Hydac sensor HDA4840-A-400-424

Hydac sensor HDA4840-A-400-424

HDA4840-A-400-424 is a high-precision industrial pressure sensor launched by HYDAC (Hedec) in Germany. It belongs to the HDA 4800 series and is designed for harsh industrial environments such as metallurgy, mining, and engineering machinery. It uses stainless steel thin film DMS (resistance strain gauge) sensing technology to achieve stable and accurate gauge pressure measurement, and is core compatible with hydraulic system pressure monitoring, equipment status diagnosis, and other scenarios.
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（2） Core technical parameters
Measurement type: Relative pressure (gauge pressure)
Measurement range: 0~400 bar
Overload pressure: 1.5 times rated range (600 bar)
Destructive pressure: 3 times rated range (1200 bar)
Accuracy level: Typical ± 0.125% FS, maximum ± 0.25% FS
Output signal: 4~20 mA (2-wire analog signal)
Supply voltage: 10-30 VDC
Response time: ≤ 1 ms (typical value)
Long term stability: ≤± 0.1% FS/year
Mechanical connection: G1/4 A ISO 1179-2 (external thread)
Electrical connection: 10 meter standard shielded cable (customizable to 6 meters)
Protection level: IP65 (cable outlet)
Working temperature: -25 ℃~+85 ℃
Vibration resistance: ≤ 20 g (10-2000 Hz)
Impact resistance: 50 g/11 ms
Material: Sensor diaphragm 1.4571 stainless steel, shell made of all stainless steel
Product certification: UL certification, CE certification
Material item number: 925597
（3） Structure and Technical Characteristics
High precision DMS sensing technology
Stainless steel film substrate integrated with high-sensitivity resistance strain gauges, precise pressure electrical signal conversion, extremely low temperature drift (zero and range temperature drift ≤± 0.01% FS/℃), avoiding measurement errors caused by environmental temperature fluctuations.
All metal sturdy structure
Laser welding sealing process, no O-ring design, eliminates the risk of medium leakage; The all stainless steel shell is corrosion-resistant and wear-resistant, suitable for harsh working conditions such as acidity, high humidity, and high dust.
Strong anti-interference ability
Double layer shielded cable (aluminum foil+braided mesh)+internal EMC protection circuit, resistant to strong electromagnetic interference from frequency converters, motors, etc., stable signal transmission, fluctuation<± 0.2% FS.
Long lifespan and high reliability
MTBF (average time) exceeds 50000 hours, with no vulnerable parts, low maintenance costs, and suitable for continuous operation of industrial production lines.
Easy installation
Standard G1/4 threaded interface, compatible with mainstream hydraulic pipelines; A 10 meter long cable is suitable for long-distance wiring and supports direct access to systems such as PLCs and industrial control instruments.
（4） Applicable media
Non corrosive fluids such as mineral oil, synthetic hydraulic oil, emulsion, water, gas, etc. (suitable for hydraulic, pneumatic, lubrication systems)
（5） Typical application scenarios
Metallurgical industry: hydraulic pressing system for rolling mill, cooling circuit for continuous casting machine, hydraulic device for heating furnace
Construction machinery: hydraulic system pressure monitoring for excavators, loaders, and cranes
Industrial equipment: Injection molding machines, die-casting machines, machine tool hydraulic station pressure closed-loop control
Mining machinery: hydraulic system status diagnosis of coal mining machine and tunneling machine
Power industry: Monitoring of lubricating oil and hydraulic control system for steam turbine generator sets

Hydac sensor HDA4840-A-400-424

HDA4840-A-010-424
HDA4840-A-025-424
HDA4840-A-040-424
HDA4840-A-060-424
HDA4840-A-100-424
HDA4840-A-160-424
HDA4840-A-250-424
HDA4840-A-400-424 (target model)
HDA4840-A-600-424
HDA4840-A-010-124
HDA4840-A-025-124
HDA4840-A-100-124
HDA4840-A-250-124
HDA4840-A-400-124
HDA4820-A-400-424 (6m cable)
HDA4820-A-600-424 (6m cable)
HDA4870-A-060-424
HDA4870-A-100-424
HDA4870-A-250-424
HDA4870-A-400-424
（2） HDA 4700 series (industrial standard pressure sensor)
HDA4745-A-010-000
HDA4745-A-025-000
HDA4745-A-060-000
HDA4745-A-100-000
HDA4745-A-250-000
HDA4745-A-400-000
HDA4746-A-010-000
HDA4746-A-100-000
HDA4746-A-250-000
HDA4746-A-600-000
（3） HDA 4400 series (economical pressure sensor)
HDA4445-A-010-000
HDA4445-A-025-000
HDA4445-A-060-000
HDA4445-A-100-000
HDA4445-A-250-000
HDA4445-A-400-000
HDA4446-A-010-000
HDA4446-A-100-000
HDA4446-A-250-000
HDA4446-A-400-000
（4） HDA 3800 series (compact pressure sensor)
HDA3840-A-010-124
HDA3840-A-025-124
HDA3840-A-060-124
HDA3840-A-100-124
HDA3840-A-250-124
HDA3840-A-350-124
HDA3840-A-400-124
HDA3841-A-010-124
HDA3841-A-100-124
HDA3841-A-250-124