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15

9.  PC COMMUNICATIONS 

 

The QUESTemp

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36 has the flexibility to be set up and controlled through 

computer software.  The programmable start and stop time feature is only 
accessible through the computer.  The instrument also has the capability of sending 
live data while measuring.  These features are best utilized using QuestSuite

TM

 

software.  To write custom software for working with the QUESTemp

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36, call 

Quest Technologies for the programming commands. 
 

 

10.  SENSORS 

 

NATURAL WET BULB THERMOMETER 

The natural wet bulb thermometer gives an indication of the effects of 
humidity on an individual.  Relative humidity and wind speed are taken into 
account by measuring the amount of evaporative cooling taking place at a 
thermometer covered with a moistened wick.  The QUESTemp uses a cotton 
wick immersed into a reservoir containing distilled water.  Ordinary tap water 
should not be used, as the contaminants that are left behind after evaporation 
will shorten the life of the wick and cause high readings.  If the wick is 
discolored it should be replaced.  To replace the wick, slide the old wick off 
the top of the sensor.  Place a new wick over the sensor, making sure that the 
bottom of the wick is down in the reservoir.  

 

GLOBE THERMOMETER 

The globe thermometer gives an indication of the radiant heat exposure on 
an individual due to either direct light or hot objects in the environment.  
This is accomplished by placing a temperature sensor inside a blackened 
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. 

 

DRY BULB THERMOMETER 

The dry bulb thermometer measures the ambient air temperature.  This 
measurement is used in the outdoor WBGT calculation when a high solar 
radiant heat load may be present.  The series of white plates surrounding the 
sensor shield it from radiant heat. 

 

 

16 

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.  

 

11.  AIRFLOW 

(Available using Quest’s Air Probe) 
 
Airflow is measured in meters per second over a range of 0 to 20m/s in 0.1m/s 
increments.  The sensor should be placed or held perpendicular in the air stream.  
Unlike many anemometers, the omni-directional sensor does not require rotating 
to find the maximum reading.  Be careful not to block the airflow with your 
body during measurements.  The sensor’s measuring tip is fragile; be cautious if 
measuring in ducts.  
 
The Air Probe may be either hand held or mounted behind the Questemp

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36 

using the mounting bracket hooked to the sensor bar beneath the wet bulb. 
 
A green lamp indicator in the Air Probe indicates that it is turned on and the 
battery is good.  If the green indicator turns off while the switch is in the ON 
position, replace or recharge the battery. 
 

 

Содержание QUESTempo 36

Страница 1: ...ld be disregarded effective 7 1 03 within the member countries of the European Union EU At this time this product is not approved in accordance with the new ATEX Directive and is not sold for use in hazardous atmospheres or explosive zones by customers within the EU Outside of the EU all references to intrinsic safety continue without change 2 Copyright 9 2001 Revision B P N 056 663 ...

Страница 2: ...NSORS 15 NATURAL WET BULB THERMOMETER 15 GLOBE THERMOMETER 15 DRY BULB THERMOMETER 15 RELATIVE HUMIDITY SENSOR 16 11 AIRFLOW 16 OPERATING SEQUENCE 17 DATA LOGGING AIRFLOW 17 BATTERIES FOR AIR PROBE 17 12 REMOTE SENSORS 2 AND 3 17 TRI SENSOR WEIGHTED AVERAGE 18 13 OPERATIONAL CHECK 18 14 POWER OPTIONS 18 BATTERY REPLACEMENT 19 APPROVED 9 VOLT BATTERIES 19 CHARGING THE NIMH BATTERY PACK 19 15 SPECIF...

Страница 3: ...or dry bulb temperature DB natural wet bulb temperature WB globe temperature G and relative humidity RH It computes the Wet Bulb Globe Temperature WBGT stay times for three possible indices and the Heat Index HI or the Canadian Humidex Using inputs on the side of the instrument two additional sensor arrays can monitor up to three locations simultaneously Measure airflow in meters per second by plu...

Страница 4: ...etermination of the PMV and PPD indices and specification of the conditions for thermal comfort 8 4 OPERATIONAL MODES Use the UP ARROW and DOWN ARROW keys to move the marker in the display in front of the desired mode Pressing the I O ENTER key will select the mode VIEW Displays the measured data but does not log it If more than one set of sensors is plugged into the unit they can be displayed by ...

Страница 5: ...ith 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 select a mode or enter setup changes Pressing and releasing the key while viewing temperatures causes the display to view the next available sensor bar indicated in the upper right corner of the display UP ARROW Changes items appearin...

Страница 6: ...h sensor is recorded at the interval set by the logging rate Every time RUN STOP is pressed a session is either started or ended in memory Each session contains a header with time date and summary information MEMORY TABLE Gives the number of logging DAYS Log Rate 1 min 2 min 5 min 10 min 15 min 30 min 60 min 1 sensor 11 2 22 5 56 2 112 4 168 6 337 3 674 5 2 sensors 5 6 11 2 28 1 56 2 84 3 168 6 33...

Страница 7: ... FEB 01 11 07 32 MAXIMUM LEVELS Sensor 3 WBGT IN 69 0 21 FEB 01 11 09 56 WBGT OUT 68 6 21 FEB 01 11 09 56 WET BULB 58 8 21 FEB 01 11 09 56 DRY BULB 88 6 21 FEB 01 11 10 08 GLOBE 93 0 21 FEB 01 11 10 03 HEAT INDEX 0 00 XXX 00 00 00 00 REL HUMIDITY 11 21 FEB 01 11 07 32 MAXIMUM LEVELS Sensor WEIGHTED AVERAGE WBGT IN 72 1 21 FEB 01 11 10 14 WBGT OUT 71 4 21 FEB 01 11 10 14 14 Session 3 Page 2 Sensor ...

Страница 8: ...ure sensor inside a blackened 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 DRY BULB THERMOMETER The dry bulb...

Страница 9: ...ous monitoring of up to three sensor arrays using connecting cables 18 Cable lengths of up to two hundred feet 61 meters may be used without a decrease in accuracy provided the environment does not contain strong electromagnetic fields The data from these arrays may be viewed separately or combined into a weighted average WBGT reading per ISO 7243 Change the displayed sensor bar by pressing and re...

Страница 10: ...aline battery APPROVED 9 VOLT BATTERIES Eveready Energizer 522 EN22 Duracell MN1604 Panasonic 6AM6X Rayovac A1604 CHARGING THE 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 plugg...

Страница 11: ... 0 1m s increments Sensor Omni directional heated thermistor Accuracy 0 1 m s 4 of measurement value Battery Life 6 8 hours for fully charged NiMH battery Charge Time 9 hours 22 16 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 ...

Страница 12: ...0 2 00 90 0 5 40 5 00 4 10 3 25 2 40 1 50 91 0 5 15 4 35 3 50 3 10 2 25 1 40 92 0 4 50 4 10 3 30 2 55 2 15 1 30 93 0 4 25 3 50 3 15 2 40 2 00 1 25 94 0 4 05 3 35 3 00 2 25 1 50 1 15 95 0 3 45 3 15 2 45 2 15 1 45 1 10 96 0 3 25 3 00 2 30 2 05 1 35 1 05 97 0 3 10 2 45 2 20 1 55 1 25 1 00 24 PHEL Curves Continued WBGT F I II III IV V VI 98 0 2 55 2 35 2 10 1 45 1 20 0 55 99 0 2 40 2 20 2 00 1 40 1 15...

Страница 13: ... 0 18 0 46 0 25 0 15 0 47 0 23 0 0 48 0 20 0 0 49 0 18 0 0 50 0 15 0 0 26 17 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 Serial computer cable 54 715 Parallel printer c...

Страница 14: ... email at service quest technologies com via telephone at 1 262 567 9157 or via fax at 1 262 567 4047 U S Customers Only Go to the service section of our web site at www quest technologies com Contact us via email at service quest technologies com Contact us at 800 245 0779 Office hours are 8 00 AM to 5 00 PM U S Central Time 28 Warranty Policy Quest Technologies warrants our instruments to be fre...

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