Specifications

17
HMI 41/HMP 46 Hand Held Humidity/
Dewpoint Indicator and Field Calibrator
with High Temperature Probe
FEATURES
 ±1% RH accuracy (0...90%)
 ±2% (90...100%)
 -40...+212 °F (up to 356 °F for short periods)
 Serves as an easy-to-use field calibrator when
used with HMP 46 probe and calibration cables
 Versatile and easy to use
 Measures humidity and temperature
 Calculates dewpoint, wet bulb temperature,
absolute humidity and mixing ratio
 Full 0 to 100 %RH measurement
 Excellent stability
 Optional carrying case
 Optional calibration cables
 Available as complete calibration kit (HMK 41)
CALIBRATION KIT HMK41
HMK 41 includes HMI 41, HMP 46, NIST traceable
certificate of calibration, carrying case, and choice of
one of the following calibration cables:
Cable Part # for Calibrating
19116 HM60/70s, HM 140s, HMM 22D
19164 HMP230s, HMM 210
19165 HM20/30s, HMP 130s, HMM 30C
HIGH TEMPERATURE PROBE
The HMP 46 humidity and temperature probe is
designed for measurements in ducts or chambers in
humidities of 0...100%RH and at temperatures from
-40 to +212 °F (-40 to +100 °C). For short periods of
time the probe can even be used in temperatures of
up to +356 °F (+180 °C).
The HMP 46 probes structure is solid and rugged; its
stainless steel probe head is made to withstand rough
handling in mechanically demanding applications.
The probes long shaft can also reach otherwise
unreachable places, and can be used as a piercing
probe.
VERSATILE AND EASY TO USE
In addition to displaying the humidity and tempera-
ture readings, the HMI 41 can calculate dewpoint and
wet bulb temperature, absolute humidity and mixing
ratio - no more awkward conversion tables and
complex calculation.
The indicator has an easy-to-read two line liquid
crystal display. The display unit (metric or non-
metric) are easily selected.
These features, plus fast response time, high mea-
surement accuracy and excellent stability, as well as
the wide temperature range of the probe, make the
HMI 41/HMP 46 combination an ideal choice for the
most demanding applications.
HIGH PERFORMANCE SENSOR
The probes incorporate Vaisalas latest HUMICAP
®
sensor. This sensor has high accuracy, excellent long-
term stability and negligible hysteresis. Insensitive to
dust, particulate dirt and most chemicals, the
HUMICAP
®
is also used in Vaisalas industrial
humidity transmitters.
HMI 41 with HMP 46
HMK 41 Kit