High and low temperature is scientific research schools, quality inspection, welders, electronics, defense, airlines, ships, posts and telecommunications, automobile, medical and other organizations and institutions common bridge inspection equipment. The key applicable aerospace goods, information content of the electronic instruments, raw materials, welders, electronic equipment, a variety of electronic devices raw gas at high and low temperature test pieces or natural alpine environment, to detect the various types of performance parameters. Nine ring manufacturing all kinds of high and low temperature test equipment, laboratory equipment can produce solutions according to customer requirements.
Customers in the purchase of high and low temperature test equipment, in addition to effectively clear equipment specifications, the specified temperature measuring range category, machinery and equipment equipped, etc., it also should take into account the temperature change rate of high and low temperature test equipment, since that piece will jeopardize immediately experimental results and success and failure. I companies based on many years of experience in manufacturing production for our customers made it clear several points proposed by the temperature change rate of about appropriate selection of high and low temperature test equipment, for your reference.
1. General high and low temperature without temperature rate index value Save, Save temperature from the working temperature to a low temperature tolerance is zui time is generally 90 ~ 120min. Alternating high and low temperature environment test chamber, the test alternating high and low temperature heat chamber often becomes a predetermined temperature rate, which is typically predetermined temperature change rate 1 ℃ / min, then within the scope of this rate of speed adjustable. And rapid environmental chamber temperature transition rate of temperature change quickly, raised temperature, rate of temperature reduction can exceed 3 ℃ / min ~ 15 ℃ / min, raised temperature in some temperature ranges, and the rate of temperature reduction can exceed 30 ℃ / left min.
2. rapid temperature specifications, high and low temperature transition rate is generally visible all the same temperature, i.e., -60 ~ + 130 ℃, but evaluation desuperheating temperature change rate but have different scope, according to the experimental different experiments predetermined, high and low temperature rapid temperature transition temperature change is some visible -55 ~ + 80 ℃, and some is -40 ~ + 80 ℃.
3. rapid temperature change about the high and low temperature test chamber temperature ramp there are two kinds of argument, which is the average lift across the board rate of temperature, this temperature is linear lift rate (in fact, every 5min Pingjunsudu). Refers Pingjunsuduo line within the range of temperature change in the environmental chamber, the high temperature and low error zui zui temperatures and time ratio, the performance parameters of each stage overseas environmental testing equipment manufacturers to produce full temperature change rate refers to the full range of average rate. Refers to a linear ramp rate in the elevator random 5min each time, to ensure that the temperature change rate. In fact for a rapid transition temperature high and low temperature, the temperature lift to ensure linear rate of difficulty zui big, important zui each section is within the time frame a 5min after desuperheating section zui, environmental testing tank temperature can exceed the speed reduction. Thus zui good laboratory equipment includes a lift line average rate of temperature ramp rate and a linear elevator (5min each Pingjunsuduo) the two main parameters, usually, a linear elevator ramp rate (per 5min Pingjunsudu) line is the mean rate of temperature lift 1/2.