Vaisala VaiNet RFL100 - Replacing a probe when one probe is connected

• To verify the measurement accuracy of the probe without disconnecting it from the data
logger, compare its readings with a calibrated reference instrument. Doing this at the
installation location of the data logger is referred to as a field check. See Field checking
using a reference instrument (page 45).
• To calibrate and adjust the probe using a Vaisala handheld meter and humidity and
temperature references, see Calibration and adjustment using HM40 (page 45) and
Calibration and adjustment using MI70 (page 50).
• To calibrate and adjust the probe and change its stored calibration information using a
computer, connect the probe to Vaisala Insight software. See Adjusting measurement
using Insight software (page 52).
5.4.1 Calibration and adjustment environments
Measurement probes can be calibrated in any environment that is within their operating
range. For example, output from TMP115 probe can be checked and compared at any
temperature in range -196 ... +90 °C (-320.8 ... +194 °F). However, probes should only be
adjusted in conditions where they have good accuracy. Refer to the accuracy specification of
the probe you intend to adjust. Probes will not accept the adjustment if the adjustment points
are unsuitable.
Because stabilization of temperature and humidity takes time, you should expect the
adjustment procedure to take at least 30 minutes for each adjustment point.
When working with equipment in extremely cold temperatures, use
appropriate personal protective equipment such as thermally
insulated gloves and clothing. Wear protective eyewear if working
with coolants such as liquid nitrogen, and observe safe handling and
storage precautions.
More information
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RFL100 technical specification (page 61)
5.4.2 Adjustment points and requirements
Table 10 Measurement adjustments of RFL100-compatible probes
Adjustment HMP110 HMP110T HMP115 HMP115T TMP115
1-point RH adjustment
2-point RH adjustment
1-point T adjustment
2-point T adjustment
2-point adjustments have the following requirements:
RFL100 User Guide M211861EN-D
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