Pyrometer multimeter

• US 6,095,682 A
• Filed: 11/20/1998
• Issued: 08/01/2000
• Est. Priority Date: 11/21/1997
• Status: Expired due to Term

• Current Assignee: Omega Engineering Incorporated (Spectris PLC)
• Original Assignee: Omega Engineering Incorporated (Spectris PLC)
• Inventors: Baghai, Shahin, Hollander, Milton Bernard, Macchiarelli, Michael A. Jr.
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): TIBBITS, PIA FLORENCE
• Application Number:
  US09/196,191
• Time in Patent Office: 620 Days
• Field of Search: 374/121, 374/126, 374/163
• US Class Current: 374/121
• CPC Class Codes: G01D 21/02 Measuring two or more variables by means not covered by a single other subclass
• CPC Class Codes: G01J 2005/0074 having separate detection of emissivity
• CPC Class Codes: G01J 5/02 Constructional details
• CPC Class Codes: G01J 5/025 Interfacing a pyrometer to an external device or network; User interface
• CPC Class Codes: G01J 5/0265 Handheld, portable ear thermometers G01J5/049
• CPC Class Codes: G01J 5/04 Casings
• CPC Class Codes: G01J 5/07 Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position optical collimating elements G01J5/0806
• CPC Class Codes: G01J 5/08 Optical arrangements
• CPC Class Codes: G01J 5/0846 having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels
• CPC Class Codes: G01J 5/0859 Sighting arrangements, e.g. cameras
• CPC Class Codes: G01J 5/0893 Arrangements to attach devices to a pyrometer, i.e. attaching an optical interface; Spatial relative arrangement of optical elements, e.g. folded beam path G01J5/049 takes precedence
• CPC Class Codes: G01J 5/0896 using a light source, e.g. for illuminating a surface
• CPC Class Codes: G01J 5/48 Thermography; Techniques using wholly visual means
• CPC Class Codes: G01K 1/143 for measuring surface temperatures
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: G01R 15/125 for digital multimeters

Abstract

The combination in an instrument of a multimeter and an instrument having apparatus for determining a non-contact measurement of radiation perceived at a distance from a surface. The instrument may further have an apparatus for determining temperature of that surface by direct contact therewith. The non-contact apparatus may have optical sighting means and laser sighting means, and means for determining emissivity of the surface. Provision may be made for recording data, e.g. a data logger. Audio output may be provided in accordance with temperature determinations, and may include speech synthesizing. Conveniently, the instrument is adapted for holding in the hand, for example by a pistol-grip handle, and/or for mounting on a tripod as well as a threaded connection with a wrist strap or a tripod. Temperatures derived respectively from infrared radiation, and from direct contact, have separate displays. The multimeter and the temperature instrument may have means for their control by vocal command.

Claims

1. A method of measurement and data display in a one hand held instrument comprising:

aiming a device with a laser at a remote measurement location and colelcting measurements by infrared radiation; and

contacting said location with a detector connected and supported upon a body of said one hand held instrument to said instrument, whereby the contact and non-contact measurements are collected, compared, and displayed by said instrument.

2. In a unitary hand held emissivity measurement instrument for single hand operation on a target comprising:

a) a multimeter including a disiplay;

b) a contact thermometer; and

c) a non-contact radiometer, the improvement comprising;

laser radiometer targeting means directing said radiometer;

a contact thermometer probe supported on said instrument; and

means for displaying target emissivity by the combination of both contact and non-contact temperature determination from the same target by the radiometer and probe in the same instrument.