Spectrum 2120 Manuale utente
pH 110 Meter
PRODUCT MANUAL
Item # 2120
®
2
CONTENTS
This manual will familiarize you with the features and operation
of your new data logging pH 110 meter. Please read this
manual thoroughly before using your instrument. For customer
support, or to place an order, call Spectrum Technologies, Inc.
(800)248-8873 or (815) 436-4440
between 7:30 am and 5:30 p.m. CST,
FAX (815)436-4460,
e-mail: specmeters.com.
www.specmeters.com
Spectrum Technologies, Inc
3600 Thayer Court
Aurora, IL 60504
General Overview 3
Data Logger Operation 4
Identifying the Correct Com Port 6
Connecting to a PC 7
Logger Software 8
GPS Connection 10
Data Files 11
Specifications 12
Service and Support 14
Warranty 15
3
General Overview
Thank you for purchasing the data logging pH 110
meter from Spectrum Technologies, Inc. This
user’s guide deals with the features that are
unique to the data logging pH 100 meter. Infor-
mation on general meter operation is contained in
the accompanying Instruction manual.
The integrated data logger allows the user to eas-
ily collect field data with the pH 110 meter. The
logger can be used with or without GPS/DGPS.
After a set of data has been collected, it is
transferred to a PC using the included software.
The data is in ASCII text file format and can be
exported into mapping software or popular
spreadsheet software for analysis.
NOTE: THIS BOOKLET CONTAINS INSTRUC-
TIONS ON OPERATING THE DATALOGGER
AND MAINTAINING THE pH PROBE. INFOR-
MATION REGARDING THE METER’S GENERAL
OPERATION, CALIBRATION PROCEDURE,
AND DESCRIPTIONS OF ERROR MESSAGES
ARE DETAILED IN THE ACCOMPANYING MAN-
UAL.
4
The data logger has two modes of operation: Com-
munication and Measurement. These modes are
indicated by the green LED in the lower left corner of
the meter. When this light is flashing, the meter is in
Communication mode. When the light glows stead-
ily, the meter is in Measurement mode.
Communication Mode
When the meter is turned on, it will be in Communi-
cation mode for approximately 10 seconds. While in
this mode, the green LED will flash. It is only in this
mode that a user can initiate a logger communication
(download or reconfiguration). If communication be-
tween the logger and software is attempted during
this 10-second period, the logger will remain in Com-
munication mode indefinitely. The meter must be
turned off and then on to change to Measurement
mode (see following section).
Measurement Mode
Approximately 10 seconds after turning on the meter,
the LED light will glow steadily. This indicates the
logger is in Measurement mode. In this mode, you
can calibrate the meter and record data. When you
are finished collecting data, the meter must be put
into Communication mode by turning it off and back
on (see previous section). If you are collecting data
from several sites and need to turn off the meter be-
tween data collection sessions, wait until the meter
transitions from Communication to Measurement
mode after turning the meter back on.
Data Logger Operation
5
Calibration
The procedure for calibrating the meter is given in
the accompanying meter instruction manual.
Taking and Data Logging Measurements
When the probe is inserted in soil or water, the me-
ter’s LCD will immediately begin indicating the pH.
When this value stabilizes, the meter locks on to that
value and the LCD will display READY in the upper
right corner. To capture this value with
the data logger, press the HOLD/
ENTER button followed by the Print
button. The Print button is on the
lower right corner of the keypad next to
the Range button.
The LED also indicates whether the data logger is
receiving the GPS signal. See GPS Connection (p.
10) for more details.
Print button
6
Identifying the Correct
Com Port
The computer
Communications Port to
which the cable is
connected can be
identified by using a
paper clip.
1. Disconnect the serial
cable from the meter.
2. To bring up the Port
Selection screen, click on the Com Port Button, select
the com port to be tested and click the Port Test button.
Click the Test Port Now button. If the message
“Connection OK” is displayed, another device (such as a
modem) is probably connected to that port. If the
message “No Connection” is displayed, this port may be
the one connected to your serial cable and you can
proceed to the next step.
3. Place a paperclip on the end of the serial pin so that it
touches both the tip of the pin and the metal area
between the two black rings. Again click on the Test
Port Now button. If the message “Connection OK” now
appears, this is the com port connected to your serial
cable.
paper clip
or wire
NOTE: The meter does not short-circuit the serial
pin. Therefore, when the Test Port Now button is
clicked while the meter is connected, the “No
Connection” message will be displayed.
7
The pH 110 Meter software comes with a black PC
interface cable. This cable connects to the USB port
of your computer and to the meter’s computer port.
The port is located at the base of the meter (marked
RS-232). The meter’s configuration can be modified
by clicking on the Meter Settings button (see Meter
Settings, p. 8). The Com Port, Meter Type,
Download, Clear Memory and Meter Settings but-
tons are explained in the Logger Software section
(p. 8).
Note: Prior to 2014, the meter was shipped with a
gray cable that connected to a 9-pin serial port. This
cable will still work but may require a USB-to-serial
adapter.
Connecting to a PC
8
Meter Type
The Field Scout software
supports all of Spectrum
Technologies’ portable
data logging meters. Be
sure to select the pH 100
Meter from the Select
Meter Type screen
Meter Settings
Clicking on this button will bring up the Meter Set-
tings screen. This screen allows you to configure
the data logger. The Meter Name will be the title on
the first line of the downloaded files.
If the box below the logger name field is checked,
the logger will store GPS data only if it has been dif-
ferentially corrected. If the differential correction is
not found, only the pH
reading will be stored
in the data file. A time
zone correction should
be entered in the last
box. Appendix 1 (p.
12) lists time zone cor-
rections for several cit-
ies.
Logger Software
9
Download
After clicking the Download button, a progress bar
will confirm that data is being extracted from the log-
ger. When completed, the Save Data As box will
appear. From here you can give the data file a de-
scriptive name and select a folder in which to save it.
The folder selection field on the right allows you to
browse to any folder in your system.
When the file has been saved, the software will give
you the option of immediately viewing the file. The
data file is stored as a comma-delimited text file and
may be viewed in any text editor or spreadsheet soft-
ware.
Clear Memory
Data is not automatically removed from the logger
memory after a download. The Clear Memory but-
ton clears all data from the memory.
10
GPS Connection
Cable Connections
A GPS/DGPS cable (item # 2950CV5) is required to
connect the pH110 meter to a GPS unit. This cable
has a 9-pin male connection and a stereo pin that
connects to the meter’s data port. You will also need
a cable that allows the GPS unit to connect to a 9-pin
male serial port. If this cable doesn’t come standard
with your GPS unit, it should be available from the
manufacturer. This cable is generally used to upload
information from a computer to the GPS unit. These
components should be connected as shown in the
figure below.
GPS Setting
Your GPS unit must be set for NMEA 0183 input/
output messages. If the meter has trouble receiving
the GPS signal, check that it has the following set-
tings:
Data bits: 8 Stop bits: 1
Baud rate: 4800 bps Parity: None
Timing: 1 second GGA data string
Spectrum
GPS/DGPS
Cable
SPAD
Meter GPS
Unit
GPS computer
interface cable
pH110
Meter
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