TetraCal BGI is an easy-to-use, NIST-traceable standard for volumetric airflow, barometric pressure, and ambient temperature. TetraCal is a Venturi-based system with built-in compensation for changes in ambient temperature and pressure. All tetraCal systems are manufactured and tested in a calibration laboratory traceable to NIST as an ISO 17025 certified facility.

To use tetraCal®, simply connect the tetraCal® and sampling instrument with tubing and media, parallel. TetraCal® immediately begins providing flow rate and ambient conditions data on the display.

Using an external temperature probe accessory (optional), tetraCal can perform speciation sampler audits as documented by the EPA. TetraCal is the ideal calibrator for flow verification in environmental equipment and instrumentation, in accordance with US EPA requirements.

Product Details


  • Primary flow calibrators range from 0.1 to 30 LPM
  • Ideal for verification of environmental instruments via the Venturi principle, complying with US EPA recommendations.
  • Accuracy traceable to NIST and ISO 17025 of +/- 1%
  • Flow pressure and temperature sensors
  • LCD display for visualization of flow and other parameters.
  • Software for data download and report generation
  • Runs on 4 x AA alkaline batteries for up to 20 hours of operation.
  • Approximate weight 2.5 kilograms

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Frequently Asked Questions

Can we find the PT HAS product on the e-catalogue (LKPP) ?

Absolutely, almost all PT HAS products can be found in the e-catalogue.

How about the warranty for products from PT HAS ?

PT HAS Supply’s products include a 1-year official warranty for damage caused by manufactured defects.

Has the PT HAS product been calibrated? What if the calibration period is over?

Products from PT HAS have been calibrated and are ready to use. For further calibration, PT HAS already has a calibration lab that is ISO 17025 accredited and is ready to help customers who need recalibration.

What if the product has a problem and needs repair?

PT HAS has a local service center (in Jakarta), and our technicians are trained in the manufacture of the products we are agents for. For repairs and troubleshooting, we try to do it locally. and we make sure that the spare parts we supply are official spare parts from manufacturers.

Do we get training on using the tool after making a purchase at PT Has?

For all product purchases at PT HAS, usage training is included and is unlimited.

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