Assembly type heat resistance

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WZP-230 series Assembly type heat resistance Is the use of the material when the temperature changes…

Productoverview:
WZP-230 series Assembly type heat resistance Is the use of the material when the temperature changes with its own resistance characteristics change to measure the temperature. When the measured temperature gradient exists in the medium, the measured temperature is the average temperature of the temperature sensing element is in the medium range. Despite the appearance difference of thermal resistance is large, but their basic structures are roughly similar, generally have a temperature sensing element, insulation casing, protection tube, and junction box and other major parts.
Two, work principle:
WZP-230 series Assembly type heat resistance Is the use of the material when the temperature changes, the resistance change of temperature measurement. When the resistance changes, the instrument will display relevant resistance temperature.
WZP-230 series Assembly type heat resistance The temperature sensing element, an outer protection tube, junction box and the various uses of the fixing device, a single and double element two specifications, protection tube not only has corrosion resistance, but also has enough mechanical strength, ensure the products can be safely used in various occasions.
Three, application:
WZP-230 series Assembly type heat resistance As the temperature measurement sensor, usually with temperature transmitter, controller and display instrument and other facilities, consisting of the process control system for direct measurement or control of the production process in a variety of -200 -500 DEG C range of liquid, steam and gas solids and surface temperature.
Four, main features:
1, the pressure spring type temperature sensing element, good anti vibration performance;
2, high precision of temperature measurement;
3, high mechanical strength, good pressure resistance;
4, imported film resistor, stable and reliable performance.
Five, technical parameters:
Product executive standard
IEC584
IEC1515
GB/T16839-1997
JB/T5582-91
Insulation resistance at room temperature:
Heat resistance at ambient temperature is 15 to 35 DEG C, relative humidity is less than 80%, the test voltage is 10 - 100V (DC) >100M. The insulation resistance between electrode and outer tube.
Six, installation notes:
For the installation of thermal resistance; thermal resistance should pay attention to several details in the installation and use; for the temperature measurement is accurate, safe and convenient maintenance, and does not affect the equipment operation and production operation. To meet the following requirements, in the selection of installation site of thermal resistance and insertion depth should pay attention to the following 2 points:
1, with a protective casing with heat transfer thermal resistance and heat loss, in order to reduce the measurement error, the thermal resistance should have sufficient depth of insertion:
A, when measuring the original insertion depth is more than 1m, should be installed vertically, or installing supporting frame and a protective sleeve.
B, if you need to measure the flue gas temperature is, while the flue diameter is 1000mm, the thermal resistance can insert depth 500mm.
Heat resistance C, temperature measurement for fluid pipe center, generally the measuring end is inserted into the pipe center (vertical or inclined installation). If the measured fluid pipe diameter is 100 mm, the thermal resistance should choose the insertion depth of 50~100 mm (should take into account the size installation base or flange).
D, for temperature measurement of high temperature and high pressure and high speed fluid (such as main steam temperature), in order to reduce resistance to the fluid and prevent the protective sleeve to protect the casing fracture under the influence of the fluid, can take the protection tube or shallow inserted by thermal sleeve type heat resistance. Shallow inserted heat resistance protection sleeve type, which is inserted into the main steam pipe depth should be less than 75mm; thermal sleeve type thermal resistance standard insert depth 100mm.
2 in order to measure the thermal resistance and the measured end has sufficient heat exchange medium, should choose a reasonable measuring position, to avoid the valve, elbow and piping and equipment installed near dead heat resistance.

Seven, no heat resistance fixing device:

Note: 1, "*" index number for special order specification;
2, No. 120, 121 for the splash proof junction box, type 130, 131 waterproof type connection box.
Fixed screw type heat resistance:

Note: 1, "*" index number for special order specification;
2, nominal pressure: 10MPa;
3, No. 220, 221 for the splash proof junction box, type 230, 231 waterproof type connection box.
A movable flange type thermal resistance:

Note: 1, "*" index number for special order specification;
2, No. 320, 321 for the splash proof junction box, type 330, 331 waterproof type connection box.
Fixed flange thermal resistance:

Note: 1, "*" index number for special order specification;
2, nominal pressure: 2.5MPa;
3, No. 420, 421 for the splash proof junction box, type 430, 431 waterproof type connection box.
Fixed thread taper protection tube:

Note: 1, "*" index number for special order specification;
2, nominal pressure: 30MPa, flow rate is less than 80 meters per second.