PCE Instruments PCE-EM 890 Bedienungsanleitung

PCE-EM 890 Environmental Tester

User Manual

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Last change: 12 January 2021

v1.0

English

Contents

1Safety notes........................................................................................... 1

2Specifications........................................................................................2

3Delivery scope.......................................................................................3

4System description............................................................................... 4

5Measurement functions........................................................................ 5

6Operation ............................................................................................... 5

6.1 Preparation ...................................................................................................................... 5

6.2 Functions ......................................................................................................................... 5

6.3 Measurement................................................................................................................... 7

7Contact............................................................................................... 10

8Disposal ...............................................................................................10

1 Safety notes

Please read this manual carefully and completely before you usethe device for the first time. The

device may only be used by qualified personnel and repaired by PCE Instruments personnel.

Damage or injuries caused by non-observance of the manual are excluded from our liability and

not covered by our warranty.

•The device must only be used as described inthis instructionmanual. If used otherwise,

this can cause dangerous situations for the user and damage to the meter.

•The instrument may only be used if the environmental conditions (temperature, relative

humidity, …) are within the ranges stated in the technical specifications. Do not expose

the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

•Do not expose the device to shocks or strong vibrations.

•The case should only be opened by qualified PCE Instruments personnel.

•Never use the instrument when your hands are wet.

•You must not make any technical changes to the device.

•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

•The device must only be used with accessories from PCE Instruments or equivalent.

•Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

•Do not use the instrument in explosive atmospheres.

•The measurement range as stated in the specifications must not be exceeded under

any circumstances.

•Non-observance of the safety notes can cause damage to the device and injuries to

the user.

We do not assume liability for printing errors or any other mistakes in this manual.

We expressly point to our general guarantee terms which can be found in our general terms of

business.

If you have any questions please contact PCE Instruments. The contact details can be found at

the end of this manual.

2 Specifications

Measuring function

Measurement

range

Resolution

Accuracy

Wind speed

80 ... 3937 ft/min

1 ft/min

±3 % of range

0.4 ... 20 m/s

0.1 m/s

1.4 ... 72 km/h

0.1 km/h

0.9 ... 44.7 mph

0.1 mph

0.8 ... 38.8 knots

0.1 knots

Air temperature

0 ... 50 °C

0.1 °C

±1.2 °C

Humidity

10 ... 95 % RH

0.1 % RH

<70 % RH: ±4 % RH

>70 % RH:

±4 % of rdg. + 1.2 % RH

Barometric air pressure

10 ... 999.9 hPa

0.1 hPa

±1.5 hPa

1000 ... 1100 hPa

1 hPa

±2 hPa

UV radiation

0 ....1999 µW/m²

0.1 µW/m²

±(4% of range + 2 digits)

290 ... 390 nm

2 ... 20 mW/m²

0.01 mW/m²

External temperature

(Pt1000 input)

-10 ... 70 °C

0.1 °C

±1.2 °C

Volume flow

0.024 ... 3600 cmm

0.001 cmm

0.01 cmm

0.1 cmm

1 cmm

Dew point

-25.3 ... 49 °C

0.1 °C

Wet bulb

temperature

-5.4 ... 49 °C

0.1 °C

Heat stress index

0 ... 100 °C

0.1 °C

±2 °C

Wind chill

-9.4 ... 44.2 °C

0.1 °C

±2 °C

Altitude above sea level

-2000 ... 9000 m

1 m

±15 m

General technical data of the climate/weather measuring device

Display

LC display 8 mm digit height

Measurement functions

Wind speed / temperature

Air humidity / temperature

Air pressure

Volume flow

Dew point

Wet bulb temperature

Wind chill

Heat stress index

Altitude above sea level

External temperature via Pt1000

Power supply

CR 2032 3 V battery

Power consumption

approx. 5 mA

Operating conditions

0 ... 50 °C / max. 80 % RH

Dimensions

120 x 45 x 20 mm

Weight

approx. 160 g

3 Delivery scope

1 x environmental tester PCE-EM 890

1 x CR2032 battery

1 x protective bag

1 x user manual

4 System description

①

Vane

⑦

REC key (recording)

②

LC display

⑧

Hand strap

③

Hold key (freeze display)

⑨

Pt1000 connection for external sensor

④

UV light sensor

⑩

Brief description of key function

⑤

Temperature / humidity sensor

⑪

Pressure sensor barometer

⑥

Power key (On)

⑫

Battery compartment

5 Measurement functions

Measuring function

Display text

Unit of measurement

Wind / air speed

m/s, km/h, mph, Knot, FPM

Temperature

°C, °F

Volume flow

AirFL

CMM, CFM

Wind chill

CHiLL

°C, °F

Humidity

% r. F.

Temperature

°C, °F

Dew point

°C, °F

Wet bulb temperature

_Et

°C, °F

Heat index

HEAt

°C, °F

UV radiation (UVA)

U A

mW/cm², µW/cm², automatic

Air pressure

bAr

hPa (HPA), mmHg (mH9), inHg (inH9)

Altitude above sea level

HigH

m, Ft

External temperature via Pt1000

°C, °F

The units of measurement in brackets are the display representations that differ from the unit of

measurement.

6 Operation

6.1 Preparation

Open the battery compartment on the back of the device by turning it slightly to the left and insert

the CR 2032 3 V battery, observing correct polarity. Close the battery compartment.

6.2 Functions

6.2.1 Switch meter on / off

•Press the "Power" key to switch on the meter.

•To switch off the meter, press and hold the "Power" key until it switches off.

6.2.2 Display backlight

•Press and release the "Power" key when the meter is switched on.

•The display backlight switches on for 5 seconds.

6.2.3 Select measuring function

•Press and hold the "Hold" key when the meter is switched on.

•The display shows the measuring functions one after the other.

•Release the key as soon as the desired measuring function is displayed.

6.2.4 Select unit of measurement

•When the meter is switched on, press and hold the "REC" key until the display shows

"Unit".

•Press the "Power" key repeatedly until the desired unit of measurement appears onthe

display.

•Confirm the selection with the "REC" key.

•If you have selected a measurement function with dual measurement, you can now

change the unit of measurement for the second measurement function as described

above.

6.2.5 Hold function

•Press and release the "Hold" key to freeze the current reading on the display.

•Press and release the "Hold" key again to return to normal measuring mode.

•The hold function is not available when the memory function is activated.

6.2.6 Rec. function

•Briefly press the "REC" key to save the maximum and minimum readings of the current

measurement.

•To call up the max value, press and release the "REC" key.

•To call up the min value, press and release the "REC" key again.

•To exit the Rec function and delete the saved values, press and hold the "REC" key for

more than 2 seconds.

6.2.7 Automatic power off

The tester powers off after approx. 10 minutes of inactivity to save battery power.

Automatic power off is not active in "REC" mode.

6.3 Measurement

6.3.1 Wind / air speed

•Switch on the tester and select the wind / air speed measurement function as described

above.

•Select the desired units of measurement as described above.

•Hold the meter in such a way that the vane is placed in wind direction.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.2 Volume flow

•Switch on the meter and select the volume flow measurement function as described

above.

•Select the desired unit of measurement as described above.

•Press the "Hold" key to set the opening cross-section.

•When the hold indicator is displayed, press and hold the "REC" key until "m-2" or "F-2"

appears at the bottom of the display.

•Use the "Hold" and "Power" keys to increase or decrease the cross-section value.

•Press the "REC" key to confirm the entry.

•Hold the meter in such a way that the vane is placed in front of the discharge opening

and read the value. To obtain a more accurate measurement result, measure at several

points of the discharge opening and calculate the average of the measured values.

6.3.3 Wind chill

•Switch on the tester and select the wind chill measurement function as described

above.

•Select the desired unit of measurement as described above.

•Hold the meter in such a way that the vane is placed in wind direction.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.4 Air humidity / temperature

•Switch on the tester and select the humidity / temperature measuring function as

described above.

•Select the desired units of measurement as described above.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.5 Dew point

•Switch on the meter and select the dew point measurement function as described

above.

•Select the desired unit of measurement as described above.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.6 Wet bulb temperature

•Power on the meter and select the wet bulb temperature measurement function as

described above.

•Select the desired unit of measurement as described above.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.7 Heat index

•Power on the meter and select the heat index measurement function as described

above.

•Select the desired unit of measurement as described above.

•Do not cover or enclose the openings of the temperature / humidity sensor. This will

lead to incorrect measurement results.

6.3.8 UV radiation

•Power on the meter and select the UV radiation measurement function as described

above.

•Do not cover or enclose the openings of the UV light sensor. This will lead to incorrect

measurement results.

•The changeover from µW/cm² to mW/cm² is automatic.

6.3.9 Air pressure

•Power on the meter and select the air pressure measuring function as described above.

•Select the desired unit of measurement as described above.

•Do not cover or enclose the opening of the pressure sensor on the back of the unit.

This will lead to incorrect measurement results.

Attention!

The actual air pressure depends on the weather-related atmospheric air pressure and the altitude

above sea level. The unit is set to sea level when delivered. To adjust the altitude above sea level

to your location, proceed as follows:

•With the air pressure measuring function selected, press the "Hold" key.

•When the hold indicator is displayed, press and hold the "REC" key until "m" or "F"

appears at the bottom of the display.

•With the "Hold" and "Power" keys, you can increase or decrease the site altitude above

sea level.

•Press the "REC" key to confirm the entry.

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