This model of pressure transmitter adopts internationally advanced high-precision and high stability sensors, equipped with ASIS high-performance amplification circuits. It has undergone thousands of fatigue impacts, high and low temperature cycle aging, and precise digital temperature compensation processes, and is then precision welded with stainless steel full sealing (laser welding). It is designed and manufactured specifically for the coal mining industry. High quality sensors, strict calibration processes, and perfect assembly processes ensure the excellent quality of this product. It is particularly suitable for measuring the pressure of hydraulic, pneumatic and other media, and even for harsh environments such as sewage, steam, mild corrosiveness, and gas measurement. Build a foundation to meet various customer needs.

Main technical parameters
Range	-0.1～0～1～150(MPa)(The range can be customized according to the actual needs of the user)	Ultimate Overload	200%FS
Comprehensive accuracy	0.1%FSThe0.25%FSThe0.5%FSThe1.0%FS	response time	5 mS(rise to90%FS)
output signal	analog quantity 4～20mA(two-wire system)、0～5V、0～10V(three-wire system)digital outputRS485(modbusProtocol, four wire system)	load resistor	Maximum current output type800ΩVoltage output type greater than50KΩDigital output based on the actual mounting capacity of the chip
power supply voltage	24DCV(9～36DCV)	insulation resistance	greater than2000MΩ (100VDC)
medium temperature	-20～85～150~500 ℃, unless otherwise specified, it is at room temperature of 85 ℃ within	Sealing grade	IP65
ambient temperature	room temperature(-20～85℃)	Long term stability performance	0.1%FS/year
Zero temperature drift	≤±0.05%FS℃	Vibration impact	At the frequency of mechanical vibration20Hz～1000HzInternally, the output change is less than0.1%FS
temperature drift	≤±0.05%FS℃	electrical interface	Tightening nut, four flexible and thick core shielded wire, Hirschman plug, etc
compensation temperature	060℃	Mechanical connection (threaded interface)	G1/2TheM20×1.5TheM22×1.5Wait, other threads can be designed according to customer requirements
Safe overload	150%FS	Overall dimensions	M20×Φ26×110mm, Based on actual dimensions

Example of selection guide (complete model: PTH503-30M-mA-0.5-M20-3M-P)
Model code	Measurement range	unit of measurement	output signal	Comprehensive accuracy	mechanical connection	Wiring length	with temperature
PTH503	30	M	mA	0.5	M20	3M	P
	Indicate with actual numbers	M=(MPa)	mA=(4-20mA)	0.5=(0.5%FS)	M20=(M20X1.5)	3M=(3 meters)	Equipped with temperature function, it is designed for RS485 digital signal output products and defaults when not configured
		K=(KPa)	10V=(0～10V)	Indicate with actual numbers	M22=(M22X1.5)	Indicate with actual length
		P=(Pa)	5V=(0～5V)		M14=(M14X1.5)
		B=(Bar)	4V=(1～5V)		G1/2=(G1/2)
		mH=(mH20)	R=（RS485）		G1/4=(G1/4)
		mmH=(mmH20)	N=（NB-IOT）		NPT1/4
			G=（GPRS）		ZG1/4
			mV=（mV）		Mark with actual dimensions