Accurate—NIST-traceable and rated at ±0.75% of reading or ±0.1% of full-scale (whichever is greater); calibration documents provided with each unit. Fast—<1 ms sensor response time. Sensitive—built for ambient conditions; ultra-low pressure drop of 0.07 psid. Convenient—no computer connection or software required and all data is visible on one screen. Tough—stainless-steel construction; unaffected by bumps, humidity, or changes in orientation; and supported by an Alicat lifetime warranty.* Downloadable—data can be recorded on a computer via RS-232 connection or micro USB (unit has no onboard data logging). Long-lasting—portable models with lithium-ion battery offer 18 hours (monochrome) of use between charges; rated for 500 cycles before decline to 85%.** *Restek Recommends: Recalibrate your Alicat flow calibrator once every year to maintain lifetime warranty. Prolonged failure to recalibrate your unit may result in increased error. To always get the most accurate measurements, contact Restek Customer Service to send in your flow calibrator for service, recertification, and recalibration (cat.# 26462). ** Note: Handling, removing, or replacing the battery will void the Alicat warranty. Specifications Accuracy at Calibration Conditions After Tare: ±0.75% of reading or ±0.1% of full-scale (whichever is greater) High Accuracy at Calibration Conditions After Tare: ±0.6% of reading or ±0.1% of full-scale (whichever is greater) Accuracy for Bidirectional Meters at Calibration Conditions After Tare: ±0.75% of reading or ±0.1% of total span (whichever is greater) from positive full-scale to negative full-scale Repeatability: ± 0.02% full-scale Temperature Sensitivity: —Mass flow zero shift: ±0.03% of full-scale per °C from tare temperature —Mass flow span shift: ±0.01% of reading per °C from 25°C Pressure Sensitivity: —Mass flow zero shift: ±0.01% of full-scale per ATM from tare pressure —Mass flow span shift: ±1% of reading per atmosphere from calibration conditions Operating Range/Turndown Ratio: 0.01% to 100% full-scale/10,000:1 turndown Sensor Response Time: <1 ms Typical Indication Response Time (indication response time includes user adjustable averaging up to 255 ms): 127 ms (user adjustable) Warm-Up Time: <1 second Operating Temperature: −10 to +60 °C Humidity Range (non-condensing): 0 to 95% Maximum Internal Pressure (static): 60 psig (damage possible above 10 PSID differential pressure) Wetted Materials: 302/303 stainless steel, Viton, glass-reinforced polyphenylene sulfide, alumina, glass, gold, silicon, heat-cured epoxy, heat-cured silicone rubber Certification: CE, NIST Programmed Gases: Short Name—Long Name Air —Air (Clean Dry) Ar —Argon CH 4 —Methane CO —Carbon Monoxide CO 2 —Carbon Dioxide C 2 H 6 —Ethane H 2 —Hydrogen He —Helium N 2 —Nitrogen N 2 O —Nitrous Oxide Ne —Neon O 2 —Oxygen C 3 H 8 —Propane n -C 4 H 10 —Normal Butane C 2 H 2 —Acetylene C 2 H 4 —Ethylene (Ethene) Kr —Krypton Xe —Xenon C-25 —25% CO 2 , 75% Ar C-10 —10% CO 2 , 90% Ar C-8 —8% CO 2 , 92% Ar C-2 —2% CO 2 , 98% Ar C-75 —75% CO 2 , 25% Ar He-25 —25% He, 75% Ar He-75 —75% He, 25% Ar A1025 —90% He, 7.5% Ar, 2.5% CO 2 Star29 —Stargon CS (90% Ar, 8% CO 2 , 2% O 2 ) P-5 —5% CH 4 , 95% Ar iButen —Isobutylene C-15 —15% CO 2 , 85% Ar C-20 —20% CO 2 , 80% Ar C-50 —50% CO 2 , 50% Ar He-50 —50% He, 50% Ar He-90 —90% He, 10% Ar Bio5M —5% CH 4 , 95% CO 2 Bio10M —10% CH 4 , 90% CO 2 Bio15M —15% CH 4 , 85% CO 2 Bio20M —20% CH 4 , 80% CO 2 Bio25M —25% CH 4 , 75% CO 2 Bio30M —30% CH 4 , 70% CO 2 Bio35M —35% CH 4 , 65% CO 2 Bio40M —40% CH 4 , 60% CO 2 Bio45M —45% CH 4 , 55% CO 2 Bio50M —50% CH 4 , 50% CO 2 Bio55M —55% CH 4 , 45% CO 2 Bio60M —60% CH 4 , 40% CO 2 Bio65M —65% CH 4 , 35% CO 2 Bio70M —70% CH 4 , 30% CO 2 Bio75M —75% CH 4 , 25% CO 2 Bio80M —80% CH 4 , 20% CO 2 Bio85M —85% CH 4 , 15% CO 2 Bio90M —90% CH 4 , 10% CO 2 Bio95M —95% CH 4 , 5% CO 2 EAN-32 —32% O 2 , 68% N 2 EAN —3 6% O 2 , 64% N 2 EAN-40 —40% O 2 , 60% N 2 HeOx20 —20% O 2 , 80% He HeOx21 —21% O 2 , 79% He HeOx30 —30% O 2 , 70% He HeOx40 —40% O 2 , 60% He HeOx50 —50% O 2 , 50% He HeOx60 —60% O 2 , 40% He HeOx80 —80% O 2 , 20% He HeOx99 —99% O 2 , 1% He EA-40 —Enriched Air-40% O 2 EA-60 —Enriched Air-60% O 2 EA-80 —Enriched Air-80% O 2 Metab —Metabolic Exhalant (16% O 2 , 78.04% N 2 , 5% CO 2 , 0.96% Ar) LG-4.5 —4.5% CO 2 , 13.5% N 2 , 82% He LG-6—6% CO 2 , 14% N 2 , 80% He LG-7 —7% CO 2 , 14% N 2 , 79% He LG-9 —9% CO 2 , 15% N 2 , 76% He HeNe-9 —9% Ne, 91% He LG-9.4 —9.4% CO 2 , 19.25% N 2 , 71.35% He SynG-1 —40% H 2 , 29% CO, 20% CO 2 , 11% CH 4 SynG-2 —64% H 2 , 28% CO, 1% CO 2 , 7% CH 4 SynG-3 —70% H 2 , 4% CO, 25% CO 2 , 1% CH 4 SynG-4 —83% H 2 , 14% CO, 3% CH 4 NatG-1 —93% CH 4 , 3% C 2 H 6 , 1% C 3 H 8 , 2% N 2 , 1% CO 2 NatG-2 —95% CH 4 , 3% C 2 H 6 , 1% N 2 , 1% CO 2 NatG-3 —95.2% CH 4 , 2.5% C 2 H 6 , 0.2% C 3 H 8 , 0.1% C 4 H 10 , 1.3% N 2 , 0.7% CO 2 CoalG —50% H 2 , 35% CH 4 , 10% CO, 5% C 2 H 4 Endo —75% H 2 , 25% N 2 HHO —66.67% H 2 , 33.33% O 2 HD-5 —LPG: 96.1% C 3 H 8 , 1.5% C 2 H 6 , 0.4% C 3 H 6 , 1.9% n -C 4 H 10 HD-10 —LPG: 85% C 3 H 8 , 10% C 3 H 6 , 5% n -C 4 H 10 OCG-89 —89% O 2 , 7% N 2 , 4% Ar OCG-93 —93% O 2 , 3% N 2 , 4% Ar OCG-95 —95% O 2 , 1% N 2 , 4% Ar FG-1 —2.5% O 2 , 10.8% CO 2 , 85.7% N 2 , 1% Ar FG-2 —2.9% O 2 , 14% CO 2 , 82.1% N 2 , 1% Ar FG-3 —3.7% O 2 , 15% CO 2 , 80.3% N 2 , 1% Ar FG-4 —7% O 2 , 12% CO 2 , 80% N 2 , 1% Ar FG-5 —10% O 2 , 9.5% CO 2 , 79.5% N 2 , 1% Ar FG-6 —13% O 2 , 7% CO 2 , 79% N 2 , 1% Ar P-10 —10% CH 4 90% Ar D-2 —Deuterium
Features & Benefits
Quickly and precisely verify flow rates generated by vacuum or pressure before going into the field.
Ideal for real-time calibration of airflow controllers, passive sampling kits, air canisters, sampling pumps, and more.
Measure absolute pressure, mass flow, volumetric flow, and temperature of 98 different gases across a wide range of flows.
Choose a lab-based or convenient battery-powered portable model.
*Restek Recommends:
Recalibrate your Alicat flow calibrator once every year to maintain lifetime warranty. Prolonged failure to recalibrate your unit may result in increased error. To always get the most accurate measurements, contact Restek
Customer Service
to send in your flow calibrator for service, recertification, and recalibration (cat.# 26462).
