PTHM20
INSTRUCTION MANUAL
Humidity
Wet
Dew
& Temperature Meter &
Bulb
Temperatue
Point
Temperatue
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TABLET OF CONTENTS
TITLE
1. INTRODUCTION
2.
FEATURES
3.
SPECIFICATIONS
4.
PANEL DESCRIPTION
5.
HUMIDITY AND
MEASUREMENTS
6.
BATTERY REPLACEMENT
AIR
TEMPERATURE
1. INTRODUCTION
The digital Humidity & Temperature Meter & Wet Bulb
Temperature Dew Point temperature has been designed to
Meter,
combine the functions of Humidity
Bulb Temperature and Dew point temperature.
Wet
It
is
an
ideal Humidity & Temperature Meter Instrument with
scores of
Engineer and professional use.
The Humidity
temperature semiconductor sensor. This operation manual
contains general information and specification.
practical applications for laboratorial, industrial,
& Temperature Meter
Temperature Meter,
is
for use a humidity &
2. FEATURES
• Fast Response Time %RH: 10S (90% at
• High Accuracy
• Dew PointTemperature
• Wet Bulb Temperature
• Resolution
Max Hold and Data Hold Function
•
• Micro Processor-based Design
• Dual Display Temperature & Humidity
• Auto Power
• Backlight
•
Mini Size
• Size (H*W*D): 225*45*34mm
• Weight: 200g
0.01
Off,
%RH, 0.01
(-22°F~212°F/-30°C ~100°C)
(32°F~176°F/-0°C~80°C)
°F/0.01 °c
Disable Sleep Mode
25°
C still air)
1
3. SPECIFICATIONS
Display: Large
Sensor Type: A single chip relative humidity and temperature
Response Time:
Accuracy
Sampling Rate: 2.5 samples per second
Polarity: Automatic, (-)negati
Over-range: "OL" mark indication.
Low Battery
Operating
Storage
Auto
Power Off: Meter automatically shuts down after
To
overri
press holdlbacklight button, t
display appears,
on
the
LCD.
Power: One standard 9V, NEDA 1604 or 6F22 battery.
Dimensions/Wt.:
4-1/2
dual digital LCD display
multi sensor module comprising a calibrated
digital output.
%RH:10S (90% al +25
Note: Accuracy
ambient temperature range:
to
Indication: The
Conditions: 32
Conditions
de
Auto Pow
release
The
unit
will
225 (H) x 45
28°C)
: 14 to 140°F (-
non-condensing
approx.
Mode)
er
is
specified for the following
ve
polarity i ndicalion.
..
1-+ 1 " is displayed when the
battery voltage drops below the
opera-ling level.
to 104"F
non-condensing
15
minutes of inactivity (Sleep
Off
function
hen
both
not auto power
(Non-Sleep
press power button. After
buttons.
(W) x 34
with
"('
slill air)
(0
to
40°C); < 80%
10
to
60"C); <80%
Icon"
c:
..
off
now.
(0) mm/200g
64
will
backlight
to
82°F (18
Mode):
not
RH
RH
Firstly
the
full
shown
2
Humidity
Humidity:
Temperature: -22°F - 212°F, -30°C- 100°C
Resolution : 0.
Humidity
Note: The measuring range
Air
/ Temperature Measurement Range:
0%-100%RH
01 % RH
Accuracy: ± 2%RH (at 25°C,
80% and below 20% the deviation is not specified.
Temperature
, 0.01"F
(c.
± 2.5%RH (at other ranges)
is
from
0%
Accuracy
: ± 0.5°CI± O.goF(at 25°C}
± 0.8°CI± 1.5"F(all other ranges)
20%-80%
to 100%, but above
RH).
3
4.
PANEL
(D
-----tH
DESCRIPTION
HOLD
REL
MAX
MIN %
RH
@
--"i'--loL-----t-
- @
4
7)-------l-\-lll--
CD
Humidity / Air
Temperature Semiconductor Sensor inside.
® LCD Display:
·C, T , %RH dew point, wet bulb and low battery "
MIN /MAX HOLD, indication.
® MAX}
@
@ Power ON/OFF
@ HOLD
(J)
MIN
MIN Recording mode (manual range
proper range before
MAXIMIN reading
once
to
select MIN. Press again to select MAX. Press and
hold the Button
Recording.
"F,"C,
Dew
Point, Wbt select Button
Wet Bulb Measurement
IBacklight
hold function . The reading will
enter
Hold button is pressed.
Press Hold/backlight Button for
or
off
backlight function.
Battery
Compartment
Temperature Probe : Humidity & and
4-1/2
dual digi
Button: Press MAXIMIN button
selecting MAX
will
for
over 2 second
Point,
Wbt Select
Button:
Button:
ts
LCD display with units
only)
MIN
to
not exceed the testing range. Press
to
turn
Button:
10
enter select
Turn the meter power ON/OFF.
Press Holdlbacklighl Button to
ove
Press T
'F,
be
r 2 seconds to turn on
01
BAT"
to
enter MAX,
. Select the
ensure that the
off
MAX, MIN
,r:
, Dew
'C ,Dew Point,
held when Data
5
5. HUMIDITY AND AIR TEMPERATURE
MEASU-REMENTS
1 . Hold the probe in the area to be tested & allow
adequate time for readings to stabilize.
2. Press °F ,'C, dew poi
select
OF
,
"C,
dew point Wet Bulb Measurement.
3. Read the Relative Humidity and Air Temperature, dew
point temperature wet
NOTE:
nt,
WBT select Button to enter
bulb temperature.
Do not immerse the probe in liquid; it is intended for use
only.
Warning:
Don
't expose the sensor to direct sunlight ( in solation ).
Don't touch or
6.
BATTERY REPLACEMENT
If
the sign "
that the battery
replace the exhausted battery with new battery.
and
battery N
manipulate the sensor.
I':'
+1
" appears
should be replaced. Open the battery case
EDA
1604, 6F22 or equivalent).
on
the LCD display, it indicates
(1
6
in
air
x 9V
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