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Home > Products > Wall Mount CO2 monitor > ZG10U

Desktop CO2 Monitor

ZG106 / ZG106-F

ZG106A-M

ZG106A-H
(Under Developing)

ZG116 / ZG116-F

Wall Mount CO2 Monitor

ZG02C
(Under Developing)

ZG10U SERIES - ZG10U SEU & RDU

Power Indication

AL1

AL2

Falt Indication

	Features & Display Features and Modes
	LCD Display Symbol
	SEU (Sensor Unit) Function Instruction
	RDU (Remote Display Unit) Function Instruction
	Safety Notes
	Caring For Product
	Installation Instruction
	Customizing Settings
	Specifications
	Fault Codes & Troubleshooting Guide
	Adapters

SEU (Sensor Unit)

LCD display

Enter Button

	B.	Yellow LED
		(Fault indication)

	I.	Communication
		Cable to RDU

Red 2 LED (AL2)

Relay output

Red 1 LED (AL1)

Power Supply

	E.	Green LED
		(Power indication)

Rubber Cap

Reset Button

Gas Entry

Mode Button

Buzzer

RDU (Remote Unit)

	O.	Green LED
		(Power indication)

Enter Button

Red 1 LED (AL1)

Mode Button

Red 2 LED (AL2)

	V.	RJ45 Plug for
		next RDU

	R.	Yellow LED
		(Fault indication)

	V.	RJ45 Plug for
		SEU (Input)

LCD display

Buzzer

Features & Display Features and Modes

Features & Display Features

Modes

	NDIR (Non-Dispersive Infrared) technology is used to measure CO2
	concentration up to 50,000 ppm (parts per million).
	With the SEU(Sensor Unit) and RDU (Remote Display Unit), it can connect
	up to 3 RDU for safety notices
	Large digital LCD display clearly indicates the ambient CO2 Concentration
	and temperature
	Relay output can automatically control a fan to ventilate confined spaces
	Audible and visual alarm indications
	IP54 Water Proof Protection of SEU( Sensor Unit) except backside when
	installed on the wall

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LCD Display Symbol

Symbol

Meaning

Description

CO2 Concentration ppm (Parts Per Million)

Ambient CO2 concentration

Temperature (Celsius)

Ambient temperature in Celsius

Temperature (Fahrenheit)

Ambient temperature in Fahrenheit

Alarm

The Alarm Icon

MUTE

Alarm silencing function icon

Diagnose

Test communications between the SEU and RDU

First Alarm level

The relay will be triggered when CO2 concentration exceeds the first alarm level, the Red 1 LED will flash, and buzzer will sound

Second Alarm level

Safety Notice “ESC” displays on LCD when CO2 concentration exceeds the second alarm level. The Red 1& Red 2 LEDs will flash, and buzzer will sound

Calibration

To calibrate the CO2 sensor when the accuracy deviates from the actual CO2 concentration

Recover Factory Setting

To recover factory default settings and cancel any customize settings

ESC

To indicate the CO2 leakage once the CO2 level is above 3.0%

The CO2 concentration is above 5%

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SEU (Sensor Unit) Function Instruction

The SEU (Sensor Unit) should be placed in a room where the CO2 is likely to accumulate, such as a room where CO2 is stored, like an area with CO2 beverages. The large LCD displays the ambient CO2 concentration and the temperature.

The SEU has the "DIAG", "AL1", "AL2" "CALI", "ReFactSet" function. The "DIAG" function executes communication tests between the SEU and RDU. The user can do the calibration under the "CALI" mode when necessary. If data-setting is done incorrectly, the user can use the "ReFactSet" back to the original factory setting.

There have "“AL1" "AL2" two alarm levels, the alarm level is adjustable, the first alarm level is with parameter 0.5%, 1%, 1.5%, 2% , the default first alarm level is 1.5% . The second alarm level is with parameter 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, the default second alarm level is 3%.

When the ZG10U CO2 Monitor detects CO2 concentration that exceeds the first alarm level, the red 1 LED will blink and the buzzer will sound intermittently, the relay will be triggered. If the concentration of CO2 continues to rise above the second alarm level, the red 1 and red 2 LED’s will flash together and the tempo of the buzzer will increase. The green LED will light continuously when the power is normally supplied.

Warning:

If the ambient CO2 concentration reaches the second alarm level, on SEU & RDU, there will be a safety notice "ESC" displays on the LCD, the fault yellow LED will blink, Careful action, such as ventilating the space, must be taken before entering the room where the SEU is placed.

To clear the flashing "ESC" from the LCD, use the "ReFactSet" to restore the unit to the original factory settings, or unplug the AC adapter and reconnect it to the power.

If the communication cable between the SEU & RDU doesn’t connect well, like the communication cable looses in the Input port, the fault LED of SEU will blink, reconnect the cable, if the cable is inserted into the output port, on RDU, after °C/ °F flashing one minute, the "Er7" will flash on LCD. Unplug the cable and plug it into the Input port. The unit will work normally after corrective action.

If cleaning places where the SEU is installed, first take off rubber cap off and putting it on the position of gas entry. Water will not enter into the SEU during cleaning. The following picture shows the position changes of the rubber cap.

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RDU (Remote Display Unit) Function Instruction

	The RDU (Remote Display Unit) should be placed outside the room when in use. The RDU is connected to
	the SEU with a wire that has a maximum length of 25 feet. The RDU should be placed where it can be
	conveniently observed before entering the room where the SEU is located. The RDU is a repeater, and
	displays the measurements made by the SEU on an easy-to-read digital LCD along with important safety
	information.
	The RDU has "DIAG" function. The "DIAG" can test the communication between the SEU and RDU. Resetting
	the ZG10U CO2 Monitor is only available from SEU.

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Safety Notes

Warning:

Your safety is very important to us. To ensure to use the product correctly and safety, please read

these warnings and the entire User Manual before using the product. Otherwise, the protection provided by the equipment may be impaired. These warnings provide important safety information and should be observed at all times.

1.	Please handle the device carefully; do not subject the product to impact or shock.
2.	Do not submerge the product into water or any liquid. Water may cause electric shock, fire or malfunction
	which may result in damage
3.	Do not place the unit, or the adaptor near a heat source. Heat can cause distortion of the unit, which may
	result in an explosion or fire.
4.	Do not touch the exposed electronic circuitry of the device under any circumstances, as there is the
	dangerous of electric shocks.
5.	Please use the "DIAG" function to verify the communication between SEU and RDU, to make sure the
	communication between SEU and RDU works normally.
6.	Please make sure that the power adaptor is mounted by plug lock tightly, so the power adapter can not be
	disconnected without using of mechanical tools.
7.	Do not enter the room directly if there is safety notice "ESC" displays on the LCD of SEU & RDU.
	Some careful and protective action must be taken before entering the room where the SEU is installed.
.8.	Please take care of cable connection between SEU and RDU. Make sure the cable from SEU is connected
	into the INPUT port of RDU.
9.	Please ensure the external power supply is normally supplied to ventilation fan while the relay is working. If
	there has no normally power supply to the fan, the relay will not work, which may result in potential danger
	with high CO2 concentration in confined space.

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Caring For Product

To make sure to receive the maximum benefit from using this product, please observe the follow guidelines.

1.	Repair - Do not attempt to repair the product or modify the circuitry by yourself. Please contact your local
	dealer or a qualified repairman if the product needs servicing.
2.	Cleaning - Disconnect the power before cleaning. Use a damp cloth. Do not use liquid cleaning agents
	such as benzene, thinner or aerosols, as these will damage the device.
3.	Maintenance – We recommend users to test the communication between the SEU and RDU under "DIAG" function to verify the working conditions for the SEU and RDU. If the four LED’s blink and the buzzer of SEU and RDU sound simultaneously, it indicates that SEU and RDU work normally. When the LCD displays a safety icon "ESC", please take immediate protective action to check if CO2 leakage has occurred. We suggest users to do the calibration and thorough function check once within two year to make sure that the ZG10U CO2 Monitor is working properly.

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Installation Instruction

Please carefully take out the SEU (Sensor Unit), RDU (Remote Display Unit), panel holders, network cable

connector,7 meters communication cable, user manual, plug lock, screws,expansion plugs, nail cable clips,

warning paper from the package.

Step-by-Step Installation:

1.	Choose a suitable location to install the SEU. Fix the panel holder on the wall with the four screws
	(included), the recommend installation height is about 0.45 meters from floor and close to the manifolds
	and valves as possible.
2.	Put the SEU on the panel holder, make sure they are connected tightly.
3.	Fix another panel holder in a suitable location (the recommend installation height is about 0.45 meters
	from floor) outside the monitored space with screws (included). Push the RDU onto panel holder, and stick
	the warning paper next to RDU.
4.	The communication cable is pre-wired to the SEU. Route the cable to the RDU and fixed the
	communication cable to the wall by nail cable clips, and then plug the cable into the input port on the RDU.
	Communication is now ready between the SEU and RDU.
5.	The ZG10U CO2 Monitor has one relay output. The relay cable is pre-wired to SEU. The relay can control a
	fan or blower to ventilate the monitored space when necessary. The relay will be triggered when the CO2
	concentration exceeds the first alarm level.
6.	After finishing the installation, Connected the AC power adapter into the electrical supply outlet,
	Mount the Plug lock by expansion plugs so that the power adapter cannot be disconnected without use of
	mechanical tools.
7.	When the power is connected, The SEU and the RDU will begin to work. Please use the "DIAG" function to
	verify the communication between SEU and RDU, the four LED will blink and buzzer will sound on SEU & RDU. After the communication is ready, the content of display is same on SEU & RDU.

Mount the plug lock

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Customizing Settings

When power has been connected, the SEU and RDU will begin to monitor the CO2 concentration and the temperature. In order to the get the timely alarm safety information and meet the personal requirements, It is advisable to set up the customizing parameter when necessary.

Temperature °C/°F

	1. Press "Enter" to switch between °C and °F temperature

Using the DIAG function

	1. Press Mode until the "DIAG" icon flashes
	2. Press Enter, the four LED’s will blink on the SEU and the
	3. The four LED’s will blink and buzzer will sound simultane

Setting the First Alarm parameter

	1. Press Mode until the "AL1" icon flashes
	2. Press Enter, the "AL1" icon shows on LCD
	3. Press Mode to go through "0.5%, 1%, 1.5%, 2%" alarm level
	4. Press Enter again to save the setting after selection

Setting the Second Alarm parameter

	1. Press Mode until the "AL2" icon flashes
	2. Press Enter, the "AL2" icon shows on LCD
	3. Press Mode to go through "1.5%, 2%, 2.5%, 3%, 3.5%, 4%" alarm level
	4. Press Enter again to save the setting after selection
	*Note: The second alarm level should be higher than the first alarm level when setting with the alarm level
	parameter.

Using the CALI function

	1.Press Mode until the "CALI" icon flashes
	2.Press Enter, the "CALI" icon shows on the LCD
	3.Press and hold Mode for at least 10 seconds. The "CALIBRATING" icon will flash. The calibration will be
	done automatically. After 10 minutes the LCD will display "Pass" or "Fail." If "Fail," please try again.
	*Note:	When do the calibration, it is suggested to take SEU outside, use the ambient gas for calibration and wait for around 10 minutes until the CO2 reading of SEU doesn’t change. Then, use the 380-420 ppm as the standard CO2 reading. Calibrating the unit according to "CALI" mode instruction, user should not breathe toward to SEU during the calibration process, as the CO2 from the user will affect the CO2 reading of SEU.

Using the ReFactSet function

	1. Press Mode until the "CALI" icon flashes
	2. Press Enter, and then press Mode to choose either "Yes" or "No"
	3. Press Enter again to save the setting after selecting
	*Note: If the user sets the data or calibrates the sensor incorrectly, use the ReFactSet (recover the factory
	Setting) to come back the default factory setting.

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Specifications

	Method - NDIR
	Sample Method - Diffusion or flow through (50 ~200 ml/min)

Performance - CO2

Measurement Range	0~50,000ppm (5%) display
Display Resolution	10 ppm
Accuracy	±100 ppm or ±5% of reading, whichever is greater
Repeatability	±20 ppm @400 ppm
Annual Drift	<20 ppm/Year@400ppm
Temperature Dependence	±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	<60 seconds for 90% response to step change
AL1 (First Alarm Level)	0.5 / 1 / 1.5 / 2 % , Default AL1= 1.5%
AL2 (Second Alarm Level)	1.5 / 2 / 2.5/ 3 / 3.5 / 4 %, Default AL2= 3%
Warm-Up Time	<60 seconds at 22°C
Sound Alarm	80db@10cm

Power Supply
&
Relay Output

Power Supply

AC adapter 110/220 VAC

AC Input

Voltage

100 ~ 240 VAC

Frequency

50 / 60 Hz

Power Requirement

	1 W maximum @ 115 VAC 60 Hz
	2 W maximum @ 230 VAC 50 Hz

AC/DC Output

Voltage

6VDC

Power

1.8 W

Peak Input Current

0.3 A from 6 VDC

Relay Output

30 VDC or 250 VAC, max 2A, SPST, Normally Open

Temperature specification

	Temperature Range: Display 0°C to 50°C( 32°F to 122°F)
	Display Resolution: 0.1°C(0.1°F)
	Display Options: °C / °F
	Accuracy: ±1°C(±2°F) when CO2 concentration is below first alarm level
	Response Time: 20-30 minutes (case must equalize with environment)

Operating Conditions

	Operating Temperature: 0°C to 40°C ( 32°F to 104°F), 0-95% RH, non-condensing
	Storage Temperature: -20 to 60°C ( -4 to 140°F)

Dimensions

	SEU: 124.8 ×167.7 × 46.57 mm (4.91 × 6.6 × 1.83 inch)
	RDU: 85.0 × 117.5 × 33.4 mm (3.35 × 46.3 × 1.32 inch)

Weight (including batteries)：

	SEU: 450 grams( oz)
	RDU: 130 grams

Fault Codes & Troubleshooting Guide

This section includes a list of Frequently Asked Questions for problems you may encounter with the ZG10U CO2 Monitor.

No.	LCD Fault Icon	Description (of the fault)	SEU Indication	RDU Indication	Suggested Actions
1	Er3	The ambient temperature has exceeded the temperature range 0°C to 50°C (32°F to 122°F)	"Er3" flash Fault LED blink, Buzzer beep	“Er3” flash Fault LED blink, Buzzer beep	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	"Er4" flash. Fault LED blink, Buzzer beep	“Er7” flash. Fault LED blink, Buzzer beep	Please unplug the AC adapter and reconnect it. If the "Er4" always appears, please contact with the local dealer.
3	Er5 Er6	EEPROM System Problem	"Er5”&"Er6" flash, Fault LED blink, Buzzer beep	“Er7” flash, Fault LED blink, Buzzer beep	Please unplug the AC adapter and reconnect it. If the “Er5,Er6” always appear, please contact with the local dealer.
4	Er7	Internal Data Transmission Error	“Er7” flash, Fault LED blink, Buzzer beep	“Er7” flash, Fault LED Blink, Buzzer beep	1. Please unplug the AC adapter and reconnected it. 2. Check the RJ45 plug is connected into the INPUT port of RDU,if the "Er7" displays on the RDU only.
5	Er8	The accuracy of CO2 sensor may deviate from the actual CO2 concentration	“Er8” flash Fault LED blink, Buzzer beep	“Er8” flash Fault LED blink, Buzzer beep	1.Please unplug the AC adapter and reconnect it If the "Er8" still appears, please contact with the local dealer. 2. Please calibrate the unit, after the calibration, If the "Er8" still appears, please contact with the local dealer.