wintact WT320 Infrared Thermometer Instruction Manual

WT320 Infrared Thermometer
**Instruction Manua
Version： WT320-EN-0

**

Introduction

This infrared thermometer is used for measuring the temperature of the object’s surface, which is applicable for various hot, hazardous or hard-to- reach objects without contact safely and quickly. This unit consists of Optics, a Temperature Sensor Signal amplifier, a Processing circuit, and an LCD Display. The Optics collected the infrared energy emitted by objects and focus it onto the Sensor. Then the sensor translates the energy into an electrical signal. This signal will be turned out to be digital shown on the LCD after the signal amplifier and processing circuit.

WARNING & CAUTIONS

1. Warning: To avoid the potential for causing harm to people, please pay attention to the following items:

1. . Do not point the laser directly at the eye or indirectly off reflective surfaces.
2. . The unit cannot measure through transparent surfaces such as glass or plastic. It will measure the surface temperature of these materials instead.
3. . Steam, dust, smoke, or other particles can prevent accurate measurement by obstructing the unit’s optics. Emissivity: Most organic materials and painted or oxidized surfaces have an emissivity of 0.95(preset in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate for this, adjust the units emissivity reading or cover the surface to be measured with masking tape or flat black paint. Measure the tape or painted surface when the tape or painted is the same temperature as the material underneath. E. Operation

2. Cautions: Infrared thermometer should be protected from the following:
   1). EMF (electromagnetic fields) from arc welders and induction heaters.
   2). Thermal shock (caused by large or abrupt ambient temperature changes allow 30 minutes for the unit to stabilize before use).
   3). Do not leave the unit on or near objects of high temperature.

Distance to spot size

1. When taking a measurement, pay attention to the Distance to Spot Size. As the Distance (D) from the target surface increases, the spot size (S) of the area measured by the
   the unit becomes larger.
   The Distance to a Spot size of the unit is 12:1(Figure 1).

2. Field of view:
   Make sure the target is larger than the unit’s spot size.
   The smaller the target the closer the measure distance.
   When accuracy is critical, make sure the target is at least twice as large as the spot size.

EMISSIVITY

Emissivity: Most organic materials and painted or oxidized surfaces have an emissivity of 0.95(preset in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate for this, adjust the unit’s emissivity reading or cover the surface to be measured with masking tape or flat black paint.
Measure the tape or painted surface when the tape or painted area is the same temperature as the material underneath.

Operation

1. Operating the unit: Figure 2
   1). Open the battery door and insert the battery.
   2). Pull the trigger to turn on the unit;
   3). Aim at the target surface and pull the trigger, then the temperature will be shown on the LCD.
   This unit is equipped with a laser, which is only used for aiming.

2. Locating a Hot Spot： Figure 3
   To find a hot spot, aim the thermometer outside of interest, then scan across with an up and down motion until you locate the hot spot.

LCD display & buttons

1. LCD display: Figure4
   A: data hold the icon
   B: scanning icon
   C: laser on icon
   D: backlight on an icon
   E: battery power icon
   F: self-calibration icon| G: emissivity icon
   H: maximum icon
   I: minimum icon
   J: measuring unit
   K: measuring reading
   ---|---
2. Diagram description: Figure 5
   (1) Trigger: press it to display the temperature value SCAN appears in the meantime. Release the trigger and enter into HOLD mode to save the data automatically. The unit turns off automatically if there is no further operation.
   (2) Switch the key between celsius degrees and Fahrenheit degrees. This key can also be used for increasing the value set.
   (3) Mode switch key: press the Mode key to switch modes in turn from MAX→MIN→EMS→CAL→MEAS URING INTERFACE
   a. MAX: measuring maximum temperature
   b. MIN: measuring minimum temperature
   Note: In measuring, hold on the Mode key to switch between Max and Min views.
   c. EMS: under this mode, select the emissivity 0.95 with ℃/℉ key or emissivity 0.8 with the laser location key.
   d. CAL: Under self-calibration mode, to calibrate the unit between -5.0℃ and +5.0℃
   For example: if the temperature is 26.3℃ and the temperature value measured is 25℃ then 1.3℃ should be increased as a calibration value and after calibration press the mode key to return to the measuring mode.
   (4) laser location key and backlight switch key(press the 2 keys simultaneously for backlight on/off.
   this key can also be used as a self-calibration value decrease key.

Maintenance

1. Lens Cleaning:
   Blow off loose particles using clean compressed air. Gently brush the remaining debris away with a moist cotton swab. The swab may be moistened with water.

2. Case cleaning: Clean the case with a damp sponge/cloth and mild soap.
   Note:

1. Do not use solvent to clean the plastic lenses.
2. Do not submerge the unit in water.

Specification

or ± 1.5%
-50-0t(-58-32 F):±3°C (±5 F) Whichever is greater
Repeatability| 1% of reading or 1 C
Response time| 500 mSec, 95% response
Spectral response| 5-14 um
Emissivity| 0.95 Preset, 0.8 optional
Distance to Spot size| 12:01
Operating Temperature| 0 -40’C (32 – 104 F)
Operating Humidity| 10-95%RH non-condensing, up to 30°C(86 F)
Storage Temperature| -20 – 60`C (-4-140 F)
Power| 3V (1.5V AAA battery * 2)
Typical battery life (Alkaline)| Laser Models:12 hrs

Specific Declarations:
Our company shall hold no responsibility resulting from using output from this product as direct or indirect evidence.
We reserve the right to modify product design and specifications without notice.

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