Hydac HPT 1448S-F11-0400-000 Smart CANopen Pressure Transmitter

A CANopen pressure transmitter that records its own operating history

The Hydac HPT 1448S-F11-0400-000 (HYDAC part number 928311) is a smart pressure transmitter from the HPT 1400S series. It outputs the pressure over CANopen, so it plugs into a CAN bus without an analogue input card, and it keeps a non-volatile record of how it has been used: operating hours, device temperature, minimum, maximum and average pressure, overload events and a usage profile across the measuring range.

The parts that touch the fluid are stainless steel and welded together, so there are no seals inside the sensor and no leakage path. The 0.5 mm orifice in the G1/4 A port is part of the connection.

Technical specifications

Smart data for service planning

The logged information can be read through the CAN bus, with a HYDAC HMG 4000 data recorder or with a PC. It allows a maintenance planner to see whether a machine was repeatedly overloaded, how many hours the pump line ran at high pressure, and the device temperature history. That is useful for warranty analysis and for load-dependent service intervals on mobile machines and test rigs.

Code decoding and bus settings

HPT 14XXS – F11 – XXXX – 000: the first 4 is the G1/4 A port with 0.5 mm orifice, 8 is the five-pole M12x1 plug, S marks the smart version, F11 selects CANopen, 0400 is the range in bar and 000 the standard modification. Available ranges are 16, 25, 40, 60, 100, 160, 250, 400 and 600 bar. Baud rates from 10 kbit/s to 1 Mbit/s are supported with automatic detection; node ID and baud rate are set through the manufacturer-specific profile. Analogue and IO-Link smart versions exist as separate datasheets.

Plan the CAN wiring with the pin allocation of the five-pole M12 plug (shield, supply, ground, CAN_H and CAN_L), terminate the bus correctly, and confirm the node ID before commissioning.

The smart version carries a digital CANopen interface, so it needs a network address, baud rate and a configuration tool at commissioning rather than a plain analog connection. Ask for the interface manual with your order if your controller engineers need to configure it.

Documents and quotation

The CANopen datasheet (status 2019-07-05) is attached. Please quote the full code and bus requirements. See also our pressure instrumentation range.

How the HPT 1448S-F11-0400-000 works

Like most HYDAC pressure transmitter series, the HPT 1400S is built around a robust, long-life thin-film sensor. Pressure acting on the stainless steel measuring cell changes the resistance of the strain-gauge bridge deposited on it. The on-board electronics digitise this value and publish it to the CAN field bus through the CANopen protocol, so the controller receives the measured pressure as a 16-bit, 32-bit or floating-point value together with a status word, without any analogue-to-digital conversion on the controller side.

Process data (the live pressure), condition data and smart data are handled separately. The HPT 1448S-F11-0400-000 keeps operating-data logs that can be reset by the user as well as logs that persist over the whole life cycle of the device. The Arrhenius value records a temperature-compensated operating time, which helps estimate how much thermal stress the electronics have actually seen, not just how many hours they have run.

CANopen protocol data

Selection & ordering guide

The 400 bar range of this model suits most hydraulic working circuits on mobile and industrial machines. If the system pressure is lower, choosing a smaller range gives better resolution, because accuracy is stated as a percentage of full scale. The overload and burst limits of each range in the HPT 1400S CANopen series are:

A 160 bar range is also listed in the model code. Pressure peaks from valve switching or load impacts can exceed the nominal working pressure, so check that the expected peaks stay below the overload figure. The long-term drift is stated as ±0.2 % FS typical per year and the temperature effect on zero and span as ±0.0125 %/°C typical, ±0.025 %/°C maximum.

Installation & maintenance

• Tighten the G1/4 A port to the recommended 20 N·m and use the FKM profile seal supplied with the connection. The standard fluid-temperature limit with FKM is −25 °C; −40 °C is available on request.
• Wire the five-pole M12×1 plug as pin 1 shield/housing, pin 2 +UB, pin 3 0 V/GND, pin 4 CAN_H and pin 5 CAN_L. IP 67 is only reached with a mating connector of the same protection class fitted.
• Supply 9 to 35 V DC with no more than 5 % residual ripple. Reverse-polarity, over-voltage, override and short-circuit protection are built in.
• Terminate both ends of the CAN bus and give every node a unique ID before you start the network.
• Read the logged min/max values and overload counters during scheduled service. Repeated overloads point to pressure peaks that should be investigated before they damage pumps, hoses or the sensor.

Typical applications in Oman & the GCC

HYDAC developed the HPT 1400S for series applications and for installations with very limited space. In the region this covers mobile hydraulics on cranes, construction and mining equipment, waste-collection vehicles and agricultural machinery, as well as compact power units, test rigs and industrial hydraulic systems in oil and gas, ports and manufacturing. The fluid temperature rating up to +125 °C and operating range up to +100 °C give margin in hot desert conditions, where hydraulic oil and engine bays run hot during summer.

Why source from Seven Star LLC

Seven Star LLC supplies HYDAC sensors and hydraulic components across Oman and the GCC. Send us the full code, HPT 1448S-F11-0400-000, with the quantity and any connector or cable requirements, and request a quote. Our team can help confirm the correct ordering code if you are replacing an existing transmitter or need a different range or output.