CEM DT-8833 Operation Manual Download Page 16

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Distance & Spot Size

As the distance (D) from the object increases, the spot

size (S) of the area measured by the unit becomes

larger. See: Fig: 1.

Locating a hot Spot

To find a hot spot aim the thermometer outside the area

of interest, then scan across with an up and down

motion until you locate hot spot.

Reminders

①

Not recommended for use in measuring shiny or

polished metal surfaces ( stainless steel, aluminum,

etc.).See Emissivity

Summary of Contents for DT-8833

Page 1: ...Non Contact Infrared Thermometers DT 8833 Operation Manual...

Page 2: ...TRODUCTION 3 FEATURES 3 WIDE RANGE APPLICATION 4 SAFETY 4 DISTANCE SPOT SIZE 5 SPECIFICATIONS 6 FRONT PANEL DESCRIPTION 8 INDICATOR 9 BUTTONS 9 MEASURMENT OPERATION 12 BATTERY REPLACEMENT 15 NOTES 15...

Page 3: ...ic operation Type K thermocouple functionality is also built in Proper use and care of this meter will provide years of reliable service FEATURES Precise non contact temperature measurement Type K tem...

Page 4: ...printing measure ink and Dryer temperature HVAC R Diesel and Fleet maintenance 1 SAFETY Use extreme caution when the laser beam is turned on Do not let the beam enter your eye another person s eye or...

Page 5: ...becomes larger The relationship between distance and spot size for each unit is listed below The focal point for each unit is 914mm 36 The spot sizes indicate 90 encircled energy Fig 1 MODEL 8833 D S...

Page 6: ...2498 1 Accuracy 50 to 1000 o C 1 5 of reading 3 1000 to 1370 o C 1 5 of reading 3 6 IR Measurement IR Temperature range 50 to 800 o C 58 to 1472 D S 13 1 Resolution 0 1 o C 0 1 Accuracy 50 to 20 58 t...

Page 7: ...for positive polarity Minus sign for negative polarity Diode laser output 1mW Wavelength 630 670nm Class 2 II laser product Operating temp 0 to 50 32 to 122 Storage temp 20 to 60 4 to 140 Relative hum...

Page 8: ...s spot size The smaller the target the closer you should be to it When accuracy is critical make sure the target is at least twice as large as the spot size 3 FRONT PANEL DESCRIPTION IR sensor Laser p...

Page 9: ...symbol Temperature values for the MAX MIN DIF AVG HAL LAL And TK Symbols for EMS MAX MIN DIF AVG HAL LAL and TK Current temperature value 11 Low battery 5 Buttons pbutton forEMS HAL LAL MODE button f...

Page 10: ...h time you take a reading This data is stored and can be recalled with the MODE button until a new measurement is taken When the trigger is pulled again the unit will begin measuring in the last mode...

Page 11: ...SET ALARM Select the temperature units o C or o F by using the o C o F switch To lock the unit on for continuous measurement slide the middle switch LOCK ON OFF right If the trigger is pulled while t...

Page 12: ...the meter by its Handle Grip and point it toward the surface to be measured Pull and hold the Trigger to turn the meter on and begin testing The display will light if the battery is good Replace the b...

Page 13: ...t surface and test the temperature of same point with IR measurement After both values are stable press UP or DOWN button for confirmation Then emissivity of the object will be shown at the upper side...

Page 14: ...e meter by its handle point the IR Sensor toward the object whose temperature is to be measured The meter automatically compensates for temperature deviations from ambient temperature Keep in mind tha...

Page 15: ...perature 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 temperatur...

Page 16: ...unit becomes larger See Fig 1 Locating a hot Spot To find a hot spot aim the thermometer outside the area of interest then scan across with an up and down motion until you locate hot spot Reminders No...

Page 17: ...ing characteristics of materials Most 90 of typical applications organic materials and painted or oxidized surfaces have an emissivity of 0 95 pre set in the unit Inaccurate readings will result from...

Page 18: ...oncrete 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 matt 0 97 Ice 0 96 to 0 98 Rubber black 0...

Page 19: ...78 to 0 82 Brick 0 93 to 0 96 Textiles 0 90 9 MAINTENANCE CLEARING Repairs or serving aren t covered in this manual should only be performed by qualified personnel Periodically wipe the case with a d...