YSI 30 Manual de usuario
YSI Model 30
YSI Model 30M
Handheld Salinity,
Conductivity and
Temperature
System
Operations
Manual
µS
C
i
CONTENTS
Section 1 Introduction..................................................................................................................................................1
Section 2 Preparing The Meter....................................................................................................................................3
2.1 Unpacking..................................................................................................................................................................3
2.2 Warranty Card............................................................................................................................................................3
2.3 Batteries .....................................................................................................................................................................3
2.4 Storage Chamber........................................................................................................................................................4
2.5 Hand Strap .................................................................................................................................................................4
2.6 The Meter Case..........................................................................................................................................................4
Section 3 Making Measurements.................................................................................................................................5
3.1 Turning The Instrument On........................................................................................................................................5
3.2 Measurement Modes...................................................................................................................................................6
3.3 Autoranging & Range Searching................................................................................................................................7
3.4 The Backlight..............................................................................................................................................................8
Section 4 Saving Data....................................................................................................................................................9
4.1 Saving Data To Memory.............................................................................................................................................9
4.2 Recalling Stored Data.................................................................................................................................................10
4.3 Erasing Stored Data....................................................................................................................................................10
Section 5 Calibration.....................................................................................................................................................13
51 Before You Calibrate...................................................................................................................................................13
5.2 The Calibration Process..............................................................................................................................................13
Section 6 Advanced Setup.............................................................................................................................................15
6.1 Changing The Temperature Coefficient.....................................................................................................................15
6.2 Changing The Reference Temperature.......................................................................................................................16
6.3 Changing From Autoranging To Manual Ranging.....................................................................................................17
Section 7 Principles of Operation.................................................................................................................................21
7.1 Temperature Effect.....................................................................................................................................................21
7.2 Discussion Of Measurement Errors............................................................................................................................22
Section 8 Maintenance...................................................................................................................................................23
8.1 Cleaning And Storage.................................................................................................................................................25
8.2 Probe Precautions .......................................................................................................................................................25
Section 9 Troubleshooting............................................................................................................................................27
Section 10 Warranty And Repair .................................................................................................................................29
Appendix A Required Notice.....................................................................................................................................35
Appendix B Accessories And Replacement Parts ...................................................................................................35
Appendix C Temperature Correction Data..............................................................................................................39
Appendix D Conversion Chart....................................................................................................................................43
Appendix E Glossary...................................................................................................................................................45
Appendix F General Specifications............................................................................................................................47
ii
YSI, Incorporated Model 30/30M 1
SECTION 1 INTRODUCTION
The YSI Model 30 Handheld Salinity, Conductivity, & Temperature System is a rugged, micro-
processor based, digital meter with an attached YSI four electrode conductivity cell. The Model 30
is designed for use in field, lab, and process control applications and is available with cable lengths
of either 10, 25 or 50 feet. The body of the probe has been manufactured with stainless steel to add
rugged durability and sinking weight. The large Liquid Crystal Display (LCD) is easy to read and is
equipped with a back-light for use in dark or poorly lighted areas.
The Model 30's micro-processor allows the system to be easily calibrated with the press of a few
keys. Additionally, the micro-processor performs a self-diagnostic routine each time the instrument
is turned on. The self-diagnostic routine provides you with useful information about the cell
constant, function of the instrument circuitry, and the quality of the readings you obtain. For a list of
these diagnostic features, see Section 9, Troubleshooting.
The system simultaneously displays temperature (in oC), along with one of the following
parameters: conductivity; temperature compensated conductivity; (in µS/cm or mS/cm), and salinity
(in parts per thousand [ppt]). Though calibration is NOT required, a single calibration will adjust
the instrument, regardless of which parameter you wish to read. You can switch back and forth
from salinity, conductivity, and temperature compensated conductivity with a single push of the
MODE key.
A probe storage chamber is built into the instrument. This chamber provides a convenient place to
store the probe when the system is not in use, and provides protection for the electrodes within the
probe.
The instrument is powered by six AA-size alkaline batteries. A new set of alkaline batteries will
provide approximately 100 hours of continuous operation. When batteries need to be replaced, the
LCD will display a "LO BAT" message.
The YSI Model 30 instrument case is waterproof (rated to IP65). You can operate your Model 30 in
a steady rain without damage to the instrument.
The YSI Model 30M contains all the features of the Model 30, but also has internal memory for
saving 50 sets of data for later on screen recall and meets CE requirements for EMC Directive
89/336/EEC. For simplicity, this manual will refer to the Model 30 when discussing functions that
apply to both the Model 30 AND the Model 30M. References to the Model 30M indicate functions
that apply to the Model 30M ONLY.
Introduction Section 1
YSI, Incorporated Model 30/30M 2
YSI, Incorporated Model 30/30M 3
SECTION 2 PREPARING THE METER
2.1 UNPACKING
When you unpack your new YSI Model 30 Handheld Conductivity, Salinity & Temperature System
for the first time, check the packing list to make sure you have received everything you should have.
If there is anything missing or damaged, call the dealer from whom you purchased the Model 30. If
you do not know which of our authorized dealers sold the system to you, call YSI Customer Service
at 800-765-4974 or 937-767-7241, and we'll be happy to help you.
2.2 WARRANTY CARD
Before you do anything else, please complete the Warranty Card and return it to YSI. This will
record your purchase of this quality instrument in our computer system. Once your purchase is
recorded, you will receive prompt, efficient service in the event any part of your YSI Model 30
should ever need repair.
2.3 BATTERIES
There are a few things you must do to prepare your YSI Model 30 for use. First, locate the six AA-
size alkaline batteries that were included. Use a screwdriver or a small coin to remove the
thumbscrew on the bottom of the instrument. This thumbscrew holds the battery-chamber cover in
place. The battery-chamber cover is marked with the words "OPEN" and "CLOSE."
NOTE: On some models, the battery cover thumbscrew may be unscrewed by hand (a screwdriver
may not be required).
There is a small label inside each of the two battery-chamber sleeves. These labels illustrate the
correct way to install the batteries into each sleeve of the battery-chamber.
Hand strap
Polarity marking
Thumb screw
Battery chamber
cover
O-rings
Preparing the Meter Section 2
YSI, Incorporated Model 30/30M 4
NOTE: It is very important that the batteries be installed ONLY as illustrated. The instrument
will not function if the batteries are installed incorrectly.
Turn the instrument on by pressing and releasing the ON/OFF key on the front of the instrument.
The liquid crystal display (LCD) should come on. Allow a few seconds for the instrument to
complete its diagnostic routine. Notice that the instrument will display the specific cell constant of
the probe at the completion of its diagnostic routine. If the instrument does not operate, consult
Section 9, Troubleshooting.
You may also want to take the instrument into a dark room and, with the instrument ON, hold down
the LIGHT key. The instrument back-light should illuminate the LCD so that the display can be
easily read.
2.4 STORAGE CHAMBER
The Model 30 has a convenient storage chamber built into the instrument’s side. This chamber
provides an ideal storage area for the probe during transport and extended non-use.
An optional sponge is available from YSI that will fit inside the storage chamber and provide a
moist environment for probe storage should your application or operational procedures require it.
See Appendix B, Accessories and Replacement Parts.
2.5 HAND STRAP
The hand strap is designed to allow comfortable operation of
the Model 30 with minimum effort. If the hand strap is
adjusted correctly, it is unlikely that the instrument will be
easily dropped or bumped from your hand.
To adjust the hand strap on the back of the meter, unsnap the
leather cover and pull the two Velcro strips apart. Place your
hand between the meter and the strap and adjust the strap length so that your hand is snugly held in
place. Press the two Velcro strips back together and snap the leather cover back into place.
2.6 THE METER CASE
The meter case is sealed at the factory and is not intended to be opened, except by authorized
service technicians. Do not attempt to separate the two halves of the meter case as this may damage
the instrument, break the water-proof seal and may void the manufacturer's warranty.
Storage Chamber
YSI, Incorporated Model 30/30M 5
SECTION 3 MAKING MEASUREMENTS
The YSI Model 30 is factory calibrated. This means that once you have put batteries in the
instrument, you are ready to begin taking readings immediately.
The following diagram is an overview of the operation of the Model 30 and 30M. Note the
difference in key strokes between some of the 30 and 30M functions. See the following pages for
details of operation.
3.1 TURNING THE INSTRUMENT ON
Once the batteries are installed correctly, press the ON/OFF key. The instrument will activate all
segments of the display for a few seconds, which will be followed by a self test procedure which
will last for several more seconds. During this power on self test sequence, the instrument’s
microprocessor is verifying that the instrument is working properly and will display the cell
constant of the probe when the self test is complete. If the instrument were to detect a problem, a
continuous error message would be displayed. See Section 9, Troubleshooting for a list of error
messages.
After the self test procedure is complete, the temperature will be displayed in the lower right of the
display and the instrument is ready to make a measurement. Simply insert the probe into the liquid
sample about which you would like to receive information. It is important that the probe be inserted
into the liquid deep enough so that the hole on the side of the probe is completely covered by the
liquid. If possible, do not allow the probe to touch any solid object while you are taking readings;
Making Measurements Section 3
YSI, Incorporated Model 30/30M 6
this may effect the reading slightly. Additionally, it is important that there not be any air bubbles
around the probe electrodes. To dislodge any bubbles which might have formed, move or shake the
probe vigorously several times before recording the measurement.
3.2 MEASUREMENT MODES
The Model 30 has three modes as follows:
!Conductivity -- A measurement of the conductive material in the liquid sample without regard
to temperature
!Specific Conductance -- Also known as temperature compensated conductivity which
automatically adjusts the reading to a calculated value which would have been read if the
sample had been at 25oC (or some other reference temperature which you choose). See Section
6, Advanced Setup.
!Salinity -- A calculation done by the instrument electronics, based upon the conductivity and
temperature readings.
Temperature is displayed in conductivity, specific conductance and salinity modes.
The Model 30M has two additional modes:
!Recall -- Allows previously stored data to be displayed.
!Erase all -- Allows ALL previously stored data to be deleted.
To change between modes, simply press and release the MODE key. The instrument will cycle
through the modes as follows:
Conductivity
with °C Specific
Conductance with °C Recall
(Model 30M ONLY) Erase all
(Model 30M ONLY)
Salinity
with °C
NOTE: When you turn the instrument off, it will “remember” which measurement mode you used
last and will return to that mode the next time it is turned on.
When changing modes, carefully observe the small legends at the far right side of the LCD. If the
instrument is reading Specific Conductance, the large numbers on the display will be followed by
either a µ
µµ
µSor an mS. Additionally, the small portion of the display will show the oC flashing on
and off .
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