Level Membrane Pressure Transmitter, Diaphragm, Anti-Clogging, Sanitary, Flat Membrane, Thick Membrane, Asphalt Pressure Sensor
Model: PT500-703/703S

Flat Membrane/Diaphragm Pressure-Sensing Anti-Blocking Structure Design, suitable for melt/fluid media.
Utilizing imported pressure-sensitive chips; advanced surface mount technology.
High-precision, stable, digitally calibrated adjustment, and amplified integrated circuits.
A wide range of output signal types are available, including 4-20mA/0-20mA/0-5V/10V/RS485-RTU, and low-power RS485.
Compact structure, diameter of 27mm, suitable for equipment with minimal installation space.
Over 1 million cycles of use
Alternative to foreign equivalent pressure products.
Flat膜Pressure Transmitter Flat膜Pressure Sensor Thick膜Pressure Transmitter
Diaphragm Pressure Transmitter Flat Membrane Pressure Sensor Anti-Clogging Pressure Transmitter
Cavity-Free Pressure Transmitter Asphalt Pressure Sensor Paint Pressure Sensor
Chip
Flat Membrane/Diaphragm Pressure-Sensing Anti-Blocking Structure Design, suitable for melt/liquid medium.
Utilizing imported pressure-sensitive chips; advanced surface mount technology.
High impedance, high precision, high stability.
Diaphragm Structure: Thick-film resistive, thin-film silicon chip, flange-type large diaphragm.
Over 1 million cycles lifespan
Signal Processing and Output:
24-bit ADC sampling processing chip; DSP digital signal processing algorithm; multi-point wire temperature calibration; overvoltage and overcurrent protection
Standard industrial signal output: 4-20mA (two-wire), 0-20mA (three-wire), 0-5VDC, 0-10VDC, 0.5-4.5VDC (three-wire)
Digital Communication Signal Output: RS485-RTU, Ultra-Low Power Consumption RS485-RTU with Advanced 32-bit Microprocessor and 24-bit ADC
The transmission protocol uses the standard MODBUS-RTU protocol, supporting baud rates of 1200~57600 bps, and parity options: NONE, ODD, EVEN.
Supports secondary calibration, reset, reverse reset, and factory reset operations. Supports switching between 11 units, including floating-point, integer, percentage, and formatted output.
Data collection intervals can be set from 0 to 43,200 seconds (12 hours), allowing for continuous collection to meet high-speed collection needs, or single-trigger collection to minimize power consumption to the greatest extent.
Structure:
Thick Film Structure: Deep argon arc welding, connects elastic materials with process joints, high strength, impact-resistant, fatigue-resistant.
Film Structure: Laser-welded, connects elastic materials and process joints, silicone oil medium for pressure transmission, fast response, fatigue-resistant, small measurement range.
Compact overall structure, with a variety of connection methods (M20X1.5, G1/2, ZG1/2, 1/2NPT (thread minor diameter ≥ 17mm), DN50, etc.).
Process connection materials: 304 or 316.
Application:
Melt/Fluid/Viscous Medium Pressure Measurement and Control
Equipment pressure measurement in industrial, power, oil, and automation fields






Measurement Medium: Melt, Fluid, Liquid with Impurities, Gases (e.g., Paint, Toothpaste, Pigments, etc.)
Pressure Type: Gauge Pressure, Absolute Pressure
Flow Range: 0~0.6, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 100 (MPa)
0~10、20、30、50、100、150、200、300、400、500、600(KPa);
-100KPa~10KPa~40MPa;
±10KPa~±100KPa;
Overall Precision: ±0.25%FS; ±0.5%FS; ±1%FS
Non-linear: ≤0.25% FS
Repeatability: ≤0.1% FS
Output Signal: Current type: 4-20mA two-wire system; 4-20mA/0-20mA three-wire system
Voltage Type: 0~5VDC, 0~10VDC, 0.5~4.5VDC, three-wire system
Digital Type: RS485-RTU, Low Power Consumption RS485-RTU
Supply Voltage: 24VDC (9~30VDC)
3.1 to 6.1VDC (Low Power Consumption RS485-RTU)
5VDC (0.5 to 4.5VDC Output)
Life Span: ≥1 million cycles
Insulation Resistance: ≥1000 MΩ/100VDC
Load Impedance: Current Output: ≤800Ω; Voltage Output: ≥50KΩ
Medium Temperature: -20~80℃
Ambient Temperature: -20~70℃
Compensation Temperature: 0~70℃
Response Time: ≤5mS
Overload Pressure: 150% FS
Damage Pressure: 3 times scale (scale less than 40MPa); 2 times scale (scale greater than 41MPa)
Electrical Connections: DIN43650 Hesse Standard Electrical Connectors
Protection Rating: IP65
Connector Cable: 4-core shielded cable, Standard Length: 3 meters
Connective Material: 304/316L
Process Connections: M20X1.5, G1/2, ZG1/2, 1/2NPT, DN50... Custom specifications available






































