Extech Instruments EN150 User manual

USER MANUAL

11 in 1 Environmental Meter

Model: EN150 and EN100

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EN100‐150‐en‐US_v1.610/16

Introduction

Congratulations on your purchase of this Extech Meter. The EN100/EN150 contains 11

professional meters built into one convenient package. This meter ships fully tested and calibrated

and, with proper use, should provide many years of reliable service.

Features

This 11-in-1 professional measuring instrument provides the following functions:

1. Anemometer uses a low-friction ball bearing mounted wheel design for high accuracy

2. Humidity meter uses a high Precision humidity sensor for fast response time

3. Light meter uses a photo diode and color correction filter light sensor; spectrum meets C.I.E.

photopic (EN100 only). The EN150 has a UV Light sensor

4. Optional PT100 RTD probe for external temperature measurements (EN100-PT)

Common Features

Built-in microprocessor circuit assures excellent performance and accuracy

Concise and compact button arrangement for ease of operation

Maximum and minimum values

Hold function freezes the current reading value

Front panel °C / °F selection button

Lux/Foot-candle selection button

Five (5) air velocity measurement units, selected by a front panel button

Dual display with simultaneous display of relative humidity and temperature or air velocity and

temperature

Automatic Zero for the light meter

Measurement capabilities for: Air Velocity, Air Flow, Wind Chill, Humidity, Dew Point, Wet

Bulb, Heat Index, Light (Visible – EN100) (UVA – EN150), Thermometer, Barometric

Pressure, Altitude

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EN100‐150‐en‐US_v1.610/16

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the

manual for further information.

Double insulation

Cautions

Improper use of this meter can cause damage, shock, injury or death. Read and understand

this user manual before operating the meter.

Inspect the condition of the probe and the meter itself for any damage before operating the

meter. Repair or replace any damage before use.

If the equipment is used in a manner not specified by the manufacturer, the protection provided

by the equipment may be impaired.

This device is not a toy and must not reach children’s hands. It contains hazardous objects as

well as small parts that the children could swallow. In case a child swallows any of them,

please contact a physician immediately

Do not leave batteries and packing material lying around unattended; they can be dangerous

for children if they use them as toys

In case the device is going to be unused for an extended period of time, remove the batteries

to prevent them from draining

Expired or damaged batteries can cause cauterization on contact with the skin. Always,

therefore, use suitable hand gloves in such cases

See that the battery is not short-circuited. Do not throw batteries into the fire.

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EN100‐150‐en‐US_v1.610/16

Meter Description

1. Air Speed Sensor

2. PT100 RTD probe input socket (optional)

3. LCD Display

4. Hold Button

5. REC button

6. Power Button

7. Light Sensor (EN100); UV Sensor (EN150)

8. Air Temperature and Relative Humidity sensor

Note: Altitude sensor and battery compartment on rear of unit

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EN100‐150‐en‐US_v1.610/16

Units of Measure Selections

Units Function

An Anemometer: ft/min, m/s, km/h, MPH, knots; Temp °C/ °F

AirFl Air flow: CFM, CMM

CHiLL Wind Chill: °C/ °F

rH Relative Humidity: %RH; Temp: °C/ °F

dP Dew Point: °C/ °F

_Et Wet Bulb Temperature: °C/ °F

HEAt Heat Index: °C/ °F

Light Visible light: Lux, Ft-cd (EN100 only)

U A UVA light: uW/cm², mW/cm² (EN150 only)

BAr Barometric pressure: mmHg, hPA, inHg

HigH Altitude: Ft, m

Pt Optional RTD probe (PT100)

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EN100‐150‐en‐US_v1.610/16

Operation

Powering the meter

1. Press the Power button to turn the instrument ON

2. If the meter does not turn on or if the " " low battery symbol appears in the display,

replace the batteries.

3. Press the Function button to select the measurement needed.

4. Press and hold the Power button for >4 seconds to power off the unit.

Anemometer - Air Velocity Measurement

1. Select the Air Velocity function by pressing and holding the "HOLD" button until the display

indicates “An” and then release the HOLD button.

2. Press and Hold the "REC" button until ‘Units’ appears. Press the Power button (up) to select

the desired units; Anemometer units (ft/min, m/s, km/h, MPH, or knots).

3. Press “REC” to select the temperature unit. C/F

4. Press the REC button again to return to the Air velocity measurement mode.

5. Face the air velocity sensor into the source of the airflow.

6. The display will show the air velocity and the ambient temperature.

7. Allow time for the reading to stabilize and note the values indicated.

Anemometer - Air Flow Measurement

1. Select the Air Flow function by pressing and holding the "HOLD" button until the display

indicates “AirFl” then release the HOLD button.

2. Press and Hold the "REC" button until ‘Units’ appears. Press the Power button (up) to select

CFM or CMM. Press the REC button to save the units.

3. To Enter the Square area of a duct, press the HOLD button momentarily. The HOLD icon will

appear on the display. Press and hold the “REC” button until m-2 or F-2 appear in the lower left

corner of the display. Use the Power (up) or HOLD button (down) to enter a Square area value.

Press the “REC” button to save.

4. Face the air velocity sensor into the source of the airflow.

5. The display will show the Air Flow measurement.

6. Allow time for the reading to stabilize and note the values indicated. Air velocity may fluctuate

slightly.

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EN100‐150‐en‐US_v1.610/16

Wind Chill Measurement

1. Select the Wind Chill function by pressing and holding the "HOLD" button until the display

indicates “CHiLL” then release the HOLD button.

2. Press and Hold the "REC" button until dCcF appears. Press the Power button (up) to select

C or F. Press the REC button to save the units.

3. Face the air velocity sensor into the source of the airflow.

4. The display will show the Wind Chill temperature.

5. Allow time for the reading to stabilize and note the values indicated. Air velocity may fluctuate

slightly.

Note: In order to obtain accurate measurements for Air Temperature, RH, Dew point, Wet bulb,

Wind Chill, and Heat Index, keep hands and fingers away from the sensor area at the bottom of

the meter.

Humidity & Ambient Temperature Measurement

1. Select the Relative Humidity function by pressing and holding the "HOLD" button until the

display indicates “rH” then release the HOLD button.

2. The humidity and air temperature readings will display on the LCD.

3. Allow several minutes of stabilization time to elapse each time the meter takes measurements

in a new location.

4. To reverse the display, press the HOLD button for less than 1 second; ‘HOLD’ will appear on

the display, press the Power button and the display will be reversed. Repeat the procedure to

revert the display’s orientation.

Note: In order to obtain accurate measurements for Air Temperature, RH, Dew point, Wet bulb,

Wind Chill and Heat Index, keep hands and fingers away from the sensor area (8) at the bottom of

the meter.

Dew Point Measurement

1. Select the Dew Point function by pressing and holding the "HOLD" button until the display

indicates “dP” then release the Hold button.

2. Press and Hold the "REC" button until dCcF appears. Press the Power button (up) to select

C or F. Press the REC button to save the units.

3. The Dew point temperature reading will display on the LCD in C or F units.

4. Allow several minutes of stabilization time to elapse each time the meter takes measurements

in a new location.

5. To reverse the display, press the HOLD button for less than 1 second; ‘HOLD’ will appear on

the display, press the Power button and the display will be reversed. Repeat the procedure to

revert the display’s orientation.

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EN100‐150‐en‐US_v1.610/16

Wet Bulb Measurement

1. Select the Wet Bulb function by pressing and holding the "HOLD" button until the display

indicates “_Et” then release the Hold button.

2. Press and Hold the "REC" button until dCcF appears. Press the Power button (up) to select

C or F units. Press the REC button to save the units.

3. The Wet bulb temperature reading will display on the LCD in C or F units.

4. Allow several minutes of stabilization time to elapse each time the meter takes measurements

in a new location.

5. To reverse the display, press the HOLD button for less than 1 second; ‘HOLD’ will appear on

the display, press the Power button and the display will be reversed. Repeat the procedure to

revert the display’s orientation.

Note: In order to obtain accurate measurements for Air Temperature, RH, Dew point, Wet bulb,

Wind Chill and Heat Index, keep hands and fingers away from the sensor area (8) at the bottom of

the meter.

Heat Index Measurement

1. Select the Heat Index function by pressing and holding the "HOLD" button until the display

indicates “HEAt” and then release the Hold button.

2. Press and Hold the "REC" button until dCcF appears. Press the Power button (up) to select

C or F units. Press the REC button to save the units.

3. The Heat Index temperature reading will display on the LCD in C or F units.

4. Allow several minutes of stabilization time to elapse each time the meter takes measurements

in a new location.

5. To reverse the display, press the HOLD button for less than 1 second; ‘HOLD’ will appear on

the display, press the Power button and the display will be reversed. Repeat the procedure to

revert the display’s orientation.

Note: In order to obtain accurate measurements for Air Temperature, RH, Dew point, Wet bulb,

Wind Chill and Heat Index, keep hands and fingers away from the sensor area (8) at the bottom

of the meter.

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EN100‐150‐en‐US_v1.610/16

Light Measurement – Visible Light (EN100 only)

1. Select the Light Measurement function by pressing and holding the "HOLD" button until the

display indicates “Light” then release the HOLD button.

2. Press and hold the "REC" button until ‘Units’ appears. To switch between "Lux" or "Ft-cd"

press the Power button. Press REC to exit and return to the Light measurement mode; the

selected Unit (Lux or Ft-cd) will be displayed.

3. The Display will reverse and will show the light illuminance value in Lux or Ft-cd.

Light Measurement – UV Light (EN150 only)

1. Select the UVA Light Measurement function by pressing and holding the "HOLD" button until

the display indicates “U A” and then release the HOLD button.

2. The display will read the value of UVA light in either mW/cm² or uW/cm². The unit of measure

is not selectable here.

3. The Display will reverse and show the light illuminance value in mW/cm² or uW/cm².

4. To reverse the display, press the HOLD button for less than 1 second; ‘HOLD’ will appear on

the display, press the Power button and the display will be reversed. Repeat the procedure to

revert the display’s orientation.

Altitude Measurement

1. Select the Altitude Pressure function by pressing and holding the "HOLD" button until the

display indicates “HigH” then release the HOLD button.

2. Select the altitude units by pressing "REC" button unit the display shows ‘units’. Press the

Power button to change the units and then press “REC” button to save. Units are Ft (feet) and

m (meters).

3. The display will read the altitude.

Note: For an accurate Altitude measurement you can

Enter a known altitude.

Enter the Sea level barometric pressure setting.

a. Set the known value for altitude.

Power ON the meter and set it to read Altitude (HigH).

Set the Units of measure to Ft or m.

Press the HOLD button once, ‘hold’ will appear on the display. Press the REC

button, the display will show either Ft or m units.

Using the Power (up) or Hold (down) buttons, set the value to the known altitude.

Press the REC button to save the value.

b. Set the known Sea level barometric pressure (check a local Airport)

Select the Barometric Pressure function by pressing and holding the "HOLD" button

until the display indicates “bAr” and then release the HOLD button.

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EN100‐150‐en‐US_v1.610/16

Select the preferred pressure units by pressing "REC" button unit the display shows

units. Press the Power button to change the units to HPA and then press “REC”

button to save. (mBar = hPa)

Select the Altitude function by pressing and holding the "HOLD" button until the

display indicates “HigH” and then release the HOLD button.

Press the HOLD button once, ‘hold’ will appear on the display. Press the REC button

for more than 3 seconds, the display will show either hpa, mmHg or inHg units.

Using the Power (up) or Hold (down) buttons, set the value to the known sea level

barometric pressure. Press the REC button to save the value.

Barometric Pressure Measurement

1. Select the Barometric Pressure function by pressing and holding the "HOLD" button until the

display indicates “bAr” and then release the HOLD button.

2. Select the pressure units by pressing "REC" button unit the display shows ‘units’. Press the

Power button to change the units and then press “REC” button to save. The available units are

hPA, mmHg, and inHg.

3. The display will read the actual air pressure.

Note: Altitude and Air Pressure affect the actual Air pressure measurement.

4. To view the Sea level Barometric pressure, follow this procedure

a. Press the HOLD button once, ‘hold’ will appear on the display. Press the REC

button for more than 3 seconds, the display will show either Ft or m units.

b. Using the Power (up) or Hold (down) buttons, set the value to the known actual

altitude value. Press the REC button to show the Sea level pressure.

Note: After powering OFF and then ON, the pressure reading will read actual

barometric pressure.

Temperature Measurement (Optional RTD probe)

1. Plug the optional, (PT100) RTD probe into the "RTD Input Socket".

2. Select the External Temperature function by pressing and holding the "HOLD" button until the

display indicates “Pt” and then release the HOLD button.

3. Select the temperature units by pressing the "REC" button unit the display shows ‘units’. Press

the Power button to change the units and then press the “REC” button to save (°C or °F).

4. Touch the RTD probe to the surface under test.

5. The temperature value will display on the LCD display.

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