest setting

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Part 2 – Instrument Handle/Mounting
2.1 General
The Q45D/60 Portable Dissolved Oxygen System comes complete with a specially
designed handle that allows thesystem to be comfortably carried, or quicklystrapped to
arailing. Although the system is designedto be a portable system, it can be permanently
mounted for longer term fielduse. This is possible due to the very long battery lifespans
that can be achieved with the system.
2.2 PortableHandle
A removable handle is included with each unit that provides not only comfortable
transportation of the system, but the integral locking strap allows the system to be quickly
mounted to pipes or rails for longer term use in one area.
Figure 1 - Portable Handle - Views (ATI-0688)

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Part 3 –Electrical Connection
3.1 General
The sensor cable can be quickly connected to the Q45terminal strip by matching the wire
colors on the cableconductors. A junction box is also available to provide a quick-
disconnect point for the sensor, or a break point for very long sensor cable runs. Route
signal cable away from AC power lines, adjustable frequency drives, motors, or other
noisy electrical signal lines. Do not run sensor or signal cables in conduit that contains
AC power lines or motor leads.
3.2 DirectSensorConnection
The sensor cable should be routed into the enclosure through the right hand cord grip on
the bottom of the enclosure. Make sure the cord-grips are snugly tightened after
electrical connections have been made to prevent moisture incursion. When stripping
cables, leave adequate length for connections in the transmitter enclosure, as shown
below.
Figure 2 - Sensor Cable Preparation

ATIQ45D Portable Dissolved Oxygen Part 3 –Electrical Connection
Figure 3 - Flow Type Connections (ATI-0658)

ATIQ45D Portable Dissolved Oxygen Part 3 –Electrical Connection
Figure 4 - Submersible Sensor Connection (ATI-0671)

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Part 4 – Sensor Assembly
4.1 Oxygen Sensor Preparation
The oxygen sensor supplied with the Q45D is shipped dry. It will not operate until it is
prepared by adding electrolyte and a membrane. Preparation of the sensor for operation
must be done carefully. The procedure should be done by a qualified technician, and it
should only be done when the system is ready for operation. Until then, it is best to leave
the sensor in the condition in which it is received.
Submersible oxygen sensors are made up of two separate parts, a submersion holder
that also contains the temperature compensating element and a sensing module. The
sensing module screws into the holder, with an o-ring providing a water tight connection.
Figure 5 below shows the assembly.
Figure 5 - Submersible Sensor Assembly
Sensing modules contain the main measuring components, and are the main component
requiring service. Figure 5 below shows an exploded view of the D.O. sensing module.

ATIQ45D Portable Dissolved Oxygen Part 4 –Sensor Assembly
Figure 6 - Submersible Sensing Module Assy
Follow the procedure below to prepare the D.O. sensor module for operation:
1. Unscrew the electrolyte chamber from the assembled sensor and also remove the
vent screw from the side of the sensor body.
2. Remove the front nut from the bottom of the chamber and discard the protective
membrane. O-rings are contained in grooves on both the bottom and top of the
chamber. Be sure that these o-rings remain in place.
3. From the package of membranes (either 2-mil or 5 mil) supplied with the sensor,
place a new membrane into the front nut, holding the membrane by its edge to avoid
fingerprint oil from contaminating the membrane. The membrane is clear and is
separated from other membranes by a light blue paper spacer.
4. Screw the front nut on to the chamber until you feel the o-ring compress. Hand tight
compression is all that is needed. Do not use tools to tighten. The membrane should
be flat across the bottom of the chamber without wrinkles.
5. Fill the chamber with electrolyte until the level reaches the bottom of the internal
threads.
6. Slowly screw the chamber onto the sensor body. A small amount of electrolyte will
run out of the hole from which the vent screw was removed. Place a paper towel
around the sensor to absorb the electrolyte overflow. The electrolyte is harmless and
will not irritate skin. Tighten the chamber until the o-ring at the top of the chamber is
compressed. Once again, do not use tools to tighten.
7. Shake excess electrolyte from the vent hole on the side of the sensor and replace the
vent screw.

ATIQ45D Portable Dissolved Oxygen Part 4 –Sensor Assembly
The sensor is now ready for operation. The membrane should be stretched tightly
across the tip of the sensor.
CAUTION: When handling the assembled sensor, do not set the
sensor on its tip or damage to the membrane will result.
Severe impacts on the tip of the sensor from dropping
or other misuse may cause permanent damage to the
sensor.
4.2 Flow Type D.O. Sensor
The D.O. sensor designed for use in flow applications is similar in construction to the
sensing module described above. The method for sensor preparation is basically the
same as described in section 4.1.
Figure 7 - Flow Type Sensor Assy (ATI-0860)

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Part 5 – Operation
5.1 General
To turn the system ON, simply press and hold the MENU key for approximately 5 seconds and
the display will come on. To turn the unit off, press and hold the ENTER key until the
display shuts off (about 3 seconds). Note that the unit must be in the MEASURE menu in
order for the 3-second key press to operate.The instrument will turn off automatically after 30
minutes if no keys are pressed –optimizing battery life. This mode of operation is ideal for
portable operation where intermediate readings are being taken. Assuming the instrument is used
perhaps an hour per day, this would result in a battery lifespan of about 240 hours. For
continuous operation with no automatic shut-off, turn the Auto-OFF feature to OFF in the DIAG
menu. This mode is intended for use when the instrument outputs are used for transmitting data.
In this mode, the instrument will run continuously until the battery reaches the shut-down level
(1.6V). It should be noted that rechargeable AA batteries reduce operational times dramatically,
as they typically contain much less energy than standard batteries.
The PWR switch disconnects the AA batteries and is only used to disconnect the battery if the
system is not to be used for a long period of time (> 3 months of storage). Otherwise, leave this
switch in the ON position. The red dip switch is only for factory use.
The "B" will flash on the display next to the main measurement indication when the instrument
requires battery replacement. If the battery is not replaced, eventually the unit may not turn on in
the normal operating mode. Once the low battery condition is indicated, the instrument will only
stay powered for 10 minutes.
4.2 Battery / Power Circuit Board
Q45C2 monitors are powered by internal AA alkaline batteries Figure 5 shows this board
assembly with batteries installed.
The battery circuit board contains 3 switch assemblies as shown in the drawings.
.

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
(REAR OF ENCLOSURE)
DC BATTERY BOARD
POWER CABLE
Figure 8 - Battery Board Connections
The first (S1) is an On/Off slide switch. This switch must be in the ON position for operation.
Turn it to OFF if you do not intend to operate the monitor in the next week or two.
The second switch assembly (S2) contains two switches, the one on the left marked LOCK and
the one on the right marked MODE. The function of these two slide switches are as follow:
LOCK This switch is used to define how the monitor will turn on and off. This switch is
normally in the OFF position. With the lock switch off, the monitor will be turned
on manually using the MENU key on the front of the monitor. With the lock
switch in the ON position, the monitor will always be on when there is enough
power to run the monitor. The ON position is normally used when operating from
an external power supply intended for continuous operation.
MODE This switch is used to set the voltage at which monitor will shut off when powered
by internal batteries. Alkaline batteries can normally be run down to about 0.8
volts. When using alkaline batteries, the mode switch is in the OFF position
(factory default). If rechargeable NiMH batteries are substituted, place the
MODE switch in the ON position. Note that rechargeable NiMH batteries have
only about 35% of the capacity of an alkalines. However, NiMH batteries can be
recharged hundreds of times.
The third switch assembly is a single slide switch (S3) which defines whether the
0-2.5 VDC signals from the monitor are isolated or non-isolated. Output isolation
is not required when outputs are connected to the internal data logger. However,
if the outputs are connected to external devices through the external connection
cable, putting this switch in the ISO position will protect against possible ground
loops. The isolation circuit will slightly increase the power requirement for the
monitor, resulting in a bit less battery life.

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
4.3 Battery Power Circuit Board
The Q45 portable instrument is primarily operated by software settings. However, there are also
a few hardware details on the battery circuit board to note.
The battery board is a circuit board that sits in the rear of the Q45 enclosure, and connects to the
Q45 AUX port through a ribbon cable. The battery board contains the battery clip for the two AA
batteries and the output terminal strip for the two 0-2.5 VDC outputs. Along the left side below
the ribbon cable is an ON/OFF slide switch. This switch can be used to turn the instrument
completely OFF when not intending to use the unit for an extended period.
4.4 Voltage Outputs
There are two sets of analog voltage outputs on the battery board that may be used to send
isolated data back to remotely located recorders, PLC’s, etc. Output #1 is used only for dissolved
oxygen information, and Output #2 can be used for an additional dissolved oxygen output
channel, or it can be selected to output temperature information.

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
4.5 Software Interface
The software user interface for the Q45 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 9 - User Interface (ATI-0654)
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

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
4.6 Keys
All user configurationsoccur 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 changesin 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 Q45, 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.
4.7 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 9.31.

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
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,
CONTROL, 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.
Icon B The left screen area contains one ‘B’ icon that indicates the battery
power is low.
4.8 Software
The software of the Q45D 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.

ATI Q45D Portable Dissolved Oxygen Part 5 –Operation
4.9 SoftwareNavigation
Within the CAL, CONFIG, CONTROL, and DIAG menu sections are a list of selectable items.
Once a menu section (such as CONFIG) has been selected with the MENU key, the user can
access the item list in this section by pressing either the ENTER key or the UP arrow key. The
list items can then be scrolled through using the UP arrow key. Once the last item is reached, the
list wraps around and the first list item is shown again. The items in the menu sections are
organized such that more frequently used functions are first, while more permanent function
settings are later in the list. See Figure 10 for a visual map of the software.
Each list item allows a change to a stored system variable. List items are designed in one of two
forms: simple single variable, or multiple variable sequences. In the single variable format, the
user can quickly modify one parameter - for example, changing temperature display units from °F
to °C. In the multiple variable sequence, variables are changed as the result of some process.
For example, the calibration of dissolved oxygen generally requires more than one piece of
information to be entered. The majority of the menu items in the software consist of the single
variable format type.
Any data that may be changed will be flashing. This flashing indicates user entry mode and is
initiated by pressing the ENTER key. The UP arrow key will increase a flashing digit from 0 to 9.
The LEFT arrow key moves the flashing digit from right to left. Once the change has been
completed, pressing ENTER again stores the variable and stops the flashing. Pressing ESC
aborts the change and also exits user entry mode.
The starting (default) screen is always the Measure Menu. The UP arrow key is used to select
the desired display. From anywhere in this section the user can press the MENU key to select
one of the four Menu Sections.
The UP arrow icon next to all list items on the display is a reminder to scroll through the list using
the UP arrow key.