Instructions

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effectively "cook" the unit.
Unfortunately, these causes of breakage are considered misuse and are not
covered by our warranty. In our experience, repair is not possible for this type of
damage.
The Go Direct Temperature Probe body is constructed from grade 316 stainless
steel
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, which provides a high level of corrosion resistance for use in the science
classroom. Here are some general guidelines for usage:
l The probe handle is constructed of molded plastic. While this material is
chemically resistant, we recommend that you avoid submerging the probe
beyond the stainless steel part into anything but water.
l The stainless steel portion of the probe can be left continuously in water at
temperatures within the range of –40 to 125°C. Continuous usage in
saltwater will cause only minor discoloration of the probe, with no negative
effect on performance.
l 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 one hour.
l 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.
l The chart provides the maximum length of time recommended 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.
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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.
Identifying the Sensor
When two or more sensors are connected, the sensors can be identified by
tapping or clicking Identify in Sensor Information.
Using the Product
Connect the sensor following the steps in the Getting Started section of this user
manual.
l Do not put directly into flames.
l Always wash the probe thoroughly after use.
Videos
View videos related to this product at www.vernier.com/gdx-tmp
Calibrating the Sensor
Go Direct Temperature cannot be calibrated by the user. It is custom calibrated
before it ships.
Specifications
Range –40 to 125°C (–40 to 257°F)
Maximum temperature that the sensor
can tolerate without damage
150°C
Accuracy ±0.25°C
Resolution 0.01°C
Handle range –10 to 45°C
Response time (time for 90% change in
reading)
10 seconds (in water, with stirring)
USBspecification 2.0
Wireless specification Bluetooth 4.2
Maximum wireless range 30 m
Dimensions 18.5 cm tall, 2 cm wide, 11.5 cm
shaft length
Battery 300 mA Li-Poly
Battery life (single full charge) ~24 hours
Battery life (long term) ~500 full charge cycles (several
years depending on usage)
Care and Maintenance
Overheating the sensor is the most common cause for this sensor to break. When
used in chemistry labs, students will sometimes lay the sensor on a hot plate and