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Product Title: AR842A Product No.: 23020002 CATEGORIES Time on the Guarantee of all items will be valid within 1 year from the date you placed your order. 1. Distance & spot size : As the distance from the object increase,the spot size of measuring area becomes larger. 2. Field of view : Make sure the target is larger than the unit's spot size .The small the target the closer measure distance .when accuracy is critical,make sure the target is at least twice as large as the spot size. 3. Emissivity: Most organic materials and painted or oxidized surfaces have an emissivity of 0.95 (pre-set in the unit ),Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate, cover the surface to be measured with masking tape or flat black paint .Measure the tape or painted surface when the tape or painted reach the same temperature as the material underneath. Temperature range: -18 to 330C(0 to 626F) Accuracy: 25C(77F)to 330C(626F)+/-3.5C or +/-2% 0C(30F) to 25C(77F)+/-3C or +/-2% -18C(0F) to 0C(30F)+/-3.5C or +/-3%( whichever is greater) Repeatability: 1% of reading or 1C Response time: 500 msec,95% response Ambient operating range: 0 to 40C (32 to 104F) Relative humidity: 10-95% RH noncondensing,@ up to 30C(86F) Storage temperature: -20 to 60C (-4 to 140F)without battery Weight/Dimensions: 170G;175*100*49mm Power: 9V Alkaline or Nicd battery Battery life (Alkaline): Laser Models:12hrs 1 X Non-contact infrared thermometer |