QTQ303 Pressure sensors for construction machinery

Product Overview

QTQ300 series pressure sensors for construction machinery are encapsulated with our own metal sputtering thin film pressure sensitive element, specially designed to meet the severe cavitation and liquid hammer phenomena, high pressure peaks, high power fluctuations, vibration disturbances and harsh environment in hydraulic systems of construction machinery, and fully meet the requirements of these working conditions. The greatest advantages of this product are its shock resistance, high temperature resistance, long-term stability and high reliability.

QTQ301 accuracy 0.2%FS

QTQ302 accuracy 0.5%FS

QTQ303 accuracy 1%FS

FEATURES

n The integrated pulse buffer provides a high level of cavitation and liquid hammer protection

n Advanced anti-interference, anti-surge circuit protection and high insulation pressure-resistant film materials

n Non-oil filled, all stainless steel structure, high stability, no potential leakage

n Double gold wire leads are robust and reliable

n Reliable accuracy over a temperature range of -40°C to +105°C

n Wide pressure selection range, from 1MPa to 100MPa

n Fast response, response time less than 1ms

n Full range precision is optional: 0.2%, 0.5%, 1%

n Long-term stability ensured by sputtering the strain resistors directly onto a 17-4PH stainless steel substrate. Long-term stability better than ±0.1% FS/year.

n Low hysteresis and good repeatability

n Compact size, 19mm OD, 48mm H

n Low cost, can be used in bulk OEM units

n Identifiable, sensitive element unique ID number

    n IP65, IP67 high protection level

application

The products are widely used in construction machinery with hydraulic systems such as cranes, excavators, roadheading machines, rotary excavators, trailer pumps, truck-mounted pumps, pump trucks, piling machinery, fire safety machinery, road machinery, loaders, shield machines and agricultural machinery.

Performance Parameter

Range、Over-load Pressure & Failure Pressure

Note: Higher over-load pressure and failure pressure can be customized

Electric Parameter

Physical Properties

Environment Parameter