Corrosion resistant sampling and heat tracing composite pipe is an important component in environmental monitoring systems. It consists of a set of corrosion-resistant high-performance resin conduits, self limiting heat tracing strips, and compensation cables to form an inner core, an external insulation layer, and finally a flame-retardant polyethylene (PE) protective jacket. The automatic temperature limiting function of the self limiting heat tracing belt can ensure that a certain temperature is maintained inside the sampling tube, thereby ensuring that the collected sample is as consistent as possible with the initial value, and ultimately the environmental monitoring system continuously and correctly collects the sample gas. According to the actual conditions such as the composition and temperature of the collected sample gas, different materials can be selected for the sampling conduit in the corrosion-resistant heat tracing sampling composite pipe, such as PFA (tetrafluoroethylene and perfluoroalkyl ether copolymer), FEP (tetrafluoroethylene and hexafluoropropylene copolymer), PVDF (polyvinylidene fluoride), PE (flame retardant polyethylene), nylon 610, etc. The heat tracing tape can be selected from medium, low, and high temperature, and compensation wires, power cords, etc. can also be added according to user requirements.
Corrosion resistant heat tracing sampling heat tracing composite pipe is a composite body composed of multiple components, which combines multiple systems on a limited cross-section.
sampling system
Multiple types and materials of sampling tubes can be combined: Teflon PFA、FEP、PE、 Nylon 610, 12, copper tube, 316SS, 304SS, etc.
Thermal system
Insulated, flame-retardant, and lightweight insulation layer; Automatic temperature limiting heating cable or constant power heating cable.
Electrical system
It can be equipped with instrument signal cables, compensation cables, and control cables to meet the requirements of instrument display monitoring.
Security system
To adapt to different process conditions, each system is shielded and isolated with aluminum foil or metal wire mesh to achieve fire safety, anti-static, and electromagnetic shielding effects. Some systems are equipped with waterproof films and protective sheaths that enhance flame retardancy and UV protection. The combination of multiple systems, integrating multiple functions, simplifies complex engineering. It plays a good role in ensuring remote work and remote diagnosis of systems. The heat tracing system prevents the gas inside the tube from condensing and maintains measurement above the dew point, ensuring measurement accuracy and creating conditions for centralized control and computerization. Strengthening the outer sheath can prevent crossing and damage caused by other factors.
Technical parameters of the product:
① Electrical indicators
(1) The standard power of the self limiting heat tracing belt is 15W/m (power at 10 ℃)
(2) Rated voltage: 220VAC
(3) Maximum heating length 100-150m
(4) Equipped with a circuit breaker with a current value of 30A. If the length of the composite pipe is ≥ 50m, a dedicated automatic current limiter for self limiting temperature tracing should be equipped
(5) One circuit of the heat tracing system
② Thermal indicators
(1) Maintain a temperature of 40-50 ℃ inside the pipe at an ambient temperature of -20 ℃ and a wind speed of 15m/s.
(2) The sampling tube can withstand corrosion from various acidic and alkaline media, with a compressive strength of 1.0Mpa and no leakage.
(3) The sampling tube can operate for a long time at temperatures below 200 ℃.
③ Installation indicators
(1) The minimum curvature radius of composite pipe is 0.5m
(2) Maximum continuous length of 100-150m
(3) Minimum installation temperature -10 ℃ (take appropriate measures between -30 ℃ and -40 ℃)
(4) Minimum fixed distance: 5m vertically and 2m horizontally
