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Alnor Instrument Company Patents
Assignee:
Alnor Instrument Company
Address:
Skokie, IL
No. of patents:
6
Patents:












Patent Number Title Of Patent Date Issued
5522261 Fluid flow direction and velocity monitor and temperature compensating circuit therefor June 4, 1996
A fluid flow direction and velocity monitor, particularly useful in monitoring pressure differentials between a controlled environment and its surroundings, includes a heated thermal sensor situated between upstream and downstream cold thermal sensors within a channel. The heated thermal
5461910 Fluid flow direction and velocity monitor October 31, 1995
A fluid flow detection monitor (80), particularly useful in monitoring pressure differentials between a controlled environment and its surroundings, includes a heat source (1) situated between an upstream and downstream thermal sensor (2,3) within a channel (5). The electrical resist
5162725 Modular metering instrument including multiple sensing probes November 10, 1992
A modular metering instrument including one of a plurality of sensing probes or probe modules including identification and calibration information stored therein and a meter module which can identify the sensing probe when the sensing probe is connected thereto. The storage of calibr
4982605 Air flow monitor and temperature compensating circuit therefor January 8, 1991
A temperature compensated air flow monitor which measures true flow velocity or volume flow. The air flow monitor can be mounted in or coupled to a fume hood and includes a fluid flow tube having a pair of thermistors mounted therein. A first cold thermistor is utilized to provide te
4548076 Air flow volume measuring apparatus October 22, 1985
An improved selector provides for air paths between a meter and an air volume sensing manifold that are similar for both up and down flow of air through the apparatus thereof. This provides similar momentum losses in the air reaching the meter for both air up and down flow through the
4122720 Diesel engine exhaust temperature monitor October 31, 1978
A diesel engine monitor monitors the exhaust gas temperature of each cylinder. A thermocouple is coupled to each cylinder and the monitor scans the analog signal output from each thermocouple which is proportional to the engine exhaust temperature of the cylinder. The analog temperature

 
 
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