loading

Sincerity Group | Coriolis flow meter manufacturers| 

Teach you how to temperature instrument for selection

by:Sincerity Group     2021-07-21
Abstract: to teach you how to selection of instrument for temperature information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. With the improvement of the factory xinji try repairing, need to purchase the temperature of the instrument is becoming more and more now to system analysis of instrument selection, from the aspects such as economy, function, purpose, application environment is introduced, in order to provide help for you. One is the contact temperature is commonly used in industry. More flow meter manufacturers choose model price quote you are welcome to inquire, here is to teach you how to selection of instrument for temperature article details. With the improvement of the factory xinji try repairing, need to purchase the temperature of the instrument is becoming more and more now to system analysis of instrument selection, from the aspects such as economy, function, purpose, application environment is introduced, in order to provide help for you. A contact thermometer is commonly used in industry is commonly used in non-contact thermometer selection principle: ( A) Meet the requirement of temperature measurement range; ( 2) Meet the requirement for temperature measurement accuracy; ( 3) For indicating, recording, and alarm and temperature control requirements; ( 4) Meet the requirements of the use of environmental conditions. ( 5) Meet the above condition choose cheap, strong and durable, easy maintenance of the instrument. Glass thermometer generally use the range of 0 ~ 300 ℃, divide into two kinds, ordinary and precise normal use thermometer: 1. Level 5 or level l. Precision measuring thermometer: should choose 0. Level 5 or 0. 25. Good linearity, response in general, only live shows, do not need to match other instrument, electrical contact can be used as a control. Simple structure, easy to use, cheap and high accuracy, etc. The remote temperature measurement, but the inconvenience weak structure, fragile, do not allow more than a thermometer limit, can't connect to record and control instrument. Pressure type thermometer range of 0 ~ 125 ℃, generally use divide into two kinds, gas and liquid gas type - use scope 100~500℃,1. 0 to 1. Using range - 5% accuracy, the liquid type 50~500℃,1. 0 ~ 2. 5% accuracy. Structure is simple, the price is generally, good vibration resistance, can close remote measuring equipment in gas, liquid and steam temperature, calibration is clear, the charged contact can be used as a control, the environmental requirements is not high, but the instrument time constant is big, accuracy is not high, avoid the use of the location of the first third scale, cannot connect to record and control instrument. Bimetallic thermometer is suitable for the industrial site inspection instrument measurement, low temperature, can be used to directly measure the temperature of the gas, liquid and steam. Good linearity, slow response, low accuracy, only affected the scene showed that cannot connect to record and control instrument, electrical contact can be used as a control. They compared with industrial mercury thermometer, a mercury-free harm, easy reading, solid and the advantages of resistance to vibration, can replace industrial glass mercury thermometer. A thermocouple, detection ( Measurement) Element zui thermocouple is industry one of the commonly used temperature detecting element. Must go together with secondary instrument, its advantage is: one is the high accuracy of measurement. Because of thermocouple direct contact with the object being measured, not affected by intermediate medium. The second is wide measuring range. The commonly used thermocouple from - 50 ~ + 1600 ℃ can be continuous measurement, some special thermocouple zui low measurable to - 269℃( Such as gold iron nickel chrome) , zui up to + 2800 ℃ ( Such as tungsten - Rhenium) 。 Third, simple structure, easy to use. Thermocouple is usually composed of two different kinds of metal wire, but is not limited by the size and the beginning of, outside has protective casing, which are very convenient. Second, according to the temperature measurement range and precision, the corresponding index number of thermocouple temperature at 1300 ~ 1800 ℃, requirements and high accuracy, generally choose B type thermocouple; Required accuracy is not high, atmosphere and allow tungsten-rhenium thermocouples are available, and higher than 1800 ℃ generally choose tungsten-rhenium thermocouples; Temperature at 1000 ~ 1300 ℃ requires accuracy and higher available S type thermocouple and N type thermocouple; Under 1000 ℃ in general with K type thermocouple and N type thermocouple, below 400 ℃ general use E type thermocouple; Negative temperature under 250 ℃, and usually measured in T thermocouple, T thermocouple during low temperature stability and high precision. Three, the choice of using atmosphere S type, type B, K type thermocouple is suitable for use in strong oxidation and weak reducing atmosphere, J type and T type thermocouple is suitable for weak oxidizing and reducing atmosphere, if use air tightness better protection tube, the atmosphere is not too strict. Four, the choice of the type of prefabricated thermocouple is applicable to general occasions; Armoured thermocouple is suitable for the resistance to vibration or shock, and improve the response speed required. The choice of the five, durability and thermal response line diameter thermocouple better durability, zui high temperature limit is relatively high, but the response is slower, to measure the gradient of temperature, temperature control is poor.
Whether it's automation or artificial intelligence, the rapid convergence of technology and business often determines mass flow meter’s competitiveness.
For more advice on tips, please visit our website Sincerity Flow Meter. Do not hesitate to contact us if you are interested.
To do that, Beijing Sincerity Automatic Equipment Co., Ltd will need to make sure our business is listed accurately on as many directories as possible, including technology and quality.
The risk of u shape coriolis mass flow meter is reduced by low flow turbine flow meter with the consumption of .
Custom message
Chat Online
Chat Online
Leave Your Message inputting...
Sign in with: