HM70 Hand-Held Humidity and Temperature Meter for Spot

HM70 Hand-Held Humidity and Temperature Meter for Spot
P.O. Box 26, FI-00421 Helsinki, FINLAND
Tel: +358 9 894 91
Fax: +358 9 8949 2485
Email: [email protected]
www.vaisala.com/HM70
HM70 Hand-Held Humidity and Temperature
Meter for Spot-Checking Applications
Features/Benefits
• Multilingual user interface
• Shows measurement trends graphically
• Proven Vaisala HUMICAP® Sensor technology
• 3 probes, temperature measurement ranges between -70 and +180 °C
• Multiprobe operation; dewpoint and CO2 probes can also be connected
• Displays various humidity parameters
• Sensor preheat and chemical purge options for demanding conditions
• Data can be logged, and transferred
to a PC via MI70 Link software
• Rugged and reliable - even in extreme conditions
The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 is a highperformance, portable humidity reference that is exciting to use.
The Vaisala HUMICAP® Hand-Held
Humidity and Temperature Meter
HM70 is a user-friendly meter for
demanding spot-checking humidity
measurements. It is ideal for field
checking and calibration of Vaisala's
fixed humidity instruments.
Three probes to choose
from
Easy-to-use user interface
and three-variable display
The HM70 features a multilingual,
menu-based user interface, and a
clear graphical LCD display. Overall
three measurement parameters can be
displayed and logged into the meter's
memory at the same time. An analog
output option is also available.
The HMP75 is a general purpose probe
for humidity measurements between
-20 and +60 °C. The HMP76 is a long,
stainless steel probe for humidity
measurements between -50 and
+120 °C. It is especially suitable for
spot-checking in ducts. The HMP77 is
a small probe at the end of a 5-meter
cable. The probe is ideal for difficult-toreach areas and for on-site calibration
of Vaisala's process transmitters. The
measurement range is for temperatures
up to +180 °C.
Proven HUMICAP®
technology
One or two probes can be connected
simultanelusly. In addition, the HM70
supports the use of Vaisala's dewpoint,
carbon dioxide and moisture in oil
probes, allowing measurements in
multiparameter applications.
The chemical purge option maintains
measurement accuracy in environments
with high concentrations of chemicals.
The sensor preheat option reduces
measurement delays by keeping the
sensor dry when the probe is inserted
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The HM70 incorporates the latest
generation of the Vaisala HUMICAP®
Sensor. Its proven reliable and high
performance humidity measurement
ability is combined with better then
ever long-term stability. Additionally,
a very chemical durable sensor is
available to provide accuracy that lasts
in demanding conditions.
• NIST traceable (certificate included)
into hot and humid processes.
Calibration
The meter is calibrated at the factory
against traceable standards, and
delivered with a calibration certificate.
The HM70 is also available with
accredited calibration.
The HM70 probes can be sent to a
Vaisala Service Center for a traceable
recalibration.
MI70 Link
The optional MI70 Link Windows®
software and the USB connection cable
form a practical tool for transferring
logged data and real time measurement
data from the HM70 to a PC.
Stable performance in
demanding applications
The graphic display shows the stabilization
of measurements and process trends.
Vaisala Instruments Catalog 2008
Ref. B210712en rev. A
HM70
HUMIDITY
DEWPOINT
Technical Data
HMP75, HMP76 and HMP77 probes
Measured variables
MI70 measurement indicator
Indicator general
Relative humidity
Measurement range
0 ... 100 %RH
Accuracy (including nonlinearity, hysteresis and repeatability)
Menu languages
at +15 ... +25 °C (+59 ... +77 °F)
±1 %RH (0 ... 90 %RH)
±1.7 %RH (90 ... 100 %RH)
at -20 ... +40 °C (-4 ... +104 °F)
±(1.0 + 0.008 x reading) %RH
at -40 ... +180 °C (-40 ... +356 °F)
±(1.5 + 0.015 x reading) %RH
Factory calibration uncertainty (+20 °C / +68 °F)
±0.6 %RH (0 ... 40 %RH)
±1.0 %RH (40 ... 97 %RH)
(Defined as ±2 standard deviation limits.)
Response time (90%) at +20 °C (+68 °F) still air
17 s
HMP75 (with standard plastic grid)
60 s
HMP76 (with standard sintered bronze filter)
50 s
HMP77 (with standard plastic grid and stainless steel netting)
Sensor
HUMICAP® 180R
HUMICAP® 180RC (chemical purge, sensor preheat)
Typical long-term stability
better than 1 %RH / year
Temperature
Measurement range
HMP75
-20 ... +60 °C (-4 ... +140 °F)
HMP76
-50 ... +120 °C (-58 ... +248 F)
short time
-50 ... +180 °C (-58 ... +356 °F)
HMP77
-70 ... +180 °C (-94 ... +356 °F)
Accuracy at +20 °C (+68 °F)
±0.2 °C (0.36 °F)
Accuracy over temperature range
(see graph)
°C
0.7
0.6
0.5
0.4
0.3
0.2
0.1
°C
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-80
-60
-40
-20
0
20
40
60
Temperature sensor
80
100
120
140
160
180
Pt100 IEC751 1/3 class B
Calculated variables (typical ranges)
Dewpoint temperature
-20 ... +100 °C (-4 ... +212 °F)
Mixing ratio
0 ... 600 g/kg dry air
Absolute humidity
0 ... 600 g/m3
Wet bulb temperature
0 ... 100 °C (+32 ... +212 °F)
Enthalpy
0 ... 160 kJ/g
Water vapor pressure
0 ... 1000 hPa
The accuracies of these calculated variables are limited by the
accuracies of the measured variables on which they are based,
namely RH and T. The RH and T accuracies are stated above under
Measured Variables.
English, Chinese, French, Spanish,
German, Russian, Japanese, Swedish, Finnish
Display
LCD with backlight, graphic trend display of
any parameter, character height up to 16 mm
Probe inputs
1 or 2
Power supply
Rechargeable NiMH battery pack with AC-POWER
or 4xAA-size alkalines, type IEC LR6
Analog output
0 ... 1 VDC
Output resolution
0.6 mV
Data interface
RS-232 (accessible only with MI70 Link software)
Data logging capacity
2700 points
Alarm
audible alarm function
Operating temperature range
-10 ... +40 °C (+14 ... +104 °F
Operating humidity range
non-condensing
Housing classification
IP54
Weight
400 g
Battery operation time
Continuous use
48 h typical at +20 °C (+68 F)
Datalogging use
up to 30 days
Electromagnetic compatibility
Complies with EMC standard
EN61326-1, Portable Equipment
MI70 indicator + probe = HM70
Accessories
Carrying cases
for MI70 and HMP75/77 probe
for MI70 and HMP75/76 probe
Transmitter connection cables for
HMP230 Series
HMT330 & HMT100 Series
HM60/70/140 Series
HM20/30/130 Series
USB cable for Mi70
Analog output cable
Windows® software, includes PC connection cable
Sensor protection
HMP75
Plastic PC grid (HMP75 standard)
Membrane filter
Sintered bronze filter
HMP76/77
Plastic PPS grid
Sintered stainless steel filter
Sintered bronze filter (HMP76 standard)
PPS grid with SS netting (HMP77 standard)
MI70CASE
MI70CASE2
27159ZZ
211339
HMA6070
HMA2030
219687
27168ZZ
MI70LINK
6221
10159HM
DRW212987SP
DRW010276SP
HM47280SP
DRW212987SP
DRW010281SP
Dimensions
Dimensions in mm (inches)
HMP76
HMP77
HMP75
Probe general
Operating temperature range for electronics
-40 ... +60 °C
(-40 ... +140 °F)
Housing classification
IP65 (NEMA 4)
Housing material
ABS/PC blend
Probe material
Stainless steel (AISI316L)
Cable length between probe and indicator
1.9 m
Weight
HMP75
250 g
HMP76
350 g
HMP77
500 g
Vaisala Instruments Catalog 2008
Ref. B210712en rev. A
HUMICAP® is a registered trademark of Vaisala.
Specifications subject to change without prior notice.
© Vaisala Oyj
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