The QTQ300 series construction machinery pressure sensor is packaged with a metal-based pressure-sensitive chip independently developed and produced by our company. It is aimed at the serious cavitation, liquid hammer phenomenon and high pressure peaks in the hydraulic system of construction machinery, large power fluctuations, large vibration interference, and environmental Designed for harsh and other problems, fully meet the requirements of these working conditions. The biggest advantage of this product is impact resistance, high temperature resistance, good long-term stability and high reliability.

QTQ301 accuracy class 0.2%FS

QTQ302 accuracy class 0.5%FS

QTQ303 accuracy class 1%FS

With an annual production capacity of 6 million cores, it has completely broken the pattern of foreign monopoly of the cores.

The first packaging line with an annual output of 2 million pressure sensors was successfully put into production. Follow-up will continue to expand production.

Qitai has a mass-produced metal-based pressure-sensitive chip production line, a 100-level purification workshop, a fully automatic bonding machine, and fully complies with the ISO9001 quality management system to ensure product quality and consistency. The company is well aware of the importance of quality in product applications, and for this reason we have been doing everything possible to improve product quality. For an engineer, the worst thing is to stop work because of quality problems. Qitai attaches great importance to this problem and makes unremitting efforts to it. We promise to provide you with the greatest quality assurance. Qitai uses sputtering film technology, complete products and 100% final inspection quality assurance measures to ensure that customers do not Worry about quality problems again.

The QTQ300 series pressure sensor adopts a compact design of fully welded stainless steel, which can effectively protect the sensor under harsh working conditions. The electrical connector's protection level reaches |IP67, and has a sturdy internal structure design to ensure that the sensor can work normally in a high vibration environment.

◆The integrated pulse buffer provides a high level of anti-cavitation and anti-liquid hammer capabilities

◆Advanced anti-interference, anti-surge circuit protection and high-insulation withstand voltage film material

◆No oil-filled, fully welded stainless steel structure, will not cause thermal instability or leakage

◆Double gold wire lead technology, the lead is firm and reliable

◆The accuracy can be ensured in the temperature range of -40~+105℃

◆Wide pressure range, from 1MPa ~ 100MPa

◆Fast response speed, response time less than 1ms

◆0.2%FS, 0.5%FS, 1%FS full scale accuracy optional

◆The sputtering process, sputtering the strain resistance directly on the 17-4PH stainless steel substrate to ensure long-term stability, which is better than ±0.1%FS/year

◆Small hysteresis, good repeatability

◆Compact and small size, outer diameter ￠19mm, height 48mm

◆Low cost, can be used for mass OEM devices

◆Identifiable, unique ID number of sensitive chip

◆IP67 high protection level

Products widely used in cranes, excavators, boring machines, rotary drilling machine, trailer pump, car pump, pump, piling machinery, machinery fire safety, road machinery, loaders, shield structure machines, agricultural machinery with hydraulic system Construction machinery.

Performance parameter

Range, overload pressure and failure pressure

Note: higher overload pressure and failure pressure can be customized

Electrical parameters

Physical properties

Environmental parameters

Wiring

Pressure port

Electrical Interface

Ordering guide

Selection example: QTQ301 105 G2 A 01 =QTQ301 accuracy 0.2%FS Range: 1MPa Pressure interface: G1/4-19 Output: 4-20mA Electrical interface: M12X1

If you have any questions during the selection process or need special customization, please contact Qitai Sensing sales engineer for more detailed information and selection suggestions. Qitai Sensing serves you wholeheartedly.