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Summary of Contents for Digi-Sense 20250-04
- Page 1 User Manual Infrared Thermometer with 10:1 Distance-to-Sight Ratio with NIST-Traceable Calibration Model 20250-04 THE STANDARD IN PRECISION MEASUREMENT...
- Page 2 Introduction The Digi-Sense Infrared Thermometer (Model 20250-04) with 10 to 1 distance-to-sight ratio offers fast response and high accuracy. Advanced features include data Hold, Max/Min readings, and auto power-off. The instrument is fully tested and calibrated to NIST-traceable standards. Careful use of this meter will provide years of reliable service.
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Page 3: Key Features
Key Features • 10:1 Distance-to-sight ratio • 2.5% basic accuracy • Fixed emissivity (0.95) • Precise noncontact measurements • Laser sighting • User-selectable °C or °F units • Automatic data Hold • MAX/MIN temperature displays • Automatic selection range and display resolution •... -
Page 4: Meter Description
Meter Description 1. IR sensor 2. Laser pointer beam 3. LCD 4. °C/°F button 5. MAX/MIN button 6. Laser / Backlight button 7. Measurement trigger 8. Battery cover 9. Handle grip... -
Page 5: Display Layout
Display Layout 1. Fixed emissivity (0.95) scan icon 2. Temperature readout 3. Max and Min reading icons 4. SCAN measuring indicator 5. Data Hold icon 6. Laser point indicator 7. Low-battery indicator 8. °C or °F temperature units... -
Page 6: How It Works
How it Works Infrared thermometers measure the surface tempera- ture of an object. The unit’s optics sense emitted, reflected, and transmitted energy, which is collected and focused onto a detector. The unit’s electronics translate the information into a temperature reading which is displayed on the unit. - Page 7 Emissivity Emissivity is a term used to describe the energy- emitting characteristics of materials. Most (90% of typical applications) organic materials and painted or oxidized surfaces have an emissivity of 0.95 (fixed in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate, cover the surface to be measured with black tape or flat black paint.
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Page 8: Emissivity Values
Emissivity Values Thermal Thermal Substance Substance emissivity emissivity Asphalt 0.90 to 0.98 Cloth (black) 0.98 Concrete 0.94 Human skin 0.98 Cement 0.96 Lather 0.75 to 0.80 Sand 0.90 Charcoal (powder) 0.96 Earth 0.92 to 0.96 Lacquer 0.80 to 0.95 Water 0.92 to 0.96 Lacquer (matte) 0.97... -
Page 9: Setup And Operation
Setup and Operation 1. Hold the meter by its handle grip and point it toward the surface to be measured. 2. Pull and hold the trigger to turn the meter on and begin testing. The display will light if the battery is good. -
Page 10: Specifications
Specifications Temperature range –4 to 630°F (–20 to 332°C) Resolution 0.1°F/C Accuracy ±2.5 of reading or ±4.5°F (2.5°C) Response time Less than 1 second Emissivity Fixed at 0.95 Distance-to-sight ratio D/S = Approximately 10:1 ratio (field of view) (D = distance, S = spot) Laser Single Class 2 (II) Laser Spectral range... - Page 11 Safety • Use extreme caution when the laser beam is turned on. • Do not let the laser beam enter your eye, another person’s eye or the eye of an animal. • Be careful not to let the laser beam on a reflective surface strike your eye.
- Page 12 Maintenance, Recalibration, and Repair (Cont.) It is recommended that Digi-Sense products are calibrated annually to ensure proper function and accurate measure- ments; however, your quality system or regulatory body may require more frequent calibrations. To schedule your recalibration, please contact InnoCal, an ISO 17025 calibra- tion laboratory accredited by A2LA.
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