Micro pressure and differential pressure pressure switch using high-precision, temperature-compensated silicon-type piezoelectric pressure sensor.
A pressure switch suitable for controlling gauge pressure or differential pressure from ±250Pa to ±200kPa, with relay ON/OFF output. When the set threshold is exceeded, the built-in relay activates, the LED on the front of the switch lights up, and an alarm sounds from the built-in buzzer. The alarm can be set to activate when the measured value exceeds or falls below the set threshold. It is possible to choose from one or two threshold operation modes.
By adopting a high-precision silicon-type piezoelectric pressure sensor with temperature compensation, excellent linearity, reproducibility, and long-term stability are achieved. The auto-zero function of the low-range model (HD402TR1L) enables stable measurements without the need for recalibration over long periods. The HD402TR□L series pressure switches are equipped with a 4-digit LCD display, and all models allow for the selection of measurement units.
The high stability against sensor aging and temperature changes significantly reduces maintenance work for aging drift and zero-point correction.
▲ Adoption of high-precision, temperature-compensated silicon-type piezoelectric pressure sensor
▲ C contact (NC/NO) relay output, standard equipped with 4-digit LCD display
▲ Threshold, hysteresis, and delay time settings available, auto-zero function