Lutron Electronics AM-4234SD User manual

SD card real time Data Recorder
+ Type K/J thermometer, Air flow
HOT WIRE ANEMOMETER
HUMIDITY/Temp.
Model : AM-4234SD
Your purchase of this HOT WIRE ANEMOMETER,HUMIDITY/Temp. meter
with SD CARD DATA RECORDER marks a step forward for you into
the field of precision measurement. Although this METER is a complex
and delicate instrument, its durable structure 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...............................................................................................
8
4. MEASURING PROCEDURE........................................................................................................
10
4-1 Function selection ..........................................................................................................
10
4-2 Air velocity/Temp. measurement..................................................................................
11
4-3 Air flow measurement.......................................................................................
13
4-4 Humidity and Temperature measurement..........................................................
14
4-5 Dew point ( Humidity ) measurement.................................................................
14
4-6 Wet bulb ( Humidity ) measurement............................................................
14
4-7 Type K/J thermometer .........................................................................................
15
4-8 Data Hold.................................................................................................................
15
4-9 Data Record ( Max., Min. reading ).........................................................................
15
4-10 LCD Backlight ON/OFF.......................................................................................
16
5. DATALOGGER..................................................................................................................
17
5-1 Preparation before execute datalogger function...........................................
17
5-2 Auto Datalogger ( Set sampling time ≧ 1 second )…
……………………………………….
17
5-3 Manual Datalogger ( Set sampling time = 0 second )…………………………………………..
19
5-4 Check time information......................................................................................................
19
5-5 SD Card Data structure.....................................................................................................
20
6. Saving data from the SD card to the computer....................................................................................
21
7. ADVANCED SETTING.............................................................................................................
23
7-1 Set clock time ( Year/Month/Date, Hour/Minute/Second ) ……………………………………
23
7-2 Set sampling time ............................................................................................................
24
7-3 Auto power OFF management .................................................................................
24
7-4 Set beep Sound ON/OFF..............................................................................................
25
7-5 Decimal point of SD card setting.................................................................................
25
7-6 SD memory card format.........................................................................................
26
7-7 Select the temperature unit to ℃ or ℉ ...............
......................................................
26
7-8 Select the thermometer type to Type K or Type J………………………………………..
27
7-9 Set air flow type ( CFM/USA, CMM/EURO )......................................................
27
7-10 Set air flow area dimension.................................................................................
28
8. POWER SUPPLY from DC ADAPTER.........................................................................
29
9. BATTERY REPLACEMENT.........................................................................................
29
10. SYSTEM RESET.............................................................................................................
30
11. RS232 PC serial interface..................................................................................................
30
12. Optional Type K Temp. probe.......................................................................................
32
13. PATENT............................................................................................................................
32

1. FEATURES
* One meter can accept two probes :
Hot wire anemometer probe and Humidity/Temp. probe
* Combination of hot wire and standard thermistor,
deliver rapid and precise measurements even at low
air velocity value.
* Slim hot wire probe, ideal for grilles & diffusers.
* Air velocity : m/s, Ft/min, Km/h, Knot, Mile/h,
* Air flow ( CFM, CMM ) measurement.
* Air temperature ( ℃ , ℉ )
* Air Temp. used thermistor sensor, fast response time.
* Fast humidity measuring response time.
* Humidity/Temp., Dew point Temp., Wet bulb Temp.
* Type K, Type J thermocouple thermometer.
* Real time SD memory card Datalogger, it Built-in Clock
and Calendar, real time data recorder , sampling time set
from 1 second to 3600 seconds.
* Manual datalogger is available ( set the sampling
time to 0 ), during execute the manual datalogger
function, it can set the different position ( location ) No.
( position 1 to position 99 ).
* Innovation and easy operation, computer is not need
to setup extra software, after execute datalogger, just
take away the SD card from the meter and plug in the
SD card into the computer, it can down load the all the
measured value with the time information (
year/month/date/ hour/minute/second ) to the Excel
directly, then user can make the further data or graphic
analysis by themselves.
* SD card capacity : 1 GB to 16 GB.
* LCD with green light backlight, easy reading.
* Can default auto power off or manual power off.
* Data hold, record max. and min. reading.
* Microcomputer circuit, high accuracy.
1

* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
* RS232/USB PC COMPUTER interface.
* Separate probe, easy for operation.
* Applications : Environmental testing, HVAC, Air conveyors,
Flow hoods, Clean rooms, Air velocity, Air balancing,
Fans/motors/blowers, Furnace velocity, Refrigerated case,
Paint spray booths, Humidity/Dew points Temp.
measurements.
2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 52 mm x 38 mm
LCD with green backlight ( ON/OFF ).
Measurement Air velocity:
Unit m/s (meters per second)
Km/h ( kilometers per hour )
Ft/min ( FPM, feet per minute )
Knots ( nautical miles per hour )
Mile/h ( mph, miles per hour )
Air flow :
CFM, CMM
* CFM : cube feet per minute
* CFM : cube meters per minute
Humidity/Temp. : %RH/ ℃ or ℉ .
Dew point ( Humidity ) : ℃ or ℉ .
Wet bulb ( Humidity ) : ℃ or ℉ .
Type K/ Type J thermometer : ℃ , ℉
Air temperature: ℃ , ℉
2

Sensor Air velocity & Air flow :
Structure Tiny glass bead thermistor.
Air temperature :
Thermistor.
Humidity :
Precision capacitance sensor.
Type K, Type J thermometer :
Type K/J thermocouple probe.
* Probes are optional.
Datalogger Auto 1 second to 3600 seconds
Sampling Time @ Sampling time can set to 1 second,
Setting range but memory data may loss.
Manual Push the data logger button
once will save data one time.
@ Set the sampling time to
0 second.
@ Manual mode, can also select the
1 to 99 position ( Location ) no.
Data error no. ≦ 0.1 % no. Of total saved data typically.
Memory Card SD memory card. 1 GB to 16 GB.
* It recommend use memory card ≦ 4 GB.
Advanced * Set clock time ( Year/Month/Date,
setting Hour/Minute/ Second )
* Set sampling time
* Auto power OFF management
* Set beep Sound ON/OFF
* Decimal point of SD card setting
* SD memory card Format
* Set thermometer type to Type K or Type J
* Set temperature unit to ℃ or ℉
* Set air flow type ( CFM/USA, CMM/EURO )
* Set air flow area dimension
Temperature Automatic temp. compensation for the
Compensation Anemometer function and the type K/J
thermometer.
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
3

Sampling Time Approx. 1 second.
of Display
Data Output RS 232/USB PC computer interface.
* Connect the optional RS232 cable
UPCB-02 will get the RS232 plug.
* Connect the optional USB cable
USB-01 will get the USB plug.
Operating 0 to 50 ℃ .
Temperature
Operating Less than 85% R.H.
Humidity
Power Supply * AC/DC power adapter is optional.
( UM3, AA ) x 6 PCs, or equivalent.
* AC/DC power adapter is optional.
adapter is optional ).
Power Current Normal operation ( w/o SD card save
data and LCD Backlight is OFF) :
Approx. DC 60 mA.
When SD card save the data and LCD
Backlight is OFF) :
Approx. DC 70 mA.
Weight
347 g/ 0.76 LB.
* Meter only
Dimension Main instrument :
182 x 73 x 47.5 mm
( 7.1 x 2.9 x 1.9 inch )
Hot wire telescope probe :
Round, 12 mm Dia x 250 mm ( min. length ).
Round, 12 mm Dia x 960 mm ( max. length ).
Humidity Probe :
197 mm ( 7.8 inch ) in length.
Accessories *
Instruction manual.......................................
1 PC
Included *
Hot wire telescope probe................................
1 PC
*
Humidity/Temp. probe.....................
1 PC
*
Hard carrying case(CA-06) ..............
1 PC
4

Optional * SD Card ( 2 G )
Accessories * Type K thermocouple probes,
refer to page 31.
* AC to DC 9V adapter.
* USB cable, USB-01.
* RS232 cable, UPCB-02.
* Data Acquisition software, SW-U801-WIN.
* Excel Data Acquisition software, SW-E802
2-2 Electrical Specifications (23±5 ℃
℃℃
℃ )
Air velocity
Measurement Range Resolution Accuracy
m/s 0.2 to 5.00 m/s 0.01 m/s ±( 5% + a )
5.1 to 35.0 m/s 0.1 m/s reading
Km/h 0.70 to 18.00 km/h 0.01 Km/h
18.0 to 126.0 km/h 0.1 Km/h or
Mile/h 0.50 to 11.20 mph 0.01 mph ±( 1% + a )
( mph ) 11.2 to 78.2 mph 0.1 mph full scale
Knot 0.40 to 9.70 knot 0.01 Knot
9.7 to 68.0 knot 0.1 Knot
Ft/min 40-6889 ft/min 1 Ft/min
@ a = 0.1 m/s, 0.3 km/h, 0.2 mile/h, 0.2 knot, 20 ft/min
Note:
m/s - meters per second km/h - kilometers per hour
ft/min - feet per minute knot - nautical miles per hour
mile/h - miles per hour (international knot)
Air temperature
Measuring Range 0 ℃ to 50 ℃ /32 ℉ to 122 ℉
Resolution 0.1 ℃ /0.1 ℉
Accuracy ± 0.8 ℃ /1.5 ℉
5

Air flow
Measurement Range Resolution
CMM ( m^3/min. ) 0 to 54,000 CMM 0.001 to 1 CMM
CFM ( ft^3/min. ) 0 to 1,907,000 CFM 0.001 to 100 CFM
Measurement Area
CMM ( m^3/min. ) 0.001 to 30.000 m^2
CFM ( ft^3/min. ) 0.01 to 322.93 ft^2
Humidity/ Temperature
Range 5 % to 95 % R.H.
Humidity Resolution 0.1 % R.H.
Accuracy ≧ 70% RH :
±(3% reading + 1% RH).
< 70% RH :
±3% RH.
Range 0 ℃ to 50 ℃ ,32 ℉ to 122 ℉ .
Temperature Resolution 0.1 degree
Accuracy ℃ ±0.8 ℃ .
℉ ±1.5 ℉ .
Dew Point ( Humidity )
℃ Range -25.3 ℃ to 48.9 ℃
Resolution 0.1 ℃
℉ Range -13.5 ℉ to 120.1 ℉ .
Resolution 0.1 ℉ .
Remark :
* Dew Point display value is calculated from the
Humidity/Temp. measurement automatically.
* The Dew Point accuracy is sum accuracy value of
Humidity & Temperature measurement..
6

Wet bulb ( Humidity )
℃ Range -21.6 ℃ to 50.0 ℃
Resolution 0.1 ℃
℉ Range -6.9 ℉ to 122.0 ℉ .
Resolution 0.1 ℉ .
Remark :
* Wet bulb display value is calculated from the
Humidity/Temp. measurement automatically.
* The Welt bulb accuracy is sum accuracy value of
Humidity & Temperature measurement..
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 ℉ )
Type J 0.1 ℃ -50.0 to 1200.0 ℃ ± ( 0.4 % + 0.5 ℃ )
-50.1 to -100.0 ℃ ± ( 0.4 % + 1 ℃ )
0.1 ℉ -58.0 to 2192.0 ℉ ± ( 0.4 % + 1 ℉ )
-58.1 to -148.0 ℉ ± ( 0.4 % + 1.8 ℉ )
@ Above specification tests under the environment RF Field Strength
less than 3 V/M & frequency less than 30 MHz only.
7

3. FRONT PANEL DESCRIPTION
Fig.1
8

3-1 Display
3-2 Power Button ( Backlight Button )
3-3 Hold Button
3-4 REC Button
3-5 UNIT Button ( ▲ Button )
3-6 SET Button ( Time Button )
3-7 FUNCTION Button ( ▼ Button )
3-8 LOG Button ( ENTER Button )
3-9 Probe input socket ( Hot wire probe )
3-10 Type K/J thermometer socket
3-11 SD card socket
3-12 RS-232 Output Terminal
3-13 Reset Button
3-14 DC 9V Power Adapter Input Socket
3-15 Battery Compartment/Cover
3-16 Battery Cover Screws
3-17 Stand
3-18 Tripod Fix Nut
3-19 Probe Plug ( Hot wire probe )
3-20 Telescope Probe ( Hot wire probe )
3-21 Sensing Head ( Hot wire probe )
3-22 Probe Plug ( Humidity/Temp. )
3-23 Probe Handle ( Humidity/Temp. )
3-24 Probe head ( Humidity & Temp. )
3-25 Probe input socket.( Humidity/Temp. )
9

4. MEASURING PROCEDURE
4-1 Function selection
1) Power on the meter by pressing the " Power button "
( 3-2, Fig. 1 ) > 1.5 seconds continuously.
* After already power on the meter, pressing the
" Power button " > 1.5 seconds continuously will
turn off the meter.
2) The meter can select 6 kind function as :
1. Air velocity/Temp.
2. Air flow ( CFM/USA type, CMM/Euro type )
3. Type K/J Thermometer
4.
Humidity/Temp. measurement
5.
Dew point ( Humidity )
6.
Wet bulb Temp. ( Humidity )
Pressing the " Function Button " ( 3-7, Fig. 1 )
continuously ( not release the button ), the Display
will show the following text in sequence :
Air
Air velocity/Temp. measurement
AirF
Air flow measurement
tP
Type K/J Thermometer measurement
rH
Humidity/Temp. measurement
dP
Dew point ( Humidity ) measurement
_Et
Wet bulb Temp. ( Humidity )
measurement
Until the Display show the desired mode ( Function ),
just release the " Function Button " ( 3-7, Fig. 1 ), the
meter will execute this function with default.
10

4-2 Air velocity/Temp. measurement
1)
Important information of using the Telescope Probe
*
When the probe is not used, the " Sensor cover "
should slide to the up position.
When the probe is not used, the
" Sensor cover " should slide to the
up position.
Fig. 2
Probe Handle
*
When begin to use the probe,
a. Slide the sensor cover to the down position, let the
air velocity sensor to contact the air, refer Fig. 3.
b. Extent the telescope probe to the convenient length
,refer to Fig. 3
air velocity sensor
( do not touch by
fingers or tools )
" Sensor cover "
slide to the low
position when
make the
measurement
Fig. 3 Probe Handle
11

*
Do not use the fingers or any tools to touch the air
velocity sensor, otherwise the meter may happen
the permanent damage without warranty.
*
Direction of the sensor head :
There is a mark on the top of the " Sensor Head ",
When make the measurement, then this mark should
against the measured wind, refer Fig. 4.
When sensor head face against the measurement air,
then the upper display will show the air velocity value.
The lower display will show the temperature value.
Direction mark should face
the measured wind.
sensor head ( side view )
Fig. 4
Probe Handle
2) Function select to " Air velocity/Temp. " measurement.
3)..
Plug the " Probe Plug " ( 3-19, Fig. 1 ) into the " Probe
Input Socket " ( 3-9, Fig. 1 ).
Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ) > 1.5 seconds continuously.
4) Hold the " Telescope Probe " ( 3-20, Fig. 1 ) by hand and
let the " Sensing Head " ( 3-21, Fig. 1 ) face against the
measuring air flow source, then the Display ( 3-1, Fig. 1 )
will show air velocity directly. At the same time, the
lower Display will show the air temperature value.
12

Measuring Consideration :
The mark on the sensor head indicates the
direction that " need to face against the air
flow.
Change the Air velocity unit
Air velocity unit are :
m/s, Km/h, mph ( Mile/h ), Knots, FPM ( Ft/min )
If intend to change the Air velocity unit, press the
Unit Button " ( 3-5, Fig. 1 ) > 1.5 seconds, the unit will
change from m/s to Km/h, mph, Knot, FPM in
sequence, until the desired unit is present on the
Display release the " Unit Button ", the
select unit will save into the memory with default.
Change the temperature unit ( ℃
℃℃
℃ , ℉
℉℉
℉ )
The meter Temp. display unit is defaulted to " ℃ ".
If intend to let the meter's temperature unit default
to " ℉ " , then please refer chapter 7-7, page 26.
4-3 Air flow measurement.
a. Function select to " Air flow " , refer to page 10.
AirF/USA : Air flow in CFM unit
or
AirF/Euro : Air flow in CMM unit
Remark :
a. How to select the CFM air flow or CMM air flow,
details please reefer to Chapter 7-9, page 27.
b. Set air flow area dimension ( ft^2 or meter^2 )
at the first, details please refer to Chapter 7-10, page 27.
c. Other procedures same as " Air velocity/Temp.
measurement ", refer to page 11.
13

4-4 Humidity and Temperature measurement
a. Plug the " Probe Plug " ( 3-22, Fig. 1 ) into the " Probe
Input Socket " ( 3-25, Fig. 1 ).
b. Function select to " Humidity/Temp. " measurement.,
refer to page 10. The LCD shows the unit " %RH " and
" ℃ or ℉
" at the same time and measured value
##
will show on the display ( upper display is Humidity
value, the lower display is the temperature value ) .
Remark :
The meter Temp. display unit is defaulted to " ℃ ".
If intend to let the meter's temperature unit default
to " ℉ " , then please refer chapter 7-7, page 26.
4-5 Dew point ( Humidity ) measurement
a. Function select to " Dew point ( Humidity ) "
measurement, refer to page 10.
b..
Other procedures same as the " Humidity/Temp. "
measurement.
c. The upper LCD shows the Dew point value in the
unit of " ℃ or ℉ " , the lower display will show the
text " dP " .
4-6 Wet bulb ( Humidity ) measurement
a. Function select to " Wet bulb ( Humidity ) "
measurement, refer to page 10.
b..
Other procedures same as the " Humidity/Temp. "
measurement.
c. The upper LCD shows the Wet bulb value in the
unit of " ℃ or ℉ " , the lower display will show the
text " _Et " .
14

4-7 Type K/J thermometer
a. Function select to " Type K/J thermometer ",
refer to page 10.
b. Plug the Thermocouple Temp. Probe ( Type K Temp.
probe pr Type J Temp. probe, optional ) into " Type
K/J Probe Input Socket " ( 3-10, Fig. 1 )
The Display will show the measuring value that
sensing from the Temp. probe.
c. If the Display show the indicator " K ", it is ready
for Type K thermometer.
If the Display show the indicator " J ", it is ready
for Type J thermometer.
Remark :
The meter is defaulted to " Type K thermometer ".
If intend to select the " Type J thermometer with
default , please refer chapter 7-8, page 26.
4-8 Data Hold
During the measurement, press the " Hold Button " ( 3-3,
Fig. 1 ) once will hold the measured value & the LCD will
display a " HOLD " symbol.
Press the " Hold Button " once again will release the data
hold function.
4-9 Data Record ( Max., Min. reading )
1) The data record function records the maximum and
minimum readings. Press the " REC Button " (
3-4, Fig. 1 ) once to start the Data Record function and
there will be a " REC " symbol on the display.
2) With the " REC " symbol on the display :
a) Press the " REC Button " ( 3-4, Fig. 1 ) once, the
" REC MAX " symbol along with the maximum value
will appear on the display.
b) Press the " REC Button " ( 3-4, Fig. 1 ) again, the
" REC MIN " symbol along with the minimum value
will appear on the display.
15

c) Press the " REC Button " ( 3-4, Fig. 1 ) again,
the " MIN " symbol will be appeared, LCD only
show the " REC " symbol, the meter start the Data
Record function again.
3) To exit the memory record function, just press the "
REC Button " ( 3-4, Fig. 1 ) > 1.5 seconds
continuously. The display will revert to the current
reading.
4-10 LCD Backlight ON/OFF
1) After power ON, the " LCD Backlight " will light
automatically. During the measurement, press the "
Backlight Button " ( 3-2, Fig. 1 ) once will turn OFF
the " LCD Backlight ".
2) Press the " Backlight Button " once again will turn ON
the " LCD Backlight " again.
16

5. DATALOGGER
5-1 Preparation before execute datalogger function
a. Insert the SD card
Prepare a " SD memory card " ( 1 G to 16 G, optional ),
* It recommend use memory card ≦ 4 GB.
insert the SD card into the " SD card socket " ( 3-11, Fig. 1).
The front panel of the SD card should face against the
the down case.
If SD card just the first time use into the meter, it
recommend to make the " SD card Format " at first. ,
please refer chapter 7-6, page 25.
* It recommend strongly, do not use memory cards that
have been formatted by other meter or by a computer.
Reformat the memory card with your meter.
c. Time setting
If the meter is used at first time, it should to adjust the
clock time exactly, please refer chapter 7-1 ( page 23 ).
d. Decimal format setting
The numerical data structure of SD card is
default used the " . " as the decimal, for
example "20.6" "1000.53" . But in certain
countries ( Europe ...) is used the " , " as the
decimal point, for example " 20, 6 "
"1000,53". Under such situation, it should
change the Decimal character at first, details
of setting the Decimal point, refer to Chapter
7-5, page 25.
5-2 Auto Datalogger ( Set sampling time ≧
≧≧
≧ 1 second )
a. Start the datalogger
Press the " LOG Button ( 3-8, Fig. 1 ) > 1.5 seconds
continuously, the lower LCD will show the text of " Log "
( or show " Log " with the Temp. value alternately ),
17

then " REC " symbol will flashing per sampling time, at
the same time the measuring data along the time
information will be saved into the memory circuit.
Remark :
* How to set the sampling time, refer to Chapter 7-2,
page 24.
* How to set the beeper sound is enable, refer to
Chapter 7-4, page 24.
b. Pause the datalogger
During execute the Datalogger function, if press the
" LOG Button " ( 3-8, Fig. 1 ) once will pause the
Datalogger function ( stop to save the measuring data
into the memory circuit temporally ). In the same time
the " REC " symbol will stop flashing, the lower LCD
will show the text of " Log " ( or show " Log " with the
Temp. value alternately ).
Remark :
If press the " LOG Button " ( 3-8, Fig. 1 ) once again
will execute the Datalogger again, the " REC " symbol
will flashing.
c. Finish the Datalogger
During execute the Datalogger function, press the
" LOG Button ( 3-8, Fig. 1 ) > 1.5 seconds continuously
again will finish the Datalooger function, the " Log "
text will be disappeared and finish the Datalogger.
function.
18