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Temperature Accuracy
This probe provides very accurate temperature readings. Near 0 C, readings are
accurate to ±0.2 C; near 100 C, readings are accurate to 0.5 C.
Important: Because of the non-linear nature of the Stainless Steel Temperature Probe,
you cannot re-calibrate this sensor. Probe-specific calibrations should not be necessary
when using this sensor.
Stainless Steel Temperature Sensor Chemical Tolerance
The body of this sensor is constructed from grade 316 stainless steel (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). This high-grade stainless steel
provides a high level of corrosion resistance for use in the science classroom.
Here are some general guidelines for using this probe:
1.
The probe handle is constructed of molded plasticized Santoprene®. While this
material is very chemical resistant, we recommend that you avoid submerging the
probe beyond the stainless steel portion.
2.
Always wash the probe thoroughly after use.
3.
The probe can be left continuously in water at temperatures within the range of
–25 to 125 C. Continuous usage in saltwater will cause only minor discoloration of
the probe, with no negative effect on performance.
4.
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.
5.
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.
6.
The following 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 in any acid longer than 48 hours.
12
Acid
1 M HCI
20 minutes
2 M HCI
10 minutes
3 M HCI
5 minutes
1 M H
SO
48 hours
2
4
2 M H
SO
20 minutes
2
4
Maximum Exposure Time
CBL 2 Technical Reference
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