ESBD_530160_1782219718966_582-26-15780 Attachment A Specifications.pdf

Name: Gas Flow Calibrators Solicitation Number: 582-26-15780

Attachment A Specifications for Gas Flow

Calibrator

Description:

The Calibration Laboratory is required to use a gas flow calibrator with flow cells as a primary flow standard in order to calibrate and/or verify secondary equipment used in the air monitoring networks. The equipment must maintain defensible, direct traceability to National Institute of Standards and Technology

(NIST).

Manufacturer/Model No. or Equivalent:

Catalogs, brand names or manufacturer's references listed in the Minimum General Specifications indicate type and quality required. Brands of like nature and quality will be considered. If proposing other than the referenced brand/model number, respondent must show manufacturer, brand or trade name, product number, and provide complete descriptive information of product offered, including product operating/service manual with response.

Minimum General Specifications:

A. Gas Flow Calibrator: Mesa Metrology Series ML-800 Base, model 200-800-

DCB-R or equivalent

1. The gas flow calibrator must verify flows in which the gas flow being verified consists of gases that are noncorrosive, noncondensing, noncombustible, and less than 70% humidity to match the gases used in the laboratory and field as required by EPA’s Protocol Gas Verification Program.

2. Flow through the calibrator needs to occur via pressure or vacuum to support both pressure-driven gas dilution calibrator mass flow controller verifications as required by 40 CFR Part 50 App A-1 Sec. 4.1.2 and vacuum- driven flow orifice verifications of particulate matter quality control equipment as required by 40 CFR Part 50, App. L, Sec. 9.2.

3. Flow measurements through the calibrator must occur in single, auto, or user-specified bursts. This automated burst and averaging feature is an EPA-recommended best practice used to efficiently collect and automatically average a sequence of consecutive readings.

4. The calibrator must have pressure and temperature sensors in the flow stream to accurately calculate volumes and standardized flows as required by 40 CFR Part 50 App A-1 Section 4.2.3.

5. The calibrator must be powered with an AC Adapter/Charger (12V DC, > 3.0A, 2.5 mm, center positive, North American standard. Unregulated or non-standard power supplies may introduce electrical noise into the internal circuitry, causing measurement instability and fluctuating readings that compromise calibration accuracy.

6. The unit must operate between 15°C and 30°C to match standard climate-controlled laboratory environments and prevent measurement drift.

7. Storage temperature must be between 0 °C and 70 °C to prevent component degradation when transported for periodic recertification that would affect performance of equipment.

8. The unit must operate at atmospheric pressure to allow accurate volume-to-mass flow standardized calculations against local barometric baselines to interface with existing laboratory calibration benches without requiring specialized backpressure regulators.

9. A data port with serial RS-232 connector must be present to interface directly with laboratory PC for data export and software communication.

B. Coated Ultra-Low Flow Cell: Mesa Metrology Series ML-800 Ultra-Low flow cell, model 200-800-3 or equivalent

1. Ultra-Low flow cell must be compatible with the Gas Flow Calibrator listed in “A” above to ensure seamless modular system integration.

2. Required flow range of 0.5-50.0 scc/min with a standardized accuracy of +/- 0.25% and volumetric flow accuracy of +/- 0.002 scc/min to verify mass flow controllers at the low-concentration dilution points as required by 40 CFR Part 50 App A-1 Sec. 4.1.2 and 40 CFR Appendix-A-to-Part-58 3.1.2.

3. Required that the standardized accuracy is stated as a percent of reading so that measured values do not produce increasing relative error as the measured quantity decreases and that all values measured within the device flow range meet the requirements of 40 CFR Part 50, App L Sec 9.2.

4. Gas flow inlets to the cell must be 1/4-inch and outlet fittings must be 1/2-inch ID tube compression fittings to directly connect with existing laboratory plumbing.

5. All fittings must be equivalent to Swagelok® fittings to guarantee leak-free gas-tight seals when measuring flow rates and to match existing laboratory gas flow fittings.

C. Coated Low Flow Cell: Mesa Metrology Series ML-800 Low flow cell, model 200-800-10 or equivalent

1. Low flow cell must be compatible with the Gas Flow Calibrator listed in “A” above to ensure seamless modular system integration.

2. Required flow range of 5-500 scc/min with a standardized accuracy of +/- 0.15% and volumetric accuracy of +/- 0.15% to verify mass flow controllers at the low-concentration dilution points as required by 40 CFR Part 50 App A-1 Sec. 4.1.2 and 40 CFR Appendix-A-to-Part-58 3.1.2.

3. Required that accuracy is stated as a percent of reading (including standardization, if applicable) so that measured values do not produce increasing relative error as the measured quantity decreases and that all values measured within the device flow range meet the requirements of 40 CFR Part 50, App L Sec 9.2.

4. Gas flow inlets and outlets to the cell must be 1/4-inch ID tube compression fittings to directly connect with existing laboratory plumbing.

5. All fittings must be equivalent to Swagelok® fittings to guarantee leak-free gas-tight seals when measuring flow rates and to match existing laboratory gas flow fittings.

D. Coated Low Flow Cell: Mesa Metrology Series ML-800 Low flow cell, model 200-800-44 or equivalent

1. High flow cell must be compatible with the Gas Flow Calibrator listed in “A” above to ensure seamless modular system integration.

2. Required flow range of 500-50,000 scc/min with a standardized accuracy of +/- 0.15% and volumetric accuracy of +/- 0.15% to verify mass flow controllers at the high-concentration dilution points as required by 40 CFR Part 50 App A-1 Sec. 4.1.2 and 40 CFR Appendix-A-to-Part-58 3.1.2.

3. Required that accuracy is stated as a percent of reading (including standardization, if applicable) so that measured values do not produce increasing relative error as the measured quantity decreases and that all values measured within the device flow range meet the requirements of 40 CFR Part 50, App L Sec 9.2.

4. Gas flow inlets and outlets to the cell must be 1/8-inch ID tube compression fittings to directly connect with existing laboratory plumbing.

5. Fittings must be equivalent to Swagelok® fittings to guarantee leak-free gas-tight seals when measuring flow rates and to match already existing laboratory gas flow fittings.

SPECIAL TERMS AND CONDITIONS

A. Delivery to be made to TCEQ, 12100 Park 35 Circle, Building B, Austin, Texas

78753. Preferred delivery response to the agency shall be within 60 calendar days after receipt of order.

B. All equipment must be bid new, of current production and must include the manufacturer’s standard parts and accessories.

C. At least one (1) hardcopy and / or one (1) digital manual shall accompany each instrument. The manuals should include complete operating instructions, circuit descriptions, theory of operation, location of controls and switches, maintenance, and service instructions. The manual shall include schematic diagrams, lists of commonly replaced parts, warnings and safety precautions, etc.

D. Warranty period: complete coverage of system, parts and labor for a minimum of one year from date of acceptance following the testing period as described in Section E below.

E. The goods or materials ordered with this request will be inspected and tested upon receipt. Testing will occur by comparing flow data against a secondary primary standard at various flow rates. Testing will not take more than forty-five (45) days. Payment will be made within thirty (30) days after tests have been completed and goods or materials are found to meet specifications or the day that the invoice for goods or material was received, whichever is later.