HYDAC HDA 4400 Series Pressure Transmitter | HDA4444 HDA4446 Replacement

Model Number

HDA4445-A-0040-S00, HDA4446-A-0400-S00, HDA 4444-B-250-000

Product Description

Genlu Hydraulic proudly introduces the HDA 4400 Series high-precision industrial pressure transmitters. Engineered to serve as the critical sensing nerve-center in demanding industrial applications, this series provides a precise match for HYDAC technical standards, comprehensively covering the HDA4444, HDA4445, HDA4446, and HDA4414 model ranges. Whether replacing part number 907296 or custom configurations, Genlu ensures perfect compatibility. Genlu unequivocally guarantees 100% Drop-in Interchangeability in electrical interfaces (M12x1), measurement precision, electromagnetic interference (EMI) resistance, and mechanical installation dimensions. Backed by our uncompromising 100% Simulation Load Testing, each unit is validated for performance stability under high-pressure impulses and temperature-drift resistance, ensuring relentless, real-time, and high-accuracy pressure data feedback for your hydraulic circuits.

Technical Specifications 

  • Product Series: HYDAC HDA 4400 Series Pressure Transmitter

  • Representative Models: HDA4444-B-250-000, HDA4446-A-0400-S00, HDA4445-A-0040-S00

  • Measurement Range: 0 – 40 bar to 0 – 600 bar (Model-dependent)

  • Accuracy: ±0.5% FS (Typical)

  • Output Signal: 4-20 mA (2-wire) or 0-10V (3-wire)

  • Electrical Connection: M12x1 connector, 4-pole

  • Pressure Port: G1/4 A or ISO 228

  • Housing Material: High-strength stainless steel, IP67 protection class

Key Technical Advantages:

  • Superior Pulse-Resistance: Engineered to withstand the high-frequency pressure spikes generated by hydraulic pump switching and valve operations. Our integrated damping chamber design filters out high-frequency noise while preserving real-time accuracy.

  • Excellent Thermal Compensation: Features an integrated high-precision temperature sensor that automatically compensates for zero-point drift caused by ambient temperature fluctuations, maintaining superb linearity and consistency in hot oil environments.

  • Advanced Electromagnetic Compatibility (EMC): Designed with shielded circuitry to ensure error-free operation in high-EMI industrial environments (near VFDs or large motors), eliminating signal fluctuation and false alarms.

  • Robust Stainless Steel Housing: Corrosion-resistant stainless steel construction offers exceptional mechanical strength and chemical compatibility, ensuring stable performance in harsh outdoor construction sites or marine environments.

Application Areas:

  • Industrial Hydraulic Power Units (HPUs): Real-time system pressure monitoring and filter clogging feedback.

  • Injection Molding Machines: Closed-loop control for injection and packing pressure profiles.

  • Mobile Construction Machinery: Load-sensing system feedback and main drive line monitoring.

  • Wind & Power Equipment: Gearbox lubrication pressure monitoring and hydraulic pitch system control.

Expert Maintenance Tips:

  • Installation Best Practices: Never use the pressure transmitter body as a torque point during installation; always apply the wrench to the hexagonal base section. Applying torque to the body can distort the internal membrane, causing permanent zero-point drift.

  • Wiring Standards: To maximize signal integrity, route signal cables away from high-power supply lines and ensure the cable shielding is securely grounded.

  • Contamination Check: For hydraulic systems prone to metal dust or sludge accumulation, perform a bi-annual check of the pressure port. Keeping the inlet clear ensures the membrane remains sensitive to pressure changes.

Related Models:

HDA 4445-A-250-000
HDA 348-5-250-000
HDA 3744-C-100-000
HDA 3744-C-250-000
HDA 3745-A-160-174
HDA 3745-A-250-174
HDA3844-A-006-000
HDA3844-A-016-000
HDA3844-A-060-000
HDA3844-A-100-000
HDA3844-A-250-000
HDA3844-A-400-000
HDA3844-A-600-000
HDA3844-B-006-000
HDA3844-B-016-000
HDA3844-B-060-000
HDA3844-B-100-000
HDA3844-B-250-000
HDA3844-B-400-000
HDA3844-B-600-000
HDA3844-E-006-000
HDA3844-E-016-000
HDA3844-E-060-000
HDA3844-E-100-000
HDA3844-E-250-000
HDA3844-E-400-000
HDA3844-E-600-000
HDA3845-A-006-000
HDA3845-A-016-000
HDA3845-A-060-000
HDA3845-A-100-000
HDA3845-A-250-000
HDA3845-A-400-000
HDA3845-A-600-000
HDA3845-B-006-000
HDA3845-B-016-000
HDA3845-B-060-000
HDA3845-B-100-000
HDA3845-B-250-000
HDA3845-B-400-000
HDA3845-B-600-000
HDA3845-E-006-000
HDA3845-E-016-000
HDA3845-E-060-000
HDA3845-E-100-000
HDA3845-E-250-000
HDA3845-E-400-000
HDA3845-E-600-000
HDA 3845-A-400-000
HDA 3845-B-400-000
HDA 4444-A-400-000 HYDAC
HDA 4444-A-400-000+ZBE02
HDA 4444-A-600-000+ZBE02
HDA 4444-B-060-000
HDA 4445-A-016-000
HDA4444-A-016-000
HDA4444-A-060-000
HDA4444-A-100-000
HDA4444-A-250-000
HDA4444-A-400-000
HDA4444-A-600-000
HDA4444-B-016-000
HDA4444-B-060-000
HDA4444-B-100-000
HDA4444-B-250-000
HDA4444-B-400-000
HDA4444-B-600-000
HDA4445-A-016-000
HDA4445-A-060-000
HDA4445-A-100-000
HDA4445-A-250-000
HDA4445-A-400-000
HDA4445-A-600-000
HDA4445-B-016-000
HDA4445-B-060-000
HDA4445-B-100-000
HDA4445-B-250-000
HDA4445-B-400-000
HDA4445-B-600-000
HDA4744-A-006-000
HDA4744-A-016-000
HDA4744-A-060-000
HDA4744-A-100-000
HDA4744-A-250-000
HDA4744-A-400-000
HDA4744-A-600-000
HDA4744-B-006-000
HDA4744-B-016-000
HDA4744-B-060-000
HDA4744-B-100-000
HDA4744-B-250-000
HDA4744-B-400-000
HDA4744-B-600-000
HDA4745-A-006-000
HDA4745-A-016-000
HDA4745-A-060-000
HDA4745-A-100-000
HDA4745-A-250-000
HDA4745-A-400-000
HDA4745-A-600-000
HDA4745-B-006-000
HDA4745-B-016-000
HDA4745-B-060-000
HDA4745-B-100-000
HDA4745-B-250-000
HDA4745-B-400-000
HDA4745-B-600-000
HDA3800-A-250-124
HDA3800-A-350-124
HDA3800-A-600-124
HDA3800-E-250-124
HDA3800-E-350-124
HDA3800-E-600-124
HDA3840-A-250-124
HDA3840-A-350-124
HDA3840-A-600-124
HDA3840-E-250-124
HDA3840-E-350-124
HDA3840-E-600-124
EDS344-2-016-000
EDS344-2-040-000
EDS344-2-100-000
EDS344-2-250-000
EDS344-2-400-000
EDS344-2-600-000
EDS344-3-016-000
EDS344-3-040-000
EDS344-3-100-000
EDS344-3-250-000
EDS344-3-400-000
EDS344-3-600-000
EDS345-1-016-000
EDS345-1-040-000
EDS345-1-100-000
EDS345-1-250-000
EDS345-1-400-000
EDS345-1-600-000
EDS346-1-016-000
EDS346-1-040-000
EDS346-1-100-000
EDS346-1-250-000
EDS346-1-400-000
EDS346-1-600-000
EDS346-2-016-000
EDS346-2-040-000
EDS346-2-100-000
EDS346-2-250-000
EDS346-2-400-000
EDS346-2-600-000
EDS346-3-016-000
EDS346-3-040-000
EDS346-3-100-000
EDS346-3-250-000
EDS346-3-400-000
EDS346-3-600-000
EDS348-5-016-000
EDS348-5-040-000
EDS348-5-100-000
EDS348-5-250-000
EDS348-5-400-000
EDS348-5-600-000
EDS3116-1-0001-000
EDS3116-1-0010-000
EDS3116-1-0016-000
EDS3116-2-0001-000
EDS3116-2-0010-000
EDS3116-2-0016-000
EDS3116-3-0001-000
EDS3116-3-0010-000
EDS3116-3-0016-000
EDS3118-5-0001-000
EDS3118-5-0010-000
EDS3118-5-0016-000
EDS3316-1-0001-000
EDS3316-1-0010-000
EDS3316-1-0016-000
EDS3316-2-0001-000
EDS3316-2-0010-000
EDS3316-2-0016-000
EDS3316-3-0001-000
EDS3316-3-0010-000
EDS3316-3-0016-000
EDS3318-5-0001-000
EDS3318-5-0010-000
EDS3318-5-0016-000
EDS3316-1-0001-000
EDS3316-1-0010-000
EDS3316-1-0016-000
EDS3446-1-0040-000
EDS3446-1-0100-000
EDS3446-1-0250-000
EDS3446-1-0400-000
EDS3446-1-0600-000
EDS3446-2-0040-000
EDS3446-2-0100-000
EDS3446-2-0250-000
EDS3446-2-0400-000
EDS3446-2-0600-000
EDS3346-2-0001-000
EDS3346-2-0010-000
EDS3346-2-0016-000
EDS3346-3-0001-000
EDS3346-3-0010-000
EDS3346-3-0016-000
EDS3446-3-0040-000
EDS3446-3-0100-000

Company Profile

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Frequently Asked Questions

1.Hydraulic pump
2.Hydraulic valve
3.Hydraulic motor
4.Hydraulic cylinder
5.Hydraulic parts

MOQ: 1pcs— we support sample and small quantity orders.
  • Adhere to quality first.
  • Support customization, ODM & OEM service.
  • 1-year warranty and complete after-sales support.
  • Safe and fast shipping worldwide.
  • 24-hour online service for your inquiries. 
 
Yes, we are a manufacturer with our own factory.
Common models are in stock, and orders are usually shipped within 1–3 days.
We accept T/T, L/C, PayPal, VISA, Western Union, Apple Pay, Google Pay, Afterpay (Clearpay), Klarna, and Trade Assurance.
 
For full orders: 30% deposit, balance before shipment.
For small/sample orders: full payment in advance.
We offer flexible shipping options: DHL, UPS, FedEx, TNT, EMS, as well as air or sea freight.
 
All deliveries ensure door-to-door fast and safe service.
 
All products are tested before shipment to ensure perfect working condition.
 
We offer a 12-month warranty — if a product fails due to quality issues, we provide free spare parts or repair support.
 
If you encounter any problem during use, please contact your sales manager or our support team at any time.
 
We will respond quickly and help solve the issue efficiently.
  • Hydraulic systems
  • Agricultural machinery
  • Construction machinery
  • Automobile industry
  • Local distributors and maintenance centers 
Yes. We offer competitive wholesale prices and try our best to give benefits to long-term partners.
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