Why does the flow meter require temperature and pressure compensation
1. When the flowmeter measures gas, it needs temperature and pressure to compensate at the same time; the gas is generally settled in standard condition volume flow. Because the gas volume flow rate or pressure changes, the flow rate will change.
2. When measuring superheated steam, it needs temperature and pressure to compensate at the same time; steam is generally settled by mass flow. Because either temperature or pressure changes, the density of the steam changes and the mass flow rate changes.
3. When the flowmeter measures saturated steam, single temperature compensation or single pressure compensation is required. The density of saturated steam has a fixed relationship with temperature or pressure (saturated steam density table). Knowing any of these, the density of saturated steam can be determined.
4, when measuring liquids, generally do not need pressure compensation, below 5MPa, generally only consider the temperature effect, in order to accurately measure the need for temperature compensation. In general measurements, no compensation can be used; measuring some hydrocarbons (such as crude oil) generally requires simultaneous temperature and pressure compensation. Http://
PS sheet is a new type of environmentally friendly packaging material developed in recent years. With its excellent thermoforming performance, good defensive performance, environmental performance and hygiene performance, it is widely used in medicine, food, toys, electronics and clothing.
main feature:
1. Low static electricity generation, suitable for packaging products that require low static electricity.
2. Easy to vacuum form, and the product has good anti-attack performance.
3. It has good hygienic properties and can be in direct contact with food without causing harm or benefit.
4. It is easy to be colored and can be made into materials of different colors and produced into vacuum covers of different colors.
5. Good hardness, this kind of sheet material has better hardness than other sheet materials of the same thickness. The thermoformed cup can be used as a hot and cold drink cup.
6. It meets environmental protection requirements and can be recycled and reused. When its waste is incinerated, it does not produce harmful substances that harm the environment.
The main purpose:
1. Low static electricity generation (such as electronic products...)
2. Food packaging (such as: beverages, candy, and meat... packaging)
3. Dairy products (dairy products packaged in polystyrene sheet containers can be placed in a cold storage and will not deteriorate easily;)
HIPS performance parameters:
Specific gravity: 1.04g/cm
Tensile strength: longitudinal ≥ 26MPa, transverse 24 ≥ MPa
Guard strength (without notch): 18KJ/m2
Heated size change (no lateral)＜4%
Vicat deformation temperature: 90℃
Hygienic performance meets: GB9689 standard
Transparent PS performance parameters:
Specific gravity: 1.04/cm
Tensile strength: longitudinal ≥ 26MPa, transverse 24 ≥ MPa
Guard strength (without notch): 18KJ/m2
Heated size change (vertical and horizontal) <4%
Light transmittance: ≥85%
Hygienic performance meets: GB9689 standard
Ps Printing Extruded Sheet Roll,Ps For Printing Extruded,Ps Transparency Sheet,Ps Hips Sheet Roll
Shandong Top Leader Plastic Packing CO., LTD , https://www.sdzlplastic.com