HYDAC HDA 4445-A-400-000 Pressure Transmitter

Product Name: HYDAC HDA 4445-A-400-000 Pressure Transmitter
Model Number: HDA 4445-A-400-000
HYDAC Part Number: 906209
Brand: HYDAC
Series: HDA 4400
Product Type: Electronic Pressure Transmitter / Hydraulic Pressure Sensor

Important: Although this product is sometimes searched for or referred to as a “HYDAC pressure switch,” the official HYDAC catalog identifies HDA 4445-A-400-000 as an Electronic Pressure Transmitter, not a conventional pressure switch. (HYDAC Technology Corporation)

Product Details

The HYDAC HDA 4445-A-400-000 is an electronic pressure transmitter from the HYDAC HDA 4400 series. It is designed for measuring relative pressure in hydraulic and pneumatic systems.

The transmitter uses a thin-film strain gauge measuring cell on a stainless-steel membrane. The measured pressure is converted into a proportional 4–20 mA analogue output signal, allowing the transmitter to be connected to PLCs, measurement equipment and industrial control systems. (HYDAC Technology Corporation)

The official HYDAC catalog identifies HDA 4445-A-400-000 with HYDAC part number 906209. (HYDAC Technology Corporation)

Description

The HYDAC HDA 4445-A-400-000 400 bar pressure transmitter is suitable for industrial hydraulic and pneumatic pressure monitoring applications where a reliable analogue pressure signal is required.

Its 4–20 mA output makes it suitable for integration with PLC control systems and other standard evaluation devices. HYDAC states that the HDA 4400 series is intended for applications in mobile hydraulics, industrial hydraulics and pneumatics. (HYDAC Technology Corporation)

For customers searching for a HYDAC 400 bar pressure switch, pressure sensor, pressure transducer or pressure transmitter, this model may be relevant when the required application uses an analogue 4–20 mA pressure signal.

Verified Specifications

Specification	Details
Brand	HYDAC
Series	HDA 4400
Model	HDA 4445-A-400-000
HYDAC Part Number	906209
Product Type	Electronic Pressure Transmitter
Measuring Range	0–400 bar
Output Signal	4–20 mA
Number of Conductors	2
Mechanical Connection	G1/4 A, ISO 1179-2, Male
Electrical Connection	Male, 3 Pole + PE, EN175301-803
Mating Connector	Supplied
Seal Material	FKM / Fluorocarbon Elastomer
Supply Voltage*	8–30 V DC
Residual Ripple	≤ 5%
Torque Value	20 N·m
Life Expectancy	>10 million cycles, 0–100% FS

These specifications are based on HYDAC's official product information for part number 906209. (HYDAC Technology Corporation)

*The 8–30 V DC value shown by HYDAC is specified for application according to its UL specifications. Verify the latest manufacturer documentation for the complete installation requirements. (HYDAC Technology Corporation)

Key Features

• HYDAC HDA 4400 series

• Model HDA 4445-A-400-000

• HYDAC part number 906209

• 0–400 bar measuring range

• 4–20 mA analogue output

• 2-conductor configuration

• G1/4 A ISO 1179-2 male connection

• EN175301-803 electrical connection

• Stainless-steel measuring membrane

• Thin-film strain gauge measuring cell

• FKM sealing material

• Suitable for PLC-based pressure monitoring

• Designed for hydraulic and pneumatic applications

• Compact electronic pressure measurement solution (HYDAC Technology Corporation)

Applications

The HYDAC HDA 4445-A-400-000 can be considered for:

• Hydraulic power units

• Hydraulic machinery

• Industrial hydraulic systems

• Mobile hydraulic equipment

• Hydraulic pump systems

• Hydraulic pressure monitoring

• Pneumatic systems

• Industrial automation

• PLC pressure monitoring

• OEM machinery

• Manufacturing equipment

• Construction machinery

• Palm oil mill machinery

• Mining equipment

• Marine and industrial equipment

HYDAC identifies the HDA 4400 series for mobile or industrial hydraulics and pneumatics. (HYDAC Technology Corporation)

How Does the HDA 4445-A-400-000 Work?

The transmitter senses hydraulic or pneumatic pressure through its pressure measurement cell. The thin-film strain gauge converts the mechanical pressure into an electrical signal, and the electronics provide a proportional 4–20 mA output.

In a typical PLC application:

Pressure → HDA 4445-A-400-000 → 4–20 mA signal → PLC / Controller → Monitoring or Control

This makes it useful where the control system needs continuous pressure feedback rather than a simple ON/OFF pressure-switch signal. (HYDAC Technology Corporation)

Pressure Switch vs Pressure Transmitter

This distinction is important when customers are searching for this product.

Product	Function
Pressure Switch	Normally switches an electrical contact at a defined pressure point
Pressure Transmitter	Measures pressure and provides a proportional electrical output
HDA 4445-A-400-000	Electronic Pressure Transmitter with 4–20 mA output

Therefore, HDA 4445-A-400-000 should be marketed primarily as a HYDAC pressure transmitter / pressure sensor / pressure transducer, while “HYDAC pressure switch” can be retained as a search keyword to capture customers using that terminology.

Related HDA 4445 Models

HYDAC's HDA 4400 catalog lists several HDA 4445-A variants with different measuring ranges. Examples include: (HYDAC Technology Corporation)

• HDA 4445-A-016-000

• HDA 4445-A-060-000

• HDA 4445-A-100-000

• HDA 4445-A-160-000

• HDA 4445-A-250-000

• HDA 4445-A-400-000

• HDA 4445-A-600-000

There are also HDA 4445 variants with different suffixes and configurations. Do not substitute one model for another without checking the complete HYDAC model code, because pressure range, electrical configuration and other characteristics can differ. (HYDAC Technology Corporation)

Alternative / Related Products

Depending on the customer's application, related HYDAC HDA 4400 products may include:

• HDA 4445-A series — 4–20 mA configuration

• HDA 4445-B series — 0–10 V configuration

• HDA 4446 series — alternative electrical connection configuration

• HDA 4400 series — electronic pressure transmitters

The exact replacement or alternative should always be selected based on pressure range, output signal, mechanical connection, electrical connection and application requirements. (HYDAC Technology Corporation)

FAQ

What is HYDAC HDA 4445-A-400-000?

It is a HYDAC HDA 4400 electronic pressure transmitter with a 0–400 bar measuring range and 4–20 mA output. (HYDAC Technology Corporation)

Is HDA 4445-A-400-000 a pressure switch?

Technically, no. HYDAC classifies it as an Electronic Pressure Transmitter. It provides a continuous 4–20 mA analogue pressure signal rather than operating as a conventional switching-contact pressure switch. (HYDAC Technology Corporation)

What is the pressure range?

The specified measuring range is 0–400 bar. (HYDAC Technology Corporation)

What is the output signal?

The output signal is 4–20 mA with a 2-conductor configuration. (HYDAC Technology Corporation)

What is the HYDAC part number?

The HYDAC part number associated with HDA 4445-A-400-000 is 906209. (HYDAC Technology Corporation)

What is the connection size?

The mechanical connection is G1/4 A according to ISO 1179-2, male. (HYDAC Technology Corporation)

Can it be connected to a PLC?

Yes. HYDAC states that the 4–20 mA output enables connection to standard evaluation systems such as PLC controls. (HYDAC Technology Corporation)

What industries use HYDAC pressure transmitters?

Typical applications include industrial hydraulics, mobile hydraulics and pneumatics, with potential applications in machinery, OEM equipment and industrial automation. (HYDAC Technology Corporation)

Is HDA 4445-A-400-000 suitable as a direct replacement for another HYDAC pressure sensor?

Not automatically. The complete model code should be compared, including measuring range, output, pressure connection and electrical connection before selecting a replacement.

---

WooCommerce SEO

SEO Product Name:
HYDAC HDA 4445-A-400-000 Pressure Transmitter 400 Bar 4-20mA

Meta Title:
HYDAC HDA 4445-A-400-000 Pressure Transmitter 400 Bar

Meta Description:
HYDAC HDA 4445-A-400-000 pressure transmitter, 0–400 bar, 4–20 mA output, G1/4 connection. HYDAC part no. 906209. Enquire with ASIA-MECH Malaysia.

Primary SEO Keyword:
HYDAC HDA 4445-A-400-000

Secondary SEO Keywords:

• HDA4445-A-400-000

• HYDAC HDA 4445

• HYDAC pressure transmitter

• HYDAC pressure sensor

• HYDAC pressure transducer

• HYDAC 400 bar pressure transmitter

• HYDAC 4-20mA pressure transmitter

• HYDAC 906209

• HDA 4400 pressure transmitter

• hydraulic pressure transmitter

• hydraulic pressure sensor Malaysia

• hydraulic pressure transducer Malaysia

• HYDAC pressure switch Malaysia

• 400 bar pressure sensor

• 4-20mA pressure sensor Malaysia

• industrial pressure transmitter Malaysia

• hydraulic sensor supplier Malaysia

Recommended WooCommerce Category

Hydraulic Components → Hydraulic Sensors & Instrumentation → Pressure Transmitters

Possible secondary category:

Industrial Automation Components → Pressure Sensors

Product Search Terms / Model Numbers

HDA4445-A-400-000 | HDA 4445-A-400-000 | 906209 | HYDAC HDA 4445 | HYDAC HDA 4400 | HYDAC Pressure Transmitter | HYDAC Pressure Sensor | HYDAC Pressure Transducer | 400 Bar Pressure Transmitter | 4-20mA Pressure Transmitter

ASIA-MECH HYDRO-PNEUMATIC (M) SDN BHD

ASIA-MECH HYDRO-PNEUMATIC (M) SDN BHD supplies hydraulic, pneumatic and industrial automation components for manufacturing, construction, palm oil mills, mining, marine and OEM machine-building applications.

We provide product sourcing and direct ordering support for genuine and aftermarket hydraulic and pneumatic components, with delivery services covering Malaysia and international destinations.

Tel: 05-282 1518 / +60 16-550 2288
Mobile / WhatsApp: +60 16-550 2288
Email: asiamech88@gmail.com

Delivery throughout Malaysia, including Perak, Penang, Kedah, Perlis, Selangor, Kuala Lumpur, Johor, Pahang, Melaka, Kelantan, Sabah and Sarawak, with international enquiries also welcome.

Datasheet / Catalog: Customers should request the latest HYDAC datasheet or catalog and verify the complete model code before ordering.

Official HYDAC reference: HYDAC HDA 4445-A-400-000 / Part Number 906209

Important: Technical specifications above are based on HYDAC's published information. For replacement, compatibility or ordering, the complete part/model code should be checked against the customer's existing unit and application.