Sper scientific 800046 User manual
Indoor Air Quality Meter
800046
Instruction Manual
TABLE OF CONTENTS
Introduction 3
Features 4
Power Supply 5
LCD Display 6
Keypad 7
Measurement Procedures 8-12
CO2 Calibration 13
RH Calibration 14-15
Troubleshooting 16
PC Connection 17
CO2 Levels and Guidelines 18
Specifications 19
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Poor air quality may cause tiredness, inability to
concentrate, and even illness (i.e., Sick Building
Syndrome). This instrument is ideal for monitoring indoor air
quality in crowded public spaces with potentially high levels
of CO2(carbon dioxide) such as offices, factories,
classrooms, hospitals and hotels. The same measurement
parameters can also be used to test air from HVAC
equipment.
Simultaneously backlit display of CO2(carbon dioxide)
level, humidity and air temperature, or the user may choose
a rotating display of dew point and wet bulb temperature
instead of air temperature. Also calculates TWA (Time
Weighted Average) and STEL (Short-Term Exposure Limit).
Simple user calibration of CO2and RH. Features audible
C02threshold alarms, min/max/ave, hold and a USB
computer interface. NDIR (non-dispersive infrared)
technology ensures long-term accuracy, stability and
reliability.
INTRODUCTION
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FEATURES
Triple display of CO2 level, temperature and humidity
Stable NDIR sensor for CO2detection
Backlight for working in dark areas
Audible CO2 warning alarm
Battery and adapter power supply
Easy manual calibration of CO2 and humidity
PC connect via USB serial interface
Statistics of weighted averages
- TWA (8 hours weighted average)
- STEL (15 minutes weighted average)
Meter
4 AA Alkaline Batteries
Instruction Manual
Hard Carrying Case
MATERIALS SUPPLIED
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POWER SUPPLY
The unit is powered by either 4 AA Alkaline Batteries
or an optional AC adapter (9V/1A output).
Battery Installation
1. Install the batteries into the battery compartment located
at the bottom-rear of the unit by pressing downward on
the battery compartment door’s locking-hinge and
remove the cover.
2. Install 4 AA Alkaline Batteries ensuring the polarity is
correct and the batteries are firmly seated.
3. Re-install the cover and ensure it snaps securely into
place.
Note…
When the AC Adapter is used, power supplied from the
batteries is disabled. The adapter does not charge the
batteries.
When the battery voltage is low, , Lob appears on LCD
and an alarm sounds. Under low battery conditions, the
meter’s CO2 sensor will not function properly, readings are
not displayed, and an audible beep indicates a failed CO2
measurement (press any key except the SET key to disable
the audible beeps). Replace the batteries or connect the
meter to the AC adapter.
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LCD DISPLAY
LCD Symbols
TWA
STEL
HOLD
MIN/MAX
DP
AIR
WBT
%
°E (C/F)
AVG/ftm/m/s
Time weighted average (8 hours)
Short-term exposure limit
(15 minutes weighted average)
Readings are frozen
Minimum/Maximum readings
Low battery indicator
Dew point temperature
Air temperature
Wet bulb temperature
Relative humidity
Celsius/Fahrenheit
Measurement icons
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KEYPAD
Keypad functionality is defined as follows:
Turns meter On and Off.
Enters Setup mode.
Sets Non-Sleep mode with .
Exits Setup Page mode.
Enters CO2 calibration with .
Enters RH calibration with .
Freezes current readings.
Turns LCD Backlight On and Off.
Selects unit or increases Setup value.
Selects AIR, DP, or WBT temperature
displays.
Selects unit or decreases Setup value.
Activates MIN, MAX, STEL, and TWA
functions.
Saves settings.
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MEASUREMENT PROCEDURES
Air, Dew Point and Wet Bulb Temperature
Press SET to turn the meter on and off. The meter emits a
short beep, performs a 30-second countdown and then
displays current CO2, temperatures and humidity readings.
The meter starts acquiring measurements and updates its
readings every second. In environments where conditions
change (i.e., from low to high temperature), it takes the
meter’s sensor 30-seconds to respond for CO2 and 30
minutes for RH.
Note…
Do not hold the meter close to your face while taking
measurements because exhaling affects CO2levels.
Power On/Off
Press DP/WBT to switch temperature modes. The lower left
of the LCD display cycles from air temperature to dew point
temperature to wet bulb temperature.
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1. Press MODE for more than one second to turn the back-
light on/off.
MEASUREMENT PROCEDURES
Data Hold
1. Press HOLD to freeze readings. The “HOLD” icon will
appear in the left-top corner of the LCD. All current
readings are frozen, except STEL and TWA.
2. Press HOLD again to cancel the “HOLD” function and
resume measurement.
Backlight
Minimum, Maximum, Short-Term Exposure Limit and
Time Weighted Average
1. While in Normal mode, press MN/MX/AV to view min-
imum, maximum, and weighted average readings.
2. Press MN/MX/AV to display MIN, MAX, STEL, and TWA
readings in sequence and then return to Normal mode.
3. In MIN and MAX modes, the unit displays minimum and
maximum CO2 readings on the upper LCD and the AIR
and Dpor WB temperatures and humidity on the lower
LCD.
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MEASUREMENT PROCEDURES
4. In STEL and TWA modes, the main display indicates the
weighted average of CO2readings for the previous 15
minutes (STEL) and 8 hours (TWA). The lower displays
are current AIR, DP/WB temperatures and humidity.
Note…
When the meter is turned on for a period shorter than 15
minutes, STEL value readings will indicate the weighted
average of readings sampled since the unit was turned on.
This rule also applies to TWA when the meter is on for a
period shorter than 8 hours.
It takes at least 5 minutes to calculate STEL and TWA
readings. During the first 5 minutes, the LCD displays
“----.”
While all readings are frozen, STEL and TWA are updated
every 5 minutes.
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