Sper scientific 800111 User manual

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IR Thermometer
with Dewpoint
800111
Instruction Manual

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TABLE OF CONTENTS
INTRODUCTION ........................................................3
FEATURES..................................................................4
MATERIALS SUPPLIED ............................................4
CARE AND MAINTENANCE......................................4
FRONT PANEL DESCRIPTION.................................5
LCD DISPLAY .............................................................6
SET UP........................................................................7
MEASUREMENT PROCEDURES.............................8
SPECIFICATIONS ....................................................11
WARRANTY ..............................................................12

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INTRODUCTION
The Sper Scientic IR Thermometer with Dewpoint
(800111) allows residential and commercial consumers
to quickly detect areas prone to mildew growth with
a simple scanning motion. Aim the thermometer
at questionable areas and view the large multi-line
backlit LCD display. The automatic color-coded light
alerts the user of areas prone to mold and mildew
growth. This all-in-one unit not only measures ambient
air characteristics such as air temperature, relative
humidity, and dewpoint, but it also measures the
surface temperature using infrared technology with
Dual-point lasers and emissivity xed at 0.95. This
clever device then compares the surface temperature
to the air conditions to accurately predict the possibility
of condensation on that surface. The optional audible
alarm has distinctive sounds to indicate increasing
moisture levels during the scan and also has a hold
function to freeze readings on the screen. Comes
complete with carrying case, 9V battery, and instruction
manual.

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FEATURES
Color-coded LCD Display
Separate Color-coded warning light
Audible warning alarm
Hold Function
Measures in °F or °C
MATERIALS SUPPLIED
IR Thermometer with Dewpoint
Carrying Case
9V battery
Instruction manual
CARE AND MAINTENANCE
Wipe the thermometer with a nonabrasive cloth. Do not
use solvents on the thermometer.
Never store the thermometer in a wet case.
Repairs or services not covered in this manual should be
performed by qualied personnel only. Please contact
Sper Scientic to speak with a technician.

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FRONT PANEL DESCRIPTION
1. POWER
2. MODE
3. TEMPERATURE UNIT °C/°F
4. TRI-COLORED ALERT LIGHT
5. TRIGGER/HOLD

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LCD DISPLAY
1. Current Emissivity
2. Audible Alarm Activated
3. Hold Function Activated
4. Dewpoint
5. Air Temperature
6. IR Laser Guide Activated
7. Low Battery Indicator
8. Relative Humidity
9. °F or °C units
10. D-value Bar graph
11. Surface Temperature (IR) Reading

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SETUP
Battery Installation
This thermometer uses one 9V battery. To install the
battery before rst use:
1. Flip open the battery cover, located on the hand
grip, using one of the two nger tabs.
2. Carefully install a 9V battery into the snap closure,
ensuring correct polarity.
3. Tuck the battery back into the handle without
pinching the wires.
4. Flip the battery cover closed.
Replace the batteries when the low-battery icon
appears on the LCD.
Note…Before replacing the batteries, turn the
thermometer o󰀨.
Turning the Thermometer on and o󰀨
1. Press to turn the meter on.
2. Press again to turn the meter o󰀨.
Changing the Unit of Measure:
1. Turn the thermometer on.
2. Press °C/°F to toggle between °F and °C.

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Setting the Audible Alarm
1. Press and hold °C/°F to turn the audible alarm on/o󰀨.
2. The icon will appear on the screen to indicate that
the audible alarm is underway.
Note: The audible alarm sounds in a pulse format during the
amber warning and continuously during the red warning.
Backlight
The backlight of this thermometer is always on when
the power is on.
Measurement Procedures
1. Hold the IR thermometer in a manner that does
not block the top of the barrel. This is important
because the ambient air temperature and humidity
sensor is located there. Blocking it will produce
inaccurate results.
2. Aim the dual laser indicators at an area of interest
to measure surface temperature.
3. Read the surface temperature from the bottom
number of the LCD screen. The IR surface
temperature will always be the bottom number.
4. To compare this surface temperature to the conditions
in the room, toggle through the ambient conditions
by pressing MODE. This will display Air Temperature
(AT), Relative humidity (%RH), and Dew Point (DP).

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5. To hold value of interest on the LCD, press the
trigger. This will allow you to move away from the
object while the screen will still contain the data.
*Note: while HOLD is underway, the audible alarm will
stop. The red indicator will remain lit according to its
moisture level.
6. If you are uncertain of the areas where moisture
may be present, you can sweep the room with the
thermometer and observe the D-Value bar graph on
the right-hand side of the LCD. This will give you an
estimate increasing risk of moisture levels. Scanning
of a room is done in a sweeping motion without
pressing the trigger. Pressing the trigger by mistake
will activate the hold function and cause no readings
to occur.
7. Use the color chart on the next page for reference to
possible moisture conditions.

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Light
Color
Alarm type D-Value* Moisture
Possibilities
Green None Surface temp. is
greater than 1/3
of the di󰀨erence
between the air
temperature and
the dew point.
Presence of
moisture is not
likely
Orange Repeating
alert
Surface temp. is
between 1/3 and
2/3 of the
di󰀨erence
between the air
temperature and
the dew point.
Conditions
are favorable to
moisture collecting
on the surface in
question.
Red Single tone
constant
alert
Surface temp. is
lower than 2/3
of the di󰀨erence
between the air
temperature and
the dewpoint.
Moisture may be
present on the
surface.
Corrections
to remedy the
moisture situation
should be
performed.
*Note: The D-Value helps to indicate the likelihood of condensa-
tion, because if any surface temperature matches the dew point
in a room, liquid will generate on that surface. So, D-Values
describe this situation as a percent of likelihood. As the surface
temperature approaches the dewpoint within the current ambient
air temperature and humidity settings the d-value approaches the
point of condensation.