Analytical Technology OL50LL User manual

Model Q45C2
Two-Electrode Conductivity
Monitor/Analyzer
Home Office European Office
Analytical Technology, Inc. Analytical Technology
6 Iron Bridge Drive Bank Chambers, 33 Stamford St.
Collegeville, PA 19426 Mossley, Ashton-u-Lyne OL50LL
Ph:[phone] Ph: 0800-018-4020
[phone] + 44 (0) 1457 832800
Fax: [phone] Fax: + 44 (0) 1457 839500
Email: [email protected] Email: [email protected]

PRODUCT WARRANTY
Analytical Technology, Inc. (Manufacturer) warrants to the Customer that if any part(s)
of the Manufacturer's products proves to be defective in materials or workmanship
within the earlier of 18 months of the date of shipment or 12 months of the date of start-
up, such defective parts will be repaired or replaced free of charge. Inspection and
repairs to products thought to be defective within the warranty period will be completed
at the Manufacturer's facilities in Collegeville, PA. Products on which warranty repairs
are required shall be shipped freight prepaid to the Manufacturer. The product(s) will be
returned freight prepaid and allowed if it is determined by the manufacturer that the
part(s) failed due to defective materials or workmanship.
This warranty does not cover consumable items, batteries, or wear items subject to
periodic replacement including lamps and fuses.
Gas sensors, except oxygen sensors, are covered by this warranty, but are subject to
inspection for evidence of extended exposure to excessive gas concentrations. Should
inspection indicate that sensors have been expended rather than failed prematurely, the
warranty shall not apply.
The Manufacturer assumes no liability for consequential damages of any kind, and the
buyer by acceptance of this equipment will assume all liability for the consequences of
its use or misuse by the Customer, his employees, or others. A defect within the
meaning of this warranty is any part of any piece of a Manufacturer's product which
shall, when such part is capable of being renewed, repaired, or replaced, operate to
condemn such piece of equipment.
This warranty is in lieu of all other warranties (including without limiting the generality of
the foregoing warranties of merchantability and fitness for a particular purpose),
guarantees, obligations or liabilities expressed or implied by the Manufacturer or its
representatives and by statute or rule of law.
This warranty is void if the Manufacturer's product(s) has been subject to misuse or
abuse, or has not been operated or stored in accordance with instructions, or if the
serial number has been removed.
Analytical Technology, Inc. makes no other warranty expressed or implied except as
stated above.

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Table of Contents
PART 1 - INTRODUCTION......................................................................................................................................4
1.1 General...........................................................................................................................................................4
1.2 Features..........................................................................................................................................................5
1.3 Q45C2 System Specifications .......................................................................................................................6
1.4 Q45C2 Performance Specifications...............................................................................................................8
PART 2 – ANALYZER MOUNTING.......................................................................................................................9
2.1 General...........................................................................................................................................................9
Figure 2-1 Q45 Enclosure Dimensions, AC Powered Units (ATI-0706) .....................................................10
Figure 2-2 Q45 Enclosure Dimensions, 2-Wire and Battery Units (ATI-0655)...........................................11
2.2 Wall or Pipe Mount .....................................................................................................................................12
Figure 2-3 Wall or Pipe mount Bracket (ATI-0707) .....................................................................................12
Figure 2-4 Wall Mounting Diagram (ATI-0709)..........................................................................................13
Figure 2-5 Pipe Mounting Diagram (ATI-0710.............................................................................................13
2.3 Panel Mount, 2-wire Transmitter.................................................................................................................14
Figure 2-6 2-Wire Panel Mount and Cut-out (ATI-0661) ............................................................................14
2.4 Panel Mount, AC Powered Monitor............................................................................................................15
Figure 2-7 115/230 VAC Panel Mount and Cut-out (ATI-0711) ..................................................................15
PART 3 – ELECTRICAL INSTALLATION..........................................................................................................16
3.1 General.........................................................................................................................................................16
3.2 Electrical......................................................................................................................................................16
Figure 3-1 Cable Description, Model Q25C2...............................................................................................17
3.2 Two-Wire.....................................................................................................................................................17
Figure 3-2 Loop-Power Connection, Q45C2 Transmitter ...........................................................................18
3.21 Load Drive...............................................................................................................................................19
3.3 115/230 VAC w/Relays...............................................................................................................................19
Figure 3-3 Line Power Connection(ATI-0747) .............................................................................................21
Figure 3-4 Relay Contacts (ATI-0712).........................................................................................................22
3.4 Sensor Wiring..............................................................................................................................................22
3.5 Direct Sensor Connection............................................................................................................................22
Figure 3-5 Sensor Cable Preparation............................................................................................................23
3.6 Junction Box Connection.............................................................................................................................24
Figure 3-6 Junction Box Interconnect Wiring (ATI-0748)...........................................................................24
PART 4 – CONFIGURATION.................................................................................................................................25
4.1 User Interface ..............................................................................................................................................25
Figure 4-1 User Interface (ATI-0654) ..........................................................................................................25
4.11 Keys.........................................................................................................................................................26
4.12 Display.....................................................................................................................................................26
4.2 Software.......................................................................................................................................................28
4.21 Software Navigation...............................................................................................................................28
Figure 4-2 Software Map..............................................................................................................................30
4.22 Measure Menu [MEASURE]...................................................................................................................31
4.23 Calibration Menu [CAL] ............................................................................................................................32
4.24 Configuration Menu [CONFIG].............................................................................................................33
Figure 4-3 Control Relay Example, Hysteresis and Two Opposite Phase Options ......................................36
Figure 4-4 Alarm Relay Example.................................................................................................................36
4.25 Diagnostics Menu [DIAG].........................................................................................................................40
PART 5 – CALIBRATION.......................................................................................................................................44

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5.1 Overview and Methods................................................................................................................................44
5.11 1-Point Calibration Explained .................................................................................................................44
5.12 Cell Constant Calibration Explained .......................................................................................................45
5.13 Zero Calibration Explained......................................................................................................................45
5.2 Performing a 1-Point Calibration.................................................................................................................45
Figure 5-1 NaCl Reference Solution for Calibration....................................................................................45
5.3 Performing a Cell Constant Calibration.......................................................................................................47
5.4 Performing a Sensor Zero Calibration.........................................................................................................47
5.5 Temperature Calibration..............................................................................................................................48
5.6 TC Factor Callibration.................................................................................................................................49
PART 6 – SYSTEM MAINTENANCE ...................................................................................................................50
6.1 System Checks.............................................................................................................................................50
6.2 Instrument Checks.......................................................................................................................................51
SPARE PARTS..........................................................................................................................................................54

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Part 1 - Introduction
1.1 General
The Model Q45C2 Conductivity monitor/analyzer provides an extremely versatile
measurement system for monitoring and control of resistivity/conductivity over
the range of 0.056 µS/cm to 2000 µS/cm. The instrument is offered standard as
a loop-powered transmitter for 2-wire DC applications. Since this system
configuration operates over only two low-voltage wires, it is ideal for remote
monitoring applications where line power is either unavailable or prohibitively
expensive to run.
With the optional 115/230 VAC power supply, the instrument may also be
configured for AC operation. This configuration is ideal when line power is
located close to the point of installation, and dual relay outputs and two 4-20 mA
outputs (one for conductivity and one for temperature) are required.
In all configurations, the Q45C2 displays conductivity, sensor temperature, TDS,
and output loop current on the secondary line of the custom display. The
instrument is used with the high performance Q25C2 sensors or other compatible
2-electrode sensors.
WARNING: Not following operating instructions may impair safety.
NOTE: Due to the high degree of flexibility of the Q45 system options, it is
important to note areas of the operating manual that detail these optional
features. The software features for the relay output option only appear when
those modules are connected and the system has been re-powered.

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1.2 Features
•Standard Q45C2 electronic transmitters are designed to be a fully isolated, loop
powered instruments for 2-wire DC applications. Optional integral power supply card for
115/230 VAC operation, and optional battery power supply card for portable datalogging
applications are available.
•Output Hold, Output Simulate, Output Alarm, and Output Delay Functions. All forced
changes in output condition include bumpless transfer to provide gradual return to on-
line signal levels and to avoid system control shocks on both analog outputs.
•AC power option provides dual SPDT relay operation and one additional isolated analog
output. Software settings for relay control include setpoint, deadband, phase, delay, and
failsafe. Software controls automatically appear in menu list when hardware option card
is plugged in and system power is applied.
•Two analog outputs on the relay version may be configured to track conductivity and
temperature. Both analog outputs can be individually programmed to fail to specific
values.
•Selectable Output Fail Alarm feature allows system diagnostic failures to be sent to
external monitoring systems.
•Large, high contrast, custom Super-Twist display provides excellent readability even in
low light conditions. 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.
•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 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.
•High reliability, microprocessor-based system with non-volatile memory back-up that
utilizes no batteries. Low mass, surface mount PCB construction containing no
adjustment potentiometers. All factory calibrations stored in non-volatile EEPROM.

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1.3 Q45C2 System Specifications
(Common to all variations)
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 Wall, panel, pipe/header.
Weight DC transmitter configuration: 1 lb. (0.45 kg)
Line-powered unit: 1.5 lb. (0.68 kg)
Display Large, high-contrast, Super-Twist (STN) LCD;
4-digit main display with sign, 0.75" (19.1 mm) seven-
segment characters;
12-digit secondary display, 0.3" (7.6 mm) 5×7 dot matrix
characters
Keypad 4-key membrane type with tactile feedback, polycarbonate
with UV coating, integral EMI/static shield and conductively
coated window
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
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 Selectable Pt1000 or Pt100 RTD
Displayed Parameters Main input, 0.0 µS to 2000 µS
TDS
Sensor temperature, -10.0 to 110.0 °C (14 to 230ºF)
Loop current, 4.00 to 20.00 mA

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Main Parameter Ranges Automatic or manual selection of the following:
0.00 to 20.00 MOhm
0.0 to 200.0 kOhm
0.000 to 2.000 µS
0.00 to 20.00 µS
0.0 to 200.0 µS
0 to 2000 µS
(NOT common to all variations)
Standard 2-Wire (Loop-powered) Transmitter:
Power 16-35 VDC (2-wire device)
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 Wall or pipe mount bracket standard. Bracket suitable for
either 1.5” or 2” I.D. U-Bolts for pipe mounting.
Conduit Openings Two PG-9 openings with gland seals
DC Cable Type Belden twisted-pair, shielded, 22 gauge or larger
Insertion Loss 16 VDC
115/230 VAC + Dual Relay Option:
Power 115/230 VAC ± 10%, 50/60 Hz, 10 VA max
Enclosure, AC Powered NEMA 4X, polycarbonate, stainless steel hardware,
weatherproof and corrosion resistant,
HWD: 4.9" (124 mm) x 4.9" (124 mm) x 5.5" (139 mm)
Mounting Options Wall or pipe mount bracket standard. Bracket suitable for
either 1.5” or 2” I.D. U-Bolts for pipe mounting.
Panel mount adapter optional.
Conduit Openings Three ½” NPT openings. Gland seals supplied but not
installed.
Relays, Electromechanical: Two 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.
Analog Outputs Two 4-20 mA outputs. Output one programmable for
conductivity. Output 2 programmable for temperature or
conductivity. Max load 550 Ohms for each output.
Outputs ground isolated and isolated from each other.

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1.4 Q45C2 Performance Specifications
(Common to all variations)
Accuracy 0.1% of span or better
Repeatability 0.1% of span or better
Sensitivity 0.05% of span
Stability 0.05% of span per 24 hours, non-cumulative
Warm-up Time 7 seconds to rated performance
Supply Voltage Effects ± 0.05% span
Instrument Response Time 2 seconds to 90% of step input at lowest setting
Temperature Drift Span or zero, 0.03% of span/°C
Max. Sensor-Instrument 300 ft. (91.4 meters)
Distance
Sensor Types Model Q25C2 - 4 wire input or equal

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Part 2 – Analyzer Mounting
2.1 General
All Q45 Series instruments offer maximum mounting flexibility. A bracket is
included with each unit that allows mounting to walls or pipes. In all cases,
choose a location that is readily accessible for calibrations. Also consider that it
may be necessary to utilize a location where solutions can be used during the
calibration process. To take full advantage of the high contrast display, mount
the instrument in a location where the display can be viewed from various angles
and long distances.
Locate the instrument in close proximity to the point of sensor installation - this
will allow easy access during calibration. The standard cable length of the
conductivity sensor is 15 feet. For sensor cables longer than 30 feet, use the
optional junction box (07-0100) and sensor interconnect cable (31-0057).
Due to the flexibility of the instrument design, some of the mounting features
change based on the configuration that was ordered. For example, the 2-wire
transmitter version is different for the 115/230 VAC controller because the rear of
the enclosure is much deeper when the AC powered unit is used. In addition, the
AC powered unit has an integrated panel mount flange requiring a single cutout
for flush mounting. In the 2-wire transmitter configuration, just the front of the
enclosure can be mounted, but the cutout also requires accurate location of 4
mounting holes. Refer to Figures 2-1 and 2-2 for detailed dimensions of each
type of system.

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Figure 2-1 Q45 Enclosure Dimensions, AC Powered Units (ATI-0706)
ENTER
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1" NPT
1.23
(31.2)
.82
(20.8)
BOTTOM VIEW
3.45
(87.6)
1.68
(42.7)
SIDE VIEW
4.38
(111.2)
4.38
(111.2)
ENTER
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FRONT VIEW
2.61
(66.3)
2.61
(66.3)
#10-32 UNF
(4 PLACES)
BACK VIEW
1.23
(31.2)
BOTTOM VIEW
PG-9 PORT
(2 PLACES)
Figure 2-2 Q45 Enclosure Dimensions, 2-Wire and Battery Units (ATI-0655)

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2.2 Wall or Pipe Mount
A PVC mounting bracket with attachment screws is supplied with each
transmitter (see Figure 2-3 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
(47-0005).
Figure 2-3 Wall or Pipe mount Bracket (ATI-0707)

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Figure 2-4 Wall Mounting Diagram (ATI-0709)
Figure 2-5 Pipe Mounting Diagram (ATI-0710
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2.3 Panel Mount, 2-wire Transmitter
The instrument may be panel mounted in two different ways: In the 2-wire
configuration, the front half of the enclosure may be separated and mounted by
itself, as shown in Figure 2-6. Note that the rear of the instrument enclosure is
not utilized in this mounting scheme. Holes must be drilled at the perimeter of
the panel cut-out that allow the enclosure screws to pass through and be
retained on the back side. User-supplied #8-32 nuts are used to fasten the
instrument from the back. The FIP instrument gasket remains intact during this
mount to seal to the panel.
Figure 2-6 2-Wire Panel Mount and Cut-out (ATI-0661)
PANEL MOUNT
3.54
(90.0)
3.54
(90.0)
3.75
(95.2)
3.75
(95.2)
#8-32 UNC
(4 PLACES)

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2.4 Panel Mount, AC Powered Monitor
Panel mounting of an AC powered monitor uses the panel mounting flange
molded into the rear section of the enclosure. Figure 2-7 provides dimensions for
the panel cutout required for mounting.
The panel mounting bracket kit must be ordered separately (part number 05-
0068). 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, you can proceed to mount the monitor in
the panel.
Figure 2-7 115/230 VAC Panel Mount and Cut-out (ATI-0711)
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Part 3 – Electrical Installation
3.1 General
The Q45 is powered in one of two ways, depending on the version purchased.
The 2-wire version is a 16-35 VDC powered transmitter. The integral 115/230
VAC version requires line power. Please verify the type of unit before
connecting any power.
WARNING: Do not connect AC line power to the 2-wire module.
Severe damage will result.
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 4-1). The AC power
supply contains a single 100mA (115V) or 50mA (230V) slo-blo fuse.
The fuse F1 is located adjacent to TB5 and is easily replaceable.
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.
3. This analyzer must be installed by specifically trained personnel in
accordance with relevant local codes and instructions contained in this
operating manual. Observe the analyzer's technical specifications and
input ratings. Proper electrical disconnection means must be provided
prior to the electrical power connected to this instrument, such as a
circuit breaker - rated 250 VAC, 2 A minimum. If one line of the line
power mains is not neutral, use a double-pole mains switch to
disconnect the analyzer.
3.2 Electrical
The Model Q25C2 comes standard with 15 feet of 6 conductor double shielded
cable (4 wires are used). The cable is permanently attached to the sensor, and a
PEEK cordgrip is used to seal around the cable. Nevertheless, the cable should
always be kept as clean and dry as possible.
DANGER: DO NOT connect sensor cable to power lines. Serious injury
may result.

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Take care to route sensor cable away from AC power lines, adjustable frequency
drives, motors, or other noisy electrical signal lines. Do not run signal lines in the
same conduit as AC power lines. Run signal cable in dedicated metal conduit if
possible. For optimum electrical noise protection, run an earth ground wire to the
ground terminal in the transmitter
Refer to Figure 3-1, Cable Description and Figure 3-2, Wiring Diagram for
illustrative details on electrical installation.
Figure 3-1 Cable Description, Model Q25C2
Only ATI’s custom 6-wire shielded interconnect cable must be used when
connecting the Model Q25C2 sensor to the analyzer. This high-performance,
double shielded, polyethylene jacketed cable is specially designed to provide the
proper signal shielding for the sensor used in this system. No substitutions can
be made. Substituted cables may cause problems with system performance.
3.2 Two-Wire
In the two-wire configuration, a separate DC power supply must be used to
power the instrument. The exact connection of this power supply is dependent
on the control system into which the instrument will connect. See Figure 3-2 for
further details. Any twisted pair shielded cable can be used for connection of the
instrument to the power supply. 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.

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Figure 3-2 Loop-Power Connection, Q45C2 Transmitter
Notes: 1. Voltage between Terminals 9 and 10 MUST be between 16 and 35 VDC.
2. Earth ground into Terminal 12 is HIGHLY recommended. This connection
can greatly improve stability in electrically noisy environments.
!

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3.21 Load Drive
The amount of resistance that the analog output can drive in the 115/230 VAC
version is fixed. However, in the two-wire configuration, the load-drive level is
dependant on the DC supply voltage provided to the controller.
The two-wire instrument can operate on a power supply voltage of between 16
and 35 VDC. The available load drive capability can be calculated by applying
the formula V/I=R, where V=load drive voltage, I=maximum loop current (in
Amperes), and R=maximum resistance load (in Ohms).
To find the load drive voltage of the two-wire Q45, subtract 16 VDC from the
actual power supply voltage being used (the 16 VDC represents insertion loss).
For example, if a 24 VDC power supply is being used, the load drive voltage is 8
VDC.
The maximum loop current of the two-wire Q45 is always 20.00 mA, or .02 A.
Therefore,
For example, if the power supply voltage is 24 VDC, first subtract 16 VDC, then
divide the remainder by .02. 8/.02 = 400; therefore, a 400 Ohm maximum load
can be inserted into the loop with a 24 VDC power supply.
Similarly, the following values can be calculated:
3.3 115/230 VAC w/Relays
In the 115/230 VAC configuration, a DC power supply is mounted into the inside
rear of the enclosure. The power supply must be ordered with the proper
operating voltage. Verify that the unit requires either 115 VAC or 230 VAC
before installing. Also verify that power is fully disconnected before attempting to
wire.
(Power Supply Voltage - 16)
.02 = RMAX
Power Supply Voltage (VDC) Total Load (Ohms)
16.0 0
20.0 200
24.0 400
30.0 700
35.0 950