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TSI Questemp Series

Occupational Safety and Environmental Measuring Instruments

TSI Questemp Series

Thermal Comfort - WBGT - Heat Stress Monitor + Airflow Measurement, ISO-7730 - ISO-7243-Heat Index, Humidity, ISO-7933, Full ISO-11079 Compliance, PMV-PPD Calculation

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Product Specifications

  • Standard-Compliant Thermal Comfort Measurement The Questemp instrument is a complete system manufactured in compliance with international standards and meeting national regulations. Capable of measuring ISO-7243-compliant WBGT values separately in real time for indoor and outdoor environments, the instrument can also perform real-time ISO-7730*-compliant PMV/PPD measurements. It complies with Heat Index, Humidex, ISO-7933, and ISO-11079 calculation standards.

  • All Calculations with Superior Software Quest DMS PC software is one of the most comprehensive software packages designed for thermal comfort measurement data. With this software, thermal comfort projects and reports can be generated, simulations performed, and logged data and results edited.

  • Capability to Operate Even in Harsh Field Conditions Despite its compact and portable build, Questemp is an exceptionally rugged instrument, designed for heavy-duty indoor and outdoor operating conditions and certified to IP-54 ingress protection rating.

  • Unmatched Enclosure Design and Long Operating Time With the Questemp instrument, reliable measurements can be performed by placing it on a horizontal surface, handheld, or mounted on a tripod. With alkaline or rechargeable battery options, it can operate for extensive hours without requiring battery replacement.

    • *According to the ISO-7730 standard, metabolic rate (met), clothing insulation (CLO), and mechanical efficiency (ETA) values must be entered separately for PMV-PPD calculation.
    Product Documents

  • Operation of the QUESTemp Thermal Comfort instrument

  • QUESTemp Thermal Comfort instrument power options and rechargeable battery installation

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    Technical Specifications

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    MODEL

    Wet Bulb Models (with Reservoir)

    Waterless Wet Bulb Models

    Measurement Parameters

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    Ambient Temperature + + + + + +
    Wet Bulb Temperature + + + + + +
    Globe Temperature + + + + + +
    Relative Humidity + + + + + +
    Air Velocity Opt. Opt.
    WBGT (Wet Bulb Globe Temperature) (Indoor) index + + + + +
    WBGT (Wet Bulb Globe Temperature) (Outdoor) index + + + + + +
    Heat index / HUMIDEX + + + + +
    °C or °F temperature reading + + + + + +
    Data logging at 1, 2, 5, 10, 15, 30, 60-minute intervals + + + +
    Event logging mode Opt. + +
    Time & date stamp feature + + + +
    ACGIH TLV, US Navy, EPRI stay times + +

    Sensors

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    Ambient Temperature sensor: 1000 ohm platinum 0-120°C measurement range, +/-0.5°C accuracy + + + + + +
    Wet Bulb Temperature sensor: 1000 ohm platinum 0-120°C measurement range, +/-0.5°C accuracy + + +
    Waterless wet bulb (humidity) sensor: 0-80°C measurement range, +/-1.1°C accuracy + + + +
    Globe sensor: 1000 ohm platinum 0-120°C measurement range, +/-0.5°C accuracy + + + + + +
    Relative humidity sensor: 20-95% RH measurement range, +/-5% accuracy + + + + +
    Air velocity probe: 0-20 m/s measurement range, +/-(0.1 m/s) Opt.

    Operating Temperature Ranges

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    Sensors: -5°C to 100°C + + + +
    Electronics: -5°C to 60°C + + + +

    Data Management

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    DMS + + +
    Thermal Comfort Index (compliant with ISO 7730) Predicted Mean Vote (PMV) Predicted Percentage of Dissatisfied (PPD) Opt.

    Output

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    RS-232 serial printer/computer interface + + +
    Parallel printer interface + + +

    Power Supply

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    9V disposable battery (140-hour battery life) + + +
    9V disposable battery (80-hour battery life) +
    NiMH rechargeable battery (300-hour battery life) + + +
    NiMH rechargeable battery (160-hour battery life) +
    AC power adapter + + + +

    Mechanical

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    Sensor bar extension cable (measurement capability up to 61 m) + + + +
    Water and dust ingress protection feature + + + +

    Standards

    QT 32

    QT 34

    QT 36

    QT 44

    QT 46

    QT 48
    Electromagnetic compatibility: CE Mark + + + +
    Measurement and Standards Approach
    The ISO 7243 WBGT approach should be taken into account in heat stress assessment; ISO 7726 should be taken into account for thermal environment measurement principles. In thermal comfort studies, ISO 7730 is evaluated according to the application, whereas in cold stress, the relevant IREQ methods are evaluated separately. Globe diameter, sensor placement, and measurement duration must be selected in compliance with the method used.

    Sectors

    Occupational Health, Occupational Hygiene and EnvironmentIron & Steel, Metals and MiningPower and InfrastructureConstruction and Civil EngineeringAgriculture, Food and BeverageAutomotive and Transportation
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    Brand and support in Turkey: TSI Turkey — NOVEL Ltd., Sole Authorised Distributor of TSI in Turkey. Please review the brand page for brand product lines, related instruments, and technical support details.

    Notice: The technical information, product specifications and images on this page are based on manufacturer publications. The manufacturer may change specifications without notice. For current specifications or assistance in selecting a suitable product for your application, please contact NOVEL at info@novel.com.tr .

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