Lutron Electronics EM-1910 Manuel utilisateur
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..................................................................................................................
1
2. SPECIFICATIONS......................................................................................................
2
3. FRONT PANEL DESCRIPTION......................................................................
6
3-1 Hold button.....................................................................................................................
6
3-2 button ( Power button )............................................................................................
6
3-3 REC button......................................................................................................................
6
3-4 LCD display.......................................................................................................................
6
3-5 Wristlet............................................................................................................................
6
3-6 Light Sensor.............................................................................................................................
6
3-7 Sound level meter sensor ( Mic )............................................................................................................
6
3-8 Humidity/Temp. sensor.........................................................................................................
6
3-9 RS-232 socket..............................................................................................................
6
3-10 Battery Compartment / Cover..........................................................................................
6
3-11 Button operation label.......................................................................................................
6
3-12 Type K probe socket...............................................................................................
6
3-13 Tripod Fix Nut...............................................................................................
6
4. MEASURING PROCEDURES......................................................................................................
7
4-1 Power on/off....................................................................................................................
7
4-2 LCD backlight on/off.........................................................................................................
7
4-3 Function selection............................................................................................................
7
4-4 Unit selection....................................................................................................................
8
4-5 Reverse the Display direction automatically...................................................................................
9
4-6 Special attention for the Humidity measurement................................................................................
10
4-7 Sound level measurement.........................................................................................................................
10
4-8 Hold Function.......................................................................................................
11
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.
1
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
2-2 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).
3
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
4
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℉ ).
5
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
6
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 )
7
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
8
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