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Knowledge Base

FP-25 calibrator setup instructions

The FP-25 is used to audit and calibrate flow, pressure, and temperature readings for the samplers and analyzers below:

  • PM10 and PM2.5 FRM samplers (16.7 LPM) – Mesa Labs PQ series, Met One E-FRM, Thermo Scientific Partisol 2000/2025(i) and Dichots, Tisch TE-Wilbur
  • PM10 and PM2.5 FEM analyzers (16.7 LPM) – Environment S.A. MP101M, Met One BAM-1020/1022 and E-BAM, Thermo Scientific BAM 5014i, SHARP 5030i and TEOM 1400(a/ab)/ 1405 and Dichots, Teledyne T640
  • IMPROVE network PM samplers (22.8 LPM)
  • Low-flow PM samplers (1-5 LPM) – Ecotech MircoVol and Protinus, Grimm EDM, Met One E-Sampler
  • Carbon speciation samplers (22.0 LPM) – URG-3000(N)
  • Carbon speciation samplers (6.7 LPM) – Met One SASS and SuperSASS
  • Black carbon analyzers (1-5 LPM) – Magee Aethalometer, Met One BC-1050

Choose your sampler below, and learn more about how to set it up with the FP-25 calibrator.

Step-by-step setup instructions

Met One BAM

Flow calibrating a Met One BAM 1020/1022 FEM Sampler

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.

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.

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.
Met One SASS

Flow calibrating a Met One SASS or Super SASS Speciation Sampler

  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.
Partisol 2000

Flow calibrating a Partisol/Thermo Scientific PM10 FRM Sampler

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.

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.

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.
Thermo 2025i

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

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.

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.

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.
URG-3000

Flow calibrating a URG-3000 Carbon Speciation Sampler

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.

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.

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.

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