ATI Technologies Q45S/87 User manual

O & M Manual
Model Q45S/87
Portable Wet Hydrogen Sulfide
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]

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Table of Contents
PART 1 - INTRODUCTION .............................................4
1.1 GENERAL............................................................4
1.2 FEATURES...........................................................5
1.4 Q45S/87 SYSTEM SPECIFICATIONS .........................6
1.5 Q45S/87 PERFORMANCE SPECIFICATIONS ...............7
PART 2 –ANALYZER CONFIGURATION .........................8
2.1 GENERAL............................................................8
PART 3 –SENSOR INSTALLATION .................................9
3.1 GENERAL............................................................9
3.2 SENSOR DUCT ASSEMBLY ......................................9
3.3 SENSOR PREFILTER MEMBRANE ............................11
PART 4 –ELECTRICAL INSTALLATION..........................12
4.1 GENERAL..........................................................12
4.2 CABLE CONNECTION ...........................................12
PART 5 –OPERATION.................................................14
5.1 USER INTERFACE................................................14
5.2 BATTERY /POWER CIRCUIT BOARD .......................14
5.3 BATTERY POWER CIRCUIT BOARD..........................16
5.4 VOLTAGE OUTPUTS ............................................16
5.5 USER INTERFACE................................................16
5.6 KEYS................................................................18
5.7 DISPLAY ...........................................................18
5.8 SOFTWARE........................................................20
5.9 SOFTWARE NAVIGATION.....................................20
5.10 MEASURE MENU [MEASURE]............................23
5.11 CALIBRATION MENU [CAL].....................................23
5.12 CONFIGURATION MENU [CONFIG]......................25
5.13 CONTROL MENU [CONTROL] ............................27
5.14 DIAGNOSTICS MENU [DIAG]..................................28
PART 6 –CALIBRATION ..............................................31
6.1 CALIBRATION.....................................................31
6.2 ZERO CAL .........................................................31
6.3 SPAN CAL .........................................................32
6.4 TEMPERATURE CALIBRATION ................................33
PART 7 –SYSTEM MAINTENANCE ..............................35
7.1 GENERAL..........................................................35
7.2 ANALYZER MAINTENANCE....................................35
7.3 SENSOR MAINTENANCE.......................................35
PART 8 –TROUBLESHOOTING ....................................36
8.1 GENERAL ..........................................................36
8.2 EXTERNAL SOURCES OF PROBLEMS ........................36
8.3 ANALYZER TESTS ................................................36
8.4 DISPLAY MESSAGES ............................................37
SPARE PARTS .............................................................38

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Table of Figures
FIGURE 1-PORTABLE TYPICAL CONFIGURATION........................................................................... 8
FIGURE 2-DUCT INSERTION SENSOR HOLDER DIMENSIONS .......................................................... 9
FIGURE 3-DUCT SENSOR HOLDER EXPLODED VIEW....................................................................10
FIGURE 4-SENSOR CABLE PREPARATION ...................................................................................12
FIGURE 5-SENSOR CALIBRATION DIAGRAM.................................................................................13
FIGURE 6-BATTERY BOARD CONNECTIONS.................................................................................15
FIGURE 7-USER INTERFACE.......................................................................................................17
FIGURE 8-SOFTWARE MAP ........................................................................................................22
FIGURE 9-Q45H DISPLAY MESSAGES ........................................................................................37

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Part 1 - Introduction
1.1 General
The Q45S/87 Wet H2S Transmitteris a versatile portable monitoring/recoding instrument
for hydrogen sulfide gas in wet scrubber outlet vents or scrubber inlet ducts saturated
with water vapor.
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.
1.2 Standard System
The system consists of two parts, a Portable Monitor assembly and a special H2S
sensor with duct insertion holder designed for operation in condensing gas streams.
For connection of the sensor to the electronics, a 25’ cable is supplied. All required
spare parts are also provided with the basic system, including spare membranes,
electrolyte, o-rings, and any special hardware.

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1.2 Features
•Standard Q45S/87 are designed to be fully isolated, battery powered instruments
for monitoring/recording applications. Can be Quickly converted to either a loop
power transmitter or line powered analyzer (optional board required for analyzer)
•High sensitivity system measures from 0.1 ppm to 200.0 ppm with 3 display
ranges. User ranges of 2.000 ppm, 20.00 ppm, or 200.0 ppm may be selected,
or the monitor may operate in Auto-Ranging mode, switching display sensitivity
up and down depending on the measured value.
•Two 10-bit isolated, 0-2.5 VDC outputs may be configured to track Hydrogen
Sulfide and temperature, or Hydrogen Sulfide or Hydrogen Sulfide. Both outputs
can be programmed individually to specific ranges.
•Large, high contrast, custom LCD display with LED back light 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 backlight can be turned on if necessary for use in very
low light conditions.
•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 one-point calibration method and sensor zero-cal. To provide
high accuracy, all calibration methods include stability monitors that check main
parameter stability before accepting data.
•Security lock feature to prevent unauthorized tampering with transmitter settings.
All settings can be viewed while locked, but they cannot be changed.

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1.4 Q45S/87 System Specifications
Displayed Parameters Main input, 0.1 ppm to 200.0 ppm
Sensor Current, 0.0 to 999.9 nA, 0.000 to 99.99 uA
Sensor Temperature
0-2.5V Outputs
Sensor slope/offset
Model number and software version
Main Parameter Ranges Manual selection of one of the following ranges,
0.0 to 2.000 ppm
0.00 to 20.00 ppm
0.00 to 200.0 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.
Keypad 4-key membrane type with tactile feedback, polycarbonate
with UV coating
Weight 0.8 lbs. (0.36 Kg.)
Ambient Temperature Analyzer Service, -20 to 60 °C (-4 to 140 ºF)
Sensor Service, -5 to 55°C (23 to 131°F)
Storage, -5 to 70 °C (-22 to 158 ºF)
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 Electrochemical type for measurement of hydrogen sulfide
gas
Sensor Materials Noryl and PVC
Sensor Cable 25 ft. (7.5 meter) cable

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Sensor Holder PVC duct insertion assembly with air-purge nozzle.
Power: Two generic AA batteries, low battery indication at 1.60V
DC.
Enclosure: NEMA 4X, IP66, 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 Supplied with carrying handle and cable glands installed.
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).
1.5 Q45S/87 Performance Specifications
(Common to all variations)
Accuracy 1% of selected range or 0.2 PPM
Repeatability 0.5% of selected range or 0.1 PPM
Sensitivity 0.05% of selected range
Non-linearity 0.1% of selected range
Warm-up Time 3 seconds to rated performance (electronics only)
Supply Voltage Effects ± 0.05% span
Instrument Response Time 60 seconds to 90% of step input at lowest damping

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Part 2 – Analyzer Configuration
2.1 General
The Q45S/87 Portable Wet Hydrogen Sulfide System comes complete with a
specially designed handle that allows the system to be comfortably carried, or
quickly strapped to a railing. Although the system is designed to be a portable
system, it can be permanently mounted for longer term field use. This is possible
due to the very long battery life spans that can be achieved with the system.
2.2 Portable Handle
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 Typical Configuration

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Part 3 – Sensor Installation
3.1 General
Select a location for the sensor on the side of the scrubber inlet or outlet duct.
Do not mount the sensor on the bottom of a horizontal duct section. If the duct is
horizontal, mount the sensor at about 45-60 degrees off of vertical. The
preferred location for mounting the sensor is on a VERTICAL section of
duct. Always select a location that allows for easy access to the sensor for
maintenance purposes. Placing the sensor in an inacessible location generally
leads to a lack of maintenance and ultimate failure of the system.
3.2 Sensor Duct Assembly
Figure 2shows the dimensions of the duct mount assembly used to insert the wet
hydrogen sulfide sensor into a scrubber duct. This assembly is designed to be
screwed into a 1½” NPT female adapter on the duct. The female adapter
attached to the duct must be supplied by the user.
Figure 2 - Duct Insertion Sensor Holder Dimensions

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Figure 3 shows an exploded view of the duct insertion assembly with the
hydrogen sulfide sensor and cable assembly.
To facilitate installation, disassemble the sensor system so that the front half of
the holder can be screwed into the duct separately.
The front section of the sensor holder assembly is screwed to the duct, and it will
need to be removed periodically to replace the prefilter membrane. Apply teflon
tape to the threads prior to installation and screw this part in “hand tight” to allow
for easy removal.
When taking the sensor assembly apart, first loosen the cable gland at the back
of the adapter so that cable can slide freely. Then unscrew the adapter from the
front holder. The sensor can be pulled out from the holder using the cable.
When inserting the sensor, connect the sensor cable first and use the connector
to press the sensor firmly into place. An o-ring at the front of the holder seals the
compartment. A small amount of o-ring lubricant on the side of the front section
of the sensor will make insertion and removal much easier. Screw the adapter
back in and then tighten the cable gland to seal the cable against water intrusion.
Figure 3 - Duct Sensor Holder Exploded View

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3.3 Sensor Prefilter Membrane
On the front of the sensor holder is a membrane that serves as a sample prefilter
to protect the sensor from deposits that could cause premature sensor failure.
This membrane is held in place with a screw-on cap, and the membrane should
be changed every 2 or 3 months to insure proper operation of the system. A
package of 10 prefilter membranes are supplied with the unit.
The membrane material used as a prefilter IS NOT the same on both sides.
Look carefully at one of the membrane disks and you will see a mesh pattern on
one side. You can also feel the difference between the two sides. The mesh
side is fairly smooth while the opposite side is slightly sticky, feeling a little like a
latex glove. When installing the prefilter on the sensor holder, the mesh
side of the membrane must face out toward the measured air stream.
Prefilters are available in packages of 10. The part number is listed on the spare
parts page of this manual.

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Part 4 – Electrical Installation
4.1 General
The sensor cable can be quickly connected to the Q45 terminal strip by matching
the wire colors on the cable conductors.
4.2 Cable Connection
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 4 - Sensor Cable Preparation

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Figure 5 - Sensor Calibration Diagram

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Part 5 – Operation
5.1 User Interface
Note: Upon receipt of analyzer for the first time, you will need to open up the
transmitter and the PWR (S1) switch needs to be flipped from OFF to ON. Unit
shipped in the OFF position to avoid possible battery drainage due to accidental
Starting of analyzer.
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.
5.2 Battery / Power Circuit Board
Q45S 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.
.

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(REAR OF ENCLOSURE)
DC BATTERY BOARD
POWER CABLE
Figure 6 - 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

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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.
5.3 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.
5.4 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 hydrogen sulfide information, and Output #2 can be used for
an additional hydrogen sulfide output channel, or it can be selected to output
temperature information.
5.5 User Interface

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The 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 7 - 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
UP ARROW
KEY
SIGN
RELAY/LO-BAT
INDICATOR
4-KEY USER
INTERFACE
RELAY
INDICATOR

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5.6 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 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.
5.7 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.

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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 Display Messages under the Troubleshooting section
of this manual.
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.
32.0 nA

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ICON B The left screen area contains one “B” icon that indicates that
the battery voltage is at a low level.
5.8 Software
The software of the Q45H 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.
5.9 Software Navigation
Within the CAL, CONFIG, CONTROL, and DIAG menu sections is 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 8 - Software Map
for a visual description 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 the display range from 2.000 to 20.00. In the
multiple variable sequence, variables are changed as the result of some process.
For example, the calibration of hydrogen sulfide 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.