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

2) If the Display with two units, such as anemometer with two Display, upper
Display show the air velocity value, lower Display show the Temp. value.
After finish the upper Display unit selection ( already press the " REC
buton " to enter ) then can select the lower Display unit ( ℃,℉ ) following
by pressing the " button " once. After finish the lower Display unit
selection, then press the " REC button " to save the lower Display unit
with default.
The selection unit for all function are :
Measurement Unit
Air velocity M/S, Km/h, mph, knot, FPM
Temp. ( Air velocity ) ℃, ℉
Air flow CMM, CFM
Wind chill ℃, ℉
Temp. ( Humidity ) ℃, ℉
Dew point ℃, ℉
Wet bulb Temp. ℃, ℉
Heat index ℃, ℉
Light meter Lux, Ft-cd * auto range
Type K Temp. ℃, ℉
4-5 Reverse the Display direction automatically
As intend to match the sensor convenient position, Light sensor should
put on the top case side to prevent when hand hold the case may
interrupt the sensor, the Display direction for Light measurement
will reverse automatically.
9

4-6 Special attention for the Humidity
measurement
Attention :
Intend to get the precision
reading, for the Humidity /
Temp. , Dew point Temp., Wet
bulb Temp., Heat index
measurement, the hand or
fingers do not touch ( or stay
away ) the Humidity sensor
( 3-8, Fig. 1 ).
4-7 Air flow measurement
1) Power on, select the function to " Air flow measurement "
( refer to chapter 4-3 ), now the meter is ready for Air flow measurement.
2) Set the measurement area dimension :
Press the " Hold button " once, the Display will show the indicator
" HOLD " then press the " REC button " continuously until the left down
bottom of Display show " m-2 " or " F-2 "
m-2 = meter square
F-2 = ft square
3) Use the " Hold button " and the " button " to adjust the air flow
dimension value. Until the desired dimension value is set, press
" REC button " to save the setting value with default.
button = ▲ button
Hold button = ▼ button
REC button = Enter button
10

4- 8 Hold Function
Whenever press the " Hold Button " will freeze the current reading
value with a "HOLD" symbol on the display.To release the Hold function,
just press the" Hold button "once again, the " HOLD " indicator will
be disappeared.
* During execute the " REC function ", the Hold function is disable.
4-9 REC ( Record ) function
1) The REC ( Record ) function can record and display the maximum and
minimum reading values. Start the Record function by pressing the
" REC Button " once. There will be a " REC " symbol on the display.
2) With the REC symbol on the display :
(a) Press the " REC button " once and the " Max " symbol along
with the maximum value will appear on the display.
(b) Press the " REC button " again, the " MIN " symbol along with the
minimum value will appear on the display.
(c) To exit the memory record function, press the " REC button " continuously
for at least 2 seconds. The display will revert to the current reading.
(d) Clear the recorded MAX or MIN value by pressing the " Hold button " once.
Previous recorded MAX/MIN value will be given up and then revert to the
REC. function keep on recording.
4- 10 Auto power off disable
In order to prolong the battery life, the instrument has "Auto Power Off "
function. The meter will switch off automatically if no buttons are
pressed for around 10 minutes.
However if intend disable the " Auto power off " function, just execute
the " REC " function ( above chapter 4-9 ), then the Auto power off
function will be canceled.
4-11 Type k Temp. measurement
1) Insert the plug of the optional Type K Temp. probe, TP-01 into the
" Type K probe socket " ( 3-12, Fig. 1 ).
2) Power on the meter, select the function to " Type K Temp. "
( refer to chapter 4-3 ), now the meter is ready for Type K Temp.
measurement.
11

5. BATTERY REPLACEMENT
1)
When the LCD display shows " " symbol, it is necessary to replace
the battery. However measurement may still be made for several hours after
the low battery indicator appears.
2) Open the " Battery Compartment / Cover " ( 3-10, Fig. 1 ) and remove
the battery.
3)
Install the battery ( UM4-AAA DC1.5 V x 3 ) and then reinstate the cover.
6. Optional Type K Temp. probe
(Type K) TP-01 * Max. short-tern operating
Temperature: 300 ℃ (572 ℉).
* It is an ultra fast response
naked-bead thermocouple
suitable for many general purpose
application.
Thermocouple * Measure Range: -50 ℃ to 900 ℃,
Probe -58 ℉ to 1650 ℉.
(Type K), TP-02A * Dimension:12cm tube, 3.2mm Dia.
Thermocouple * Measure Range: -50 ℃ to 1100 ℃,
Probe -58 ℉ to 2012 ℉.
(Type K), TP-03
* Dimension: 13.6cm tube, 8mm Dia.
Surface Probe * Measure Range: -50 ℃ to 400 ℃,
(Type K), TP-04 -58 ℉ to 752 ℉.
* Size :
Temp. sensing head - 15 mm Dia.
Probe length - 120 mm.
12 200212-EM1900