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2771 - Wastewater Instrumentation Process Control Supervisor

at Pima County

Posted: 3/15/2019
Job Status: Part Time
Job Reference #: 2384062

Job Description

Overall Job Objective

Position Description

This part-time position is in the Regional Wastewater Reclamation Department.

Salary Grade: 54

Supervises skilled technicians in the installation, maintenance, repair, programming and calibration of metering devices, electronic instrumentation systems, process control computers and programmable logic controllers (PLC) for Regional Wastewater Reclamation. This classification is responsible for reviewing and recommending plans and specifications for new or modified instrumentation, computer systems and flow metering devices and for coordinating the work of instrumentation staff assigned to the Wastewater treatment facilities. 

An assessment may be administered.


(Work assignments may vary depending on the department's needs and will be communicated to the applicant or incumbent by the supervisor.)
Supervises the maintenance, installation, calibration, and repair of a variety of electronic instrumentation, metering devices, electrical equipment, process control Supervisory Control and Data Acquisition (SCADA) system, PLCs and operator SCADA work station displays;
Supervises routine diagnostics and component level repair and electrical and pneumatic test equipment;
Assists in the preparation of preliminary and long-range SCADA plans;
Evaluates automatic process control equipment for its ability to meet the operational needs of the county's wastewater treatment facility systems;
Inspects new and existing installation of electronic instrumentation, computers and metering devices for the wastewater treatment facilities;
Monitors warranty repair and services contracts for the county owned equipment;
Troubleshoots problems and takes action to ensure facility integrity;
Completes the more difficult installation of process control systems, calibration and repair job;
Demonstrates continuous effort to improve operations, decrease turnaround times and streamline work processes;
Modifies process control systems and prepares schematic diagrams to reflect changes;
Documents work performed;
Develops and implements PLC programs and operator SCADA work station displays;
May assist in the review of engineering drawings and specifications.
Knowledge of:

  • principles, practices and techniques of supervision;
  • principles, practices and techniques of mechanics, electricity, pneumatics, hydraulics, electronics and mathematics of industrial process control instrumentation, PLCs and SCADA work station displays;
  • equipment and tools used in the repair and maintenance of mechanical, electronic and pneumatic instrumentation components;
  • principles, practices and techniques of electronic instrumentation and computer maintenance;
  • principles, practices and techniques of materials and tools of the electronic instrumentation and metering trade;
  • analog and digital electronic control systems, devices, theory, terminology and application;
  • operation, repair, maintenance, installation, and calibration of process control systems and components;
  • SCADA systems, including programming SCADA operator work station displays;
  • word-processing and spreadsheet applications.
 Skill in: 
  • repairing, maintaining, installing, and calibrating process control systems and instrumentation;
  • supervising assigned staff;
  • utilizing hand tools and specialized tools and equipment used in the calibration and repair of electronic process control components;
  • reading and interpreting shop manual and schematic diagrams;
  • repairing, maintaining and calibrating laboratory analytical equipment;
  • preparing schematic diagrams;
  • SCADA systems, including programming of PLCs and SCADA operator work station displays.

Minimum Qualifications

(1) An Associate's Degree or certificate for Direct Employment from an accredited college or vocational school in electronics technology instrumentation and process control and four years of experience in the repair, programming or maintenance of process control systems, programmable logic controllers (PLC), SCADA system displays, or similar instrumentation in an industrial or environmental setting.
(2) Six years of experience in the repair, maintenance, installation, operation or calibration of electronic instrumentation or programming of PLCs or SCADA system displays.

Qualifying education and experience must be clearly documented in the "Education" and "Work Experience" sections of the application.  Do not substitute a resume for your application or write "see resume" on your application.

Preferred Qualifications:

(Be specific in describing your experience in your application. Ensure the descriptions provided illustrate your competencies, specifically addressing the required and preferred qualifications.):

  1. Experience analyzing and performing complex work on process control instrumentation equipment, including process control drawings, process control wiring and wet chemistry analytical devices in an industrial environment.
  2. Experience troubleshooting, repairing and calibrating instrumentation components using shop manuals, schematics and ladder and loop diagrams.
  3. Experience in reading and interpreting shop manual and schematic diagrams including Piping and Instrument Diagrams (P&ID) with the ability to review engineering drawings and P&IDs for both bid review and troubleshooting.
  4. Experience in maintenance, installation, calibration, and repair of a variety of electronic instrumentation, metering devices, electrical equipment, process control, Supervisory Control and Data Acquisition (SCADA) system, PLCs and operator SCADA work station displays.
Selection Procedure:
Pima County Human Resources Department reserves the right to admit to the selection process only those candidates that meet the minimum/desired qualifications. All applications will be assessed based on an evaluation of the listed education and experience.  Candidates meeting the minimum/desired qualifications may be further evaluated/scored against any advertised Preferred Qualifications.  The hiring authority will interview and select the successful candidate from a referral list provided by Human Resources. Additional assessments/testing may be required as part of the selection process.

Supplemental Information

Licenses and Certificates: Valid driver license is required at time of application.  Valid AZ driver license is required at time of appointment. The successful applicant will be subject to a 39-month DOT Motor Vehicle Record review to determine applicant's suitability to operate county vehicles in accordance with Pima County administrative procedures.  Failure to obtain and maintain the required licenses and certifications shall be grounds for termination. Any offer of employment resulting from this recruitment is contingent upon Risk Management's review and approval of the candidate's driving record.


Physical/Sensory Requirements: Some positions may require the ability to: work with or in the presence of noxious odors; work with noxious or potentially hazardous chemicals, compounds or wastewater products. Safety equipment will be provided by Pima County.

Application Instructions

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