Ref.No.：072016
The CO2 concentration and voltage diagram: (The line①represents CO2 concentration, the
line②represents voltage/ current)
1.When
select
“HV
AC”,
AL1
<AL2
(HV
AC),
if
CO2
concentration
is
rising,
the
voltage/current
will
increase.
2. When select “GH”, AL1＞AL2 (GH), if CO2 concentration is rising, the voltage/current will
decrease.
Remark:
Under GreenHouse Mode, the AL1 must >AL2.
For example:AL1= 900ppm,AL1= 800ppm now, user decreaseAL1= 700ppm,AL2 will become 700-Step,
(AL2= 600ppm,if step=100ppm; AL1= 680ppm,if step= 20ppm).
Specification
Method –Dual Beam NDIR (Non-Dispersive-Infrared)
Sample Method -Diffusion or flow through (50 ~200 ml/min)
■CO2Specifications:
Measurement Range 0-3,000 ppm display
Display Resolution 1ppmat 0~1,000ppm;10ppm at 1,001~3,000ppm
Accuracy ±75ppm or ±5% of reading, whichever is greater
Repeatability ±20 ppm @400ppm
Temperature Dependence Typ.±0.2% of reading per °C or ±2 ppm per °C, whichever is
greater, referenced to 25°C
Pressure Dependence 0.13% of reading per mm Hg
Response Time About 2min for 90% of step change
Warm-Up Time About 60 seconds at 22°C
Sound Alarm About 65db@10cm
Zone LED Display
Green:<800ppmYellow:800~1200ppm Red: >=1200ppm
(HVAC mode)
Green:>1000ppmYellow:600~1000ppm Red: <=600ppm
(GreenHouse mode)
Power Supply DC (24V)
Linear Voltage Output
(optional) 0~10VDC (100 Ohms output impedance)
Linear Current Output(optional)
4~20mA(Max
Load is 500
Ohm)
( Max Load is 400 Ohm while power supply＜20 VDC )
RS232 (optional) Bund rate: 19200，Data length: 8bit Stop bit:1bit Parity bit:
none
Relay Output 30VDC or 250VAC, max 2A., SPST .Normally Open
Operating Temperature 0°C ~50°C (32°F~122°F)
Operating Humidity Range 0 ~ 95% RH non-condensing
Storage Temperature -20°C to +60°C (-4°F to 140°F)
■Temperature specification:
Temperature Range Display 0°C to 50°C
Display Resolution 0.1°C
Display Options °C
ccuracy
Relay (no action and be under the
alarm level)
±1°Cwhen the fan blows to the device directly, the accuracy
of temperature is +/- 1.5 °C
ccuracy
Relay (action and exceeds the
alarm level)
±2.5°Cwhen the fan blows to the device directly, the
accuracy of temperature is +/- 1.5 °C
Response Time 20-30 minutes (case must equalize with environment)
■RH Specification:
Measurement Range 20%-90% RH
Display Resolution 1%RH
Accuracy ±5%RH@23°C
Response Time About 5 min for 63% of step change
■Operating Conditions:
Operating Temperature 0°C to 50°C
Humidity Range 0 ~ 95% RH non-condensing
Dimension
Calibration
Notice: Before calibrating,you need standard gas or semi-standard gas; there are 3 methods to get
standard gas.
■Method A: use CO2 in office/building
-Use two Meters (One is the device for calibration. The other one is a calibrated (new) one.
-Use ambient room gas for calibration in office, waiting at least 10min,until the CO2 reading
doesn’t change
(Notice: user must not breathe toward the CO2 monitor, CO2 from the user will affect the reading
of CO2 monitor)
-Use the reading of the new device as the standard
-Calibrate the device by the Cali Mode instruction.
■Method B: use CO2 outsides
-Use ambient room gas for calibration outsides,waiting at least 10min,until the CO2 reading
doesn’t change
(Notice: user must not breathe toward the CO2 monitor; CO2 from the user will affect the reading
of ZGw19C)
-Use 380~420ppm as the standard reading.
-Calibrate the device by the Cali Mode instruction.
■Method C: use standard CO2 in the bottle
-Pump the standard CO2 gas (0~1000ppm, flux = 0.1~0.2 liter/min) into the CO2 monitor from
the Gas Entry Holewaiting about 2~3min.
- Calibrate the device by the Cali Mode instruction.
Fault Codes &Troubleshooting Guide
This section includes a list of FrequentlyAsked Questions for problems you may encounter with the
ZGw19C CO2 Monitor.
No
LCD Fault
Icon Description
of the fault Suggested Actions
1 Er3
The ambient temperature has
exceeded the temperature range
0°C to 50°C ( 32°F to 122°F)
This error will disappear when the
temperature returns to the range
between 0°C and 50°C ( 32°F to
122°F)
2 Er4
some wrong measurement or the
sensor has exceeded its expected
life
Please power on the device again. If
the “Er4” always appears, please
contact with the local dealer.
3 Er5
Er6 EEPROM System Problem Please power on the device again . If
the “Er5, Er6” always appear, please
contact with the local dealer.
4 Er7 Internal Data Transmission Error Please power on the device again.
Radiant Innovation Inc. Http://www.ZyAura.com
1F, No.3, Industrial East 9th Road, Science-Based
Industrial Park, HsinChu, Taiwan 300.
mm(inches)
