Lutron Electronics EM-1910 User manual

Sound level, 7 in 1

ENVIRONMENT METER

Model : EM-1910

Your purchase of this

ENVIRONMENT METER.

7 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 Sound level meter sensor ( Mic )............................................................................................................

3-8 Humidity/Temp. sensor.........................................................................................................

3-9 RS-232 socket..............................................................................................................

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

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

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

3-13 Tripod Fix Nut...............................................................................................

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 Sound level measurement.........................................................................................................................

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

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

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

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

5. RS232 PC SERIAL INTERFACE........................................................................................................

6. BATTERY REPLACEMENT........................................................................................................

7. Optional Type K Temp. Probe......................................................................................................

1. FEATURES

* 7 in 1 professional environment instruments:

1. Sound level meter., 2. Humidity/Temp., 3. Light meter

4. Dew point, 5. Wet bulb,

6. Heat index, 7. 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.

* High precision humidity sensor with fast response time.

* 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 14 mm LCD display

Measurement 1. Sound level meter.

2. Humidity/Temp.

3. Dew point

4. Wet bulb

5. Heat index

6. Light meter

7. 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 18 mA

Consumption

Weight 146 g (w/o Battery)

Dimension HWD 179 x 57 x 24 mm (7.0 x 2.2 x 0.94 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℃ )

Sound level meter.

Measurement 35 - 130 dB.

Range

Resolution 0.1 dB.

Function Data hold

Record ( Max., Min. ).

Accuracy Characteristics of "A" frequency weighting network

(23 ±5 ℃) meet IEC 61672-2013 class 2 Under 94 dB input

signal, the accuracy are :

31.5 Hz ±3.0 dB

63 Hz ±2.0 dB

125 Hz ±1.5 dB

250 Hz ±1.5 dB

500 Hz ±1.5 dB

1 K Hz ±1.0 dB

2 K Hz ±2.0 dB

4 K Hz ±3.0 dB

8 K Hz ±5.0 dB

Remark :

The above spec. are tested under the

environment RF Field Strength less

than 3 V/M & frequency less than 30

MHz only.

Frequency 31.5 to 8,000 Hz.

Microphone type Electric condenser microphone.

Microphone size Out size, 12.7 mm DIA. ( 1/2 inch).

Humidity/Temp.

Unit Range Resolution Accuracy

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

±4 %RH

≧

70% RH :

±( 4 %rdg +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% rdg ±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

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/J thermometer

Sensor Resolution Range Accuracy

Type

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

-50.1 to -100.0 ℃± ( 0.4 % + 1 ℃ )

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

-58.1 to -148.0 ℉± ( 0.4 % + 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℉ ).

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Hold button

3-2 Button ( Power button )

3-3 REC Button

3-4 LCD display

3-5 Wristlet

3-6 Lux Light Sensor

3-7 Sound level sensor ( mic )

3-8 Humidity/Temp. sensor

3-9 RS-232 socket

3-10 Battery Compartment / Cover

3-11 Battery Cover Screws

3-12 Type K probe socket

3-13 Tripod Fix Nut

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 7 kind function as :

a. Sound level meter

b. Humidity/Temp.

c. Dew point Temp.

d. Wet bulb Temp.

e. Heat index

f. Light meter

g. 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

db Sound level meter

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 selection

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 "

to select the desired unit, after the desired unit

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

with default.

REC button = Enter button

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