Automated data collection system for fugitive emission sources

• US 5,479,359 A
• Filed: 03/17/1993
• Issued: 12/26/1995
• Est. Priority Date: 03/17/1993
• Status: Expired due to Fees

• Current Assignee: Metcalf & EDDY Incorporated (Aecom Technology Corporation)
• Original Assignee: Metcalf & EDDY Incorporated (Aecom Technology Corporation)
• Inventors: Schneider, Tracy L., Castleman, Luis J., Trobridge, Rex G., Rogero, Lawrence R.
• Primary Examiner(s): Ramirez, Ellis B.
• Assistant Examiner(s): Stamber, Eric W.
• Application Number:
  US08/032,272
• Time in Patent Office: 1,014 Days
• Field of Search: 364/550, 364/551.01, 364/496, 364/497, 403/DIG. 1, 248/309.4, 248/206.5, 211/DIG. 1, 439/38, 439/39, 439/40, 439/527, 422/62, 422/83, 436/3
• US Class Current: 702/24
• CPC Class Codes: G01M 3/20 using special tracer materials, e.g. dye, fluorescent material, radioactive material
• CPC Class Codes: G01M 3/205 Accessories or associated equipment; Pump constructions
• CPC Class Codes: G01M 3/223 for pipe joints or seals
• CPC Class Codes: G01N 1/24 Suction devices G01N1/22 - G01N1/2294 take precedence
• CPC Class Codes: G01N 2035/00683 of detectors
• CPC Class Codes: G01N 2035/00752 bar codes
• CPC Class Codes: G01N 33/0009 General constructional details of gas analysers, e.g. portable test equipment G01N1/22 takes precedence

Abstract

An Automated data collection system for fugitive emission sources includes a handheld data terminal formed as a single portable package or integral unit. The data terminal is connected to an organic vapor analyzer (OVA) and an emissions receiving probe. The data terminal includes a display, a keypad, a microprocessor, a memory, a barcode reader and an analog to digital (A/D) converter for converting the emissions signal received from the OVA to a digital representation. The data terminal facilitates immediate on-site repair by providing repair guidance or repair options to the inspector during the inspections process. Front and rear magnets detachably mount the probe to the data terminal. The probe'"'"'s rear magnet is recessed to matingly receive the unit'"'"'s projecting rear magnet.

Claims

1. Apparatus for taking a gas sample at a release point tagged with an identification tag having a scannable identification code thereon, comprising:

a gas probe having a front mounting portion and a rear mounting portion spaced from said front mounting portion;

a gas analyzer coupled to said probe, said gas analyzer analyzing the gas sample received from said probe and generating a concentration signal representative of the concentration of a component of the gas sample;

means for scanning the identification tag and providing an identification code signal representative of the identification code;

means for storing said identification code signal and said concentration signal;

a display on which said concentration signal can be continuously displayed; and

a data terminal housing said scanning means, said display and said storing means, said data terminal having a front mounting pad selectively engageable with said front mounting portion and a rear mounting pad selectively engageable with said rear mounting portion, said probe being disposed in an operative orientation when said front mounting portion is engaged to said front mounting pad ad said rear mounting portion is engaged to said rear mounting pad, and said front mounting portion disengaging from said front mounting pad preferentially to said rear mounting portion disengaging from said rear mounting pad in response to a force applied to said probe, and said display and said scanning means being disposed on said data terminal so that said display is visible to a user while scanning the identification tag and while taking a sample when said probe is mounted to said data terminal in said operative orientation.

2. The apparatus of claim 1 wherein the concentration signal generated by the gas analyzer is an analog signal, and further comprising an A/D converter coupleable to the gas analyzer and converting said analog concentration signal to a digital concentration signal, said A/D converter being housed in said data terminal and coupled to said storing means.

3. The apparatus of claim 2 wherein said data terminal further comprises an internal expansion slot and wherein said A/D converter is coupled to said internal expansion slot.

4. The apparatus of claim 2 wherein said A/D converter includes an integrated circuit for converting analog signals to a digital representation, said A/D converter being mounted on a daughter board located inside said data terminal.

5. The apparatus of claim 4 wherein said storing means and a means for processing are interconnected and mounted on a mother board located inside said data terminal, said daughter board connected to said mother board thereby connecting said A/D converter to said processing means and said storing means.

6. Apparatus for taking a gas sample at a release point tagged with an identification tag having a scannable identification code thereon, and analyzing said gas sample with a gas analyzer that receives the gas sample and generates a concentration signal representative of the concentration of a component of the gas sample, comprising:

a gas probe fluidically coupled to the gas analyzer, said probe having a front mounting portion and a rear mounting portion spaced from said front mounting portion;

means for scanning the identification tag and providing an identification code signal representative of the identification code;

means for storing said identification code signal and said concentration signal;

a display on which said concentration signal can be continuously displayed;

a data terminal housing said scanning means, said display, and said storing means, said data terminal having a front mounting pad selectively engageable with said front mounting portion and a rear mounting pad selectively engageable with said rear mounting portion, said probe being disposed in an operative orientation when said front mounting portion is engaged to said front mounting pad and said rear mounting portion is engaged to said rear mounting pad, and said front mounting portion disengaging from said front mounting pad preferentially to said rear mounting portion disengaging from said rear mounting pad in response to a force applied to said probe, and said display and said scanning means being disposed on said data terminal so that said display is visible to a user while scanning the identification tag and while taking a sample when said probe is mounted to said data terminal in said operative orientation.

7. A collection system for monitoring fugitive emission sources, comprising:

identification codes disposed at each fugitive emission source for identifying each fugitive emission source;

a handheld data terminal including;

a code reader for reading said identification codes and providing a

signal representative thereof;

a display for displaying information to a user;

a memory for storing information; and

data processing means coupled to said memory and said display for processing information based on one or more programs stored in said memory;

an emission receiving probe for receiving fugitive emissions from the fugitive emission sources, said probe having a front mounting portion and a rear mounting portion spaced from said front mounting portion; and

an emissions analyzer coupled to said probe and said data terminal for analyzing fugitive emissions received by said probe and generating an emissions signal representative thereof,

said data terminal having a front mounting pad selectively engageable with said front mounting portion and a rear mounting pad selectively engageable with said rear mounting portion, said probe being disposed in an operative orientation when said front mounting portion is engaged to said front mounting pad and said rear mounting portion is engaged to said rear mounting pad, and said front mounting portion disengaging from said front mounting pad preferentially to said rear mounting portion disengaging from said rear mounting pad in response to a force applied to said probe, and said display and said code reader being disposed on said data terminal so that said display is visible to a user while reading the identification code and while taking a sample when said probe is mounted to said data terminal in said operative orientation.

8. Apparatus for taking a gas sample at a release point tagged with an identification tag having a scannable identification code thereon, and analyzing said gas sample with a gas analyzer that receives the gas sample and generates a concentration signal representative of the concentration of a component of the gas sample, comprising:

a gas probe fluidically coupled to the gas analyzer, said probe having a front mounting portion and a rear mounting portion spaced from said front mounting portion;

means for scanning the identification tag and providing an identification code signal representative of the identification code;

means for storing said identification code signal and said concentration signal;

a data terminal housing said scanning means and said storing means and having a front mounting pad magnetically engageble with said front mounting portion and a rear mounting pad selectively engageable with said rear mounting portion, said probe being disposed in an operative orientation when said front mounting portion is engaged to said front mounting pad and said rear mounting portion is engaged to said rear mounting pad, and said front mounting portion disengaging from said front mounting pad preferentially to said rear mounting portion disengaging from said rear mounting in response to a force applied to said probe.

9. The apparatus of claim 8 wherein said front mounting portion includes a first probe magnet fixed to said probe and wherein said front mounting pad includes a first terminal magnet fixed to said data terminal, said first probe magnet being magnetically attracted to said first terminal magnet.

10. The apparatus of claim 9 wherein said rear mounting portion includes a second probe magnet fixed to said probe and wherein said rear mounting pad includes a second terminal magnet fixed to said data terminal, said magnets being disposed on said probe and said data terminal so that when said first probe magnet is aligned with said first terminal magnet, said second probe magnet is aligned with said second terminal magnet.

11. The apparatus of claim 10 wherein said second terminal magnet projects outward from its respective mounting surface, said second probe magnet is recessed inward from its respective mounting surface, the recess formed by said second probe magnet matingly receiving the projecting portion of said second terminal magnet when said second probe magnet and said second terminal magnet are brought together.

12. Apparatus for taking a gas sample at a release point tagged with an identification tag having a scannable identification code thereon, and analyzing said gas sample with a gas analyzer that receives the gas sample and generates a concentration signal representative of the concentration of a component of the gas sample, comprising:

a gas probe having a first end for receiving the gas sample and a second end fluidically coupleable to the gas analyzer and having a front mounting portion proximate to said first end and a rear mounting portion distal from said first end;

means for scanning the identification tag and providing an identification signal representative of the identification code;

means for storing said identification code signal and said concentration signal;

a data terminal housing said scanning means and said storing means having a front mounting pad selectively engageable with said front mounting portion and a rear mounting pad selectively engageable with said rear mounting portion, said probe being disposed in an operative orientation when said front mounting portion is engaged to said front mounting pad and said rear mounting portion is engaged to said rear mounting pad, and said front mounting portion disengaging from said front mounting pad preferentially to said rear mounting portion disengaging from said rear mounting pad in response to a force applied to said probe.

13. The apparatus of claim 12 wherein a first magnet is disposed on said front mounting portion of said probe and a complementarily polarized second magnet is disposed on said front mounting pad.

14. The apparatus of claim 12 wherein said rear mounting pad is recessed and said rear mounting portion projects outward whereby said rear mounting portion pivotally attaches to said rear mounting pad.

15. The apparatus of claim 14 wherein a first magnet is disposed on said rear mounting portion of said probe and a complementarily polarized second magnet is disposed on said rear mounting pad whereby said rear mounting portion of said probe is removably attached to said rear mounting pad.