statement：
Recently, some illegal merchants in society have stolen our company's early use and engaged in commercial activities online using our unique product models, which constitutes infringement and seriously disrupts the market, deceiving consumers. To prevent customers from being deceived, we hereby declare that the TR-800 series product models are exclusively owned by Henan Tianrun Measurement and Control Instrument Co., Ltd. Our company has not set up any distribution agents in any region of China, and all orders and shipments are directly completed from the manufacturer! Please identify Henan Tianrun Measurement and Control Instrument Co., Ltd. to avoid being deceived!



TR-800TC series intelligent ceramic capacitor pressure transmitter
summary:
The TR-800TC series ceramic capacitive pressure transmitter adopts internationally advanced ceramic capacitive pressure sensors, combined with high-precision electronic components, and assembled through strict process. It adopts pressure measurement technology without intermediate fluid, fully utilizing the technical advantages of sensors, making the transmitter have excellent performance, strong overload and impact resistance, small temperature drift, high stability, and high measurement accuracy. The TR-800TC ceramic capacitive pressure transmitter has multiple ranges, multiple connection forms, and multiple liquid contact materials. It can be widely used in many industrial fields such as petroleum, chemical, power, metallurgy, pharmaceuticals, food, etc., and can adapt to various industrial occasions and media. It is a traditionalpressure gaugeIt is an ideal upgraded product for traditional pressure transmitters and is an ideal pressure measuring instrument in the field of industrial automation. Ceramic capacitive pressure transmitters are widely used for pressure measurement of liquids, gases, and vapors, as well as liquid level measurement.
Characteristics:
High precision and good stability.
● Two line working mode, 4-20mA signal output.
Sensitive components and circuit boards adopt a fully solid structure, which is sturdy and vibration resistant.
Strong anti-interference ability, good temperature stability, explosion-proof shell structure, and can be used 24/7.
Has excellent anti-corrosion performance, ensuring good reliability in use.
The structure is lightweight, simple and reasonable, without the need for brackets or horizontal installation, and can be installed directly at any position.
working principle:
The transmitter consists of a sensor and electronic component circuit. The pressure of the measured medium directly acts on the ceramic diaphragm of the sensor, causing the diaphragm to produce a small displacement proportional to the pressure of the medium. Under normal working conditions, the maximum displacement of the diaphragm is not greater than 0.025mm. After the electronic circuit detects this displacement, it is converted into a standard industrial measurement signal corresponding to this pressure, which is (4-20mA). During overpressure, the diaphragm is directly attached to a sturdy ceramic substrate. Due to the gap between the diaphragm and the substrate being only 0.1mm, the maximum displacement of the diaphragm during overload can only be 0.1mm (at this time, the diaphragm is attached to the ceramic support to avoid damage). Therefore, the structure ensures that the diaphragm will not undergo excessive deformation. Due to the use of high-performance industrial ceramics in the diaphragm, the sensor has strong resistance to impact and overload. The capacitance change proportional to pressure can be detected between the substrate electrode ① and the membrane electrode ②. The capacitance change value is amplified by the laser fine-tuning circuit to output a DC voltage of up to 0.5-4.5V, which can be directly sampled by the computer.
Specification
Use objects such as liquids, gases, or vapors
Measurement range gauge pressure: 0-1KPa-7MPa; Negative pressure: -100KPa~7MPa
Output 4-20mA.DC
Power supply 13-30V.DC
Load characteristics 4-20mA. DC two-wire system load R ≤ 50 (V-13)
）Temperature range: Environmental temperature: -20 to+70 ℃;
Storage temperature: -40 to+85 ℃
Shell protection IP65
Explosion proof mark, intrinsic safety type Exia Ⅱ CT6
Performance indicators:
The comprehensive accuracy provides a standard of ± 0.25% BFSL/year, with high precision of ± 0.1% BFSL/year and better stability than ± 0.1% BFSL/year. The temperature effect is within the range of -20 to+70 ℃, with a variation of less than ± 0.18%/10 ℃. When the vibration frequency is 20-200Hz in any direction, the variation is less than ± 0.02% BFSL/year. After a 100G impact of 11ms in any direction, the variation is less than ± 0.02% BFSL. As long as the terminal voltage of the input transmitter is higher than 13V, there is no load effect. No impact on locationStructural indicatorsStructural Material Diaphragm Material: Aluminum Oxide Ceramic Shell Material: Aluminum Alloy Stone Casting Contact Medium Material: SUS304 "O" Ring Fluororubber (or PTFE) Process Connection Standard M20 × 1.5 Male Thread Electrical Connection can be led out from any outlet as needed. It is recommended to use a φ 10 industrial cable as the lead for sealing. The universal cable connector PG16 or M20 × 1.5 can be used for the lead out joint, and the non lead end should be sealed with an end cap.
Structure and installation method:
1. Install directly on the measuring point (at any angle).
2. Try to install on pressure measuring points with small temperature gradients and fluctuations, while avoiding strong vibrations and impacts.
When installing outdoors, try to place it in a protective box as much as possible, avoiding direct sunlight and rain to maintain stable transmitter performance and extend its service life. When measuring steam or other high-temperature media, be careful not to exceed the operating temperature of the transmitter. If necessary, please install a radiator or other cooling device connection.
5. During installation, a pressure cut-off valve should be installed between the transmitter and the medium to facilitate maintenance and prevent blockage of the pressure tap, which may affect measurement accuracy. In situations with large pressure fluctuations, dampers or pressure buffering devices should also be installed. Note: Components or structures that may affect explosion-proof performance must not be replaced or modified arbitrarily.
System connection and debugging:
It is recommended to use 24V DC for the power supply voltage Vs. The resistance value of the sampling resistor (load resistor) RL in the secondary instrument is selected as 250 Ω. If Us and RL choose different values, then the value of RL=VS-12/0.02 cannot exceed the value calculated by the formula. The power supply is connected to the transmitter through a signal line, and the connection holes on the top two sides of the transmitter are sealed with cables or assembled with signal lines. The signal cable is locked with a fastening nut, and unused connection ports must be sealed. A: The wiring diagram of the measurement system must use shielded signal cables in the system circuit and be reliably grounded.
How to choose a pressure transmitter (refer to when ordering):
(1) Determine the measurement medium and select the corresponding transmitter based on the degree of corrosion. Generally speaking, transmitters with stainless steel isolation units can be used for non strong acids and strong alkalis. Otherwise, only specially designed transmitters such as titanium alloys designed for corrosion prevention can be selected. Secondly, it is necessary to check whether the measuring medium is viscous and clean. If the medium is viscous, a transmitter with a hard isolation unit needs to be selected.
(2) When determining the measurement range and measurement method, the actual measurement range and overvoltage measurement range should be considered when selecting the measurement range. The selection range should be based on the larger measurement range, while also considering the size of the overvoltage measurement range. In addition, it is necessary to choose the correct measurement method. If measuring differential pressure, a differential pressure transmitter must be selected.
(3) Determine the accuracy range, compensate for the temperature range, and use the temperature range according to the required low precision measurement. Generally, products with slightly higher accuracy than the required low precision are selected. When choosing, long-term stability indicators should also be considered. The so-called compensation temperature range refers to the temperature range of the measured medium during normal operation, while the operating temperature range refers to the maximum temperature range that may occur during use, generally slightly larger than the temperature range of the measured medium.
(4) Determine power supply, output signal, pressure thread interface, electrical interface, mechanical dimensions, etc
(5) Determine whether explosion protection, electromagnetic interference prevention, and environmental indicators for shell waterproofing are required