Lutron Electronics EM-1900 User manual

+ Light 9 in 1

ENVIRONMENT METER

Model : EM-1900

Your purchase of this

ENVIRONMENT METER

9 in 1 marks a

step forward for you

into the field of

precision measurement.

Although this Meter is a

complex and delicate

instrument, its durable

structure will allow

many years of use if

proper operating

techniques are

developed. Please read

the following

instructions carefully

and always keep this

manual within easy

reach.

OPERATION MANUAL

TABLE OF CONTENTS

1. FEATURES...........................................................................................................................

2. SPECIFICATIONS................................................................................................................

3. FRONT PANEL DESCRIPTION................................................................................

3-1 Hold button.................................................................................................................................

3-2 button ( Power button )..............................................................................................

3-3 REC button..................................................................................................................................

3-4 LCD display...................................................................................................................................

3-5 Wristlet........................................................................................................................................

3-6 Light Sensor.......................................................................................................

3-7 Anemometer Vane........................................................................................................................

3-8 Humdity/Temp. sensor........................................................................................................

3-9 Tripod Fix Nut................................................................................................................

3-10 Battery Compartment / Cover........................................................................

3-11 Button operation label.....................................................................................

3-12 Type K probe socket.................................................................................................

4. MEASURING PROCEDURES....................................................................................

4-1 Power on/off...................................................................................................................................

4-2 LCD backlight on/off........................................................................................................................

4-3 Function selection...........................................................................................................................

4-4 Unit selection...................................................................................................................................

4-5 Reverse the Display direction automatically....................................................................

4-6 Special attention for the Humidity measurement..............................................................

4-7 Air flow measurement.......................................................................................................

4-8 Hold Function................................................................................................................

4-9 REC ( Record ) function..................................................................................................................

4-10 Auto power off disable..............................................................................................

4-11 Type K Temp. measuremen................................................................................

5. BATTERY REPLACEMENT......................................................................................

6. Optional Type K Temp. Probe......................................................................................

1. FEATURES

* 9 in 1 professional environment instruments:

1. Air velocty/Temp., 2. Humidity/Temp., 3. Light meter

4. Air flow, 5. Dew point, 6. Wet bulb,

7. Wind chill, 8. Heat index, 9. Type K Temp.(optional probe)

* Tiny bone shape with light weight 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.

* High precision humidity sensor with fast response time.

* Build in baro sensor for the atomsphere value

and altitude measurement precisely.

* Built- in microprocessor circuit assures excellent

performance and accuracy.

* Concise and compact buttons arrangement,

easy operation.

* Memorize the maximum and minimum value with recall.

* ℃/℉ detection by pressing button on the front panel.

* Hold function to freeze the current reading value.

2. SPECIFICATIONS

2-1 General Specifications

Display 35 mm x 30 mm LCD display

Measurement 1. Air velocty/Temp.

2. Humidity/Temp.

3. Light meter

4. Air flow

5. Dew point

6. Wet bulb

7. Wind chill

8. Heat index

9. Type k Temp.( optional )

Operating Max. 80% RH.

Humidity

Operating 0 to 50 ℃ ( 32 to 122 ℉ )

Temperature

Over Input Indication of "- - - - "

Display

Power Supply UM4-AAA X 3 ( DC 4.5 V battery )

Power Approx. DC 5 mA

Consumption

Weight 130g (w/o battery )

Dimension HWD 120 x 45 x 20 mm (4.7 x 1.8 x 1.2 inch).

Standard Instruction Manual

Accessory

Optional Type K Temp. probe : TP-01 , TP-02A ,TP-03 , TP-04

Accessories

2-2 Electrical Specification ( 23 ±5℃ )

Air velocity

Unit Range Resolution Accuracy

ft/min 80 to 3937 ft/min 1 ft/min

m/s 0.4 to 20.0 m/s 0.1 m/s ≦ 20 m/s : ±3% F.S.

km/h 1.4 to 72.0 km/h 0.1 km/h Max. : 25 m/s

MPH 0.9 to 44.7 mile/h 0.1 MPH

knots 0.8 to 38.8 knots 0.1 knots

Temp. 0 to 50 ℃ 0.1 ℃

32 to 122 ℉ 0.1 ℉

Remark :

ft/min : feet per minute MPH : miles per hour

m/s : meters per second knots : nautical miles per hour

km/h : kilometers per hour

Humidity/Temp.

Unit Range Resolution Accuracy

% RH 10 to 95 %RH 0.1 %RH < 70% RH :

±4 %RH

≧

70% RH :

±( 4 % rearding +1.2 %RH)

Temp. 0 to 50 ℃ 0.1 ℃ ±1.2 ℃

32 to 122 ℉ 0.1 ℉ ±2.5 ℉

Light * auto range

Unit Range Resolution Accuracy

Lux 0 to 2,200 Lux 1 Lux ±5% readding ±8 dgt

1,800 to 20,000 Lux 10 Lux

Ft-cd 0 to 204.0 Fc 0.1 Ft-cd

170 to 1,860 Fc 1 Ft-cd

Remark : Ft-cd : feet candle

Ar flow

Unit Range Resolution

CMM 0.024 to 36000 0.001/0.01/0.1/1

CFM 0.847 to 1271300 0.001/0.01/0.1/1/10 (x10)/100 (x100)

Dew point Temp.

Unit Range Resolution Remark

℃ -25.3 to 49.0 ℃ 0.1 ℃ * Calculate from the

℉ -13.5 to 120.0 ℉ 0.1 ℉ humidity/Temp. value

Please refer to http://en.wikipedia.org/wiki/Dew_point

Wet bulb Temp.

Unit Range Resolution Remark

℃ -5.4 to 49.0 ℃ 0.1 ℃ * Calculate from the

℉ 22.2 to 120 ℉ 0.1 ℉ humidity/Temp. value

Please refer to http://en.wikipedia.org/wiki/Wet-bulb_temperature

Heat index

Unit Range Resolution Accuracy

℃ 0 to 100.0 ℃ 0.1 ℃ ±2.0 ℃

℉ 32 to 212 ℉ 0.1 ℉ ±3.6 ℉

Pleas refer to http://en.wikipedia.org/wiki/Heat_index

Type K thermometer

Sensor Resolution Range Accuracy

Type

Type K 0.1 ℃-50.0 to 1300.0 ℃± ( 0.4 % reading + 0.5 ℃ )

-50.1 to -100.0 ℃± ( 0.4 % reading+ 1 ℃ )

0.1 ℉-58.0 to 2372.0 ℉± ( 0.4 % reading+ 1 ℉ )

-58.1 to -148.0 ℉± ( 0.4 % reading+ 1.8 ℉ )

Effects of the heat index (shade values)

Celsius Fahrenheit Notes

27–32 ℃ 80–90 ℉ Caution :

Fatigue is possible with prolonged exposure

and activity. Continuing activity could result in

heat cramps

32–41 ℃ 90–105 ℉ Extreme caution :

Heat cramps, and heat exhaustion are possible.

Continuing activity could result in heat stroke

41–54 ℃ 105–130 ℉ Danger :

Heat cramps, and heat exhaustion are likely ;

heat stroke is probable with continued activity

over 54 ℃ over 130 ℉ Extreme danger : Heat stroke is imminent

Note :

Exposure to full sunshine can increase heat index values by up to

8 ℃ ( 14℉ ).

Wind chill

Unit Range Resolution Accuracy

℃ -9.4 to 44.2 ℃ 0.1 ℃ ±2.0 ℃

℉ 15.0 to 112.0 ℉ 0.1 ℉ ±3.6 ℉

* Wind chill value is effect only when the Temp. value < 15 ℃ and

Air velocity value > 1.4 m/s.

* Please refer to http://en.wikipedia.org/wiki/Wind_chill

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Hold button

3-2 Button ( Power button )

3-3 REC batton

3-4 LCD display

3-5 Wristlet

3-6 Light Sensor

3-7 Anemometer Vane

3-8 Humdity/Temp. sensor

3-9 Tripod Fix Nut

3-10 Battery Compartment / Cover

3-11 Battery Cover Screws

3-12 Type K probe socket

4. MEASURING PROCEDURE

4-1 Power on/off

Button = Power Button

1) Power on :

Press " Power Button " once.

2) Power off :

During power on, press " Power Button " > 3 seconds.

will power off.

4-2 LCD backlight on/off

During power on, press " Power Button " once, then the

LCD backlight will be on 5 seconds then off automatically,

4-3 Function selection

The meter can select 9 kind function as :

a. Anemometer ( Air velocity/Temp. )

b. Air flow ( CMM, CFM )

c. Wind chill

d. Humidity/Temp.

e. Dew point Temp.

f. Wet bulb Temp.

g. Heat index

h. Light meter

i. Type K Temp.( optional )

During power on, press the " Hold button " continuously ( not release the

button ), the Display will show the following text in sequence :

Display Function

text

An Anemometer ( Air velocity/Temp. )

AirFL Air flow ( CMM, CFM )

CHiLL Wind chill

rH Humidity/Temp.

dP Dew point

_Et Wet bulb Temp.

HEAt Heat index

LigHt Light meter

tYPE tYpE K Temp.( optional )

Until the Display show the desired function, just release the " Hold button " ,

the meter will execute this function with default.

4-4 Unit selecttion

1) During power on, press the " REC button " continuously > 3 seconds,

the Display will show the text " Unit " release the " REC button ", then press "

button " is sleeted, press the " REC button " to save the unit

with default.

REC button = Enter button

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