Speed Sensing

Does your Speed Sensor need service?

PJ Diesel Engineering A/S is a distributor and independent service facility for Woodward Inc.

Turbine safety
Reliable speed sensing is one of the most important functions in gas and steam turbine control and safety monitoring. With all the probe types available at Woodward, passive probes are often the best selection because of simplicity and their attractiveness for safety applications.


Magnetic Pickups / Proximity Probes

Speed sensing



Rotating machinery requires speed sensing for functional systems such as control, monitoring and safety. Speed sensing is accomplished using primarily passive magnetic pickups (MPUs) or active proximity probes. Magnetic pickups are commonly selected because of simplicity, reliability and low cost. MPUs are passive probes in the sense that there are no active signal conditioning electronics in the probe. Passive probes have variable signal outputs that depend on many factors and can be difficult to apply. Active probes such as Proximity sensors and other passive sensors with active signal conditioning integrated into the sensor are classified as active probes. Active probes usually have more consistent signal output because of the integrated electronics, but with the associated increase in complexity.


Speed Sensors

SIL-3 Safety System Sensor



These speed sensors are designed for use in SIL-3, SIL-2 or SIL-1 (Safety Integrity Level) rated turbine or engine safety systems. When applied with a SIL rated logic solver and final element, users can easily create an overspeed safety instrument function (SIF) which meets the required safety integrity level for the specific application.

PJ Diesel Engineering A/S is Woodward AISF Authorized Independent Service Facility and distributor for governors, actuators, and turbine valves in Denmark, Estonia, Faroe Islands, Finland, Greenland, Iceland, Latvia, Lithuania, Sweden, and coastal area of Poland for marine applications.


Our core competences

 We are specialised within the Woodward product range:

      • Governors and electronic controls
      • Gas and steam turbine control
      • Valve services
      • Industrial gas turbine control
      • Power management

Woodward supplies a range of products (controls, valves, actuators, safety systems, auxiliary, and combustion systems) for gas and steam turbines and compressors.

We strive to reduce total installed/operating cost and emissions while improving availability, efficiency, start performance and operating range. Woodward has the longest legacy of any control’s supplier in the industrial rotating equipment market. We continuously invest in bringing innovative solutions to real market needs. Our focus is on providing value to our original equipment manufacturer (OEM), packager and end user customers through combining our knowledge of controls, auxiliaries and combustion systems to drive optimization through simplification and integration


We offer service for all Large Engine Control Modules - Our Woodward trained, and certified service engineers and service partners can assist on short notice.


Circular flow and Exchange Service


Imagine a shared response program unlocking the value of unused assets and saving you from stockpiling key components for urgent repairs.

Within PJ Diesel Engineering A/S you can join services with other end-users minimizing stock expenses, and at the same time maintaining full flexibility and the advantage of externalizing the risks. Through our exchange program expensive individual ownership costs and delivery time is reduced with shared acknowledged access to key components.

Read more about our EXCHANGE SERVICE

Long- and short-term benefits


    • Improving service by enabling programmed maintenance and emergency response
    • Reduce dependency from shore facilities
    • Eliminate delivery time (Time required for repairs from shore)
    • Plug and play solutions
    • Risk reduction
    • Reduced operational cost
    • Elimination of expensive inventory
    • Fixed prices on exchange units - easy budget planning
    • 24 months liability for Shortages and Defects
    • High availability because of inventory at PJ Diesel Engineering A/S facilities
    • Not stocking expenses
    • No new unit investment
    • Full report and IMO/EAIAPP Validation
    • Repairable damages all included in SEU (Service Exchange Unit) A solution with no extra costs
    • Elevating from supplier to service partner (Trusted supplier)
    • Responsible and sustainable Supply Chain Management


A vast stock of genuine Woodward spares and Governor test stands

PJ Diesel Engineering A/S meet all the requirements for immediate service without delays. We further deliver field services for Woodward components for inspection, troubleshooting installation and commissioning.