Watlow Electric Manufacturing Company

Jake Spooler

Louis P Steinhauser

William Bohlinger

Jack Reynolds

Mark Denis Everly

Jeremy Ohse

Patrick Margavio

Brittany Phillips

Paul Valachovic

Melissa Lanham

Richard T Williams

David P Culbertson

Philip Steven Schmidt

Scott H Boehmer

James N Pradun

Roger Brummell

Robert K Frake

Richard T Williams, Jr

Phillip S Schmidt

Gerald S Jackson

Christopher Meyers

Mitchell T Diaco

Jack (deceased) Reynolds

A heater for use in fluid immersion heating includes a plurality of resistive heating elements, and a plurality sets of power pins electrically connected to the plurality of heating elements. Each set of power pins includes a first power pin made of a first conductive material, and a second power pin made of a second conductive material that is dissimilar from the first conductive material of the first power pin. The first power pin is electrically connected to the second power pin to form a junction. The second power pin is electrically connected to the corresponding resistive heating element. The junctions between the first power pins and the second power pins are disposed at different heights in order to sense a level of the fluid.

Resistive heater with temperature sensing power pins

A heater system is provided. The system includes a resistive element with a temperature coefficient of resistance (TCR) of at least about 1,000 ppm such that the resistive element functions as a heater and as a temperature sensor and the resistive element is a material having greater than about 95% nickel. The system also includes a heater control module including a two-wire controller with a power control module that is configured to periodically compare a measured resistance value of the resistive element against a reference temperature to adjust for resistance drift over time during operation such that a temperature drift of the resistive element is less than about 1% over a temperature range of about 500&#xb0; C.-1,000&#xb0; C.

Electric heaters with low drift resistance feedback

A heater includes a first power pin and a second power pin made of dissimilar materials, and a resistive heating element made of a material different from those of the first and second power pins. The resistive heating element includes a first end electrically and directly connected to the first power pin to form a first thermocouple junction and a second end and electrically and directly connected to the second power pin to form a second thermocouple junction. The first and second power pins perform a dual function of supplying power to the resistive heating element and detecting changes in voltage at the first and second thermocouple junctions without interrupting the power supplied to the resistive heating element.

A heater system includes a plurality of heater cores defining zones, a plurality of power pins extending through each of the heater cores and made of different conductive materials, and at least one jumper connected between two of the plurality of power pins being made of dissimilar materials. The jumper is in communication with a controller to obtain a temperature reading of the heater system proximate the jumper.

A heater system includes a heater and a controller. The heater includes a first power pin made of a first conductive material, a second power pin made of a second conductive material that is dissimilar from the first conductive material, and a resistive heating element having two ends and made of a material that is different from the first and second conductive material of the first and second power pins. The resistive heating element forms a first junction with one end of the first power pin and a second junction at its other and with the second power pin. The controller is in communication with the power pins for measuring changes in voltage at the first and second junctions to determine an average temperature of the heater based on the changes in voltage.

A heating apparatus and method for use in an exhaust gas system is provided that includes a container body defining an exhaust gas pathway, a heater flange component attached to an exterior of the container body, and a heater assembly disposed in the exhaust gas pathway and secured to the heater flange component. The heater assembly includes at least one heater element, a bracket assembly that secures the at least one heater element in the container body, and a conformal bracket for securing the at least one heater element to the bracket assembly.

Exhaust gas heating apparatus

A heater is provided that includes a first power pin made of a first conductive material, a second power pin made of a second conductive material that is dissimilar from the first conductive material of the first power pin, and a resistive heating element having two ends and made of a material that is different from the first and second conductive materials of the first and second power pins. The resistive heating element forms a first junction at one end with the first power pin and a second junction at its other end with the second power pin, and changes in voltage at the first and second junctions are detected to determine an average temperature of the heater.

A heater includes at least one resistive element. The at least one resistive element includes a material having a high temperature coefficient of resistance (TCR) such that the resistive element functions as a heater and as a temperature sensor, the resistive element being a material selected from the group consisting of greater than about 95% nickel, a nickel copper alloy, stainless steel, a molybdenum-nickel alloy, niobium, a nickel-iron alloy, tantalum, zirconium, tungsten, molybdenum, Nisil, and titanium. In one form, the heater is a tubular heater with compacted MgO insulation and a metal sheath.

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Hannibal, MO, United States of America

Jake Spooler