az-instrument 7530-US User manual

OPERATION MANUAL
CO CONTROLLER
2
WITH EXTERNAL SENSOR
Model:
7530-US
USA type
piggyback
EU&UK type
7530-EU
7530-UK

INTRODUCTION
Features:
1
Thank you for purchasing this wall mount
CO controller. An external CO2sensing
2
probe is included to help you measure
CO level in a closed space. This CO
2 2
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 CO
2
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.
Accurate 2-Channel low drift NDIR CO
2
measuring
External CO sensor to be used in a
2
closed space
Display real time CO value
2
Display CO chart with adjustable time
2
scale (week/day/hour/min/auto)
Auto Max. /Min. Recall on CO chart
2
Programmable CO zone value & CO
2 2
center value to control output power
on/off
Audible alarm warns CO concentration
2
Target zone indicator on CO chart
2
Built-in Day/Night auto detection on
CO probe to override CO control
2 2
Backlight to assist operation in dark
place
Monitoring& Controlling CO value in
2
Green house, residential and
commercial building

Meter (controller+sensing)
Operation manual
Paper box
Screws and tape
This package contains:
2
MATERIAL SUPPLIED
POWER SUPPLY
AC100~240VAC
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 type
plug, the power coil
& output coil are
separated.
.
EU&UK type
PLACEMENT
An external CO2sensing probe is
included to help you measure CO
2
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.

3
SAFETY FUSE
The meter is powered by AC100~240
VAC directly and provide power through
piggyback socket or EU/UK 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.
Enter setup mode.
Select mode or increase value in
calibration and setup.
Change time scale. Select mode
or decrease value in calibration
and setup.
KEYPAD& LED INDICATOR
MENU
ENTER
Save and finish settings.
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

4
OPERATION
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.
POWER ON
LCD DISPLY
Max of displayed chart
MIN Min of displayed chart
Beeper alarm on/off indicator
Zone Z
Center C
PPM C
Time scale Chart time scale. Includes
week, day, hour, min, auto
Target Zone
CO Chart CO trend in graphic
2 2
Max
Buzzer one value for relay control
enter value for relay control
CO urrent CO value
2 2
Controlling zone indicator
ADV Advanced setting to customize
your CO controller
2
RE-CALI Operate to do CO2 calibration
Plant mode or Human mode

5
TAKING MEASUREMENT
The meter starts taking measurement
after power on and updates readings
every second. 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 CO change. Do not hold the sensing
2
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:
Time Span
Time per
division
1min
1hour
1day
1week
Auto cycle
5sec/div
5 min/div
2 hour/div
0.5 day/div
Cycle above
Using to
toggle the
available time
scale. When
you choose auto
cycle, you will
see “ “ on
LCD and time
scale exchange
every 20 sec.
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

Auto Detect Day/Night
In greenhouse application, CO2 control
is not necessary while light is weak.
The built-in Photo-Cell sensor in
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)=1400ppm, and power on
when CO2 below 1200-(½)*(400)=
1000ppm.
CO2
sensing probe
Above output control pattern is opposite
6
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.

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 1200ppm, and the
Set zone is 400ppm, the beep will start
when CO2 is over 1200+400=1600ppm,
and buzzer off when CO2 is below
1600ppm.
Above high alarm buzzer working pattern
is applied to both Plant & Human mode.
7

8
CENTER
When entering setup mode, press
to enter “Center” value setup. The
default value is 1200ppm for general
plant. Press or to change
the value and it is 50ppm/step. Then,
press again to confirm it.
SETUP
Hold key under normal mode to enter
setup mode.
Press key to choose the necessary
setup function and then press to
enter.
To exit setup, press key four times
till it returns to normal mode. “Center”,
“Zone”, “Re-CALI”, “ADV” and then
return to normal display is a complete
cycle of setup function.
In setup mode, if none of the keys are
pressed within 1 min, the device will
automatically return to normal status.
MENU
MENU
ENTER
MENU
ENTER
ENTER
ZONE
When entering setup mode, press
to enter “Zone” value setup. The
default value is 400ppm for general
purpose. Press or to change
the value and it is 10ppm/step. Then,
press again to confirm it.
ENTER
ENTER

9
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.
When entering setup mode, press keys
to select “Re-CALI”, then hold for
3 seconds unitl a beep and the chart will
read “Calibration”. Leave the sensor in
outdoor fresh air for 20 mins to complete
the calibration.
ENTER
ENTER
Do not calibrate the meter in the air
with unknown CO level. Otherwise, it
2
will be taken as 400ppm and leads to
inaccurate measurements.
Note:
The meter is calibrated at standard
400ppm CO concentration in factory.
2
.
Note:
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.
MENU

10
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.
Press keys to select “ADV”, then press
to enter. In ADV, press or
to select Buzzer, Altitude, Restore or
Human/Plant.
To enter Buzzer, press and then use
or to turn on/off buzzer alarm.
The default is off.
To enter Altitude, press and then use
or to adjust. The range is 50M to
to 5000Meter. 50M/step.
To select Plant, you will see plant icon
is flashing, press to confirm.
Now, your relay output will be activated
while Co2 value is lower than threshold.
To select Human, you will see human
icon is flashing, press to confirm.
Now, your relay output will be activated
while CO2 value is too high.
To restore to factory default, press and
hold for 3 seconds till an audible
beep. Now, all Center/Zone/Chart time/
Calibrate/Altitude will all restore to 1200
ppm/400ppm/1Day and 0M.
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER

11
? Error messages
? Can’t power on
Check whether the power is well
plugged.
Check whether the fuse is damaged
TROUBLE SHOOTING
? 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.
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
7530
Model
Measuring range 0~5000 ppm
CO2
Resolution 1ppm (0-1000); 5ppm (1000-2000); 10ppm (>2000)
Accuracy
CO2 below 3000ppm
Co2 above 3000ppm ±50ppm or ±5% of reading, whichever is greater
30 seconds
Warm-up time
Response time
CO2
Operating condition
Storage condition
Power supply
Sensor size
Weight
Standard package
<2min for 63% of step change or
<4.6min for 90% step change
o
0~50 C , 5~95% RH (avoid condensation)
o
-20~ 60 C,5~95%RH(avoid condensation)
AC100~240VAC
124 x 33 x 26 mm
700g
Sensor, controller, manual, screws
±7% of reading
Piggyback socket load 5A@250VAC; 10A@120VAC
LCD size
Meter size 158 x 106 x 50 mm
47 x 104 mm

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
OTHER RELATED PRODUCTS
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 CO products:
2
a. Model 7752 portable Temp./CO meter,
2
general purpose.
b. Model 77532 portable Temp./CO
2
meter, high performance.
c. Model 7755 portable Temp./RH/CO
2
meter, general purpose.
d. Model 77535 portable Temp./RH/CO
2
meter, high performance.
12

CO2LEVELS AND GUIDELINES
Plant
Appendix
FUSE SPECIFICATION
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!
13
Dimension:
Dia.5 x 20(L) mm
-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
2
-Typical Pre-arcing I2t (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.

CO2LEVELS AND GUIDELINES
EPA Taiwan: 600ppm and 1000ppm
Type 1 indoor areas such as department
stores, theaters, restaurants, libraries,
the acceptable CO2concentration 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 CO2level is 600ppm.
14
NIOSH recommendations
250-350ppm: normal outdoor ambient
concentrations
600ppm: 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. 1000ppm
should be used as an upper limit
for indoor levels.
Non-Enforced Reference levels
Regulatory exposure limit
ASHRAE Standard 62-1989: 1000ppm
CO2concentration in occupied building should
not exceed 1000ppm.
Building bulletin 101 (BB101):
UK standards for schools say that CO2at
1500ppm
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 5000ppm.
Appendix

Accuracy, the Zenith of
Measuring / Testing Instruments !
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2018/01 Ver2