YD-34 Flush Diaphragm Pressure Transmitter (4-20mA)
Product Overview
The YD-34 is a piezoresistive pressure transmitter featuring an imported isolated thin-film piezoresistive sensor. Utilizing laser-trimmed resistance calibration and automatic temperature compensation, it delivers highly accurate and stable performance. The transmitter provides standard 4–20 mA or 0–5 V output signals and is designed for compact and lightweight integration into a variety of industrial systems.

Key Features
Isolated thin-film piezoresistive sensor
Laser-trimmed and temperature compensated
Standard 4–20 mA / 0–5 V output
Compact and lightweight design
Excellent long-term stability
Typical Applications
Widely used in pressure measurement and control across industries including:
Aviation & Aerospace
Metallurgy & Chemicals
Machinery & Petroleum
Food & Pharmaceuticals
| Technical indicators: | |
| Media: | Oil, water, gas and compatible with 316L stainless steel |
| Pressure: | -0.1MPa ~ 0 ~ 10MPa |
| Overload: | 2 times (10MPa or less); 1.5 times (10MPa or more) |
| Accuracy: | ± 0.1% FS ,± 0.2% FS , ± 0.5% FS,± 1% FS |
| Nonlinear: | <± 0.2% FS |
| Hysteresis and repeatability: | ≤ ± 0.1% FS |
| Long-term stability: | ≤ ± 0.1% FS / year |
| Zero drift: | ≤ ± 0.02% FS / ℃ |
| Response time: | ≤500ms (standard) |
Electrical parameters manufactory 4-20ma Flush Diaphragm Pressure Transmitter
| Output: | Current 2-wire: 4 ~ 20mA Voltage 3-wire : 0 ~ 5V; 0 ~ 10V; 1 ~ 5V; 1 ~ 10V Option:RS 485 ,hart |
| Supply voltage: | DC24V (12 ~ 32VDC, less may contact) |
| Load capacity: | current output: ≤ 500Ω |
| Voltage output: | ≤ 250Ω output impedance |
| Electrical connection: | Standard for Hersman, optional direct outlet or M20 PIN Aviation |
| Materials: | |
| Wetted parts: | 316L stainless steel |
| Shell: | 304 |
| Seals: | Viton, optional: EPOM, NBR |
| Diaphragm: | 316L stainless steel |
| Other specifications: | |
| Process connection: | 50.5mm clamp |
| Material: | 316L stainless steel wetted materials; Shell: 304 |
| Protection class: | IP 65 |
| Medium temperature: | -30 ~ 80 ℃ |
| Ambient temperature: | -40 ~ 80 ℃ |
| Storage temperature: | -40 ~ 100 ℃ |
| Earthquake: | 108 RMS (25 ~ 2000HZ) |
| Current Limit: | The maximum current-24mA; voltage-largest 5mA |
| Certification: | CE |
Product Features: YD-34 4-20mA Flush Diaphragm Pressure Transmitter
Sturdy Construction: 316L flush diaphragm with stainless steel housing
Reliable Sensing: Piezoresistive pressure sensor design
Signal Integrity: 4–20 mA output suitable for long-distance transmission
Electrical Protection: Built-in overvoltage, overcurrent, and reverse polarity protection
Noise Immunity: Excellent anti-interference and anti-surge performance
This transmitter combines robust mechanical design with stable electrical characteristics, making it suitable for demanding industrial measurement applications.
Application Fields: YD-34 4-20mA Flush Diaphragm Pressure Transmitter
Process control systems
General industrial applications
Food and beverage industry
Filling and packaging machinery
Dosing and metering technology
Liquid level measurement
Applications prone to pressure port clogging
Dimensions manufactory 4-20ma Flush Diaphragm Pressure Transmitter

| Product model | |||||||
| Model | YD-34 | ||||||
| Range | K:0...X kPa; P: PSI; K: kPa,; B: bar; M:MPa; m: mH2O | ||||||
| Precision | 1: 0.25%FS 2: 0.5%FS; 3:0.1 | ||||||
| Output | A: 4-20mA V1: 0.5-4.5V; V2: 0-5V; V3: 1-5V; V4: 0-10V; ; S0: Other | ||||||
| Power | P1: 9-32VDC; P2:5VDC ; P3: 12-32VDC; P4: 3VDC; P0: others | ||||||
| Interface | 50.5mm clamp | ||||||
| Connection | W1:Hirschman W2:Directly wire W3:M12 plug | ||||||
| YD-34 | 100P | 1 | A | P1 | G1 | W1 | Vendor Code |
Selection tips manufactory 4-20ma Flush Diaphragm Pressure Transmitter
1. The tested medium should be compatible with the materials in contact with the product.
2. For other special requirements, please consult us and indicate what you need in theorders.