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How Go Wireless Temp Works
This probe uses a solid state temperature sensor, located at the tip of the probe, to
measure temperature. The sensor outputs a count with each increment of the count
representing 0.0625
C. This information is passed to the host application over the
wireless connection.
Go Wireless Temp has one button and three LEDs.
Button
Press the button once to turn on Go Wireless Temp. A red LED indicator
flashes when the unit is on.
Press and hold the button for more than three seconds to put Go Wireless Temp
into sleep mode. The red LED indicator stops flashing when sleeping.
Press and hold the button for more than eight seconds to reset the system. This
should not be necessary in normal operation.
Blue LED
Indicates charging status when Go Wireless Temp is connected to the Charging
Cable or Charging Station.
On – charging in progress
Off – charging is complete
Red LED Flashing
Indicates Go Wireless Temp is awake and ready to connect to the Go Wireless app
or Graphical Analysis.
Green LED Flashing
Indicates Go Wireless Temp is connected and taking data (the Green LED flashes
each time temperature is sampled).
Red and Green LED Off
Indicates Go Wireless Temp is in the lowest power sleep mode.
Calibration Information
There is not an option to calibrate Go Wireless Temp. Each device is carefully
calibrated as part of the manufacturing process.
Battery Information
Go Wireless Temp contains a small lithium-ion battery in the handle. The system is
designed to consume very little power and not put heavy demands on the battery.
Although the battery is warranted for one year, the expected battery life should be
several years. Replacement batteries are available from Vernier (order code:
GW-BAT-100).
Use only the Vernier Go Wireless Charging Cable or Go Wireless Charging Station
to charge the battery.
Storage and Maintenance of Go Wireless Temp
To store Go Wireless Temp for extended periods of time, put the device in sleep
mode by holding the button down for at least three seconds. The red LED will stop
flashing to show that the unit is in sleep mode. Over several months, the battery will
4
discharge but not be damaged. After such storage, charge the device for a few hours
and the unit will be ready to go.
Exposing the battery to temperatures over 35
C (95
F) will reduce its lifespan. If
possible, store Go Wireless Temp in an area that is not exposed to temperature
extremes.
Water Resistance
Go Wireless Temp can be submerged in water for limited periods of time. It has
been tested to a depth of 1 m for up to 30 minutes. However, submerging the sensor
impacts the radio operation by absorbing much of the energy. This may make it
difficult or impossible to connect to the sensor while submerged, particularly if there
are electrically noisy signals nearby such as pumps or motors.
Chemical and Water Tolerance
The metal shaft is constructed from grade 316
stainless steel.
†
This high-grade stainless steel
provides a high level of corrosion resistance for
use in the science classroom. Here are some
general guidelines for usage:
The probe handle is constructed of molded
plastic. While this material is chemical
resistant, we recommend that you avoid
submerging the probe beyond the stainless
steel portion in anything but water.
Always wash the probe thoroughly after use.
The probe can be left continuously in water
at temperatures within the range of
–40
C to 125
C. Continuous usage in
saltwater will cause only minor discoloration
of the probe, with no negative effect on
performance.
You can leave the probe continuously in most organic compounds, such as
methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, n-hexane, lauric acid,
paradichlorobenzene, phenyl salicylate, and benzoic acid. The probe should not be
left in n-pentane for more than 1 hour.
The probe can be left in strong basic solutions, such as NaOH, for up to 48 hours,
with only minor discoloration. We do not recommend usage in basic solutions that
are greater than 3 M in concentration.
The chart provides the maximum length of time we recommend for probe
exposure to some common acids. Probes left in an acid longer than these times
may bubble and/or discolor, but will still be functional. We do not recommend
probes be left to soak in any acid longer than 48 hours.
†
Grade 316 stainless steel has a composition of 0.08% carbon, 2.0% manganese, 0.75% silicon, 0.04%
phosphorus, 0.03% sulfur, 16-18% chromium, 10-14% nickel, 2-3% molybdenum, and 0.1% nitrogen.
Maximum acid exposure time
1 M HCl
20 min
2 M HCl
10 min
3 M HCl
5 min
1 M H
2
SO
4
48
hours
2 M H
2
SO
4
20
min
3 M H
2
SO
4
10
min
1 M HNO
3
48
hours
2 M HNO
3
48
hours
3 M HNO
3
48
hours
1 M CH
3
COOH 48
hours
2 M CH
3
COOH 48
hours
3 M CH
3
COOH 48
hours
1 M H
3
PO
4
48 hours
2 M H
3
PO
4
48
hours
3 M H
3
PO
4
48
hours
