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Lutron Electronics GC-2028, Operation Manual, Page: 13 / 15

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Lutron Electronics GC-2028 Operation Manual Download Page 13

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

Start Word = 02

D14

4

D13

When send the upper display data = 1
When send the lower display data = 2

D12 & 

Annunciator for Display

D11

   = 01 

℃

PPM =  19

   = 02

℉

D10

Polarity
0 = Positive 1 = Negative

D9

Decimal Point(DP), position from right to the
left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP

D8 to D1

Display reading, D8 = MSD, D1 = LSD
For example : 

If the display reading is 1234, then D8 to
D1 is : 00001234

D0

End Word = 0D

RS232 setting
Baud rate

9600 

Parity

No parity

Data bit no. 8 Data bits
Stop bit

1 Stop bit

11

Summary of Contents for GC-2028

Page 1: ...eld of precision measurement Although this CO2 METER is a complex and delicate instrument its durable structure will allow many years of use if proper operating t e c h n i q u e s a r e developed Ple...

Page 2: ...nal 4 3 11 DC 9V Power Adapter Input Socket 4 3 12 Reset button 4 3 13 CO2 Probe Head 4 3 14 CO2 Probe Handle 4 3 15 CO2 Probe Plug 4 4 MEASURING PROCEDURE 6 4 1 CO2 measurement 6 4 2 CO2 alarm settin...

Page 3: ...red 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 Heav...

Page 4: ...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 Ap...

Page 5: ...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...

Page 6: ...reading 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 specificatio...

Page 7: ...Button Enter Button 3 5 Set Button Button 3 6 Alarm 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...

Page 8: ...se 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 pl...

Page 9: ...n 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 t...

Page 10: ...unit AL Setting the CO2 alarm value ALt 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 wil...

Page 11: ...3 Fig 1 will escape the Advanced Setting procedures without saving the value function into the circuit memory 5 3 Setting the CO2 alarm value When the lower display show AL 1 Press the Enter Button 3...

Page 12: ...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 6 RS232 PC S...

Page 13: ...data 1 When send the lower display data 2 D12 Annunciator for Display D11 01 PPM 19 02 D10 Polarity 0 Positive 1 Negative D9 Decimal Point DP position from right to the left 0 No DP 1 1 DP 2 2 DP 3 3...

Page 14: ...V battery UM3 AA Alkaline heavy duty x 6 PCs and reinstate the cover 4 Make sure the battery cover is secured after changing the battery 8 SYSTEM RESET If the meter happen the troubles such as CPU sys...

Page 15: ...for the requirement for different environment however it is for reference only Building office home 1 000 PPM School 1 500 PPM Hotel public area 1 500 PPM Indoor swimming pool 1 500 PPM ASHRAE 1 000 P...

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