DH

Measuring devices and apparatuses, particularly for measuring pressure, absolute pressure, differential pressure, temperature, density, [ pH value, ] quantity, particularly flow rate, humidity, force, acceleration, distance, angle, speed, density or level, filling level, namely, pressure gauges, combined pressure and vacuum gauges, barometers, altimeters, thermometers, thermo-hydrometers, hydrometers, pressure-measuring sensors, flow meters, [ measuring instruments in the nature of diaphragm seals for measuring for measuring pressure and water pressure; measuring devices for cooling devices, namely, pressure gauges for air conditioners, thermometers for refrigerators; leak detectors, namely, leak detectors for vacuum pumps, leak detectors for refrigeration, heating, ventilation, air conditioning and cooling equipment; metal measuring orifice plates; ] measurement recorders for measuring devices, namely, electronic data loggers; transducers; electronic transducers, electric transducers with electronic output signal, namely, pressure transducers, differential pressure transducers, level measuring transducers; electronic apparatus, namely, remote electronic display screens, electronic apparatus, namely, remote electric luminescent display panels; electronic control and feedback control devices for oil and gas, flow monitors for fluids, gases, and particles; electrical relays, electrical contactors/contact makers, electrical switches; position regulators for electronic control devices; pressure controllers for fluids or gases; electrotechnical and fluidic devices and apparatuses, namely, electrical power supply units, electric amplifiers, electrical circuits, electrical switching elements and recording devices; calibrators and calibrating devices, namely, pressure scales; electric switches, particularly pressure switches, limit-value switches, [ level switches, contact-free operable magnetic switches, switches operable optically, inductively and capacitively, electric switches designed as float switches, as motion/running sensors, as indicators of metals present; electric switching devices for the level control of liquids on the basis of the electric conductivity of the liquid in question; ] test benches comprised of pressure testing and temperature testing equipment for calibrating of valves, sensors and cylinders and for use in testing the performance of valves and pipes; electronic apparatus for testing aeronautic engines and aircraft piston engine cylinder assemblies; electric time relays

Calibration and functional testing of measuring instruments