Instrument electronic thermometer production requirements

Sometimes, a lot of people when choosing electronic thermometer, but don't know the standard of the electronic thermometer, small make up today to bring you to understand is the electronic thermometer national production standards, can help you in some reference electronic thermometer when the choose and buy. Digital thermometer heat production, according to the national standards should have the following requirements: 1, the appearance of the thermometer structure should be in good condition, the surface should not have obvious deformation, surface coating should be uniform, the metal parts should not have rust and other mechanical damage. 2, thermometer, name, type, temperature range, said international temperature scale & other; C & throughout; The symbols & other; ℃” , working conditions, and other Return to check & throughout; Mark, manufacturer, production date, serial number should be clear. 3, each part of the thermometer switch, key operation should be flexible, reliable and parts should be no loose fastening. 4, thermometer fuses must contact good of sensor and sensor outside casing shall be sealed straight, there should be no obvious bending phenomenon, its length should be not less than 150 mm. 5, the thermometer shows the value of the bottom represented by a number of temperature should not be greater than zero. 001 ' C。 When a digital thermometer display value change of the input value variation ( Converted to the corresponding temperature value) Should meet the requirements of the thermometer resolution thermometer should not be less than the error resolution 70, the thermometer, with a negative display shows zero when the resolution of error should be less than 140% of the thermometer resolution. 6, thermometer in volatility value should be within 30 minutes less than 0. 001`C。 7, thermometer verification results of two adjacent verification period, every two ` C temperature measurement error difference should be less than 0. 0041C。 Electronic thermometer not responsible for the production process, but nothing can be accomplished without norms or standards, then the instrument at the time of production is according to the national standard to do, so we think the thermometer to be qualified and reliable!