MRC COH-9905SD User manual

OPERATION MANUAL
SD card real time Data Recorder
CO2, Humidity, Dew point, Temp.
CO2 METER + HUMIDITY/Temp.
Model : COH-9905SD
PLEASE READ THIS MANUAL CAREFULLYBEFORE OPERATION
Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [email protected]
MRC.1.22

TABLE OF CONTENTS
1. FEATURES....................................................................................................................
1
2. SPECIFICATIONS..............................................................................................................
2
2-1 General Specifications......................................................................................................
2
2-2 Electrical Specifications...............................................................................
4
3. FRONT PANEL DESCRIPTION...........................................................................
6
4
MEASURING PROCEDURE...................................................................................................
7
5. OTHER FUNCTION..........................................................................................................
8
5-1 Data Hold...............................................................................................................................
8
5-2 Record ( Max./ Min. reading )..........................................................................................................
8
5-3 LCD Backlight OFF and 4rd-order LCD Backlight brightness ..........................................................................................................
8
6. DATALOGGER......................................................................................................................
9
6-1 Preparation before execute datalogger function...............................................................................
9
6-2 Auto Datalogger ( Set sampling time ≧
1 second ).............................................................
10
6-3 Manual Datalogger ( Set sampling time = 0 second )...........................................................
11
6-4 Check time information....................................................................................................................
11
6-5 Check sampling time information.....................................................................................................................
12
6-6 SD Card Data structure.............................................................................................................
12
7. Saving data from the SD card to the computer..............................................................
14
8. ADVANCED SETTING...............................................................................
16
9. POWER SUPPLY from DC ADAPTER.....................................................
22
10. BATTERY REPLACEMENT...................................................................................................
22
11. SYSTEM RESET.......................................................................................................................
23
12. RS232 PC SERIAL INTERFACE...........................................................................................
23
13. PATENT...........................................................................................................................
25

1. FEATURES
* Real time recorder, save the data into the SD memory
card and can be down load to the Excel, extra software
is no need. User can make the further data or graphic
analysis by themselves. under the Excel software.
* At the same time, the SD memory card can record 2
probe's data ( %RH/CO/Temp. ) along with the time information
into the one Excel file at the same time.
* Manual datalogger is available, during execute the
manual datalogger function, it can set the different
location no. ( position 1 to position 99 ).
* Air quality measurement application, multi-function :
CO2 ( Carbon monoxide ),
Humidity, temperature measurement.
* CO2 range : 0 to 10,000 ppm x 1 ppm.
* Humidity range: 10 to 95 %RH.
* Dew point Temp. and Wet bulb Temp. measurement.
* Temp. range : 0 to 50.0
℃
,
℃
/
℉
.
* CO2 sensor : NDIR.
* Humidity sensor : Precision capacitance sensor
* Alarm setting with the beeper sound output.
* Sampling time for data recorder is 2 to 3600 seconds.
* Meter can cooperate with 2 GB to 16 GB SD card, SD
card is optional.
* RS232/USB computer interface.
* Patented.
1

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 CO2 ( Carbon monoxide ),
Humidity
Dew point Temp., Wet bulb Temp.
Temperature
Sensor CO2 NDIR * Nondispersive infrared sensor
structure Humidity Precision capacitance sensor
Temp. Precision thermistor
Datalogger Auto 2,5,10,30,60,120,300,600,1800,3600 Second.
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% of total saved data max.
Memory Card SD memory card. 1 GB to 16 GB.
Advanced * SD memory card Format
setting * Set clock time
* Set sampling time
@ main setting * Auto power OFF management
* Set beep Sound ON/OFF
* Decimal point of SD card setting
* Temp. unit setting
* Alarm value setting
* Altitu value setting
2

Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
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.
Power Supply *Alkaline or heavy duty DC 1.5 V battery
( UM3, AA ) x 6 PCs, or equivalent.
*DC 9V adapter input. ( AC/DC power
adapter is optional ).
Power Current Normal operation ( w/o SD card save
CO2 data and LCD Backlight is OFF) :
measure- Approx. DC 65 mA.
ment When SD card save the data and LCD
Backlight is OFF) :
increase approx. DC 42.5 mA.
* If LCD backlight on, the power
consumption will increase approx.
10 mA.
Operating 0 to 50 ℃. ( 32 to 122 ℉ ).
Temperature
Operating Less than 80% R.H.
Humidity
Weight 350 g/0.77 LB.
Dimension Meter 177 x 68 x 45 mm
Accessories Instruction manual.............................. 1 PC
Included
Hard carrying case ......................................................
1 PC
Optional SD memory card
Accessories AC to DC 9V adapter.
USB cable, USB-01.
RS232 cable, UPCB-02.
Data Acquisition software, SW-U801-WIN.
3

2-2 Electrical Specifications (23±5 ℃ )
CO2 ( Carbon dioxide )
Range 0 to 10,000 ppm
CO2 Resolution 1 ppm
( Carbon Accuracy ±40 ppm
dioxide ) * ≦ 1,000 ppm.
±(50ppm +3% of reading)
23 ± 5 ℃. * > 1,000 ppm
≦
3,000 ppm.
±(50ppm +5% of reading) typically
* > 3,000 ppm ≦ 10,000 ppm. ,
Repeatability ± 20 ppm * ≦ 3,000 ppm.
Temperature Range 0 ℃ to 50 ℃,32 ℉ to 122 ℉.
Resolution 0.1 degree
Accuracy ℃ : ±0.8 ℃ ℉ : ±1.5 ℉.
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
℉
.
4

Dew Point Temp. ( 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..
Wet bulb Temp. ( 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..
@ Above specification tests under the environment RF Field Strength less than 3
V/M & frequency less than 30 MHz only.
5

3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display
3-2 Power Button ( Backlight Button )
3-3 Hold Button ( ESC Button )
3-4 REC Button ( )
3-5
▲
/ Function Button ( Alarm Button )
3-6
▼
Button/SCREEN Button
3-7 Time Button (SET Button )
3-8 ENTER Button ( Logger Button )
3-9 Stand
3-10 Battery Compartment/Cover
3-11 Battery Cover Screw
3-12 Tripod Fix Nut
3-13 SD Card Socket
3-14 Humidity/Temp. Sensing.
3-15 CO2 Seneing.
3-16 DC 9V Power Adapter Input Socket
3-17 Reset Button
3-18 RS-232 Output Terminal
6

4. MEASURING PROCEDURES
Measuring procedures
1) Power on the meter by pushing the " Power Button "( 3-2, Fig. 1 )
> 2 seconds the meter will be power on.
2) Press the " Screen Button " ( 3-6, Fig. 1 ) once in
sequence to select the measuring function Screen :
3) In Humidity/Temp. Measure scree ,Press the " Function Button " ( 3-5,
Fig. 1 ) once in sequence to select the DEW/
℃
or WET/
℃
measuring
function Screen :
Remark :
After select the desired function, power off the meter
then power on again, the meter circuit memory will
save the selected unit with default.
7

5. OTHER FUNCTION
5-1 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.
5-2 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.
c) To exit the memory record function, just press the
" REC Button " for 2 seconds at least. The display will
revert to the current reading.
5-3 LCD Backlight OFF and 4rd-order LCD Backlight brightness
Depending on the brightness of the environment,
can use the "Backlight Button " ( 3-2, Fig. 1 ) select
LCD Backlight from OFF and 4rd-order LCD Backlight brightness
Sequentially cycle.
8

6. DATALOGGER
6-1 Preparation before execute datalogger function
a. Insert the SD card
* It recommend use memory card ≦ 4 GB.
Prepare a " SD memory card " ( 1 GB to 16 GB, optional ),
insert the SD card into the " SD card socket " ( 3-13, Fig. 1 ).
The front panel of the SD card should face against the
down case.
b. SD card Format
If SD card just the first time use into the meter, it
recommend to make the " SD card Format " at first. ,
please refer chapter 8-1, page 17.
* 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 8-2, page 17.
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
8-6, page 20.
9

6-2 Auto Datalogger ( Set sampling time ≧ 1 second )
a. Start the datalogger
Press the " LOG Button ( 3-8, Fig. 1 ) > 2 seconds
continuously, the LCD will show the text of " LOGGER "
indecator and flashing per second, 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 8-3
page 18.
*How to set the beeper sound is enable, refer to
Chapter 8-5, page 19.
b. Pause the datalogger
During execute the Datalogger function , if press the
" Logger 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 text of " LOGGER " will be no flashing.
Remark :
If press the " Logger Button " ( 3-8, Fig. 1 ) once again
will execute the Datalogger again, the bottom text of "
DATALOGGER " 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 " LOGGER "
text will be disappeared and finish the Datalogger function.
10

6-3 Manual Datalogger ( Set sampling time = 0
second )
a. Set sampling time is to 0 second
Press the " LOG Button ( 3-8, Fig. 1 )>2 second, the LCD
will show the indecator " LOGGER " and " Position no. " symbol
then press the " LOG Button " ( 3-8, Fig. 1 ) once , the
" LOGGER " symbol will flashing once and Beeper will sound once
at the same time the measuring data along the time
information will be saved into the memory circuit .
Remark :
During execute the Manual Datalogger, press the " ▲
Button " ( 3-5, Fig, 1 ) the lower no. ( position no. ) will
flashing. It can use the " ▲ Button " ( 3-5, Fig. 1) or "
▼ Button " ( 3-6, Fig. 1 ) to set the measuring Location
no. ( 1 to 99, for example room 1 to room 99 ) to
identify the measurement location , the lower Display will
show P x ( x = 1 to 99 ).
b. 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 Position no. " PXX " will
be disappeared and finish the Datalogger function.
6-4 To check the time information
During the normal measurement screen ( not execute
the Datalogger ),
1) If press " Time Button " ( 3-7, Fig. 1 ) once , the lower
LCD display will present the time information of
Year/Month/Date/Hour/Minute/Secondin the lower Display.
11

6-5 Check sampling time information
During the normal measurement screen ( not execute the
Datalogger ), If press " Sampling Button " ( 3-8, Fig. 1 )
once , the lower LCD display will present the Sampling
time information in second unit.
6-6 SD Card Data structure
1) When the SD card is used into the meter, the SD card
When the first time, the SD card is used into the meter,
the SD card will generate a route :
C2B01
2)
If the first time to execute the Datalogger,
under the route C2B01\, will generate a new
file name C2B01001.XLS.
After exist the Datalogger, then execute again,
the data will save to the C2B01001.XLS until
Data column reach to 30,000 columns, then
will generate a new file, for example C2B01002.XLS
3)
Under the folder C2B01\, if the total files more
than 99 files, will generate anew route, such as
C2B01\ ........
4)
The file's route structure :
C2B01\
C2B01001.XLS
C2B01002.XLS
.....................
C2B01099.XLS
12

C2B01\
C2B01001.XLS
C2B01002.XLS
.....................
C2B01099.XLS
C2BXX\
.....................
.....................
Remark :
XX : Max. value is 10.
13

7. Saving data from the SD card
to the computer ( EXCEL software )
1) After execute the Data Logger function, take away the
SD card out from the " SD card socket " ( 3-13, Fig. 1 ).
2) Plug in the SD card into the Computer's SD card slot
( if your computer build in this installation ) or
insert the SD card into the " SD card adapter ". then
connect the " SD card adapter " into the computer.
3) Power ON the computer and run the " EXCEL software ".
Down load the saving data file ( for example the file
name : C2B01001.XLS, C2B01002.XLS ) from the SD
card to the computer. The saving data will present into
the EXCEL software screen ( for example as following
EXCEL data screens ) , then user can use those EXCEL
data to make the further Data or Graphic analysis
usefully.
EXCEL graphic screen ( for example, graphic )
14

EXCEL data screen ( for example )
15

8. ADVANCED SETTING
Under do not execute the Datalogger function,
press the " SET Button " ( 3-8, Fig. 1 ) continuously at
least two seconds will enter the " Advanced Setting " mode.
then press the " SET Button " ( 3-8, Fig. 1 ) once a while
in sequence to select the eight main function, the
display will show :
General advanced setting
SD Format..... SD memory card Format
Date Time...... Set clock time ( Year/Month/Date, Hour/
Minute/Second )
Sample Time.......
Set sampling time ( Hour/Minute/Second )
Auto off ....... Auto power OFF management
Beep Sound........
Set beeper sound ON/OFF
Decimal........
Set SD card Decimal character
Temp. unti........ Set the Temp. unit to ℃ or ℉
Alarm.............. Set the alarm value
Altitu.............. Set the altitu value
Escape...... Escape from the advanced setting

General advanced setting
8-1 SD memory card Format
When the lower display show " SD Format "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button " (
3-6, Fig. 1 ) to select the upper value to " Yes " or
" NO ".
Yes - Intend to format the SD memory card
NO - Not execute the SD memory card format
2) If select the upper to " Yes ", press the " Enter Button
" ( 3-4, Fig. 1 ) once again, the Display will show text
" Yes Enter " to confirm again, if make sure to do the
SD memory card format, then press " Enter Button "
once will format the SD memory clear all the existing
data that already saving into the SD card.
8-2 Set clock time ( Year/Month/Date,
Hour/Minute/ Second )
When the upper display show " Date Time "
1) Display Screen appear flash place, Use the "
▲
Button " ( 3-5,
Fig. 1 ) or "
▼
Button " ( 3-6, Fig. 1 ) to adjust the value ( Setting
start from Year value ). After the desired value is set, press the
" Enter Button " ( 3-4, Fig. 1 ) once will going to next value
adjustment ( for example, first setting value is Year then next to
adjust Month, Date, Hour,Minute, Second value ) Sequentially cycle.
Remark :
The adjusted value will be flashed.

2) After set all the time value ( Year, Month, Date, Hour,
Minute, Second ), press the " SET Button " ( 3-8, Fig.
1 ) once will save the time value, then the screen will
jump to Sampling time " setting screen ( Chapter 8-3 ).
Remark :
After the time value is setting, the internal clock will
run precisely even Power off if the battery is under
normal condition ( No low battery power ).
8-3 Set sampling time ( Second )
When the upper display show " sampling time "
1) Use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button "
( 3-6, Fig. 1 ) to adjust the value ( Setting start from
Hour value ). After the desired value is set, press the
" Enter Button " ( 3-4, Fig. 1 ) once will going to next
value adjustment ( for example, first setting value is
0,1,2,5,10,30,60,120,300,600,1800,3600 Second value ).
Remark :
The adjusted value will be flashed.
2) After set all the sampling time value ( Hour, Minute,
Second ), press the " SET Button " ( 3-8, Fig. 1 ) once
will save the sampling value with default then the
screen will jump to " Auto power OFF " setting
screen ( Chapter 8-4 ).
18