PORTABLE GAS FLOW CALIBRATION
Model 2601-H Three Range Portable Gas Flow Standard
Three independent flow ranges in one portable instrument — each with a 10,000:1 turn-down — for the widest gas-flow calibration coverage Fluxion offers.
TURNDOWN RATIO
10,000:1
FULL-SCALE RANGES
20 sccm-250 slpm
FLOW ACCURACY
±0.6% of reading
OVERVIEW
The Model 2601-H is a three-range portable gas flow standard built for maximum versatility. Each of its three independent ranges delivers a 10,000:1 turndown, so a single instrument spans from low-sccm flows all the way to 250 slpm without swapping references. Battery or 24 Vdc wall power and a color touch-screen interface make it equally suited to the calibration lab and the field.
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Ranges 1 and 2 cover 20 sccm to 250 slpm full scale; Range 3 covers 20 sccm to 20 slpm for the finest resolution at low flow, with special low-range full scales to 0.5 sccm available as an option. The 2601-H supports pure gases and gas mixtures and logs time-stamped flow-rate and pressure data to USB in Excel format for traceable records.
APPLICATIONS
Where the 2601-H earns its place
One portable standard covering gas-flow calibration and verification across laboratory, field, and corrosive-service work.
Wide-span MFC calibration
Calibrate mass flow controllers and flow meters across three ranges without swapping references.
Multi-range cal labs
Cover many instrument ranges with a single traceable standard.
QA & metrology
Repeatable gas-flow measurement across a broad dynamic range
Field & lab transfer standard
A portable secondary gas flow standard for use on the bench or at the instrument.
Leak-test bench verification
Confirm the flow performance of leak-test stands and monitors.
R&D & process development
From low-sccm flows to 250 slpm in one unit.
KEY FEATURES
Three ranges, one traceable standard
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Three independent flow ranges — 10,000:1 turndown each
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Ranges 1 & 2: 20 sccm to 250 slpm full scales
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Range 3: 20 sccm to 20 slpm full scales
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Optional special low full-scale ranges as low as 0.5 sccm
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Color touch-screen interface
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Time-stamped USB data logging to Excel
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Supports pure gases and gas mixtures
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Standard ¼" compression or ¼" FNPT process connections
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Optional high-pressure configuration up to 305 psig
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Battery or 24 Vdc wall-powered operation
SPECIFICATIONS
Model 2601-H datasheet
All units custom-built to order
Flow accuracy ±0.6% of reading or ±0.1% of full scale (whichever is greater)
Flow repeatability ±(0.1% of reading + 0.02% of full scale)
Rangeability 0.1% to 100% of full scale (10,000:1 turn-down per range)
Standard full-scale ranges Ranges 1 & 2: 20 sccm–250 slpm · Range 3: 20 sccm–20 slpm (special low ranges to 0.5 sccm optional)
Pressure range 100 psig standard; up to 320 psia (high-pressure option)
Pressure accuracy ±0.5% of reading after tare
Pressure units Absolute or gauge (configurable)
Temperature range 14 °F to 140 °F (−10 °C to 60 °C)
Temperature accuracy ±1.35 °F (±0.75 °C)
Power 24 Vdc wall adapter or 24 Vdc internal battery pack
Connections ¼" and â…œ" compression or ¼" FNPT
Dimensions 18.2" L × 13.4" W × 6.7" D
Weight Approx. 17 lb (7.7 kg)
Gas compatibility Pure gases and gas mixtures; corrosive-gas variant adds 14 aggressive species