ATI Technologies Q45P User manual

O & M Manual
Model Q45P
Portable pH
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
1.3 Q45P System Specifications......................6
1.4 Q45P Performance Specifications .............7
PART 2 –INSTRUMENT
HANDLE/MOUNTING..........................................8
2.1 General.......................................................8
2.2 Portable Handle .........................................8
PART 3 –SENSOR ELECTRICAL
INSTALLATION.....................................................9
3.1 General.......................................................9
3.2 Direct Sensor Connection..........................9
3.3 Combination Electrode Connection.........11
3.4 External Temperature Compensation ......12
PART 4 –CONFIGURATION.............................13
4.1 General.....................................................13
4.2 Battery / Power Circuit Board .................13
4.3 Battery Power Circuit Board....................15
4.4 Voltage Outputs.......................................15
4.5 User Interface...........................................16
4.51 Keys.....................................................17
4.52 Display.................................................17
4.6 Software...................................................19
4.7 Software Navigation...........................19
4.8 Measure Menu [MEASURE]...............22
4.9 Calibration Menu [CAL] ..........................23
4.10 Configuration Menu [CONFIG] .........24
4.11 Control Menu [CONTROL] ...............27
4.12 Diagnostics Menu [DIAG].........................28
PART 5 –CALIBRATION...................................31
5.1 Overview and Methods............................31
5.11 Sensor Slope ........................................31
5.12 Sensor Offset .......................................32
5.13 2-Point Calibration Explained .............32
5.14 1-Point Calibration Explained .............32
5.2 Performing a 2-Point Calibration.............32
5.3Performing a 1-Point Calibration.............34
5.4 Temperature Calibration..........................36
PART 6 –SYSTEM MAINTENANCE ...............37
6.1 System Checks.........................................37
6.2 Instrument Checks ...................................37
6.3 Display Messages ....................................38
PART 7 –MAINTENANCE AND
TROUBLESHOOTING........................................41
7.1 Cleaning the Sensor.................................41
7.2 Replacing the Saltbridge and Reference
Buffer Solution ....................................................42
7.3 Troubleshooting.......................................43
SPARE PARTS......................................................45

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Table of Figures
FIGURE 1-PORTABLE HANDLE -VIEWS ........................................................................................ 8
FIGURE 2-BULKHEAD CONNECTION............................................................................................. 9
FIGURE 3-SENSOR CONNECTION ...............................................................................................10
FIGURE 4-SENSOR CONNECTIONS,COMBINATION ELECTRODES..................................................11
FIGURE 5-EXTERNAL TEMPERATURE COMPENSATION .................................................................12
FIGURE 6-BATTERY BOARD CONNECTIONS.................................................................................14
FIGURE 7-USER INTERFACE.......................................................................................................16
FIGURE 8-SOFTWARE MAP ........................................................................................................21
FIGURE 9-AUTOMATIC PHBUFFER TABLES.................................................................................27
FIGURE 10 -REPLACING THE SALTBRIDGE AND REFERENCE BUFFER.............................................42

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Part 1 - Introduction
1.1 General
The Model Q45P pH monitor provides an extremely versatile measurement
system for monitoring/recording of pH over the range of 0.00 to 14.00 pH.
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 Q45P displays pH, sensor temperature, sensor output millivolts, and output
mV signals on the secondary line of the custom display. The instrument may be
used with either the high performance Q25 series sensors or with combination-
style electrodes.

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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.

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1.3 Q45P System Specifications
Enclosure NEMA 4X, polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,
HWD: 4.4" (112 mm) × 4.4" (112 mm) × 3.5" (89 mm)
Mounting Options Handheld w/ Nylon Carrying Strap
Weight 1 lb. (0.45 kg)
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.
Ambient Temperature Service, -20 to 60 °C (-4 to 140 ºF)
Storage, -30 to 70 °C (-22 to 158 ºF)
Ambient Humidity 0 to 95%, indoor/outdoor use, non-condensing to rated
ambient temperature range
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 Selectable Pt1000 or Pt100 RTD with automatic
compensation
Displayed Parameters Main input, 0.00 to 14.00 pH
Sensor temperature, -10.0 to 110.0 °C (14 to 230ºF)
Output Values, 0 to 2.5 VDC, Vout #1/#2
Sensor slope/offset
Model number and software version
Main Parameter Ranges 0.00 to 14.00 pH
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.

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Battery Life: Approximately 240 hours of operational use on a set of
batteries (without backlight).
1.4 Q45P Performance Specifications
(Common to all variations)
Accuracy 0.1% of span or better (± 0.01 pH)
Repeatability 0.1% of span or better (± 0.01 pH)
Sensitivity 0.05% of span (± 0.01 pH)
Stability 0.05% of span per 24 hours, non-cumulative
(± 0.007 pH)
Warm-up Time 7 seconds to rated performance
Instrument Response Time 6 seconds to 90% of step input at lowest setting
Temperature Drift Span or zero, 0.02% of span/°C
Max. Sensor-Instrument 3,000 ft. (914 meters) w/ preamp,
Distance 30 ft. (9.1 meters) w/o preamp
Sensor Types Model Q25P pH w/ preamp - 5 wire input, or combination
style pH electrode w/ TC - 2 wire input
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 – Instrument Handle/Mounting
2.1 General
The Q45P Portable pH 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 Handle - Views

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Part 3 – Sensor Electrical Installation
3.1 General
The sensor cable can be quickly connected to the Q45 terminal strip by matching
the wire colors on the cable conductors. Keep signal cable away from AC power
lines, adjustable frequency drives, motors, or other noisy electrical signal lines.
3.2 Direct Sensor 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 2 - Bulkhead Connection

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Figure 3 - Sensor Connection