Image credits

The real photographs on this site come from Wikimedia Commons under free licences (CC / public domain). The author, licence and source link of every photograph are listed below.

Industrial PID controllers - front display.jpgAuthor: BitjungleLicence: CC BY-SA 4.0

FCN-RTU.jpgAuthor: EdverLicence: CC BY-SA 3.0

Simatic S7-1200.JPGAuthor: UlrichAABLicence: CC BY-SA 3.0

Siemens PS307 & ET 200M & DI & Profibus.JPGAuthor: Alf van BeemLicence: CC0

SIMATIC HMI.jpgAuthor: ZianManLicence: CC BY-SA 4.0

Chiller plant SCADA system.jpgAuthor: Rsparks3Licence: CC0

Variable Frequency Drive (VFD) - 3.jpegAuthor: Suyash.dwivediLicence: CC BY-SA 4.0

MITSUBISHI ELECTRIC INVERTER.jpgAuthor: AfandrfLicence: CC BY-SA 4.0

Siemens soft starter.jpgAuthor: ZianManLicence: CC BY-SA 4.0

Hunter Non-Programmable Digital Thermostat.jpgAuthor: Ente75Licence: CC0

PLC Panasonic FP-XH C30T.jpgAuthor: Angga Panca Alam AnugrahLicence: CC BY-SA 4.0

I3 Engineering Atom Hydrogen controller.jpgAuthor: I3mikevLicence: CC BY-SA 4.0

48 GPIO Ethernet interface.jpgAuthor: LambtronLicence: CC BY-SA 4.0

Panel CGO Line and CutOff Relays.jpgAuthor: No machine-readable author provided. Panel Switchman assumed (based on copyright claims).Licence: Public domain

A voltage controller.jpgAuthor: KIMO Industrie - Elektronik GmbHLicence: CC BY-SA 3.0

Siemens ESM TP80.JPGAuthor: MixabestLicence: Public domain

Super-duplex-valves-globe-valves.jpgAuthor: Heather SmithLicence: CC BY-SA 3.0

Three gate valves.jpgAuthor: BitjungleLicence: CC BY-SA 4.0

Vanne avec purge.JPGAuthor: The original uploader was F5ZV at French Wikipedia.Licence: CC BY-SA 3.0

Hastelloy Ball valve.jpgAuthor: HSLicence: CC BY 3.0

Hh-wasserventil2.jpgAuthor: User Staro1 on de.wikipediaLicence: CC BY-SA 3.0

Dhünntalsperre6.jpgAuthor: Morty at de.wikipediaLicence: CC BY-SA 3.0

Swing Check valves.JPGAuthor: Heather SmithLicence: CC BY 3.0

Двухстворчатый клапан 1.jpgAuthor: MicusLicence: CC BY-SA 3.0

Blue Grass Chemical Agent-Destruction Pilot Plant Control and Support Building (6377565343), valve.jpgAuthor: PEO ACWALicence: CC BY 2.0

Duisburg, Landschaftspark Duisburg-Nord -- 2020 -- 7803-5.jpgAuthor: Dietmar RabichLicence: CC BY-SA 4.0

Duisburg, Landschaftspark Duisburg-Nord -- 2020 -- 7824-6.jpgAuthor: Dietmar RabichLicence: CC BY-SA 4.0

Sunset-1270507, Leixlip, Co. Kildare, Ireland.jpgAuthor: LeimanbhradainLicence: CC BY-SA 4.0

Industrial pressure regulator.jpgAuthor: Alnitak3Licence: CC0

Safety Valves.jpgAuthor: FastLoeLicence: CC BY-SA 3.0

Control valves.jpgAuthor: BitjungleLicence: CC BY-SA 4.0

2019-05-19 (360) Rotary drive for gate valve from AUMA-Armaturenantriebe Ges.m.b.H. at Fischwanderhilfe Donaukraftwerk Melk, Austria.jpgAuthor: GT1976Licence: CC BY-SA 4.0

2019-05-19 (361) Rotary drive for gate valve from AUMA-Armaturenantriebe Ges.m.b.H. at Fischwanderhilfe Donaukraftwerk Melk, Austria.jpgAuthor: GT1976Licence: CC BY-SA 4.0

Mágnesszelep.jpgAuthor: InterCity(IC)Licence: CC BY-SA 4.0

Xerox ColorQube 8570 - print head - ASF Thomas pump with solenoid valve-91918.jpgAuthor: Raimond SpekkingLicence: CC BY-SA 4.0

Solenoid valve 2019.jpgAuthor: ToT89Licence: CC BY-SA 4.0

Class 2 Modulating Actuator.jpgAuthor: CmaatschLicence: CC BY-SA 3.0

Комплект термометров сопротивления.jpgAuthor: TeplouserLicence: CC BY-SA 4.0

Thermocouple K (2).jpgAuthor: HarkeLicence: Public domain

PRT Probes.jpgAuthor: Marián HubinskýLicence: CC BY-SA 4.0

Submersible pressure transducer for remote display P8160015.jpgAuthor: Peter SouthwoodLicence: CC BY-SA 4.0

Boso medicus control - controller - pressure measurement unit-0022.jpgAuthor: Raimond SpekkingLicence: CC BY-SA 4.0

Regolatore di pressione applicato ad impianto idraulico domestico.jpgAuthor: PROPOLI87Licence: CC BY-SA 4.0

Dial thermometer.jpgAuthor: Mike ShawLicence: CC BY-SA 4.0

Tetley's brewery, Leeds (10th May 2010) 008.jpgAuthor: Mtaylor848Licence: CC BY-SA 3.0

Fußbodenheizung Heizkreisverteiler Variotherm Durchflussmessgerät.jpgAuthor: Best Tech Nick 25Licence: CC0

Altensteig - Nagolder Straße - Kläranlage 06 ies.jpgAuthor: Frank VincentzLicence: CC BY-SA 3.0

Scambiatore calore pool.jpgAuthor: Francesco.BrocchiLicence: CC BY-SA 3.0

Kreiselpumpe-Elektromotor.jpgAuthor: HopuWikiLicence: CC BY-SA 4.0

Watts Potable Water Expansion Tank.jpgAuthor: Tony WebsterLicence: CC BY 2.0

Get Lost - Flickr - oasis.jpgAuthor: Van DoLicence: CC BY-SA 2.0

Automated needle valve with electric actuator.jpgAuthor: Ie editsLicence: CC BY-SA 4.0

Concrete mixing knot MZGBI.JPGAuthor: TdmzgbiLicence: CC BY-SA 4.0

Charge amplifier.jpgAuthor: JanBurgLicence: CC BY-SA 4.0

Oil terminal 02.jpgAuthor: VsatinetLicence: CC BY-SA 4.0

9568Baliuag, Bulacan Town Proper 14.jpgAuthor: JudgefloroLicence: CC0

PIN FIN TEST SECTION - DPLA - 4616ef7027990bad117f0c6e130fbd36.jpgAuthor: National Aeronautics and Space Administration. John H. Glenn Research Center at Lewis Field. 3/1/1999Licence: Public domain

Boiler room in Tula Oblast 02.jpgAuthor: Пресс-служба губернатора Тульской области.Licence: CC BY 4.0

Pinellas County Utilities Pump Station -055(1).JPGAuthor: Philipp Michel ReicholdLicence: CC BY-SA 4.0

4ГМ2,5-6,67-8-50С.JPGAuthor: Aleksey23Licence: CC BY-SA 3.0

Rostock Power Station, SW view.jpgAuthor: RadomianinChanges: colour grading and data graphics added by Cortergy (same licence)Licence: CC BY-SA 4.0