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PEWA QUESTemp 32 Operator's Manual

Thermal environment monitor
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QUESTemp° 32
Thermal Environment Monitor
Operator's Manual

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Summary of Contents for PEWA QUESTemp 32

  • Page 1 QUESTemp° 32 Thermal Environment Monitor Operator’s Manual...
  • Page 2 Copyright 5/2004 Revision B P/N 056-661...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. UP AND RUNNING ....................4 2. MEASUREMENTS ....................5 °32 ......................5 QUEST WET BULB GLOBE TEMPERATURE..............5 HEAT INDEX / HUMIDEX ..................5 3. KEYPAD OPERATION .................... 6 I/O ENTER ........................6 UP ARROW......................... 6 DOWN ARROW ......................

  • Page 4: Up And Running

    UP AND RUNNING 1. Make sure the wet bulb’s wick is clean. Fill the reservoir with distilled water. 2. Place the QUESTemp in the work area in a safe location approximately 3.5 feet off the ground. 3. Turn the unit ON. If the battery voltage displayed during the power-on sequence is less than or equal to 6.4 volts, replace or recharge the batteries.

  • Page 5: Measurements

    2. MEASUREMENTS QUESTemp°32 The QUESTemp°32 portable area heat stress monitor computes the Wet Bulb Globe Temperature (WBGT). The WBGT is an accepted measurement for determining the heat stress level imposed on an individual in a given environment. The QUESTemp°32 measures three parameters: ambient or dry bulb temperature (DB), natural wet bulb temperature (WB), and globe temperature (G).

  • Page 6: Keypad Operation

    of 20% - 99%. Outside of this range, the instrument will show dashes in the display for the Humidex. 3. KEYPAD OPERATION The unit operates using a membrane keypad with 4 keys. The I/O ENTER key responds when the key is released while all other keys respond when the key is pressed.

  • Page 7: Sensors

    the weighted average which only appears if a WBGT is displayed and all three sensor bars are attached. The following measurements can be accessed on the display: Screen 1: WET (WET BULB) DRY (DRY BULB) Screen 2: GLOBE Screen 3: WBGTi (WBGT INDOORS) WBGTo (WBGT OUTDOORS) Screen 4:...

  • Page 8: Dry Bulb Thermometer

    copper sphere and measuring the temperature rise. The WBGT index is based on the response of a 6 inch diameter globe. The QUESTemp uses a 2 inch diameter globe for a faster response time. The temperature of the 2 inch globe is correlated to match that of a 6 inch globe. As an option, a sensor array with a 6 inch diameter globe is available.

  • Page 9: Operational Check

    the WBGT index at three heights corresponding to the worker's ankles, abdomen and head and perform a weighted average on those values. It is computed using the formula: WBGT = (WBGT + (2 x WBGT ) + WBGT head abdomen ankles The QUESTemp always assigns the top sensor bar the double weighting.

  • Page 10: Volt Alkaline Battery Replacement

    The 2-position switch located in the battery compartment must be set by the user if the power supply method is changed. The up position is for the 9 volt battery. The down position allows for either the AC adapter or the rechargeable batteries.

  • Page 11: Nimh Battery Pack

    NiMH BATTERY PACK WARNING: Recharge batteries only in a non-hazardous environment. The NiMH rechargeable battery pack is charged in the instrument using Quest’s AC adapter #015-910. A discharged battery pack requires an “overnight” charge of 16 hours. Leaving the AC adapter plugged in for extended lengths of time or when operating the instrument will not harm the rechargeable batteries.

  • Page 12: Specifications

    10. SPECIFICATIONS Measurements: Globe, dry bulb, wet bulb, WBGTin, WBGTout, WBGT weighted average (if 3 sensor sets), relative humidity, Heat Index, Humidex. Temperatures given in Celsius or Fahrenheit. Languages: English, French, Spanish, Italian, German Housing: Designed water resistant to a light rain or mist. If rain is frequent, best practice would be to remote the sensor bar and keep the instrument sheltered.
  • Page 13 Remote Sensor Bars: 2 x 15pin D-sub jacks are located on the side of the unit for plugging in 1 or 2 additional sensor bars by using remote cables up to 200 feet (61m). The top sensor bar can also be remote with a cable. Power Options: 9V alkaline, 7.2V NiMH rechargeable pack (charged in the unit), or AC adapter wall power cube (AC adaptor will operate the unit or recharge the...

  • Page 14: Product Markings And Special Conditions

    11. PRODUCT MARKINGS AND SPECIAL CONDITIONS KEMA 04ATEX1072 X <Ex> II 2 G EEx ia IIC T3 Compliance with Essential Health and Safety Requirements has been assured by compliance with: EN 50014 : 1997 and EN 50020 : 2002 The year of manufacture is determined by the third character in the instrument’s serial number.

  • Page 15: Appendix A : Heat Exposure Tables

    12. APPENDIX A : HEAT EXPOSURE TABLES ACGIH Screening Criteria for Heat Stress Exposure. WBGT values in °C (°F). Acclimatized Work Very Demands Light Moderate Heavy Heavy 100% Work 29.5 27.5 26.0 (85.1) (81.5) (78.8) 75% Work; 30.5 28.5 27.5 25% Rest (86.9) (83.3)

  • Page 16: Appendix B : Accessories

    13. APPENDIX B : ACCESSORIES Sensor array with 2 inch globe 56-795 Sensor array with 6 inch globe 56-780 6 Foot shielded remote sensor cable 53-924 25 Foot shielded remote sensor cable 53-925 100 Foot shielded remote sensor cable 53-926 200 Foot shielded remote sensor cable 53-927 120VAC to 9VDC adapter...

  • Page 17: Quest Service And Warranty Policy

    14. QUEST SERVICE AND WARRANTY POLICY Service Information Congratulations! You have purchased one of the finest instruments available, manufactured by one of the most respected names in safety & industrial hygiene instrumentation. Your instrument is backed by a limited warranty that seeks complete customer satisfaction.
  • Page 18 Warranty Policy Quest Technologies warrants our instruments to be free from defects in materials and workmanship for one year under normal conditions of use and service. For U.S.A. customers, we will replace or repair (our option) defective instruments at no charge, excluding batteries, abuse, misuse, alterations, physical damage, or instruments previously repaired by other than Quest Technologies.

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