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HMP41, HMP42 and HMP45 Probes
for HMI41 Indicator
Vaisala HUMICAP
®
Humidity Indicator
HMI41 can be used with any one of
the four probes to quickly and easily
measure humidity and temperature,
and to make other measurement
calculations such as dewpoint, wet
bulb temperature, absolute humidity
and mixing ratio.
The HMI41 has an easy-to-read LCD
display. Temperature readout is
available in either degrees Centigrade
or Fahrenheit. Calculated variables
are available in metric and non-
metric format.
Ideal for spot checking
applications
The HMI41 indicator with probes
is ideal for use in a variety of spot
checking applications such as plant
maintenance, air-conditioning system
installation and inspection, freezers
and storage and production areas.
Vaisala HUMICAP®
Humidity and
Temperature Probe
HMP41:
This probe is x-mounted directly
on the HMI41 indicator. It can be
upgraded to an HMP45 by purchasing
the HMH45 handle and cable option.
Vaisala HUMICAP®
Humidity and
Temperature Probe
HMP42:
The HMP42 probe can be used
for spot checking humidity and
temperature in applications which
require an extremely thin probe,
such as:
• for monitoring the drying of
structures during construction or
after water damage
The HMI41 indicator with the HMP41
probe.
HMI41 with the HMP42 probe.
HMI41 with the HMP45 probe.
• in tight places
• in ducts or chambers
• under a linoleum floor
The probe diameter is only 4 mm,
allowing access into very small, tight,
and hard-to-reach spaces.
Vaisala HUMICAP®
Humidity and
Temperature Probe
HMP45:
This probe for general purposes
features an extended spiral cable.
Vaisala HUMICAP®
Humidity and
Temperature Probe
HMP46:
See preceding data sheet.
Features/Benefi ts
▪
Humidity measurement range
0 ... 100 %RH
▪
Temperature measurement
range HMP41, HMP45: -20 ...
+60 °C (-4 ... +140 °F) HMP42:
-40 ... +100 °C (-40 ... +212 °F)
▪
For spot checking
measurements
▪
Versatile and easy-to-use
▪
The HMI41 Indicator can be
used with any of the four
available probes
▪
Extremely thin 4 mm probe
head (HMP42)
▪
Incorporates Vaisala HUMICAP®
Sensor, which provides high
accuracy, excellent long-term
stability, neglible hysteresis,
and insensitivity to dust and
most chemicals
▪
NIST traceable
(certifi cate included)
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