FILTER WITH MEMORY, COMMUNICATION AND TEMPERATURE SENSOR

• US 20110026560A1
• Filed: 10/10/2010
• Published: 02/03/2011
• Est. Priority Date: 04/12/2006
• Status: Abandoned Application

• Current Assignee: Millipore Corporation (Merck & Co., Inc.)
• Original Assignee: Millipore Corporation (Merck & Co., Inc.)
• Inventors: DiLeo, Anthony
• Application Number:
  US12/901,547
• Publication Number:
  US 20110026560A1
• Time in Patent Office: Days
• US Class Current: 374/141
• CPC Class Codes: A61L 2/07 Steam
• CPC Class Codes: A61L 2/28 Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour apparatus involving enzymes or microorganisms C12M1/34; methods involving enzymes or microorganisms C12Q1/00
• CPC Class Codes: B01D 2201/291 End caps
• CPC Class Codes: B01D 2201/54 Computerised or programmable systems
• CPC Class Codes: B01D 2201/56 Wireless systems for monitoring the filter
• CPC Class Codes: B01D 29/114 arranged for inward flow filtration B01D29/15, B01D29/33 take precedence
• CPC Class Codes: B01D 35/143 Filter condition indicators
• CPC Class Codes: B01D 46/429 Means for wireless communication
• CPC Class Codes: B01D 46/448 by temperature measuring
• CPC Class Codes: B01D 46/46 automatic

Abstract

The present invention describes a system and method for accurately measuring the temperature of a filter element. A temperature transducer, and a communications device are coupled so as to be able to measure and transmit the temperature of a filter element while in use. This system can comprise a single component, integrating both the communication device and the temperature transducer. Alternatively, the system can comprise separate temperature transducer and transmitter components, in communication with one another. In yet another embodiment, a storage element can be added to the system, thereby allowing the device to store a set of temperature values. The use of this device is beneficial to many applications. For example, the ability to read filter temperatures in situ allows improved Sterilization-In-Place (SIP) protocol compliance, since the temperatures of actual filter elements can be directly measured, rather than interpolated as is done currently.

Claims

1. A method of monitoring the temperature of a filtering element, comprising:

positioning a temperature sensor in close proximity to said filtering element;

sampling said temperature of said filtering element using said temperature sensor at a first sampling rate;

storing said sampled temperature readings in a storage element; and

querying said storage element at a second sampling rate to retrieve said temperature readings stored since last such query.

2. The method of claim 1, wherein said storage element is located proximate said filtering element.

3. The method of claim 2, wherein a wireless transmitter, located proximate said storage element, transmits said stored temperature readings to a remote wireless receiver at said second sampling rate.

4. The method of claim 1, wherein a remote wireless receiver is used to query said temperature sensor at a regular interval, wherein said remote wireless receiver comprises said storage element, and a computing device accesses said storage element in said wireless receiver at said second sampling rate.

5. The method of claim 4, wherein said storage element stores a timestamp associated with said temperature sample.