About us

Welcome at Contell Asset Support

Contell makes sure that automation functions and keeps on doing so. We repair, maintain, test and manage equipment in electronic automation systems that controls existing hardware. Of course, we make sure that new systems operate reliably, but we are particularly focused on older installations. Contell has unique knowledge and longtime experience with the systems that are no longer supported by their manufacturers.


Contell is specialized in maintaining automation systems of industry and buildings.

Building automation

From indoor climate control to access management systems for homes and building automation, Contell guarantees reliable operation. This includes also systems no longer supported by the manufacturer. Contell is particularly experienced in working with these. Our testing system setup with older equipment is unique. It allows us to test and perform simulations with your system. This is how we make sure your instruments continue to function reliably. Contell does not perform installation work, but businesses that do, can count on us for the service and repair of the equipment they are installing and maintaining.

Industrial automation

You also know how important it is for your automated process to work consistently Replacing hardware and/or software is often very costly. Contell makes sure the lifespan of your automated system is extended. We have years of experience with equipment which are no longer supported by the manufacturer. It is a unique business! Because of our extensive experience, we know when a part has reached the end of its lifespan. We will not only replace this part, we will also test and monitor all the other parts to guarantee problem-free functioning. Contell has a unique selection of older systems at its disposal to run test and simulation programs. In this way, risks are kept to a minimum.

Testing and measuring

Our extensive testing and measuring facilities will provide perfect diagnostics. In addition, because of our experience with your system, we know which parts have reached the end of their practical lifespan. Our maintenance services therefore provide maximum security through preventative replacement
, equipment refurbishment
, placing replacement equipment, testing with one year warranty
, measurements
, diagnoses
, programming (E)proms
 and maintenance contracts.

Parts Logistics and maintenance services

Besides the capability to execute your normal order perfectly, Contell also offers parts and maintenance services. This means we keep your spare parts in stock, and deliver within 24 hours. Your costs will reduce significantly, and stagnation risk levels are kept to a minimum. Other services are helpdesk via telephone and email, order tracking, emergency shipments
 and equipment rentals.

Repairing products

Products and systems are repaired both electronically as well as mechanically. This includes repairing at parts level (traditional and SMD) repairs.

Repair Honeywell products

Instruments are repaired mechanically and electronically. We also do repairs at parts level (traditional and SMD) such as Honeywell recorders (DPR, VP121, VP131, Miniprint, Servoline Amplifier)
, Honeywell transmitters and communicators (ST3000, STT 300, SFC, CL141)
, Honeywell controllers (AL/CL, CL74, CL84, CL94, UDC, Minipak, Vumatic)
, PLC systems (IPC 90, 300, 620), Siemens S5, Staefa, Landis & Gyr, DCS systems (TDC 3000, LCN), safety barriers (also for rent), E/P positioners. Peripherals, printers, monitors, keyboards, power supplies.


Contell stocks and sells new and refurbished products and parts for Honeywell systems, such as EXCEL Classic, EXCEL 5000, HPEP, Deltanet, IRC and MIC 100.


Our refurbished products and systems have been tested extensively, that is why we can offer one year warranty, as we do for new products and parts. Our offering includes Honeywell TDC Controllers
, Basic (spare) controllers, Extended (reserve) controllers, multifunction (reserve) controllers, high level PIU’s, low level PIU’s, low energy PIU’s, battery back-up, highway traffic director (HTD), data highway port (DHP), auxiliary file cards. Peripherals, keyboards, disc drives, screens, printers, Programmable Logic Controller (PLC)
, IPC 300, IPC 600, Series 9000

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*click on the IPC or ISO logo to view the certificate

If you have any questions about repair or obsolete parts please contact us.