Tuning fork quartz manometer
AssigneeBalzers Aktiengesellschaft
InventorRudolf Stocker
Life of this patent
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Abstract
The tuning fork quartz manometer has a tuning fork quartz (2) mounted in a protective casing (3) which is in turn part of a self-oscillating feedback circuit. According to the invention the protective casing (3) is inserted by means of a sealing compound (4) or directly into a hosing (5) of a measuring head (1,6) or a mounting support (15a, 20') so that the mounting support can in turn be inserted in the measuring head (1,6) and, as desired, an ideal rigid or elastic suspension is provided. A measuring circuit (20) is located directly in the measuring head close to the tuning gork quartz (2) and is thermally coupled to the latter. The measuring circuit (20) preferably has a temperature correction network (R.sub.1, R.sub.2, 22) high frequency coupled from the feedback circuit containing the tuning fork quartz.
Claims17
Turning fork manometer having
- a measuring head (1) including
- a tuning fork quartz (2);
- a self-oscillating feedback circuit (23) having circuit components (19, 20), said tuning fork quartz (2) being connected in said circuit;
- and
- a protective casing (3) surrounding the turning fork quartz,
- wherein the measuring head comprises
- a mounting support for retaining said tuning fork quartz (2) and said protective casing (3) in position and, further, for mounting said circuit components;
- and
- wherein said tuning fork quartz and said circuit components are secured to said mounting support and thermally coupled together in heat transferring relation, and said circuit components and said tuning fork quartz are physically located close to each other to minimize connecting line lengths and enhance said thermal coupling.
Dependencies are inferred from the claim text.