NOVEL · Technical Expertise and Company Information
Select the right instrument family for occupational hygiene, personal exposure and environmental measurements. NOVEL offers technology and brand options for noise, thermal comfort, temperature and humidity, PM and aerosols, respirator fit testing, gas detector tubes, cleanroom particle counting, air sampling pumps and flow calibration. The measurement method, application and reporting objective guide the selection.
GAS DETECTOR TUBES
TSI/Casella dBadge2, CEL-632, and other appropriate class sound measurement instruments are selected according to personal noise exposure, workplace environmental measurements, and the acoustic calibration plan. Evaluate IEC 61672, IEC 61252, and standards suitable for the measurement purpose together.
Instruments such as LSI Lastem HeatShield and TSI Questemp are used to monitor WBGT, temperature, relative humidity, radiant heat, and air velocity in hot/cold working environments using suitable sensors. ISO 7243 and ISO 7730 assessments are conducted depending on the application.
Weather stations, microclimate data loggers and indoor monitoring sensors. Choose temperature, humidity, wind and other parameters for the application.
Real-time or long-term tracking of parameters such as particle concentration, CO₂, temperature, and relative humidity is possible using TSI DustTrak, Q-Trak, AirAssure, and suitable sensor options. Optical photometer measurement and regulatory gravimetric measurement are not the same process.
Fit test instruments such as TSI PortaCount 8040/8048 are used to assess mask fit to the user's face and sealing performance. Test protocol and adapter selection must be made according to the respirator class. The link directs to verified product details rather than a separate category.
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In the TSI EVM family, photometric particle measurement can be evaluated together with gas, VOC, CO₂, temperature, and humidity data depending on compatible sensor configurations. Instantaneous PM trends do not directly replace gravimetric personal exposure. The link directs to the verified EVM product.
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Colorimetric detector tubes are selected for instantaneous field checks of specific gases or vapours; passive/active TWA tubes are selected for long-term average exposure assessment based on tube-specific protocols. Chemical substance, range, sample volume, and environmental interferences are critical.
Airborne particle counts and size channels can be monitored with TSI AeroTrak 9303/9306. ISO 14644-1 and instrument ISO 21501-4 specifications are taken into account for cleanroom classification and monitoring requirements. The link directs to verified product details.
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Sensidyne Gilian GilAir Plus and suitable low/high-flow pumps provide controlled sampling with filter cassettes or sorbent tubes. Pump flow rate, total volume, sampling head, and laboratory analytical method must be selected together.
Suitable traceable calibrators are used for pre- and post-field flow rate checks of sampling pumps, while mass flow meters are used in laboratory and process measurements. Operating range, pressure drop, and measurement uncertainty are key selection criteria.
Appropriate sampling heads, filter diameters, cassettes, and personal pumps are planned together for inhalable and respirable fractions. The method is selected according to MDHS 14/4 or relevant NIOSH/ISO method requirements; it should be remembered that accessories do not perform measurements on their own.
Appropriate electrical safety and voltage checking instruments for industrial plant and maintenance teams are selected based on target voltage, contact/non-contact measurement method, and application category. They do not replace isolation and occupational safety procedures.
Occupational Safety and Environmental Measurement
Personal exposure in a worker's breathing or hearing zone and fixed-point area measurement are not performed for the same purpose or with the same method. Equipment such as personal noise dosimeters and air sampling pumps are used with heads and durations appropriate to the measurement method; direct-reading instruments can be valuable for preliminary screening and trend analysis.
A sound level meter or personal dosimeter complying with relevant standards is required for noise exposure; WBGT and, depending on the application, air velocity, humidity, and radiant temperature are required for heat stress; relevant parameters are required for PMV/PPD in thermal comfort. Instrument class, calibration, and measurement protocol must be selected together.
Instruments such as DustTrak and EVM indicate rapid concentration trends via optical/photometric methods. In contrast, gravimetric exposure assessment requires an appropriate sampling fraction, filter, flow rate, and laboratory analysis. Optical results should be supported by gravimetric correction where necessary.
The target flow rate, personal sampling head, filter/adsorbent, sampling duration, and flow calibrator range must be compatible with the selected chemical substance and standard method. NOVEL can provide technical support in selecting suitable pumps and calibrators.
Occupational Safety and Environmental Measurement
Separate instrument families are used for distinct parameters such as noise exposure, heat stress/WBGT, temperature-humidity, CO₂, VOCs, gases, dust and aerosol concentrations, cleanroom particle counting, and personal air sampling.
No. Noise dosimeters are generally used to monitor personal exposure throughout a work shift; sound level meters are used to assess sound levels at designated locations/durations. The relevant standard and assessment method are fundamental to instrument selection.
No. WBGT is used for screening heat stress in hot working environments. PMV/PPD assesses thermal comfort using data including temperature, radiant temperature, air velocity, humidity, clothing, and metabolic activity.
TSI PortaCount 8040/8048 is used in quantitative respirator fit testing with appropriate adapters and test protocols. Test methods and accessories may vary depending on the respirator type used.
Generally, no. Optical aerosol instruments provide rapid field/trend data; personal gravimetric exposure may require sampling with suitable filters, calibrated flow rates, and laboratory analysis.
Relevant standards such as the ISO 14644 family for cleanroom classification and monitoring, and ISO 21501-4 for counter performance, are evaluated. AeroTrak models are compared according to required size channels and flow rate configurations.
Direct-reading colorimetric tubes provide measurement results directly from the tube scale during short-term sampling. In TWA tubes, average exposure over a specified period is assessed via passive diffusion or controlled active sampling.
No. NIOSH RELs are recommended US references, while OSHA PELs are US regulations. Appropriate national legislation, TWA/STEL exposure limits, and measurement competence must be evaluated separately in Turkey.
NOVEL provides technical support for instrument selection based on target parameters, application standards, measurement ranges, sampling accessories, and reporting requirements, as well as for determining appropriate servicing and calibration needs. Accreditation scope must be confirmed according to the service.
