YSI 30 User Manual
YSI Model 30
µS
C
YSI Model 30M
Handheld Salinity,
Conductivity and
Temperature
System
Operations
Manual
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
i
ii
SECTION 1 INTRODUCTION
The YSI Model 30 Handheld Salinity, Conductivity, & Temperature System is a rugged, microprocessor 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
conductivity; temperature compensated conductivity; (in µS/cm or m S/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.
o
C), along with one of the following parameters:
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 has a 100ft cable length and also
has internal memory for saving 50 sets of data for later on screen recall. It 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.
YSI, Incorporated Model 30/30M 1
Introduction Section 1
YSI, Incorporated Model 30/30M 2
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 AAsize 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).
Battery chamber
cover
Hand strap
Thumb screw
Polarity marking
O-rings
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.
YSI, Incorporated Model 30/30M 3
Preparing the Meter Section 2
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.
Storage Chamber
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.
YSI, Incorporated Model 30/30M 4
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;
this may effect the reading slightly. Additionally, it is important that there not be any air bubbles
YSI, Incorporated Model 30/30M 5
Making Measurements Section 3
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:
¾ Conductivity -- A measurement of the conductive material in the liquid sample without regard
to temperature
¾ 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 25
Advanced Setup.
¾ 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:
o
C (or some other reference temperature which you choose). See Section 6,
¾ Recall -- Allows previously stored data to be displayed.
¾ 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
Salinity
with °C
Recall
(Model 30M ONLY)
Erase all
(Model 30M ONLY)
NOTE: When you turn the instrument off, it will “remember” which measurement m ode 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 µS or an mS. Additionally, the small portion of the display will show the
o
C flashing on and
off .
YSI, Incorporated Model 30/30M 6
Making Measurements Section 3
300.1uS
24.8
°C
°C Not flashing = Conductivity
°C Flashing = Specific conductance
If the instrument is reading Conductivity, the large numbers on the display will be followed by
either a µS or an mS. Additionally, the small portion of the display will show the
o
C NOT flashing.
If the instrument is reading Salinity, the large numbers on the display will be followed by a ppt.
3.3 AUTORANGING & RANGE SEARCHING
The YSI Model 30 is an autoranging instrument. This means that, regardless of the conductivity or
salinity of the solution (within the specifications of the instrument), all you need to do to get the
most accurate reading is to put the probe in the sample. This feature makes the Model 30 as simple
as possible to operate.
When you first place the Model 30 probe into a sample or calibration solution, and again when you
first remove the probe, the instrument will go into a range search mode that may take as long as 5
seconds. During some range searches, the instrument display will flash
movement from one range to another.
rANG to indicate its
rANG
The length of the range search depends on the number of ranges which must be searched in order to
find the correct range for the sample. During the range search, the instrument will appear to freeze
on a given reading for a few seconds then, once the range is located, will pinpoint the exact reading
on the display. The display may also switch to 00.0 for a second or two during a range search before
it selects the proper range.
During normal operation, the ENTER key (UP ARROW key on Model 30M) enables and disables
the autoranging feature of the instrument. We recommend that the instrument always be operated
using the autoranging feature. See Section 6, Advanced Setup if you need to switch to manual
ranging.
YSI, Incorporated Model 30/30M 7
Making Measurements Section 3
3.4 THE BACKLIGHT
At times it may be necessary to take measurements with the Model 30 in dark or poorly lit areas. To
help in this situation, the Model 30 comes equipped with a backlight which will illuminate the
display so that it can be easily read. To activate the backlight, press and hold down the LIGHT key.
The display will remain lit as long as the key is held down. When you release it, the light goes out to
preserve battery life.
YSI, Incorporated Model 30/30M 8
SECTION 4 SAVING DATA
y
The Model 30M is equipped with non-volatile memory that is capable of storing up to 50 different
sets of readings. Non-volatile means that you do not need to worry that your data will be lost due to
a power failure or interruption, such as when the batteries are removed. The Model 30M will also
assign a site identity number to each set of readings to allow easy review of the data. This feature is
useful in situations where transcribing data is difficult or not available.
NOTE: The Model 30 is NOT equipped with memory and cannot save data.
4.1 SAVING DATA TO MEMORY
1. While any parameter is displayed on the screen, press the ENTER key and hold for
approximately 2 seconds.
SAVE
01
The meter will flash SAVE on the display along with the current site identity is being used.
2. When all 50 sites are full, the display will flash FULL on the screen. This message will remain
on the screen (even after power down) until a key is pushed.
Site identit
FULL
Once you have acknowledged the memory is full, any subsequent saved data will begin overwriting
existing data starting with site #1.
YSI, Incorporated Model 30/30M 9
Saving Data Section 4
4.2 RECALLING STORED DATA
1. To put the Model 30M into the RECALL mode, press the MODE key until rcl is displayed on
the screen along with the site ID number in the lower right corner.
rcl
01
Site identity
2. Press the ENTER key to review the last set of data that was saved. The Model 30M will display
the conductivity and temperature. Another press of the ENTER key will display the specific
conductance and the temperature. Press the ENTER key again to review the salinity which is
also displayed with the temperature.
3. Press the UP ARROW key to increment through the saved sets of data.
4. Press the DOWN ARROW key to decrement through the saved sets of data.
NOTE: The Model 30M will recall data as a list. When the UP ARROW is pressed the Model 30M
will display the Site ID# for the previously recorded data. For example: If you are reviewing Site
ID# 5 and the UP ARROW is pressed, the Model 30M will display Site ID# 4. If you are reviewing
Site ID# 5 and Site ID# 5 was the last set of data stored, the DOWN ARROW key will display Site
ID# 1.
Here is an example of the Model 30M memory.
Site ID #1
Site ID #2
Site ID #3 If the UP ARROW key was pressed the Model 30M would display Site ID #2
Site ID #4
Site ID #5
4.3 ERASING STORED DATA
1. To erase the data that is stored into the Model 30M’s memory, press the MODE key until the
Model 30M displays ErAS on the screen.
ErAS
YSI, Incorporated Model 30/30M 10
Saving Data Section 4
2. Press and hold both the DOWN ARROW and ENTER keys simultaneously for approximately
5 seconds.
3. Successful erasure is indicated by the Model 30M flashing DONE on the display for 1 to 2
seconds. The instrument will automatically change to normal operation after completion.
dOnE
IMPORTANT: Data in all 50 site ID’s will be erased completely and will be lost forever. Do
not use the erase function until all recorded data has been transcribed to an
archive outside the Model 30M.
YSI, Incorporated Model 30/30M 11
Saving Data Section 4
YSI, Incorporated Model 30/30M 12
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