Lutron Electronics GC-2028 User manual

Carbon dioxide

CO METER

Model : GC-2028

Your purchase of this

CO2 METER MONITOR

marks a step forward for

you into the field o

precision measurement.

lthough this CO2

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............................................................

3. FRONT PANEL DESCRIPTION........................................... 4

3-1 Display.....................................................................

3-2 Power Button............................................................ 4

3-3 Hold Button ( Esc Button ).........................................

3-4 REC Button ( Enter Button ).......................................

3-5 Set Button ( Button ).............................................▲4

3-6 Alarm ( Button )....................................................▼4

3-7 Battery Compartment/Cover....................................... 4

3-8 Stand.......................................................................

3-9 Input socket..............................................................4

3-10 RS-232 Output Terminal........................................... 4

3-11 DC 9V Power Adapter Input Socket...........................

3-12 Reset button...........................................................

3-13 CO2 Probe Head...................................................... 4

3-14 CO2 Probe Handle...................................................

3-15 CO2 Probe Plu

.......................................................

4. MEASURING PROCEDURE................................................ 6

4-1 CO2 measurement..................................................... 6

4-2 CO2 alarm settin

......................................................6

4-3 Data Hold.................................................................

4-4 Data Record ( Max, Min readin

)...............................

5. ADVANCED SETTING....................................................... 8

5-1 Auto power off enable/disable....................................

5-2 Chan

e the Temp , unit......................................℃℉ 9

5-3 CO2 alarm value settin

............................................. 9

5-4 CO2 altitude compensation value settin

.....................

6. RS232 PC SERIAL INTERFACE..........................................10

7. BATTERY REPLACEMENT................................................. 12

8. SYSTEM RESET...............................................................12

9. ANNEX...........................................................................13

1. FEATURES

*NDIR method principal for CO2 ( Carbon dioxide )

measurement, available for long term operation.

*High repeatability and high accuracy.

*Separate probe, easy operation and convenient

for remote measurement.

*CO2 function with alarm setting.

*Can set the altitude compensation value with default.

*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 Custom one-chip of microprocessor LSI

circuit.

Display LCD size : 52 mm x 38 mm

dual function LCD display.

Measurement CO2 ( Carbon dioxide ), Temp.

Unit CO2 ppm

Temp. ,℃℉

Response Time

CO2 :

< 2 min. typically.

* Reach the 63% reading value

* Depend the environment air

circulation.

CO2 altitude 0 to 9,000 meters.

compensation

setting

Temperature Automatic temp. compensation.

Compensation

Advanced Auto power off enable/disable setting

setting / setting℃℉

CO2 alarm value setting

CO2 altitude value setting

Alarm Function Setting for CO2 measurement value.

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.

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 ( UM3, AA ) x 6 PCs,

or equivalent.

Power Current CO2 measurement

Approx. DC 9.6 mA for 90% period.

Approx. DC 128 mA for 10% period.

Weight Main instrument : 372 g/0.82 LB.

@ Battery is included.

CO2 probe : 158 g/0.35 LB.

Dimension Main instrument :

173 x 68 x 42 mm

(7.9 x 2.7x 1.2 inch)

CO2 Probe :

185 x 38 x 26 mm

Accessories Instruction manual.........................

1 PC

Included CO2 probe.....................................

1 PC

Hard Carryin

case.........................1 PC

Optional RS232 cable, UPCB-02

Accessories USB cable, USB-01

Data Acquisition software, SW-U801-WIN

2-2 Electrical Specifications (23±5 )℃

Range 0 to 4,000 ppm

CO2 Resolution 1 ppm

( Carbon Accuracy ± 40 ppm

dioxide )

* 1,000 ppm.≦

± 5%ofreading

23 ± 5 .℃

* > 1,000 ppm 3,000 ppm.≦

± 250 ppm typically

* > 3,000 ppm, reference only

Repeatability ± 20 ppm

* 3,000 ppm.≦

Range 0 to 50 ,32 to 122 .℃℃℉ ℉

Temperature Resolution 0.1 degree

Accuracy - 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. FRONT PANEL DESCRIPTION

3-1 Display

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 )▼

3-7 Battery Compartment/Cover

3-8 Stand

3-9 Input socke

3-10 RS-232 Output Terminal

3-11 DC 9V Power Adapter Input Socke

3-12 Reset button

3-13 CO2 Probe Head

3-14 CO2 Probe Handle

3-15 CO2 Probe Plu

4. MEASURING PROCEDURE

4-1 CO2 measurement

1)Plug the " CO2 Probe Plug " ( 3-15, Fig. 1 ) into the "

Probe Input Socket " ( 3-9, Fig. 1 ).

2)Power on the meter by pressing the " Power Button "

( 3-2, Fig. 1 ),

* The LCD will show the text " WARM UP "

The " Sampling indicator " will be rotated

in cycling.

Warm up time will take about 45 seconds, then

display will show the CO2 ( PPM ) value in the upper

LCD, the lower LCD will show the temperature value.

When the " Sampling indicator " rotate one cycle,

the CO2 measuring value will update one time.

* Response Time of CO2 is < 2 min. typically,

however it is depend on the environment air

circulation.

3)The meter Temp. display unit is defaulted to " ". If℃

intend to let the meter's temperature unit default to " "℉

, then please refer section 5-2 ( page 9 ).

4-2 CO2 alarm setting

During the CO2 measurement, if press the " Alarm

Button " ( 3-6, Fig. 1 ) once, the display will show the

indicator " ALARM " and going on to execute the CO2

alarm function. If the measurement value over the "

Alarm setting value ", the buzzer will sound.

* If press the " Alarm Button " ( 3-6, Fig. 1 ) once again,

the CO2 alarm function will be disabled, the ' ALARM "

indicator on the LCD will be disappeared.

* The procedures of setting the CO2 alarm value, please

refer 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.

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 " Set Button " ( 3-5, Fig. 1 ) once a

while in sequence to select the four main function, the

lower display will show :

PoFF.....Auto power ON/OFF management

t-CF......Change the Temp , unit℃℉

L.........Setting the CO2 alarm value

Lt.......

Setting the CO2 altitude compensation value

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 " 0 ", use the " Button " ( 3-5, Fig.▲

1 ) or " Button " ( 3-6, Fig. 1 ) to select the upper▼

value to " 0 " or " 1 ".

0 - Auto Power Off management will disable.

1 - Auto Power Off management will enable..

2)After select the upper value to " 0" or " 1", 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.

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