Description

Pressure sensor for water/viscous liquid pressure measurement has optional output signal, such as 4-20mA/0-20mA/0-5V/1-5V/0-10V/RS485.

Application: Pressure sensor is widely used in food, medicine, hygiene and brewing industries.

Specification:

Model	ATO-PRES-P350
Weight	0.4kg
Measuring range *	0~35MPa (0~350bar/0~5076psi)
Pressure type	Gauge pressure (standard) Contact us for absolute pressure, sealed pressure type (note that the measuring range for these two types must ≤1MPa)
Measure medium	Pure water, wine, fruit juice, viscous liquid
Power supply *	DC 12V, DC 24V, DC 12-36V
Output signal *	2 wire: 4-20mA, 0-20mA 3 wire: 0-5V, 1-5V, 0-10V RS485
Accuracy *	±0.5%FS, ±0.3%FS, ±1%FS (when output signal is 0-5V or 0-10V)
Zero temperature drift	±0.03%FS/℃
Sensitivity temperature drift	±0.03%FS/℃
Long term stability	≤0.2%FS/year
Overload pressure	200%FS
Frequency response (-3dB)	5kHz~650kHz
Electrical connection *	DIN connector type, M12 circular connector type, direct lead wire type
Thread of pressure connection *	G1/2, M20*1.5
Response time	＜10ms
Operating temperature	-40~+80℃ (-40~+176℉)
Medium temperature	-40~+60℃ (-40~+140℉)
Material	Housing: 304 stainless steel Fill fluid: silicon oil Pressure port: 304 stainless steel, or 316L stainless steel (customizable) Separating diaphragm: 304 stainless steel, or 316L stainless steel (customizable) Sealing: FKM (medium temperature ≤ +200℃/+392℉), EPDM, NBR
Cable length	2m
Protection class	IP65

Note: * denotes optional parameters, you can select every parameter in drop-down lists to finish your order.

Pressure sensor dimension drawing (unit: mm):

Pressure sensor wiring diagram:

Tips: Why the pressure sensor output signal is smaller than 4mA?
The most common reasons for maximum display is an improper selection of the pressure sensor’s range or wrong setting of range, or zero shift is not made in liquid level measurement, thus making the output current of the pressure sensor to exceed 20mA. When the circuit of pressure sensor is suspected to be faulty, the circuit board can be replaced to judge the faults. Damage of the pressure sensor’s diaphragm will also lead to over-range failure. For example, the output current of the diaphragm pressure sensor used for measuring vapor is greater than 20mA, and it’s found after disassembling that some diaphragms have a lot of bumps, some diaphragms deform after freezing or overheated. The failure causes may be abnormal steam tracing which leads to condensate freezing, or long-term contact between the steam and diaphragm box caused by leakage. It also indirectly illustrates the importance of on-site inspection.