AZ 7530-US Controller with External Sensor Instruction Manual

Power Supply
The meter is powered by AC100~240VAC directly. Use the USA piggyback plug for power connection. For EU&UK type, the power coil & output coil are separated.

Placement
An external CO2 sensing probe is included with a 4.5-meter cable. Place the probe away from water spray for longevity. Use screws provided to mount the sensing probe and controlling meter.

Operation
Power On:

Plug the power plug into the wall socket to turn on the controller.

The device will display firmware information and Warm Up during a 10-second countdown.
To turn off the meter, unplug the power plug.

Upon powering on again, the meter will retain previous settings.

FAQ:

Q: How do I change the CO2 calibration settings?
A: To recalibrate CO2 levels, navigate to the RE-CALI option in the LCD display menu and follow the on-screen instructions.
Q: What is the purpose of the safety fuse?
A: The safety fuse is installed to prevent damage due to power overload. Contact your distributor or shop for a replacement fuse if needed.

INTRODUCTION
Thank you for purchasing this wall mount COz controller. An external CO2 sensing probe is included to help you measure COz level in a closed space. This COz controller has a USA type piggyback plug
to get AC power from wall power socket and also provide controlling function to other connected devices, such as COz generator and ventilation fan. To ensure safety, please read this manual carefully before installation and follow up the instructions. Store this manual in a secure place for future reference.

Features

Accurate & low drift NDIR CO measuring

External COz sensor to be used in a closed space
Display real time COz value

Display COz chart with adjustable time scale (week/day/hour/min/auto)
Auto Max. /Min. Recall on COz chart

Programmable COz zone value & COz center value to control output power on/off
Audible alarm warns COz concentration

Target zone indicator on COz chart
Built-in Day/Night auto detection on COz probe to override COz control
Backlight to assist operation in dark place
Monitoring& Controlling COz value in Green house, residential and commercial building

MATERIAL SUPPLIED
This package contains:

Meter (controller+sensing)
Operation manual
Paper box
Screws and tape

POWER SUPPLY

The meter is powered by AC100~240 VAC directly. The power plug is a USA piggyback plug type so you can plug in the device you want to control.

For customers who must use EU or UK or FR or AU type plug, the power coil & output coil are separated.

PLACEMENT

An external CO2 sensing probe is included to help you measure CO2 level in a closed space, the cable is 4.5 meter long to extend your measure spot 4.5 meter away from display. Please make probe and meter away from water spray to extend the life time. Screws are provided in package. First using the provided wall sticker to locate the spot where you want to hang the sensing probe and controlling meter on , drill to fix screw and hang devices.

SAFETY FUSE
The meter is powered by AC100~240 VAC directly and provide power through piggyback socket or EU/UK/FR/AU type socket to drive CO2 generator or ventilation. To avoid the damage by power overload, a 3KA@300VAC fuse is installed in meter. Contact distributor or shop to purchase new fuse while necessary. See appendix for detail.

KEYPAD& LED INDICATOR

Enter setup mode.
Save and finish settings.
Select mode or increase value in calibration and setup.
Change time scale. Select mode or decrease value in calibration and setup.
Power: Green on while powered
Day time: Green on while detected light is >60 lux for 10 sec.
Output: Green on while relay is ON

LCD DISPLY

OPERATION

POWER ON
Plug the power plug into the wall socket to turn the controller on. While connect is successful, the device will show full display with a short beep and then performs 10 sec. countdown to warm up and also displays firmware information and “Warm Up” in chart display section. Unplug the power plug to turn off the meter. While power on the meter again, the meter will retain the same setting from last operation, except the chart time will stay as 1 day while re-powered.

TAKING MEASUREMENT
The meter starts taking measurement after power on and updates readings every 5 seconds. If your application is for green house CO2 control, no initial setup is needed. In the condition of operating environment change (ex. from high to low temp.), it takes 30 sec to respond for CO2 change. Do not hold the sensing probe close to face in case that exhalation affects CO2

The device constantly displays current ambient CO2, set center value and set zone value.

Trend Chart Zone
Below is a table that shows the available time scale and the duration of each division for corresponding scale:
Using to toggle the available time scale. When you choose auto cycle , you will see on LCD and time scale exchange every 20 sec.

Time Span	Time per division
1min	5sec/div
1hour	5 min/div
1day	2 hour/div
1week	0.5 day/div
Auto cycle	Cycle above

MAX/MIN of displayed chart
At the right side of the displayed chart, there are two numerical indicators:
Max and Min. They are the maximum and minimum values on the displayed chart. While you press down key to change the chart time scale, these value update as well.

Display Backlight
By pressing any key can activate the backlight for 30 seconds to help you operate in dark environment.

Auto Detect Day/Night
In greenhouse application, CO2 control is not necessary while light is weak. The built-in Photo-Cell sensor in CO2 sensing probe can automatically detect whether it is Day (above 60 Lux) or Night(less than 20Lux). It can override the CO2 control and shut off the CO2 generator by turning off the output power during the night. Conversely, if the Photo-Cell detects light (>60Lux) and the CO2 level is consistently low for 30 seconds, the device will start the CO2 generator by turning on output power. Above auto detect Day/Night function is ignored while users pick up ” Human” mode in advanced setting. With auto detection is ignored, the relay output control is only decided by CO2 value, only. Day or Night has no influence on it

Output Control
Output power is on when CO2 value is lower Set Center-(1/2) Set zone, and off when CO2 concentration is above Set Center+(½) Set zone. For example, if the Set Center is 1200ppm, and the Set zone is 400ppm, the output power will shut off when CO2 over 1200+ (1/2)*(400)=1400pm, and power on when CO2 below 1200-(½)*(400)= 1000ppm. Above output control pattern is opposite while users pick up ” Human” mode in advanced setting. You can check from display to know the existing setting is Human or Plant . In Human mode, if the Set Center is 1200ppm, and the Set zone is 400ppm,
the output power will turn on when CO2 over 1200+ (1/2)* (400)=1400ppm, and shut off when CO2 is below 1200-(½)*(400)=1000ppm.

Target Zone indicator
From displayed chart, users can easily know whether the current CO2 reading is the controlling target zone or not by checking the chart. Target zone is indicated by triangle icons. For example, below picture shows the max. & min value of this time scale in last 85 seconds is 626ppm and 542ppm and it is all in controlling target zone.

Buzzer Alarm
Buzzer alarm default as OFF (icon ) . You may go for setup mode to turn the buzzer alarm function on icon ). While the buzzer is on, it beeps when CO2 value is over Set Center+ Set zone, and off when CO2 concentration is below Set Center+Set zone. For example, if the Set Center is 1200pm, and the Set zone is 400ppm, the beep will start when CO2 is over 1200+400=1600ppm, and buzzer off when CO2 is below 1600pm. Above high alarm buzzer working pattern is applied to both Plant & Human mode.

SETUP

In setup mode, if none of the keys are pressed within 1 min, the device will automatically return to normal status.

CENTER

ZONE

Note: One short cut for users to revert the Center and Zone to 1200& 400ppm : In normal mode, press for 3 secs till an audible beep and LCD should show ” Back Home Done”

RE-CALI
While the accuracy of this device is a concern, you may use this function to calibrate this device with outdoor fresh atmospheric air in ~400ppm condition. It is suggested to do calibration in sunny day to ensure the fresh air is closed to 400ppm. Leave the sensor in outdoor fresh air for 20 mins before you want to start the calibration. When entering setup mode, press kevs to select “Re-CALI”. then hold
for 3 seconds until a beep and the chart will read “Calibration”. Leave the sensor in outdoor fresh air for 20 mins to complete the calibration. To escape, press
to terminate without saving. Make sure the device is far away from CO2 source, not in direct sunlight, and not exposed to water.

Note:
The meter is calibrated at standard 400ppm CO2 concentration in factory.

Do not calibrate the meter in the air with unknown CO2 level. Otherwise, it will be taken as 400ppm and leads to inaccurate measurements.

ADV(advance)

The last function in setup mode is called advance setting which allows you to customize your controller with more flexibility, includes: 1. buzzer alarm on/off, 2. CO2 altitude (pressure) compensation,3. choose relay output to Human or 4. Plant mode, 5.restore to factory default status.

TROUBLE SHOOTING

? Can’t power on
Check whether the power is well plugged.
Check whether the fuse is damaged

? Slow response
Check whether the air flow channels on the sensing probe is blocked.

? CO2 reading is “Hi”
Means the measured value is higher than 5000ppm. Remove the sensor to fresh air to revert it to normal display.

? Error messages

Err4, means IR lamp error Please reconnect power adapter
Err5, means Internal parameter error
Please reconnect power adapter
Err6, means Communication error
Please reconnect sensor unit If above methods to release Err4 ~ 6 are not working, please contact the shop where you purchased device from for service.

SPECIFICATION

WARRANTY
The meter is warranted to be free from defects in material and workmanship for a period of one year from the date of purchase. This warranty covers normal operation and does not cover misuse, abuse, alteration, neglect, improper maintenance, or damage resulting from leaking batteries. Proof of purchase is required for warranty repairs. Warranty is void if the meter has been opened.

RETURN AUTHORIZATION
Authorization must be obtained from the supplier before returning items for any reason. When requiring a RA (Return Authorization), please include data regarding the defective reason, the meters
are to be returned along with good packing to prevent any damage in delivery and insured against possible damage or loss.

OTHER RELATED PRODUCTS
Other related COz products:

Model 7752 portable Temp./CO2 meter, general purpose.
Model 77532 portable Temp./CO2 meter, high performance.

Model 7755 portable Temp./RH/CO2 meter, general purpose.
Model 77535 portable Temp./RH/CO2 meter, high performance.

Appendix

Dimension:
Dia.5 x 20(L) mm
FUSE SPECIFICATION

Amp code: 1600
Rated Current: 6.00A
Max. Voltage:300 VAC
300 VDC

Max. Voltage Drop: 150 mV
Breaking Capacity: 3kA@300V AC
3KA@300V DC
Typical Pre-arcing 12t (A*Sec):30

Location:
The fuse is on the PCB. Please unscrew 7 screws on the back side of meter then you can find the fuse as shown.

CO2 LEVELS AND GUIDELINES

Plant
This CO2 is default as 1200ppm for Target Zone (center) value and 1200ppm is suitable for most application. However, you still can adjust center and zone value to customize a best controlling output for your plant!

CO2 LEVELS AND GUIDELINES
Non-Enforced Reference levels
NIOSH recommendations

250-350ppm: normal outdoor ambient concentrations 600pm: minimal air quality complaints
600-1000ppm: less clearly interpreted
1000ppm: indicates inadequate ventilation; complaints such as headaches, fatigue and eye/throat irritation will be more widespread. 1000pm should be used as an upper limit for indoor levels.

EPA Taiwan: 600ppm and 1000ppm
Type 1 indoor areas such as department stores, theaters, restaurants, libraries, the accentable CO, concentration of 8 hours avarge is 1000ppm.
Type 2 indoor areas with special requirements of good air quality such as schools, hospitals, day care centers, the suggested CO2 level is 600ppm.

Regulatory exposure limit
ASHRAE Standard 62-1989: 1000ppm CO2 concentration in occupied building should not exceed 1000ppm.
Building bulletin 101 (BB101): 1500ppm UK standards for schools say that CO2 at averaged over the whole day i.e. 9am to 3.30 pm) should not exceed 1500ppm.
OSHA: 5000ppm
Time weighted average over five 8-hour work days should not exceed 5000ppm.
Germany, Japan, Australia, UK…: 5000ppm 8 hours weighted average in occupational exposure limit is 5000pm.

Accuracy, the Zenith of Measuring / Testing Instruments!

Hygrometer/Psychrometer

Thermometer
Anemometer
Sound Level Meter

Air Flow meter
Infrared Thermometer
K type Thermometer

K.J.T. type Thermometer
K.J.T.R.S.E. type Thermometer
pH Meter

Conductivity Meter
T.D.S. Meter
D.O. Meter

Saccharimeter
Manometer
Tacho Meter

Lux / Light Meter
Moisture Meter
Data logger

Temp./RH transmitter
Wireless Transmitter ……….

More products available!

Documents / Resources

AZ 7530-US Controller with External Sensor [pdf] Instruction Manual
7530-US Controller with External Sensor, 7530-US, Controller with External Sensor, External Sensor, Sensor

References

User Manual