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...........................................................................................................................
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 Anemometer Vane........................................................................................................................
6
3-8 Humdity/Temp. sensor........................................................................................................
6
3-9 Tripod Fix Nut................................................................................................................
6
3-10 Battery Compartment / Cover........................................................................
6
3-11 Button operation label.....................................................................................
6
3-12 Type K probe socket.................................................................................................
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 Air flow 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. 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.
1

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

2-2 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
3

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
4

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
5

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
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 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 )
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
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
8