Electrical measuring device for determining the thermal conductivity of gases
DE932089C
Fall bar with adjustable working capacity
DE920686C
Scale for electrical temperature measuring devices with moving coil measuring mechanism
DE931915C
Feedback for electrical temperature controllers working as two-point controllers
DE893371C
Measuring mechanism intended for point recorders with one-sided tension band suspension and tip guide
DE876371C
Device for reporting changes in the EMF setpoints of thermocouples and interruptions in the element circuit
DE821515C
Device for switching between measuring points of electrical measuring devices with zero point within the scale, mainly electrical two-way controller with zero point in the middle of the scale
DE925799C
Indirect controller with limit switching points
DE824365C
Electrical switchgear
DE747498C
Photoelectric alternating light colorimeter with automatic adjustment
DE748110C
Photoelectric control device
DE705019C
Safety device for electropneumatic control devices
DE742822C
Process for potentiometric measurement, registration or regulation of the pH value
DE738480C
Automatic safety contact direction for electrical control devices
DE728615C
Electrical controller for any physical condition
DE704769C
Resetting device for cross-coil instruments with a moving coil that effects resetting
DE693776C
Electrical measuring or control device as a contact instrument
DE696461C
Fall bow regulator with safety contact device
DE685677C
Device for changing the switching time on electrical devices and controllers
