FEATURES
• 4 in 1 professional measuring instrument:
Anemometer, Hygrometer, Thermometer, and Light
meter.
• Tiny bone shape with lightweight and small size case
design are suitable for handling with one hand.
• Wristlet design provides extra protection to the
instrument especially for user one hand operation.
• Low-friction ball bearing mounted wheel design
provides high accuracy at high and low air velocity.
• Exclusive photo diode and color correction lter light
sensor, spectrum meets C.I.E. photopic.
• High precision thin-lm capacitance humidity sensor
with fast response to the humidity changes.
• Standard type K (NiCr-NiAl) thermocouple input jack
suitable for all kinds of type K probe.
• Built- in microprocessor circuit assures excellent
performance and accuracy.
• Concise and compact buttons arrangement, easy
operation.
• Memorize the maximum and minimum value with
recall.
• °C/°F selectable by pressing button on the front
panel.
• Lux-Foot-candles selectable by pressing button on
the front panel.
• Air velocity measuring units selectable by pressing
button on the front panel for ve kinds of units.
• Multi channel display for relative humidity and
temperature measured values or air velocity and
temperature measured values at the same time.
• Zero button design makes light meter calibration.
• Hold function to freeze the current reading value.
SPECIFICATIONS
Display
1
3
/
-inch LCD display
Measurement Anemometer, Humidity,
Temperature, Light
Operating Humidity Max. 80% RH.
Operating Temperature 0 to 50 °C (32 to 122 °F)
Over Input Display Indication of “- - - -”
Power Supply 006P DC 9V battery
(Heavy duty type)
Power Consumption Approx. DC 6.2 mA
Weight 5¾ ounces (battery included)
Dimensions 7 x 2½ x 1¼ inch.
Measurement Range Resolution
ft/min 80 to 5910 ft/min 1 ft/min
m/s 0.4 to 30.0 m/s 0.1 m/s
Air
Velocity
km.h 1.4 to 108.0 km/h 0.1 km/h
MPH 0.9 to 67.0 mile/hr 0.1 MPH
knots 0.8 to 58.3 knots 0.1 knots
Temperature
(thermistor)
32 to 122°F 0.1 °F
0 to 50°C 0.1°C
Measurement Range Resolution
% RH 10 to 95% RH 0.1% RH
Humidity
Light
(auto range)
Temperature
(thermister)
Lux
Foot
Candles
Temperature (Type-K)
32 to 122 °F 0.1 °F
0 to 50 °C 0.1 °C
0 to 2,200 Lux 1 Lux
1,800 to 20,000 Lux 10 Lux
0 to 204.0 Fc 0.1 Fc
170 to 2,000 Fc 1 Fc
–148 to 2372°F 0.1°F
–100 to 1300°F 0.1°C
Measurement Range Accuracy
80 to 5910 ft/min
Air Velocity
0.4 to 30.0 m/s
1.4 to 108.0 km/h
0.9 to 67.0 mile/h
≤ 20 m/s : ± 3% F.S.
> 20 m/s : ± 4% F.S.
0.8 to 58.3 knots
32 to 122°F ±2.5°F
0 to 50°C ±1.2°C
< 70% RH: ±4% RH
10 to 95% RH
Humidity
≥ 70% RH: ± (4% or
reading + 1.2% RH)
32 to 122 °F ±2.5°F
0 to 50 °C ±1.2°C
Light
Temperature
(Type-K)
0 to 20,000 Lux
0 to 2,000 Fc
± 5% of reading + 8 digits
–148 to 2372°F ± (1% of reading +2°F
–100 to 1300°F ± (1% of reading + 1°C)
ft/min: feet per minute MPH: miles per hour
m/s: meters per second knots: nautical miles per hour
km/h: kilometers per hour Fc: foot candles
Fig. 1
3-1 Power Button
3-2 Hold Button
3-3 Max./Min. Button
3-4 Unit/Zero Button
3-5 °C/°F Button
Lux/Fc Button
3-6 Function Button
3-7 Air Flow Sensor
3-8 Thermocouple Input Sensor
3-9 R.H. Sensor
3-10 Light Sensor
3-11 LCD display
3-12 Battery Compartment/Cover
3-13 Wristlet
MEASURING PROCEDURE
Air Velocity Measurement
1) Power on the instrument by pressing the “ Power
Button” (3-1, Fig. 1).
2) Select the Anemometer function by pressing “Function
Button” ( 3-6, Fig. 1).
3) Press the “Unit/Zero Button” (3-4, Fig. 1) to select unit
that you want and then face the “Air Flow Sensor”
(3-7, Fig. 1) to the source of wind.
4) Allow time for the reading to become stable and note
the value indicated. From a practical point of view the
velocity may uctuate.
Temperature Measurement (Thermocouple)
1) Power on the instrument by pressing the “Power
Button” (3-1, Fig. 1).
2) Plug a type-K thermocouple probe in the
“Thermocouple Input Socket” (3-8, Fig. 1).
3) Select the Temperature function by pressing “Function
Button” (3-6, Fig. 1).
4) Contact the Thermocouple Sensor Head with
measuring object and the reading value will be
displayed on the LCD display.
Measuring Consideration of Temperature
Measurement (Thermocouple)
* Please make sure the polarity is correct when you
plug a thermocouple probe in the Temp. input socket.
* The temperature difference between thermocouple
probe and thermometer will cause an inaccurate
measuring result. Therefore, for the best measuring
and accuracy performance, whenever change a probe
or plug a new probe, thermal equivalent between
probe plug and meter’s input socket is a necessary
condition. Thermal equivalent procedure may take
few minutes and apply only when the probe has been
exposed to an ambient temperature different from the
meter.
Humidity & Ambient Temperature Measurement
1) Power on the instrument by pressing the “Power
Button” (3-1, Fig. 1).
2) Select the Relative Humidity function by pressing
“Function Button” (3-6, Fig. 1).
3) At the mean time the reading value of relative humidity
and temperature will be displayed on the LCD display.
4) When the meter is applied in a new environment, a
few minutes are required to reach a stable condition.
Light Measurement
1) Power on the instrument by pressing the “Power
Button” (3-1, Fig. 1).
2) Select the Light Measurement function by pressing
the “Function Button” (3-6, Fig. 1) until the light value
is displayed. The light display digits are oriented 180°
from the other function displays for easy exposure and
output reading of the light sensor.
3) Press the “Lux/Fc Button” (3-5, Fig. 1) to select
measuring unit “Lux” or “Fc”.
Zero Offset Adjustment of Light Function:
* For best results zero the light sensor prior to use in a
dark environment. Placing the light sensor end of the
meter under a desktop or at surface so as to block
any light can accomplish this. Then press the “Unit/
Zero Button” (3-4, Fig. 1) to set the meter indication to
zero.
* Zero point can drift due to environment temperature
and battery power change as well as for other
reasons. It is recommended that the zero be checked
frequently using the above procedure.
OTHER FUNCTIONS
Hold Function
Whenever press the “Hold Button (3-2, .Fig. 1)” will
freeze the current reading value with a “HOLD” symbol
on the display.
Data Record Function
1) The Data Record function records & displays the
maximum and minimum reading values. Start the
Data Record function by pressing the “Max./Min.
Button “(3-3, Fig. 1) once. There will be a “REC”
symbol on the display.
2) With the REC symbol on the display:
(a) Press the “ Max./Min, Button” (3-3, Fig. 1) once
and the Max symbol along with the maximum
value will appear on the display.
(b) Press the “Max./Min. Button” again, the “Min”
symbol along with the minimum value will appear
on the display.
(c) To exit the memory record function, press the
“Max./Min. Button” continuously for at least 2
seconds. The display will revert to the current
reading.
(d) Clear the Max./Min. value recorded by pressing the
“Hold Button” (3-2, Fig. 1) once. Previous recorded
Max./Min. value will be given up and then revert to
the REC. function keep on recording.
Auto Power Off Disable
In order to prolong the battery life, the instrument has
“Auto Power Off” function. The meter will switch off
automatically if no buttons are pressed for around 10
minutes.
BATTERY REPLACEMENT
1) When the LCD display shows “ ” symbol,
it is necessary to replace the battery. However
measurement may still be made for several hours
after the low battery indicator appears.
2) Open the “Battery Compartment / Cover”
(3-12, Fig. 1) and remove the battery.
3) Install a 9V battery (Alkaline orHeavy duty type) and
then reinstate the cover.
ENVIRO-METER
INSTRUCTIONS
™
92-4332-40 Rev.0 112917
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