lutron co meter
CO METER
Model : GCO-2008
Carbon monoxide 0 to 1000 PPM, Temp.
Your purchase of this
CO METER MONITOR
marks a step forward for
you into the field of
precision measurement.
Although this CO 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............................................................. 1
3. FRONT PANEL DESCRIPTION........................................... 4
3-1 Display...................................................................... 4
3-2 Power Button.............................................................4
3-3 Hold Button ( Esc Button ).......................................... 4
3-4 REC Button ( Enter Button )........................................4
3-5 Set Button ( ▲ Button )............................................. 4
3-6 Alarm Button ( ▼ Button ).......................................... 4
3-7 Battery Compartment/Cover....................................... 4
3-8 Screws for Battery Compartment.................................4
3-9 Stand........................................................................ 4
3-10 RS-232 Output Terminal........................................... 4
3-11 DC 9V Power Adapter Input Socket........................... 4
3-12 Reset button............................................................ 4
3-13 CO Sensing Head..................................................... 4
4. MEASURING PROCEDURE.................................................5
4-1 CO measurement....................................................... 5
4-2 CO alarm setting........................................................ 6
4-3 Data Hold.................................................................. 6
4-4 Data Record ( Max, Min reading )................................6
5. ADVANCED SETTING....................................................... 7
5-1 Auto power off enable/disable.....................................8
5-2 Change the Temp ℃, ℉ unit...................................... 8
5-3 CO alarm value setting............................................... 9
6. RS232 PC SERIAL INTERFACE.......................................... 10
7. BATTERY REPLACEMENT..................................................11
8. ZERO ADJUSTMENT.........................................................12
9. SYSTEM RESET................................................................12
10. CO value via HEALTH INFORMATION.............................. 13
1. FEATURES
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*
*
*
*
*
*
*
*
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*
*
*
Two function : CO ( Carbon monoxide ), Temperature.
CO range : 0 to 1,000 ppm x 1 ppm.
Temperature. : 0 to 50 ℃,℃/℉
CO measurement with fast response time.
High repeatability and high accuracy.
stand-alone device, easy to carryout and operation.
CO function with alarm setting.
Large S-TN LCD, high contrast, easy readout.
Data hold function for freezing the desired value
on display.
Records Maximum and Minimum readings with Recall.
RS232/USB computer interface.
Microprocessor circuit assures maximum possible
accuracy, provides special functions and features.
Heavy duty & compact housing with hard carrying case,
designed for easy carry out & operation.
Auto shut off is available to save battery life.
Power supply from batteries or DC 9V adapter in.
2. SPECIFICATIONS
2-1 General Specifications
Circuit
Display
Measurement
Unit
Custom one-chip of microprocessor LSI
circuit.
LCD size : 52 mm x 38 mm
dual function LCD display.
CO( Carbon dioxide ),
Temperature
CO
ppm
Temp.
℃, ℉
1
Temperature
Compensation
Advanced
Setting
Automatic temp. compensation for
CO measurement.
Auto power off enable/disable setting
℃/℉ setting
CO alarm value setting
Alarm Setting For CO measurement only.
Sensor Type
CO : Electrochemical
Temperature : Thermister
Data Hold
Freeze the display reading.
Memory Recall Maximum & Minimum value.
Display
Approx. 1 second.
Sampling Time
Power off
Auto shut off saves battery life or
manual off by push button.
Zero
Build in zero button for offsetting
the zero value
Data Output
RS 232/USB PC serial 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 DC 1.5 V battery ( UM4, AAA ) x 6 PCs,
Alkaline/heavy duty type or equivalent.
Power Current Approx. DC 5.6 mA.
Weight
336 g/0.74 LB. @ Battery is included.
Dimension
210 x 68 x 42 mm (8.3 x 2.7x 1.2 inch)
Accessories
Instruction manual......................1 PC
Included
Soft carrying case ( CA-05A ).......1 PC
Optional
RS232 cable, UPCB-02
Accessories
USB cable, USB-01
Data Acquisition software, SW-U801-WIN
2
2-2 Electrical Specifications (23± 5 ℃)
CO ( Carbon dioxide )
CO
* Carbon
monoxide
Range
Resolution
Accuracy
Response
time *
Repeatability
Zero drift in
long term
Sensitivity
drift
0 to 1,000 PPM
1 ppm
± ( 5% + 2 PPM )
< 30 seconds
< 2%
< 5 PPM
< 5% per year
* The response time value is specified to reach
the 90% reading value.
Temperature
Range
Temperature Resolution
Accuracy
0 ℃ to 50 ℃,32 ℉ to 122 ℉.
0.1 degree.
℃
± 0.8 ℃
℉
± 1.5 ℉.
@ Above specification tests under the environment RF Field Strength less than 3
V/M & frequency less than 30 MHz only.
3
3. FRONT PANEL DESCRIPTION
3-1 Display
Fig. 1
3-2 Power Button
3-3 Hold Button ( Esc Button )
3-4 REC Button ( Enter Button )
3-5 Set Button ( ▲ Button )
3-6 Alarm Button ( ▼ Button )
3-7 Battery Compartment/Cover
3-8 Screws for Battery Compartment
3-9 Stand
3-10 Tripod Fix Nut
3-11 RS-232 Output Terminal
3-12 DC 9V Power Adapter Input Socket
3-13 Reset button.
3-14 CO Sensing Head
4
4. MEASURING PROCEDURE
4-1 CO measurement
1)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ), wait about 30 seconds to warm up the
meter, Display ( 3-1, Fig. 1 ) will show the CO value
with the " PPM " unit in the upper display, at the same
time the lower display will show the Temp. value that
sensing from the " CO Sensing Head " ( 3-14, Fig. 1 ).
CO
0
PPM
26.3 ℃
Remark :
* If the measuring environment is not existing the CO
value, the upper display will show 0 to 1 ppm.
Under open air environment ,
If Display show few digits CO value, please make
the Zero adjustment " , refer to chapter 8, page 12.
* Response time of CO measurement is < 30 seconds
typically, however it is depend on the environment air
circulation.
* The Temp. display unit is defaulted to " ℃ ". If
intend to let the meter's temperature unit default to
" ℉ ", please refer to section 5-2 ( page 8 ).
5
4-2 CO alarm setting
During the CO measurement, press the " Alarm
Button " ( 3-6, Fig. 1 ) once, the display will show the
indicator " ALARM " and going on to execute the CO
alarm function. If the measurement value over the "
Alarm setting value ", the buzzer will sound.
* When the Display show the " ALARM " indicator, press
the " Alarm Button " ( 3-6, Fig. 1 ) once again, will
disable the CO alarm function, the ' ALARM " indicator on
the LCD will be disappeared.
* The procedures of setting the CO alarm value, please
refer to section 5-3 ( page 9 ).
4-3 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.
4-4 Data Record ( Max., Min. reading )
* 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.
* 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.
If intend to delete the maximum value, just press
the " Hold Button " ( 3-3, Fig. 1 ) once, then the
display will show the " REC. " symbol only & execute
the memory function continuously.
6
b)Press the " REC Button " ( 3-4, Fig. 1 ) again, the
" REC. MIN. " symbol along with the minimum value
will appear on the display.
If intend to delete the minimum value, just press
the " Hold Button " ( 3-3, Fig. 1 ) once, then
the display will show the " REC. " symbol only &
execute the memory function continuously.
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. ADVANCED SETTING
When execute the following Advanced
Setting Procedures should cancel the " Hold
function " and the " Record function " first. The
display will not show the " HOLD " and the " REC "
indicator
Press the " Set Button " ( 3-5, Fig. 1 ) continuously at
least two seconds will enter the " Advanced Setting ",
then press the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼
Button " ( 3-6, Fig. 1 ) once a while in sequence to
select the three main function, the lower display will
show :
PoFF..... Auto power ON/OFF management
t-CF...... Change the Temp ℃, ℉ unit
AL.........Setting the CO alarm value
7
5-1 Auto power ON/OFF
When the lower display show " PoFF " :
1)Press the " Enter Button " ( 3-4, Fig. 1 ) once, the upper
display will show " YES ", use the " ▲ Button " ( 3-5, Fig.
1 ) or " ▼ Button " ( 3-6, Fig. 1 ) to select the upper
text to " no " or " YES ".
no - Auto Power Off management will disable.
YES - Auto Power Off management will enable..
2)After select the upper text to " no " or " YES ", press
the " Enter Button " ( 3-4, Fig. 1 ) will save the
setting value ( function ) with default.
* If before press the " Enter Button ", just press
the " ESC Button " ( 3-3, Fig. 1 ) will escape the
Advanced Setting procedures without saving the
value ( function ) into the circuit memory.
5-2 Change the Temp ℃, ℉ unit
When the lower display show " t-CF " :
1)Press the " Enter Button " ( 3-4, Fig. 1 ) once, the upper
display will show " C " or " F ", use the " ▲ Button "
( 3-5, Fig. 1 ) or " ▼ Button " ( 3-6, Fig. 1 ) to select the
upper text to " C " or " F ".
C - The Temp. unit is ℃.
F - The Temp. unit is ℉.
2)After select the upper text to " C " or " F ", press the
" Enter Button " ( 3-4, Fig. 1 ) will save the setting Temp.
unit ( ℃,℉ ) with default.
* If before press the " Enter Button ", just press
the " ESC Button " ( 3-3, Fig. 1 ) will escape the
Advanced Setting procedures without saving the
value ( function ) into the circuit memory.
8
5-3 Setting the CO alarm value
When the lower display show " AL " :
1)Press the " Enter Button " ( 3-4, Fig. 1 ) once, the upper
display will show " CO alarm value " with PPM unit,
use the " ▲ Button " ( 3-5, Fig. 1 ) or " ▼ Button " ( 3-6,
Fig. 1 ) to select the " CO alarm value ".
2)After setting the CO alarm value, press the
" Enter Button " ( 3-4, Fig. 1 ) will save the setting value
with default.
* If before press the " Enter Button ", just press
the " ESC Button " ( 3-3, Fig. 1 ) will escape the
Advanced Setting procedures without saving the
alarm value into the circuit memory.
9
6. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5
mm terminal ( 3-11, Fig. 1 ).
The data output is a 16 digit stream which can be
utilized for user's specific application.
A RS232 lead with the following connection will be
required to link the instrument with the PC serial port.
Meter
PC
(3.5 mm jack plug)
(9W 'D" Connector)
Center Pin........................Pin 4
Ground/shield.....................Pin 2
2.2 K
resister
Pin 5
The 16 digits data stream will be displayed in the
following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Each digit indicates the following status :
D15
D14
D13
Start Word = 02
4
When send the upper display data = 1
When send the lower display data = 2
10
D12 &
D11
D10
D9
D8 to D1
D0
Annunciator for Display
℃ = 01
PPM = 19
℉ = 02
Polarity
0 = Positive 1 = Negative
Decimal Point(DP), position from right to the
left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
Display reading, D8 = MSD, D1 = LSD
For example :
If the display reading is 1234, then D8 to
D1 is : 00001234
End Word = 0D
RS232 setting
Baud rate
9600
Parity
No parity
Data bit no.
8 Data bits
Stop bit
1 Stop bit
7. BATTERY REPLACEMENT
1)When the left corner of LCD display show "
", it
is necessary to replace the battery. However, in-spec.
measurement may still be made for several hours after
low battery indicator appears before the instrument
become inaccurate.
2)Loose the " Screws for Battery Compartment " ( 3-8,
Fig. 1 ) take the " Battery Cover " ( 3-7, Fig. 1 ) away
from the instrument and remove the battery.
3)Replace with DC 1.5 V battery ( UM4, AAA,
Alkaline/heavy duty ) x 6 PCs, and reinstate the cover.
4)Make sure the battery cover is secured after changing
the battery.
11
8. ZERO ADJUSTMENT
Put the meter into the clean air environment ( not
contain any CO value ), power on the meter by
pressing the " Power Button " ( 3-2, Fig. 1 ), wait
about 30 seconds to warm up the meter.
If the display not show " Zero " CO value, then pressing
" Alarm Button " ( 3-6, Fig. 1 ) continuously at
least two second will offset the display value and
show " 0 PPM ".
* The zero adjustment procedures are effected only
existing Display value is within 10 PPM.
9. SYSTEM RESET
If the meter happen the troubles such as :
CPU system is hold ( for example, the key button can
not be operated... ).
Then make the system RESET will fix the problem.
The system RESET procedures will be either following
method :
During the power on, use a pin to press the " Reset
Button " ( 3-13, Fig. 1 ) once a while will rest the
circuit system, After execute the " System reset " the
setting value of : Advanced Setting " will be cleared
and return to default value.
12
10. CO value via HEALTH
INFORMATION
0 to 1 PPM
9 PPM
General environment
Max. exposure time : 8 hours
35 PPM
Max. exposure time : 1 hour
50 PPM
Max. exposure time : 8 hour
100 PPM
Max. exposure : 100 minutes
* United States Environmental Protection Agency
* United States Environmental Protection Agency
* OSHA
* Circulation air
200 PPM
* UL2034
Headache, tired : Two to three hours
Max. exposure : 35 minutes
* UL2034
400 PPM
Headache, tired : One to two hours
Harm the life : Three hours
Max. exposure : 15 minutes
800 PPM
Headache, tired : 45 minutes
Death : Two to three hours.
Death : One hour.
* UL2034
1600 PPM
Attention :
* Above health information are for reference only.
* The different age, sex, weight and personal heath
condition will get the different effecting.
13
0712-GCO2008
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