Pressure and temperature sensor
First Claim
1. A pressure and temperature sensor for detecting a pressure and temperature condition in a cavity, comprising a pressure body (16) which co-operates with a sensor housing (12) and which in a mounted condition can be acted upon by a pressure in the cavity and which is intended for transmitting the pressure to a piezoelectrically acting sensor arrangement (30, 32, 34), wherein an electrical signal produced by the sensor arrangement (30, 32, 34) as a reaction to the pressure is passed out of the sensor housing (12) by means of an electrical contact device (48, 50, 52, 54, 56, 58), characterized in that a thermoelectric detector element (40) is fitted in the pressure body (16) and an electrical temperature signal produced by the detector element (40) is passed out by way of the electrical contact device (48, 50, 52, 54, 56, 58);
- said thermoelectric detector element (40) is located adjacent to said sensor arrangement (30, 32, 34) in said pressure body (16) such that the temperature can be measured at substantially the same location where pressure is measured.
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Accused Products
Abstract
The invention pertains to a pressure and temperature sensor, in particular for determining a pressure and temperature condition in a cavity of an injection molding apparatus or the like having a pressure body which co-operates with a sensor housing and which in a mounted condition can be acted upon by a pressure in the cavity and which is intended for transmitting the pressure to a piezoelectrically acting sensor arrangement, wherein an electrical signal generated by the sensor arrangement as a reaction to the pressure is taken out of the sensor housing by means of an electrical contact device, wherein a thermoelectric detector element is fitted in the pressure body and an electrical temperature signal generated by the detector element is taken out by way of the electrical contact device.
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Citations
12 Claims
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1. A pressure and temperature sensor for detecting a pressure and temperature condition in a cavity, comprising a pressure body (16) which co-operates with a sensor housing (12) and which in a mounted condition can be acted upon by a pressure in the cavity and which is intended for transmitting the pressure to a piezoelectrically acting sensor arrangement (30, 32, 34), wherein an electrical signal produced by the sensor arrangement (30, 32, 34) as a reaction to the pressure is passed out of the sensor housing (12) by means of an electrical contact device (48, 50, 52, 54, 56, 58), characterized in that a thermoelectric detector element (40) is fitted in the pressure body (16) and an electrical temperature signal produced by the detector element (40) is passed out by way of the electrical contact device (48, 50, 52, 54, 56, 58);
- said thermoelectric detector element (40) is located adjacent to said sensor arrangement (30, 32, 34) in said pressure body (16) such that the temperature can be measured at substantially the same location where pressure is measured.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A pressure and temperature sensor for detecting a pressure and temperature condition in a cavity comprising a pressure body (16) which co-operates with a sensor housing (12) and which in a mounted condition can be acted upon by a pressure in the cavity and which is intended for transmitting the pressure to a piezoelectrically acting sensor arrangement (30, 32, 34), wherein an electrical signal produced by the sensor arrangement (30, 32, 34) as a reaction to the pressure is passed out of the sensor housing (12) by means of an electrical contact device (48, 50, 52, 54, 56, 58), and wherein a thermoelectric detector element (40) is fitted in the pressure body (16) and an electrical temperature signal produced by the detector element (40) is passed out by way of the electrical contact device (48, 50, 52, 54, 56, 58), characterised in that a transitional region comprising the sensor arrangement, between the pressure body (16) and a housing projection of the sensor housing, is enclosed by a sleeve (18);
- means for connecting the pressure body (16) to the sensor housing in a pressure resilient manner.
Specification