Stainless steel double metal thermometer

Productoverview:
WSS series Stainless steel double metal thermometer Is a kind of field measurement for middle and low temperature measuring instrument, can be used for direct measurement of gas, liquid, and vapor temperature. The thermometer from the design principle and structure of waterproof, anti-corrosion, explosion-proof, anti vibration, intuitive, easy reading, no mercury damage, durability and other characteristics. The protection tube, section head, locking bolts are made of stainless steel materials, aluminum case with the machined surface black electrophoresis processing, table structure and table box sealing rubber ring by ring double screw cap, the meter overall waterproof anti-corrosion performance is good, the bending type structure, novel appearance, lightweight and beautiful out of the ordinary.
Two, work principle:
WSS series Stainless steel double metal thermometer Is the principle of expansion work in varying degrees of temperature change when using two different metals. The main components for industrial use is one with two or more metal sheet laminated together to form a multilayer metal sheet. In order to improve the measurement sensitivity, usually made of sheet metals of spiral shape. When the multilayer metal sheet temperature changes, each layer of metal expansion or shrinkage range, so that the spiral rolled up or loosen. Since the end of the spiral coil is fixed and the other end and a pointer can rotate freely. Therefore, when the feeling of double sheet metal to temperature changes, in a pointer to the circular indexing on the gauge indicates the temperature to.
Three, application:
WSS series Stainless steel double metal thermometer It can directly measure the production process in a variety of -80 to +500 DEG C range of liquid, steam and gas temperature. Widely used in petroleum, chemical, machinery, shipbuilding, power, textile, printing and dyeing industry and scientific research departments.
Four, main features:
1, the scene display temperature, convenient, safe and reliable, long life and other characteristics.
2, victims of mercury free, easy reading, strong shock.
3, the protection pipe of 1Gr18Ni9Ti stainless steel and two molybdenum titanium, pressure, strong corrosion resistance.
4, core pulling type thermometer can not stop short time maintenance or replacement of movement.
5, the axial and radial type, 135ordm; type, universal type, complete varieties, suitable for various on-site installation need.

Five, technical parameters:
1, the implementation of standards: JB/T8803-1998 GB3836-83;
2, dial diameter: ;
3, accuracy: (1, 1.5);
4, thermal response time: less than 40S;
5, protection grade: IP65;
6, adjust the angle error: adjustment angle error should not exceed the range of 1%;
7, back to the poor: the return difference should not be greater than the absolute value of the basic error limit;
8, repeatable: repeatability limit should be less than the absolute value of basic error of 1/2.

Six, matters needing attention
1, can not be directly screw head;
2, the length of choice to choose the standard size close to the (integer multiples of 50mm);
3, the protective tube immersionmedium measured in length must be greater than the length of the sensing element, the general recommended immersion length is greater than 100mm, 0-50 DEG C immersion length range is more than 150mm, to ensure the accuracy of measurement.
4, should not be used to measure open container medium temperature.
In 5, storage, installation and transportation, should avoid collision protection tube, do not allow the protection tube bending change, but not the table when using the wrench.
6 regular inspection, under normal conditions of use should be. In general, every six months.
7, not allowed to work in the strong vibration environment, to prevent the influence of double metal life, does not allow the use of electric contact in the control loop vibration occasions, so as not to affect the reliability.

Seven, temperature range:

Remarks：
One The insertion depth of the thermometer, L Must be greater than Lmin , L Alternative series: One hundred , One hundred and fifty , Two hundred , Two hundred and fifty , Three hundred , Four hundred , Five hundred , Seven hundred and fifty , One thousａnd , One thousａnd two hundred and fifty , One thousａnd and five hundred , Two thousａnd So, also can be customized according to user needs.
Two And the protective tube diameter Phi 6 , Phi 8 The series of thermometers, the time constant is less than FortySecond, diameter Phi 10 When the time constant is less than Thirty Seconds.
Three Protect the stainless steel tube 1Cr18Ni9Ti Manufacturing, at room temperature under high working pressure is Zui 6.4MPa .

Eight, shape and size:

Nine, the specific model name that said:

One Axial type

Two Radial type

Three , 135 degrees To type

Four Universal type

Ten, the selection of encoding: