Emissions Laboratory

Particulate Weighing
Chamber PM-020

Controlled environment for gravimetric weighing of particulate matter filters — compliance with ABNT NBR 6601:2021. Precise temperature and humidity control, integrated analytical balance and NAPRO® sample management software.

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NAPRO Particulate Weighing Chamber PM-020

Controlled environment for gravimetric weighing per NBR 6601:2021

The Particulate Weighing Chamber PM-020 is a climate-controlled unit designed to meet the requirements of Chapter 4.7 of ABNT NBR 6601:2021, which specifies the environmental conditions for the weighing room and balance used in the determination of particulate matter in vehicle emissions testing.

The system maintains temperature and humidity within the limits required by the standard with high accuracy, ensuring traceability of all weighings. The chamber includes a high-precision analytical balance, high-efficiency filtration system, PLC and computer running NAPRO® software for sample control and recording.

Compliance with ABNT NBR 6601:2021 — Ch. 4.7
Temperature: 20 to 30 °C, accuracy ±1 °C
Relative humidity: 30% to 70%, accuracy ±3%
Filtration efficiency: 99.99%
High-precision analytical balance included
Sensors with traceable RBC calibration
NAPRO® software with reports and Wi-Fi communication
Internal stainless steel structure, polycarbonate windows

Precision environmental control

The chamber maintains the internal environment strictly within the limits required by the standard. The conditioning system integrates a temperature conditioner, an air circulator of 12 m³/h and a heater/humidifier of 1 kW, operating coordinately by the PLC to ensure stability even with variations in the external environment.

The temperature and relative humidity sensors carry traceable RBC calibration, ensuring the metrological validity of records. Required installation environment conditions are: temperature 15–30 °C and relative humidity 40–80%.

Construction and access

Internal stainless steel structure — contamination-resistant and easy to clean
External cladding in painted sheet metal
Polycarbonate windows with access port for sample handling
Sampling and work door: 400 × 500 mm
Dedicated microbalance space: 400 × 500 × 340 mm
Internal LED lighting

NAPRO® control software

The system includes a PLC and a Windows computer with real-time readings from the chamber and the balance. The NAPRO® software performs sample control and monitoring, with report generation, data archiving and Wi-Fi communication for sending tests and results.

Balance and included accessories

High-precision analytical balance
Filter weighing kit
Filter handling tweezers
Compact ionizer — neutralizes electrostatic charges on filters

Ambient air control

Temperature conditioner
Air circulator — 12 m³/h
Heater and humidifier — 1 kW
T° and RH sensors with RBC calibration

Technical Specifications

Model PM-020

Reference standard ABNT NBR 6601:2021 — Ch. 4.7

Chamber dimensions 861 W × 1000 H × 736 D mm

Temperature range 20 to 30 °C

Temperature accuracy ±1 °C

Relative humidity range 30% to 70%

Relative humidity accuracy ±3%

Filtration efficiency 99.99%

Air circulation 12 m³/h

Heater / Humidifier 1 kW

Work door 400 W × 500 H mm

Microbalance space 400 W × 500 H × 340 D mm

Internal material Stainless steel

Power supply 220 VAC — 60 Hz

Lighting LED

Included balance High precision

Sensor calibration Traceable RBC

Control system PLC + Windows + NAPRO® Software

Installation ambient temp. 15 to 30 °C

Installation ambient humidity 40% to 80% RH

Applications

Emissions Laboratories

Directly meets the requirements of ABNT NBR 6601:2021 for gravimetric measurement of particulate matter in vehicle emissions testing.

Automakers and R&D Centers

Controlled environment for the development, homologation and validation of exhaust aftertreatment systems in light and heavy-duty vehicles.

Certification Bodies

Metrological infrastructure for vehicle and component certification testing requiring traceability of particulate filter weighing.

Research Institutes

Support for studies on atmospheric emissions, DPF filter efficiency and development of new particulate control technologies.

Particulate WeighingChamber PM-020