Lutron Electronics GCH-2018 Manuel utilisateur

Carbon dioxide + Humidity, Temperature

CO METER

: GCH-2018

Your purchase of this CO2 METER marks a step forward for you

into the field of precision measurement. Although this CO2 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......................................................................

2. SPECIFICATIONS............................................................

3. FRONT PANEL DESCRIPTION........................................... 5

3-1 Display......................................................................5

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

3-3 Hold Button ( Esc Button )..........................................5

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

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

3-6 Alarm/Dew point Button ( Button ).........................

▼5

3-7 Battery Compartment/Cover....................................... 5

3-8 Stand........................................................................5

3-9 Input socket..............................................................5

3-10 RS-232 Output Terminal...........................................5

3-11 DC 9V Power Adapter Input Socket........................... 5

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

3-13 CO2 Probe Head...................................................... 5

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

3-15 CO2 Probe Plug.......................................................

3-16 Humidity Probe Head...............................................

3-17 Humidity Probe Handle.............................................5

3-18 Humidity Probe Plug.................................................5

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

4-1 CO2 measurement..................................................... 7

4-2 Humidity measurement.............................................. 7

a. Humidity/Temp. measurement.................................. 7

b. Dew point measurement..........................................

4-3 CO2 alarm setting......................................................8

4-4 Data Hold..................................................................8

4-5 Data Record ( Max, Min reading )...............................

5. ADVANCED SETTING....................................................... 9

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

5-2 Change the Temp , unit......................................℃℉ 11

5-3 CO2 alarm value setting.............................................11

5-4 CO2 altitude ( Height ) value setting........................... 12

6. RS232 PC SERIAL INTERFACE..........................................12

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

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

9. ANNEX...........................................................................

1. FEATURES

*NDIR method principal for CO2 ( Carbon dioxide )

measurement, available for long term operation.

*High repeatability and high accuracy.

*Two probes, one is for CO2/Temp. measurement, the

other probe is for Humidity/Temp./Dew point

measurement.

*Separate probe, easy operation and convenient

for remote measurement.

*CO2 function with alarm setting.

*Can set the altitude ( height ) value with default for

compensation.

*Humidity measurement with fast response time.

*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.

Humidity, Dew point, Temp.

Unit CO2 ppm

Humidity % RH

Dew point ,℃℉

Temp. ,℃℉

Response Time

CO2 :

< 2 min. typically.

* Reach the 63% reading value

* Depend the environment air

circulation.

Humidity/Dew point :

10 to 30 seconds typically.

* Reach the 85% reading value

* Depend the environment air

circulation.

CO2 Altitude 0 to 9,000 meters.

( Height )

For precision measurement, it need to set the meter's

value setting

environment altitude ( height ) value for the compensation.

Temperature Automatic temp. compensation.

Compensation

Advanced Auto power off enable/disable setting

setting / setting℃℉

CO2 alarm value setting

CO2 altitude value setting

Alarm setting For CO2 measurement only.

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.

Probes no. Two probes :

* Probe 1 is for CO2, Temp. measurement.

* Probe 2 is for Humidity, Dew point.

Temp. measurement.

Operating 0 to 50 .℃

Temperature

Operating Main instrument : Less than 85% R.H.

Humidity C02 probe : Less than 85% R.H.

Humidity probe : 0 to 95 %RH.

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.

Humidity measurement

Approx. DC 5.6 mA.

Weight Main instrument : 372 g/0.82 LB.

@ Battery is included.

CO2 probe : 158 g/0.35 LB.

Humidity probe : 82 g/0.18 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

Humidity Sensor Probe :

200 x 23 x 19 mm

Accessories Instruction manual.........................1 PC

Included CO2 probe.....................................1 PC

Humidity 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 )℃

CO2 ( Carbon dioxide )

Range 0 to 4,000 ppm

CO2 Resolution 1 ppm

( Carbon Accuracy ± 40 ppm

dioxide )

* 1,000 ppm.≦

± 5% of reading

* > 1,000 ppm 3,000 ppm.≦

23 ± 5 .℃

± 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 .℉℉

Humidity/ Temp./Dew point

Humidity/ Temperature

Range 10 % 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

℃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..

@ 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/Dew point Button ( Button )▼

3-7 Battery Compartment/Cover

3-8 Stand

3-9 Input socket

3-10 RS-232 Output Terminal

3-11 DC 9V Power Adapter Input Socket

3-12 Reset button

3-13 CO2 Probe Head

3-14 CO2 Probe Handle

3-15 CO2 Probe Plug

3-16 Humidity Probe Head

3-17 Humidity Probe Handle

3-18 Humidity Probe Plug

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 11 ).

4-2 Humidity measurement

a. Humidity/Temp. measurement

1)Plug the " Humidity Probe Plug " ( 3-18, 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 shows the unit " %RH " & " "℃

at the same time and measured value will show on

the display ( upper display is Humidity value, the

lower display is the temperature value ) .

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 11 ).

b. Dew point measurement

The procedures of " Dew point measurement " are same

as the above " a. Humidity/Temp. measurement "

except press the " Dew point Button " ( 3-6, Fig. 1 ) once,

the lower LCD will show the indicator " DEW " & and the

Dew point value along the unit. " ( or ).℃℉

* The upper display will still show the humidity value

and not change.

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

the lower LCD will return the Temp. value.

4-3 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 11 ).

4-4 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.

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