AquaMetrix Aqua-Check User manual

Aqua-Check™Water Analyzer
Operator’s Manual
4-30 Royal Crest Crt., Markham, On, L3R 9W8
Phone # [phone] Fax # [phone] Toll Free # 1-800-742-1413
www.aquametrix.com

Notice
The information contained in this document may be revised without notice.
AquaMetrix shall not be liable for errors contained herein or for incidental, or consequen-
tial, damages in connection with the furnishing, performance, or use of this material.
No part of this document may be reproduced or photocopied, or translated to another
language, without the prior written consent of AquaMetrix.
Rev. 2.1 — August 2000
AquaMetrix Part #291357
Printed in Canada
Copyright 2001–2004 AquaMetrix

Limited Warranty
AquaMetrix warrants each Aqua-Check Water Analyzer against defects in materials and
workmanship under normal use and service for a period of one (1) year (except for the
sensors and battery). Sensors are warranted for ninety (90) days. The battery is not covered
by this warranty. Equipment installed by AquaMetrix is warranted from the installation
date; all other equipment is warranted from the ship date. If purchaser schedules or delays
installation more than 90 days after delivery, then warranty period starts on the 91st day
from date of shipment. This warranty extends only to the original purchaser. AquaMetrix
will, at its option, repair or replace equipment that proves to be defective during the
warranty period, provided the equipment is returned to AquaMetrix at the expense of the
purchaser. Parts, labor, and return shipment to the customer shall be at the expense of
AquaMetrix.
Software and firmware designed by AquaMetrix for use with a CPU will execute its
programming instructions when properly installed on that CPU. AquaMetrix does not
warrant that the operation of the CPU, software, or firmware will be uninterrupted or error-
free.
This warranty shall not apply to defects originating from:
•Improper maintenance or operation by purchaser.
•Purchaser-supplied accessories or consumable.
•Modification or misuse by purchaser.
•Operation outside of the environmental and electrical products specifications.
•Improper or inadequate site preparation.
•Purchaser-induced contamination or leaks.
THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF MER-
CHANTABILITY, FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR
USE. OI ANALYTICAL SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT, OR OTHER-
WISE.
Any service requests or questions should be directed to the Technical Support Department
at 1-800-742-1413, [email protected].

Table of Contents
Chapter 1: Introduction
Introduction.......................................................................................................1
Power.................................................................................................................1
Specifications....................................................................................................2
Options ..............................................................................................................3
Safety Information............................................................................................4
Chapter 2: Description of Components
Water Analyzer Meter ......................................................................................5
Water Analyzer Probe ......................................................................................6
Chapter 3: Operation
Removing the pH Boot ....................................................................................7
Preparing the Dissolved Oxygen Sensor........................................................7
Probe Connection .............................................................................................8
Connecting the Probe to the Meter...........................................................8
Disconnecting the Probe from the Meter.................................................8
Turning on the Water Analyzer ......................................................................8
Storing Readings ..............................................................................................9
Setup Instrument Mode....................................................................................9
Temperature Display .................................................................................9
pH Display..................................................................................................9
Oxygen Display .......................................................................................10
Oxygen Compensation............................................................................10
Oxygen Calibration Value ......................................................................10
Conductance Display...............................................................................11
Conductivity Compensation ...................................................................11
Pressure Compensation ...........................................................................12
Calibration.......................................................................................................12
Temperature Sensor Calibration .............................................................13
Dissolved Oxygen Sensor Calibration ...................................................13
pH Sensor Calibration .............................................................................15
Conductivity Sensor Calibration.............................................................15
Review Log.....................................................................................................16
Clear Log.........................................................................................................17
RS-232 Option ................................................................................................17
Timed Readings—Auto Logging ...........................................................17
RS-232 Interface Procedure ....................................................................18
Chapter 4: Maintenance
General Sensor Maintenance.........................................................................21
Dissolved Oxygen Sensor Maintenance.......................................................22
pH Electrode Maintenance ............................................................................22
Conductivity Sensor Maintenance ................................................................23
Temperature Sensor Maintenance.................................................................23
Probe Storage ..................................................................................................24

Chapter 5: Troubleshooting
Troubleshooting..............................................................................................25
Index
Index................................................................................................................27

Chapter 1 1
Introduction
Chapter 1
Introduction
The Aqua-Check Water Analyzer is a compact, rechargeable, battery-operated,
field instrument that simultaneously measures the dissolved oxygen level, pH,
conductivity, and temperature of water and aqueous solutions.
The operator can elect to display either uncompensated values or values that have
been compensated for external effects. In the compensated mode, the conductivity
and pH values will be compensated for temperature and the dissolved oxygen
reading for temperature, salinity, and atmospheric pressure.
All of these parameters, except atmospheric pressure, are measured with a single
compact probe that is equipped with a specific cable length (10', 25', 50', 100', 150',
and 200' are the standard lengths). This allows remote measurements to be taken,
without the need to draw a sample.
The Water Analyzer also contains a built-in measurement log to manually store
readings. This allows up to 199 sets of measurements to be saved in the field for
later review.
Power
The battery in the Water Analyzer will provide about 8 hours of continuous
operation (6 hours when using the RS-232 or barometer options). A low battery
signal will appear when approximately one hour of use is left. The meter has an
auto-shutoff safety feature that disconnects the power before the battery voltage
drops below a level dangerous to the memory. Recharge time for the battery is 5.5
hours. The Water Analyzer contains a back-up battery and will retain the stored
calibration information and the measurement log for at least 30 days without
external power.
An AC adapter/charger is provided for charging the Water Analyzer. An optional
12 V automobile cigarette lighter adapter is available. Extreme temperature during
recharging is not recommended. It is also recommended that the vehicle not be
started while the Water Analyzer is plugged in.
The Water Analyzer uses a sealed lead-acid gelled electrolyte battery. Unlike a
NiCad battery, these batteries can be recharged before they have been fully dis-
charged. Incomplete charge and discharge cycles will have little effect on battery
life or capacity. The battery is also protected from overcharge by an internal
battery maintenance circuit that allows the unit to be left connected to the AC
adapter/charger whether the meter is in use or not. The battery requires recharging
at least once every 3–4 months during extended periods of nonuse.

2Aqua-Check Water Analyzer Operator’s Manual
Rev. 2.1
Specifications
Data Storage
•The Water Analyzer stores 199 sets of readings. A log number is assigned
when the storage button is pressed and displayed when readings are being
reviewed.
Data Review
•Stored readings can be reviewed in Review Log Mode.
Battery
• 6 V rechargeable sealed lead acid.
Discharge Time
• 8 hours (6 hours with RS-232 option)
•Low battery indicator and automatic shutoff to prevent calibration and stored
reading memory loss
Sensor Unit Resolution Range Accuracy Compensation
pH pH 0.01 1–13 0.02 Temp (auto)
mV 1 ±500 ±2% None
Temp °C .1° 0–50 1 None
°F .1° 32–122 1.8 None
Cond mhos .1 µmho 0–99.9 ±3% Temp (auto)
1 µmho 0–999 ±3% (20° or 25°C)
.01 mmho 0–9.99 ±3% or none
.1 mmho 0–99.9 ±3%
Siemens .1 µS 0–99.9 ±3% Temp (auto)
1 µS 0–999 ±3% (20° or 25°C)
.01 mS 0–9.99 ±3% or none
.1 mS 0–99.9 ±3%
TDS .1 ppm 0–49.8 ±3% Temp (auto)
1 ppm 0–498 ±3% (20° or 25°C)
.01 ppt 0–4.98 ±3% or none
.1 ppt 0–49.8 ±3%
Oxygen ppm .1 ppm 0–20.0 ±2% to 5% Temp (auto),
Salinity, Opt.
%Sat 0 150.0 %Sat ±2% to 5% Temp (auto),
Salinity, Opt.
Press (auto)

Chapter 1 3
Introduction
Recharge Time
• 5.5 hours
Operation Temperature
• Meter: 0°–40°C
• Probe: 0°–50°C
Storage Temperature
• 5°–40°C
Dimensions
• Probe: 12" H x 1.5" D (30 cm x 3.8 cm)
•Meter: 7.5" H x 4.25" W x 1.5" D (19.2 cm x 10.9 cm x 3.8 cm)
Weight
• 5 lbs (2.27 kg)
Options
A kit of calibration standards is available. This kit contains quantities of pH 4, pH
7, and pH 10 buffers; pH boot solution; a set of conductivity standards (73.9 µS/
cm, 718 µS/cm, 6.67 µS/cm, and 58.6 µS/cm); a container of deionized water; a
package of oxygen sensor membranes; and oxygen filling solution.
Several factory installed hardware options are available:
• longer cable lengths,
• automatic barometric pressure compensation, and
•RS-232 computer interface with autodata logging capabilities.
Additional probes, of any cable length, may be ordered for a previously purchased
meter. Additional cable lengths cannot be retrofitted to existing probes.
The automatic barometric pressure compensation option may be added by the
factory to a previously purchased unit.
The RS-232 computer interface option allows parameter values, which have been
stored, to be downloaded via an RS-232 link to an IBM-compatible or Macintosh
computer. This enables the operator to incorporate data values directly into analy-
sis programs. Download software is provided for an MS-DOS®-based computer or
use your favorite communications software. Output is 1200 baud, and the output is
in ASCII format. The RS-232 option can be added by the factory at any time.

4Aqua-Check Water Analyzer Operator’s Manual
Rev. 2.1
Safety Information
Using the instrument in a manner not specified by the manufacturer may impair the
instrument’s safety protection. Whenever the safety protection of the Water
Analyzer has been compromised, disconnect the instrument from all power sources
and secure the instrument against unintended operation.
Operator Precautions
For operator safety, pay attention toWARNING and CAUTION statements
throughout the manual.
• A WARNING indicates a condition or possible situation that could result in
physical injury to the operator.
• A CAUTION indicates a condition or possible situation that could damage or
destroy the product or the operator’s work.
Warnings and precautions in this manual or on the instrument must be followed
during operation, service, and repair of the instrument. Failure to follow these
warnings and precautions violates the safety design standards and intended use of
the instrument. The manufacturer will not be liable for the operator’s failure to
comply with these warnings and precautions.
Safety Symbols
The following symbols are located on the instrument:
See accompanying instruction for more information.
Indicates a hot surface.
Indicates hazardous voltages.
Indicates earth (ground) terminal.

Chapter 2 5
Description of Components
Chapter 2
Description of Components
Water Analyzer Meter
[UP] and [DOWN] scroll through the menus and set values.
Battery Charger Inputconnects the meter to the battery charger.
ENTER selects menu items and skips calibration steps.
LCD Display displays operator prompts and measured values.
MODE selects the operating mode.
ON/OFF turns the Water Analyzer on and off.
Probe Connection connects the probe to the meter.
RS-232 Input/Outputjoins the RS-232 cable to the Water Analyzer Meter.
STORE stores displayed values in the measurement log and calibration informa-
tion.
LCD Display
Probe
Connection
Battery
Charger Input
RS-232
Input/Output
Figure 2.1. Water Analyzer Meter