3M Personal Safety Division 3M™ QUESTemp° ™ Heat Stress Monitors ©3M 2013.
ii TABLE OF CONTENTS TABLE OF CONTENTS Up and Running ................................................................................................... 1 Check Wick and Fill Natural Wet Bulb ............................................................... 1 Measurements ...................................................................................................... 2 QUESTemp32 ................................................................................................
iii TABLE OF CONTENTS ACGIH ........................................................................................................... 10 United States Navy ........................................................................................ 10 Electrical power research institute (EPRI) ..................................................... 12 APPENDIX B: Accessories .................................................................................. 13 Customer Service .................................
1 Up & Running 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. 4. Use the arrow keys to set the display to the desired items. 5.
2 Measurements Measurements Measurements QUESTemp32 The QUESTemp32 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 QUESTemp32 measures three parameters: ambient or dry bulb temperature (DB), natural wet bulb temperature (WB), and globe temperature (G).
3 Keypad Operation Keypad Operation 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. I/O Enter The unit turns on with a single key press. The unit turns off by holding the key down while a countdown of 3-2-1 occurs in the lower right corner of the display. This key is also used to enter setup changes.
4 Placement for monitoring/testing Placement Placement for monitoring/testing The QUESTemp should be placed at a height of 3.5 feet (1.1m) for standing individuals or 2 feet (.6m) for seated individuals. Tripod mounting is recommended to get the unit away from anything that might block radiant heat or airflow. A 1/4"x20 threaded bushing on the bottom of the instrument allows mounting to a standard photographic tripod. Do not stand close to the unit during sampling.
5 Remote, Sensors 2 and 3 Remote, Sensors 2 & 3 Relative Humidity Sensor A relative humidity sensor is located in a compartment inside of the sensor bar housing. Slots in the housing allow air to circulate around the sensor. Remote, Sensors 2 and 3 The top sensor bar (sensor 1) may be removed from the instrument and used through a remote cable. Shelter the instrument and remote the sensor bar if the measured environment is expecting heavy rain or if temperatures are above 60C.
6 Power Options Power Options Power Options There are 3 options for powering the QUESTemp: a 9-volt alkaline battery, a NiMH (Nickel Metal Hydride) rechargeable 6-cell battery pack, and an AC adapter. A door on the back of the unit allows the user access to the 9-volt battery. The rechargeable battery pack is located inside of the unit. If the rechargeable battery pack ever needs to be replaced, it can be accessed by removing the screws from the bottom panel of the unit.
7 Power Options 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.
8 Specifications Specifications 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. Size Height 9.2in (23.5cm); Width 7.2in (18.3mm); Depth 3.
9 Product Markings and Special Conditions Battery Life 9V alkaline: 140 hours Rechargeable Nickel Metal Hydride: 300 hours (Adding additional sensor bars reduces battery life.
Appendix A: 10 Heat exposure tables APPENDIX A: Heat Exposures Tables APPENDIX A: Heat Exposures Tables ACGIH Screening Criteria for Heat Stress Exposure. WBGT values in C. NOTE: according to the ACGIH’s guidelines, the temperature values represent a work and rest process which is explained in the standards. Please refer to the ACGIH TLV’s and BEIs for specific details.
11 APPENDIX A: Heat Exposures Tables PHEL Curves (Total Exposure Time in Hours: Minutes) WBGT(F) I II III IV V VI 80.0 >8:00 >8:00 >8:00 8:00 6:35 4:30 81.0 82.0 83.0 84.0 85.0 86.0 87.0 88.0 89.0 90.0 91.
12 APPENDIX A: Heat Exposures Tables Electrical power research institute (EPRI) The recommended working hours are shown based on a maximum of four hours. A time of 4:01 indicates greater than 4 hours.
13 Appendix B: APPENDIX B: Accessories Accessories 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 15-910 220VAC to 9VDC adapter 15-680 Verification module 53-923 Tripod 59-045 Replacement wicks 56-679 Water bottle 2 oz.
14 Customer Service Customer Service Contacting 3M Detection Should your 3M equipment need to be returned for repair or for recalibration, please contact the service department at the following number or access the online form via the website. For technical issues, please contact Technical Support. Should your 3M equipment need to be returned for repair or for recalibration, please contact the service department at the following number or access the online form via the website.
About Us 3M Detection Solutions is a world class manufacturer of rugged, reliable instrumentation and software systems that help monitor and evaluate occupational and environmental health and safety hazards, including noise dosimetry, sound level monitoring, heat stress, indoor air quality and select toxic/combustible gases. The 3M Detection brand of instrumentation is used by safety and industrial hygiene professionals to help comply with applicable occupational standards and regulations.
