5
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Toll-Free 1-800-533-7533
7 Measuring the Humidity Ratio
The Humiport can calculate and
display humidity or mixing ratio
in g/Kg or gr/lb (gpp). In order
to properly calculate this value
the air pressure or altitude must
be known. To display the correct
humidity ratio value, the local
altitude must be set to within
±200 ft. of the local altitude.
To adjust altitude, first make sure
the display on the lower display
(sensor 2) is set to gr/lb (gpp).
Now scroll through the lower menu
items and select the lower right
arrow on the screen above the Alt. (ft) label on the case.
Move the wheel up and down to adjust the altitude. You
can adjust the altitude with
s
and
t
and confirm by .
For altitude in your area you can do a web search using
your city name and the work “elevation” or use the City
Altitude Guide available from Phoenix Restoration.
8 Changing The Battery
If the symbol “BAT” appears on the display, the batteries
have to be changed within a few hours. Open the battery
case on the back of the instrument. Remove the empty
batteries and insert new ones. Ensure batteries are
inserted to provide the correct polarity.
Important: The Humiport can be damaged if the batteries
are inserted incorrectly and reverse polarity results.
Use only EC LR6 AA batteries. Do not uses rechargeable
batteries. Use only high quality batteries.
Hold MAX MIN AVG
Sensor 1
88:88
-1.8.8.8.8
%rH °F °C
Sensor 1
-1.8.8.8.8
g/m
3
%rHdp°F °C
Unit1 Unit2 TimeDate
Auto Off CAL 12LH
g/kg g/lb Alt(ft)
9 Maintenance And
Adjustments
Clean the device with a damp cloth as necessary. Do not
use any cleaning fluids, use just plain water to dampen the
cloth. Do not touch the sensor. Ensure the unit is off while
cleaning.
When used for indoor environmental measurement, we
recommend annual calibration. Recalibration should be
carried out more frequently in a harsh environment.
Recalibration should only be performed by a calibration
laboratory, or by using a standard calibration method
such as use of saturated salt solutions. Regardless of
the method, calibrations should occur at a minimum of
two %RH concentrations. Humidity sensor can also be
calibrated to another recently calibrated humidity sensor.
Phoenix Restoration (Therma-Stor LLC) offers calibration
services for all types and makes of hand held temperature
and humidity monitors. For more information on the
Phoenix Calibration service call 1-800-533-7553.
10 Specifications
Measurement Range:
RH
0 to 95% RH
Temp
-4 to 122°F (-20 to 50°C)
Calculated Values:
Dew Point
°F, °C
Humidity Ratio
grams/Kg dry air,
grains/lb dry air (gpp)
Accuracy:
RH
±2% RH
Temp
±0.5°F at 32 to 103°F
otherwise ±0.9°F
(±0.3°C at 0 to 40°C
otherwise ±0.5°C)
Resolution:
RH
0.1%
Temp
0.1°F, (o0.1°C)
Response Time:
RH
T90 <6.0 seconds
General:
Supply Voltage
4-1.5V Battery
Battery Life
500 hours (typical)
Working Temp Range
32 to 122°F (0 to 50°C)
Storage Temp Range
-4 to 140°F (-20 to 60°C)
CE Compatiblility
EN61000-6-2, EN50147-3
Weight:
0.5 lbs. (200 g)