Vernier Go Direct Salinity Manual

®
Go Direct Salinity
(Order Code GDX-SAL)
The Go Direct Salinity Sensor measures the
conductivity of a solution with a high ion
concentration. Salinity is the total of all non-carbonate salts dissolved in water,
usually expressed in parts per thousand (1 ppt = 1000 mg/L). Salinity is an
important measurement in seawater. The salinity level in seawater is fairly
constant, at about 35 ppt (35,000 mg/L).
Use this sensor for an accurate on-site measurement of salinity in ocean water.
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With this sensor, students can qualitatively see the difference between the
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ionic and molecular nature of substances in aqueous solution.
Use the sensor to confirm the direct relationship between salinity and ion
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concentration in an aqueous solution. Concentrations of unknown samples can
then be determined.
Monitor the rate of reaction in a chemical reaction in which dissolved ions and
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solution salinity varies with time due to an ionic species being consumed or
produced.
Note: Vernier products are designed for educational use. Our products are not
designed nor are they recommended for any industrial, medical, or commercial
process such as life support, patient diagnosis, control of a manufacturing
process, or industrial testing of any kind.
What's Included
Go Direct Salinity
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Micro USB Cable
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Compatible Software
See
www.vernier.com/manuals/gdx-sal
Go Direct Salinity.
Quick Start: Vernier Graphical Analysis
1. Charge your sensor for at least 2 hours before first use.
2. Turn on your sensor. The LED will blink red.
3. Launch Graphical Analysis, then click
4. Select your sensor from the list. The sensor ID is located on the sensor label
near the bar code. Note: If you don't see a list of available sensors, click
. After selecting your sensor, click
WIRELESS
5. This is a multi-channel sensor. Click
channel(s) you want to use.
6. Click . You are now ready to collect data.
DONE
Using other Vernier data-collection apps or want to connect via
USB?
Visit
www.vernier.com/start-go-direct
for a list of software compatible with
® ®
and Bluetooth
.
Sensor Data Collection
.
Pair
and select the
SENSOR CHANNELS
Charging the Sensor
Connect Go Direct Salinity to the included Micro USB Cable and any USB device
for two hours.
You can also charge up to eight Go Direct Salinity Sensors using our Go Direct
Charge Station, sold separately (order code: GDX-CRG). An LED on each
Go Direct Salinity indicates charging status.
Charging
Fully charged
Providing Power
Turning on the sensor
Putting the sensor in sleep
mode
Connecting the Sensor
See the following link for up-to-date connection information:
www.vernier.com/start/gdx-sal
Connecting via Bluetooth
Ready to connect
Connected
Connecting via USB
Connected and charging
Connected, fully charged
Charging via USB,
connected via Bluetooth
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Blue LED on steady while sensor is connected to
the Charging Cable or Charge Station.
Blue LED is off when charging is complete.
Press button once. Red LED indicator flashes
when unit is on.
Press and hold button for more than three seconds
to put into sleep mode. Red LED indicator stops
flashing when sleeping.
Red LED flashes when sensor is awake and ready
to connect via Bluetooth.
Green LED flashes when sensor is connected via
Bluetooth.
Blue and Green LED solid when sensor is con-
nected to Graphical Analysis via USB and unit is
charging. (Green LED is obscured by the blue
one.)
Green LED solid when sensor is connected to
Graphical Analysis via USB and the unit is fully
charged.
Blue LED is solid and green LED is flashing, but
the green flashing LED looks white because it is
overwhelmed by the blue.