Alicat FP-25BT flow calibrating a Met One BAM 1020 air sampler

FP-25 Field Flow Standard for PM Air Samplers

Alicat’s FP-25 flow calibrator rapidly calibrates every low-volume particulate air sampler on your deck. All-weather accuracy and durability ensure consistent readings in any weather.
 

FP-25BT Bluetooth
Field Flow Standard

Climb ladders less with a Bluetooth-equipped Alicat FP-25BT. Compatible with Android portable devices.
 
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All-Weather Accuracy

Be confident in your flow measurements, no matter the weather. Responsive temp probes and humidity sensors keep the weather in check as you monitor flow, pressure and temperature in real time. Or, collect a robust average of 5000 readings in 5 seconds.

Fast & Easy Operation

Connect quickly to any low-volume sampler with the industry’s only pass-through PM10/PM2.5 inlet connection. Or, use the included barb fitting with face seal for no-hassle fitting changes. Rapid temperature equilibration lets you get started right away.

Durable Field Design

Keep calibrating after a drop from the roof, or finish your audit if it starts to rain. This compact calibrator fits in your pocket but is built tough with an all-aluminum body, weather-resistant connections and the industry’s only lifetime warranty.

Ambient Air Monitoring

Calibrating PM air samplers with the FP-25 is just one way that Alicat makes air monitoring easier. Visit our ambient air monitoring page to learn more.
Ambient Page



 

Quick Specs

Accuracy

  • Flow accuracy (NIST-traceable): +/- 1.0% of the reading Range: 0.1-25 lpm/slpm
  • Barometric pressure accuracy (NIST-traceable): +/- 1 mmHg Range: 475-825 mmHg
  • Temperature accuracy (NIST-traceable): +/- 0.2ºC Range: -30º-60ºC

Speed of Response

  • Typical flow reading response time constant: 5 ms (may be up to 10 ms under very low flow conditions)
  • Typical temperature and humidity equilibration: less than 5 minutes

Pressure Drop

  • 0.10 psi at 16.7 lpm
  • 0.16 psi at 25.0 lpm

Power and Communications

  • Internal Li-ion rechargeable battery provides 12 hours of continuous operation
  • Battery charging and RS-232 communications via micro-USB jack

Display

  • Simultaneous real-time readings of volumetric flow, standardized mass flow, barometric pressure, temperature (via external probe or internal sensor) and relative humidity
  • 2.1″ monochrome LCD digital display with touch pad interface and backlight

Reliability

  • Calibrator accuracy unaffected by drops, humidity, vibration or changes in orientation during use
  • Limited lifetime warranty, kept active with each annual recalibration

In the Box

  • FP-25 flow calibrator
  • External temperature probe with 6 ft of cable and locking M8 connector
  • Micro-USB to USB cable for charging and communications
  • USB wall adapter for charging
  • 1/4″ NPT barb adapter (1/4″ barb) with integrated face seal
  • 1/4″ NPT fittings with face seals for pass-through connection to 1-1/4″ OD air sampler downtubes
  • FP-25 flow calibrator
  • NIST-traceable calibration certificate
  • Operating manual
  • Custom-fit hard case
Alicat FP-25 flow calibrator kit contents

Alicat FP-25 flow calibrator kit contents

Choose Your Sampler

Flow Calibrating a Met One BAM 1020/1022 FEM Sampler

Alicat FP-25 flow calibrating a rooftop Met One BAM 1020/1022 FEM air sampler

Alicat FP-25 flow calibrating a rooftop Met One BAM 1020/1022 FEM air sampler

Method 1: Direct Mode

Direct Mode connects the Alicat FP-25 directly to your sampler’s downtube. The pass-through connection most closely replicates sampler operating conditions. The low pressure drop of the Alicat ensures that it is virtually invisible to your air sampler.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the BAM downtube, and place the PM10 inlet on top of the FP-25. If using a PM2.5 cyclone, leave it in place, and fit the FP-25 between it and the PM10 inlet.
  4. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  5. Be sure to tare the Alicat FP-25 before you begin the BAM 1020 or BAM 1022 flow calibration.
Alicat FP-25 flow calibrating a rooftop Met One BAM 1020/1022 FEM air sampler

Alicat FP-25 flow calibrating a rooftop Met One BAM 1020/1022 FEM air sampler

Method 2: Standard Mode

Standard Mode connects the FP-25 to any air sampler by means of a hose barb and silicone tubing. FRM and FEM samplers will use their flow audit adapters for this setup.

  1. Thread the barb fitting into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Push the silicone tubing onto the barb.
  3. Fit the other end of the tubing onto the barb of the BAM flow audit adapter.
  4. Place the flow audit adapter onto the top of the BAM downtube, or the PM2.5 cyclone if you are using one.
  5. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  6. Be sure to tare the Alicat FP-25 before you begin the BAM 1020 or BAM 1022 flow calibration.
Alicat FP-25 leak checking a Met One BAM 1020/1022 FEM air sampler

Alicat FP-25 leak checking a Met One BAM 1020/1022 FEM air sampler

Pressure Monitoring During External Leak Checks

The pass-through setup (Direct Mode) can also be used to provide pressure monitoring during leak check procedures. During the leak check, monitor internal pressure with absolute or gauge reference in the engineering unit of your choosing.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the BAM downtube.
  4. Fit the leak check adapter onto the PM inlet adapter of the FP-25.
  5. Select gauge or absolute pressure on the FP-25 to monitor sampler pressure during the leak check.

Flow Calibrating a Met One SASS or Super SASS Speciation Sampler

Alicat FP-25 flow calibrating a Met One SASS

Alicat FP-25 flow calibrating a Met One SASS

  1. Thread the barb fitting into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Push the silicone tubing onto the barb.
  3. Connect the other end of the tubing to the inlet tube of the canister’s sharp cut cyclone (SCC).
  4. Insert the FP-25 external temperature probe into the SASS radiation shield.
  5. Be sure to tare the Alicat FP-25 before you begin the SASS flow calibration.
Alicat FP-25 flow calibrating a Met One SASS

Alicat FP-25 flow calibrating a Met One SASS

Flow Calibrating a Partisol/Thermo Scientific PM10 FRM Sampler

Alicat FP-25 flow calibrating a Thermo Scientific Partisol 2000 FRM air sampler

Alicat FP-25 flow calibrating a Thermo Scientific Partisol 2000 FRM air sampler

Method 1: Direct Mode

Direct Mode connects the Alicat FP-25 directly to your sampler’s downtube. The pass-through connection most closely replicates sampler operating conditions. The low pressure drop of the Alicat ensures that it is virtually invisible to your air sampler.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the Partisol downtube, and place the PM10 inlet on top of the FP-25.
  4. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  5. Be sure to tare the Alicat FP-25 before you begin the Partisol flow calibration.
Alicat FP-25 flow calibrating a Thermo Scientific Partisol 2000 FRM air sampler

Alicat FP-25 flow calibrating a Thermo Scientific Partisol 2000 FRM air sampler

Method 2: Standard Mode

Standard Mode connects the FP-25 to any air sampler by means of a hose barb and silicone tubing. FRM and FEM samplers will use their flow audit adapters for this setup.

  1. Thread the barb fitting into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Push the silicone tubing onto the barb.
  3. Fit the other end of the tubing onto the barb of the Partisol flow audit adapter.
  4. Place the flow audit adapter onto the top of the Partisol downtube.
  5. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  6. Be sure to tare the Alicat FP-25 before you begin the Partisol flow calibration.
Alicat FP-25 leak checking a Thermo Scientific Partisol 2000 FRM air sampler

Alicat FP-25 leak checking a Thermo Scientific Partisol 2000 FRM air sampler

Pressure Monitoring During External Leak Checks

The pass-through setup (Direct Mode) can also be used to provide pressure monitoring during leak check procedures. During the leak check, monitor internal pressure with absolute or gauge reference in the engineering unit of your choosing.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the Partisol downtube.
  4. Fit the leak check adapter onto the PM inlet adapter of the FP-25.
  5. Select gauge or absolute pressure on the FP-25 to monitor sampler pressure during the leak check.

Flow Calibrating a Thermo 2025i PM10/PM2.5 FRM Sampler

Alicat FP-25 flow calibrating a Thermo Scientific 2025i FRM air sampler

Alicat FP-25 flow calibrating a Thermo Scientific 2025i FRM air sampler

Method 1: Direct Mode

Direct Mode connects the Alicat FP-25 directly to your sampler’s downtube. The pass-through connection most closely replicates sampler operating conditions. The low pressure drop of the Alicat ensures that it is virtually invisible to your air sampler.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the 2025i downtube, and place the PM10 inlet on top of the FP-25.
  4. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  5. Be sure to tare the Alicat FP-25 before you begin the Thermo 2025i flow calibration.
Alicat FP-25 flow calibrating a Thermo Scientific 2025i FRM air sampler

Alicat FP-25 flow calibrating a Thermo Scientific 2025i FRM air sampler

Method 2: Standard Mode

Standard Mode connects the FP-25 to any air sampler by means of a hose barb and silicone tubing. FRM and FEM samplers will use their flow audit adapters for this setup.

  1. Thread the barb fitting into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Push the silicone tubing onto the barb.
  3. Fit the other end of the tubing onto the barb of the 2025i flow audit adapter.
  4. Place the flow audit adapter onto the top of the 2025i downtube.
  5. Insert the FP-25 external temperature probe into the sampler’s radiation shield.
  6. Be sure to tare the Alicat FP-25 before you begin the Thermo 2025i flow calibration.
Alicat FP-25 leak checking a Thermo Scientific 2025i FRM air sampler

Alicat FP-25 leak checking a Thermo Scientific 2025i FRM air sampler

Pressure Monitoring During External Leak Checks

The pass-through setup (Direct Mode) can also be used to provide pressure monitoring during leak check procedures. During the leak check, monitor internal pressure with absolute or gauge reference in the engineering unit of your choosing.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Fit the FP-25 onto the 2025i downtube.
  4. Fit the leak check adapter onto the PM inlet adapter of the FP-25.
  5. Select gauge or absolute pressure on the FP-25 to monitor sampler pressure during the leak check.

Flow Calibrating a URG-3000 Carbon Speciation Sampler

Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Method 1: Direct Mode

Direct Mode connects the Alicat FP-25 directly to your sampler’s downtube. The pass-through connection most closely replicates sampler operating conditions. The low pressure drop of the Alicat ensures that it is virtually invisible to your air sampler.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Connect the FP-25 to the URG downtube reducer, and place the assembly onto the top of the URG-3000 downtube.
  3. The URG-3000 temperature sensor is located at the bottom of its Module C box. Place the FP-25 external temperature probe near this location.
  4. Be sure to tare the Alicat FP-25 before you begin the URG flow calibration.
Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Method 2: Standard Mode

Standard Mode connects the FP-25 to any air sampler by means of a hose barb and silicone tubing. FRM and FEM samplers will use their flow audit adapters for this setup.

  1. Thread the barb fitting into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Push the silicone tubing onto the barb.
  3. Fit the other end of the tubing onto the barb of the URG flow audit adapter.
  4. Connect the flow audit adapter to the URG downtube reducer, and place the assembly onto the top of the URG-3000 downtube.
  5. The URG-3000 temperature sensor is located at the bottom of its Module C box. Place the FP-25 external temperature probe near this location.
  6. Be sure to tare the Alicat FP-25 before you begin the URG flow calibration.
Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Alicat FP-25 flow calibrating a URG-3000 carbon sampler

Pressure Monitoring During External Leak Checks

The pass-through setup (Direct Mode) can also be used to provide pressure monitoring during leak check procedures. During the leak check, monitor internal pressure with absolute or gauge reference in the engineering unit of your choosing.

  1. Thread the Direct Mode downtube adapter into the outlet of the FP-25 until its face seal is tight against the flow body.
  2. Thread the Direct Mode PM inlet adapter into the inlet of the FP-25 until its face seal is tight against the flow body.
  3. Connect the FP-25 to the URG downtube reducer, and place the assembly onto the top of the URG-3000 downtube.
  4. Fit the URG leak check adapter onto the PM inlet adapter of the FP-25.
  5. Select gauge or absolute pressure on the FP-25 to monitor sampler pressure during the leak check.

Questions about FP-25 Flow Calibrators?




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