TRAMEX IRT2DP User manual

IRT2DP
Dual Laser IR
Thermometer and
Dew Point Detector
USER GUIDE

TABLE OF CONTENTS
Introduction
Key Features
Operating Instructions
- On / Off
- Switching Cº/Fº
- Audio Signal On/Off
- Front Panel Controls and Indicators
- Laser Beam / Backlight
- Mode
• Surface Temperature & Dew Point (DP)
• Surface Temperature & Ambient Temperature (AT)
• Surface Temperature & Relative Humidity (RH)
- Measurement Operation - General
Battery replacement
Maintenance
Safety Instructions
Specifications
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INTRODUCTION
The IRT2DP is a handheld dual laser, non-contact
Infrared Thermometer and Dew Point detector with
20:1 distance to spot ratio, tricolor light (and audible)
indication as reading goes close to dew point tempera-
ture. It is used to measure surface temperature along
with relative humidity, dew point temperature and
ambient temperature.
The temperature range is -50°C to 380°C (-58ºF to
716ºF) and has an accuracy of approximately 1 to
1.5%. The humidity range is from 0 – 100% RH. The
dew point temperature range is -30º to 100ºC (-22º
to 212ºF) (see Specifications for details). The IRT2DP
has a fast response time (0.15 sec) and is powered with
a 9V battery and complies with Class II UK/EU laser
safety standard EN60285.
KEY FEATURES
• Rapid detection function
• Precise non-contact measurements
• Dual laser targeting
• 3 Mode display - Relative Humidity / Dew Point
Temperature / Ambient Temperature
• Green - Yellow – Red LED light and audible signal
indicate proximity to Dew Point Temperature
• Automatic Data Hold
• User selectable ºC or ºF
• Pre-set Emissivity of 0.95
• Backlight LCD display
• Unique flat surface, modern housing design
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OPERATING INSTRUCTIONS
1. Switch Button – automatically switch off at about 15
minutes
2. Backlight/ Laser Button
3. Mode Button - Surface temperature with RH, Dew
Point or AmbientTemperature.
4. ºC/ºF & Audio On/Off Button
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ON / OFF
• Press the measurement trigger once to turn ON.
• Press the measurement trigger again to turn OFF
SWITCHING ºC/ºF
• Select the temperature units (ºC or ºF) pressing
once the ºC/ºF button.
AUDIO SIGNAL ON/OFF
• Press the ºC/ºF button for 3 seconds to turn On
or Off the audio signal.
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FRONT PANEL INDICATORS
1. DP: Dew Point
2. AT: Ambient Temperature
3. RH: Relative Humidity
4. Laser ON symbols
5. Low Battery Indication
6. %RH Indicator bar / Proximity to dew point indicator
bar
7. Emissivity symbol and value
8. ºC/ºF symbol
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LASER BEAM / BACKLIGHT Button
The dual laser beam and screen backlight will remain ON /
OFF as selected in the last time used.
Scroll through the options by pressing the laser beam /
backlight button:
• laser beam OFF / backlight OFF
• laser beam ON / backlight OFF
• laser beam ON / backlight ON
• laser beam OFF / backlight ON
MODE
After switch on, the instrument will be in the same mode
as the last time used. It will detect and display the surface
temperature, with either
• dew point temperature (DP),
• ambient temperature (AT) or
• relative humidity (RH),
as chosen using the MODE button.
Press the MODE button to scroll between the display of
• ambient temperature,
• dew point temperature and
• relative humidity.
The mode and their values are displayed on the top of the
LCD screen.
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MEASUREMENT OPERATION - GENERAL
Aim the instrument at the object being measured, moving
the detector slowly. The surface temperature of the
object is displayed at the bottom of the LCD screen.
If the measured surface temperature value is between the
ambient temperature and dew point temperature values,
the IRT2DP will calculate the D-value / Delta-value with
the ambient temperature.
Green Light
If the measured surface temperature is within 1/3 range
of ambient temperature to dew point temperature, the
green light indicates that the temperature and humidity
are normal.
Yellow Light
If the measured surface temperature is within the 2/3
range of ambient temperature to dew point temperature,
the yellow light and intermittent audio signal indicate
surface temperature is approaching dew point and that
the conditions may produce surface condensation or may
be conducive to mildew growth.
Red Light
If the measured surface temperature exceeds the 2/3
range of ambient temperature to dew point temperature,
the red light and continuous audio signal indicate surface
temperature is close to or has reached dew point and
that the conditions are likely to or already have produced
condensation or that there may already be mildew growth.
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For example:
If the measured environment temperature is 25ºC, rela-
tive humidity is 50%, dew point is 13.8ºC, then:
Green light: when the measured surface temperature is
between 77ºF (25ºC) - 70.3ºF (21.3ºC);
Yellow light: when the measured surface temperature is
between 70.2ºF (21.2ºC) - 63.5ºF (17.5ºC);
Red light: when the measured surface temperature is
between 63.4ºF (17.4ºC) - 56.8ºF (13.8ºC).
NOTE - CONCRETE MOISTURE AND DEW POINT
It is recommended that the temperature of the surface
of the concrete should be at least 10ºF (5ºC) above the
ambient dew point temperature at the time of installation
so as to avoid condensation related issues.
BATTERY REPLACEMENT
• When battery power is not sufficient, LCD will
display replacement with one new battery type 9V
is required.
• Open battery cover, take the battery out of the
instrument and replace with a new 9-Volt battery,
then replace the battery cover.
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MAINTENANCE
Clean the lens often, but never use a solvent. Abrupt
temperature changes will cause condensation and
possible vapor penetration.
Clean after the vapor evaporates. Blow off loose parti-
cles with clean, compressed air. Gently brush remaining
debris away with a lens hair brush. Carefully wipe the
surface with a moist cotton swab.
Avoid water, moisture and corrosive gas or liquids.The
housing can be cleaned with a damp sponge.
Remove the battery when storing this product for an
extended period of time.
Do not drop or disassemble the instrument or immerse
it in water.
Repairs or service are not covered in this manual and
should only be carried out by qualified trained tech-
nician. For service, use only manufacturer’s specified
parts.
SAFETY INSTRUCTIONS
• Keep this instrument out of the reach of children.
• Do not point laser near or into eyes.
• Do not stare at the laser beam through binoculars
or a magnifying glass!
• Do not operate this instrument in the presence of
flammable/explosive gases!
• Do not operate in environments full of dust or
static electricity.
• Do not operate near sources of strong electro-
magnetic fields, such as arc welders or induction
heaters.
Finally, be aware that it is an offence to point a laser
beam at aircraft.
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SPECIFICATIONS
Temperature Range: 50°C to 380°C (-58ºF to
716ºF)
Display resolution: 0.1
Emissivity: Fixed at 0.95
Temperature accuracy: -50º to 20ºC / -58º to
32ºF: +/- 3.5ºC
20º to 380 ºC / 32º to
716ºF: +/-1.5ºC
Wavelength range: 8 – 14um
Humidity Range: 0 - 100% RH
Humidity accuracy: +/-3.5% (20% to 80%)
Dew point temperature: (-30 to 100)ºC / (-22 to
212)ºF
D:S: 20:1
Operating temp: 0 to 50ºC (32 to 122ºF)
Storage temp: -10 to 60ºC (-4 to 140ºF)
Relative humidity: 10%-90%RH operating,
<80%RH storage
Power Supply: 9V battery, NEDA 1604A
or IEC 6LR61, or
equivalent
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