Calibrate Particulate Matter Air Samplers
Audit PM10 and PM2.5 air samplers in any weather. Cold weather, humidity and wind gusts all wreak havoc on your ability to accurately audit your outdoor PM air samplers. Alicat’s FP-25BT mounts directly to your FRM or FEM air sampler to negate the effects of wind gusts, and its internal sensors are accurate from -30°C to +60°C and 0-100% RH. Its weatherproof construction is ready for snow, sleet and rain, but you can stay indoors thanks to a Bluetooth antenna that is strong enough to go through a steel shipping container. Bluetooth communications also means you’ll climb ladders less during BAM and TEOM flow calibrations.
Calibrate Gas Analyzers
Instantly verify sample flow rates for a wide range of gas analyzers. The valve mechanisms of positive displacement flow meters create pressure waves and inaccurate readings at low pressures. Alicat’s Whisper-series portable flow standards (MWB series) have no moving parts, so the only changes to the flow readings are those caused by your analyzer. This lets you detect and troubleshoot oscillating pumps before they become a problem.
Calibrate MFCs in Gas Dilution Calibrators
Complete a 20-point MFC flow calibration in minutes, not hours. The low-flow mass flow controllers inside gas dilution calibrators take a long time to calibrate with a positive-displacement meter. Alicat’s Whisper-series portable flow standards (MWB series) instantly measure all flow rates, even flows below 1 ml/min. Their wide turndown (200:1) means that you can comfortably use a single 200-sccm Whisper to calibrate both 200-sccm and 100-sccm MFCs down to 5% of their ranges.
Set Volumetric Flow Rates for Air Sampling Canisters
Adjust the mechanical flow controller of an air sampling canister with minimal equilibration time. Most flow meters are slow to equilibrate to new flow rates. This can make the simple adjustment of the flow controller set screw of a SUMMA or TO-Can canister an arduous process. Alicat’s Whisper-series portable flow standards (MWB series) have extremely low pressure drop, so they respond rapidly to changes in flow rates, even at 0.5 ml/min. Low pressure drop also makes the Whisper nearly invisible to your canister, ensuring that your volumetric flow rates are also accurate.
