Ponpe 7798 User manual

OPERATION MANUAL
DESKTOP
CARBON DIOXIDE (CO2)
LOGGER
Model:
7798

INTRODUCTION
Features:
Super large display of CO level, temp.,
2
humidity, date and time.
15 degree tilt angle. Easy to see and
read..
Indoor air quality level
(Good, Normal, Poor) .
.
indication.
Stable NDIR sensor for CO detection
2
Visible and audile CO warning alarm
2
ABC(Automatic Baseline Calibration)
and manual CO calibration.
2
Max. & Min. CO value recall function
2
Data logging up to 15999 points.
Sampling rate from 1 second to 4:59:59.
1
Thank you for purchasing this desktop
CO mo nitor & datalogger. It measures
2
CO level, air temp erature, humi dity and
2
also do datalogging, which is an ideal
instrume nt for indoor air quality (IAQ)
diagnosis and HVAC system performa nce
verification.
Poor indoor air quality is considered
unhealthy because it causes tiredness,
loss of ability to concentrate, and even
illness(ex. Sick Building Syndrome ). IAQ
monitoring and survey, especially on CO
2
level and air ventilation become widely
applied in public areas such as offices,
classrooms , factories, hospitals, day care
centers and hotels. It is also suggested
in regulations of industrial hygiene in
some countries. (See appendix)

MATERIAL SUPPLIED
Meter
Universal adaptor (5V+10%, >=0.5A)
USB cable
Download software CD
Operation manual
Plain white box
This package contains:
POWER SUPPLY
The meter is powered by an AC adaptor
(5V/0.5A output).
2
LCD DISPLAY
ppm The scale of the value
GOOD is in good level
NORMAL
Air Temp. Air temperature
Humidity % Unit of air relative humidity
oE (C/F) Celsius/Fahrenheit of temp.
Icon of CO2 alarm
NOTE: TWA/STEL/VENT.R/cfm/p/lps% are
vain icons in this model.
CO2
CO2
CO is in normal level
2
POOR CO is in poor level
2
MAX/MIN Maximun/Minimum readings
CO2
concentration
in ppm
Relative
humidity in %
Air temp.
o
in C or F
o
Symbols
o
MAX
MIN
TWA
STEL
CO2
Humi di ty
Air Temp. DP WB
GOOD NORMAL POOR
VENT.R
lps
%
cfm/ p
ppm
Year Month Dat e
Hour Mi n
Real time
clock/
Calendar
AM
PM

3
-Enter setup mode.
-Save and finish settings.
-Exit setup page / mode.
-
-Press to clear the MAX/MIN records.
-Activate MAX, MIN function.
-Select mode or decrease value in
setup.
KEYPAD
OPERATION
Plug the adaptor and the meter turns
on automatically with a short beep. The
LED lit to indicate full power.
If the voltage is too high or low, “ bAt “
will display on LCD and LED will flash.
Please see page14 for trouble shooting.
The LCD will display current CO , temp.,
2
humidity, date and time. The air quality
level is displayed as well (Fig.1).
Fig. 1
POWER ON/OFF
SET
ESC
-Terminate calibration / datalogging
RESET
-Select mode or increase value in setup
-Start data logging
MIN/MAX
+-Enter CO calibration.
2
o
CO2
Humi di ty
Air Temp.
GOOD
ppm
Year Month Date
Hour Mi n
PM
MIN/MAX
+
SET
LOG/

4
TAKING MEASUREMENT
The meter starts taking measurement
after turned on and updates readings
every second. In case of operating
environment changed (ex. From high
to low temp.), it takes 2 mins to get the
response of CO /temp. change and 10
2
minutes for RH change.
NOTE: Do not hold the meter close to
faces in case that exhalation affects
CO levels.
2
Under normal mode, press “ “ to
see the minimum, maximum of each
parameter. Each press of “ “,
it displays MIN, MAX in sequence and
returns to normal mode.
In MIN and MAX modes, it shows the
minimum and maximum readings of
CO on main display and air temp. and
2
humidity on the lower displays. (Fig.2)
In MIN/MAX or normal operation modes,
press and hold “ “ key more than
1 second to clear the minimum and
maximum value and then re-start.
Fig.2
MAX,MIN
MIN/MAX
MIN/MAX
RESET
o
CO2
Humi di ty
Air Temp.
GOOD
ppm
Year Month Date
Hour Mi n
MIN
PM

5
The meter features audible alarm to
give warnings when CO concentration
2
exceeds the limits. Users can set up 2
limits: An limit for alarm threshold that
requires ventilation (See P1.3 in setup
for setting alarm limits) and a lower
limit to stop the ventilation system (See
P1.2 in setup CO2 normal limit).
ALARM
DATA LOGGING
The meter can record readings of CO2
, temperature and humidity for long time
environment monitoring. The memory
capacity is 15999 points. Users can set
up sampling rate from 1 second to 4
hours 59 minutes and 59 seconds
(See SETUP P5.0).
After sampling rate is selected, press
“ LOG/ ” for 2 seconds under normal
mode to start logging. The green LED
light blinks to indicate the logging status
and LCD main display shows the real
time CO2 value and “rEC” in turn. Lower
displays are the real time temperature,
humidity and clock.
To terminate data logging, press “ESC”
for 2 seconds, LED light stops blinking
and main display shows “End” and CO2
reading interchangeably. Hold down
“ESC” for 2 seconds again, and it goes
back to normal measurement mode.
Minimum and Maximum recall is still
working during logging.

6
SETUP
Hold down “ “ under normal mode
more than 3 sec to enter setup mode.
To exit setup, press “ “ in P1.0,
P2.0,P3.0, P4.0, and P5.0 and it returns
to normal mode.
SET
ESC
P1.1 CO GOOD LEVEL
2
When entering setup mode, P1.0 and
“CO2” (Fig.4) are displayed on the LCD.
Press “ “ again to go into P1.1 for
setting CO upper limit of GOOD level.
2
The current set value will be blinking
on LCD(Fig.5).
SET
The fan icon keeps flashing when beeps
are manually shut. It stops only when
readings fall under the lower limit
(Fig.3)
CO2
Humi di ty
Air Temp. DP WB
POOR
ppm
Year Month Date
o
Hour Mi n
Fig.3
PM
It emits beeps(Abt.80dB) with fan icon
on LCD when CO level goes over the
2
upper limit. Beeps can be stopped by
pressing any key or automatically stops
when CO reading falls under lower limit.
2
If the beep is temporarily shut, it will
sound again when readings fall under
lower limit and then go over the upper
limit again, or users can press “ “
for more than 1 second to re-activate it.
RESET

CO2
GOOD
Press “ LOG/ “ to increase or “ “ to
decrease the value. Each press tunes
100 ppm and the alarm range is from 0
to 700ppm.
7
When the preferred value is set, press
“ “ to go into P1.2 (Fig.6 ) for upper
limit setting of NORMAL level and confirm
P1.2 or press “ “ without saving and
return to P1.0.
MIN/MAX
SET
ESC
P1.2 CO NORMAL LEVEL
2
P1.2 is used to set CO upper limit of
2
NORMAL level. The current set value
will be blinking on LCD(Fig.6).
Press “ LOG/ “ to increase or “ “ to
decrease the value. Each press tunes
100 ppm and the alarm range is from
700 to 1000ppm.
When the preferred value is set, press
“ “ to confirm P1.2 and go into P1.3
(Fig.7) for alarm threshold setting. Or,
press “ “ without saving and return
to P1.0.
MIN/MAX
SET
ESC
CO2
CO2
NORMAL
Fig.4 Fig.5
Fig.6

P1.3 CO BEEP ALARM
2
P1.3 is used to set CO alarm threshold.
2
The current set value will be blinking on
LCD(Fig.7) when entering P1.3 page.
Press “LOG/ “ to increase or “ “ to
decrease the value. Each press tunes
100 ppm and the alarm range is from
1000 to 5000ppm.
When the preferred value is set, press
“ “ to confirm P1.3 and go into P1.4
(Fig.8). Or, press “ “ without saving
and return to P1.0.
MIN/MAX
SET
ESC
CAUTION:
It’s suggested to set up alarm value
within specification range that
accuracy is ensured. Out of spec
readings are only for reference and
not suitable to be used as alarm limits.
CO2
Fig.7
8
CO2
Fig.8
Press “ LOG/ “ in P1.0 to access P2.0
for setting up temperature scale(Fig.9).
Press “ “ and it goes into P2.1 with
o o
blinking C or F current set(Fig. 10) on
o
the lower middle display. To switch C
o
or F, press “ LOG/ “ or “ “. Then
press “ “ to save the setting or
press “ “ without saving and return
to P2.0
P2.0 TEMPERATURE SCALE
SET
MIN/MAX
SET
ESC

9
P3.0 REAL TIME CLOCK
Press “ LOG/ “ in P1.0 twice to access
P3.0 for setting up real time clock (Fig.
11). Press “ “ and it goes into P3.1
with blinking year set (Fig.12) on the
lower left display. To change the year,
press “LOG/ “ or “ “. Then press
“ “ to save the setting and then enter
P3.2 or press “ “ without saving and
return to P3.0
SET
MIN/MAX
SET
ESC
Press “ “ in P3.1 to access P3.2 and
current month set will blink. To change
the month, press “ LOG/ “ or “. “.
Then press “ “ to save the setting
and then enter P3.3 or press “ “
without saving and return to P3.0
MIN/MAX
SET
ESC
o
Fig.9 Fig.10
24 hour and 12 hour time displays are
both available in this meter.
SET
Repeat above to finish the setting of
P3.3 (Date),then press “ “ to save
the setting and then enter P3.4 or press
“ “ without saving and return to P3.0
SET
ESC
Year Mo nth Date
Hou r Min
Year Mo nth Date
Hou r Min
Fig.11 Fig.12
While in P3.4, the current time setting
(12 hour or 24 hour) will blink.(Fig.13)
To change the setting, press “ LOG/ “