LUTRON Heat Index WBGT Meter

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SPECIFICATION :
LCD Display size: 52 mm x 38 mm LCD with green backlight (ON / OFF).

  • Measurement
  • Wet bulb globe temperature (WBGT) @ Indoor / Outdoor
  • Black globe temperature (TG)
  • Air temperature (TA)
  • Wet bulb temperature (WB)
  • Humidity
  • Dew point temperature
  • Wet bulb formula WBGT Indoor / Outdoor and no sun: WBGT = (0.7 x WB) + (0.3 x TG) Temp globe. 
  • Outdoor and full sun: WBGT = (0.7 x WB) + (0.2 x TG) + (0.1 x TA)

WBGT WBGT alarm setting Adjustable alarm setting, if the WBGT value
over the alarm threshold, the buzzer will sound along with the flashing Display.
Datalogger Sampling Time Setting range Auto 1 second to 3600 seconds @
 Sampling time can set to 1 second, but may the data memory loss.
Manual Push the data logger button once will save data one time. @ Set the sampling time to 0 second. @ Manual mode, can also select the 1 to 99 position (Location) no.

Data error no. 0.1% of the total saved data is max.
Memory Card SD memory card. 1 GB to 16 GB
Advancedsetting
 * Set clock time (Year / Month / Date, Hour / Minute / Second) * Set
WBGT alarm value * Decimal point of SD card setting * Auto power OFF
management * Set beep Sound ON / OFF * Select the temperature unit to
or. ℃℉ * Set sampling time * SD memory card format
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Sampling Time of Display Approx. 1 second.
Data Output RS 232 / USB PC computer interface. * Connect the optional RS232 cable UPCB-02 will get the RS232 plug. * Connect the optional USB cable USB-01 will get the USB plug.
Operating Temperature 0 to 50 ℃.
Operating Humidity Less than 85% R.H.
Power Supply * AAlkaline or heavy duty DC 1.5 V battery (UM3, AA) x 6 PCs, or equivalent.
* ADC 9V adapter input. (AC / DC power adapter is optional).
Power Current Normal operation (w / o SD card save data and LCD Backlight is OFF): Approx. DC 5 mA.
When the SD card save the data but and LCD Backlight is OFF): Approx. DC 25 mA.
* AIF LCD backlight on, the power consumption will increase of approx. 11 mA.

Meter Dimension 177 x 68 x 45 mm
Black brass ball (7.0 x 2.7x 1.9 inch) Round, 75 mm dia

Standard Accessories  (Termasuk)* 
Instruction manual ............................ 1 PC *
Black brass ball (with sensors) ...... . 1 PC *
Soft carrying case, CA-05B ................ 1 PC

Calibration Certificate............1 PC

Optional Accessories ( Tidak termasuk )
* SD Card (2 GB)
* AC to DC 9V adapter. 
* USB cable, USB-01. 
* Data Acquisition software, SW-U801-WIN. 

Black globe temperature (TG)
Range ℃ 0 to 80 ℃
32 ℉ to 176 ℉.
℃ Resolution 0.1 ℃
℉ 0.1 ℉
Accuracy @ 15 to 40 ℃℃ ± 0.6 ℃
℉ ± 1.1 ℉

Humidity
Range 5% to 95% R.H.
Resolution 0.1% R.H.
≧ 70% RH Accuracy: ± (3% of reading + 1% RH). <70% RH:
± 3% RH.

Dew Point Temp.
Range ℃ -25.3 ℃ to 48.9 ℃
Resolution 0.1 ℃
℉ Range -13.5 to 120.1. ℉℉
Resolution 0.1 ℉.
Remark: * Dew Point Temp. value is calculated from the Humidity / Air Temp. measurement automatically. * The Dew Point Temp. accuracy is sum accuracy value of Humidity and Air Temperature measurement ..

Wet bulb Temp.
Range ℃ -21.6 ℃ to 50.0 ℃
Resolution 0.1 ℃
℉ Range -6.9 to 122.0. ℉℉
Resolution 0.1 ℉.
Remark: * Wet bulb display value is calculated from the Humidity / Air Temp. measurement automatically. * The Dew Point accuracy is sum accuracy value of Humidity and Air Temperature measurement ..

 Recommendations to heat exposure level for working and physical activity. (Permissible heat exposure threshold limit)

ELECTRICAL SPECIFICATIONS (23 ± 5 )
Wet bulb globe temperature (WBGT)
Indoor Range ℃ 0 ℃ to 59 ℃
Outdoors 0 ℃ to 56 ℃
℉ Indoor 32 to 138 ℉
Outdoor 32 to 132 ℉
* Indoor ℃ Accuracy ± 1 ℃ (15 to 59 ℃) ± 1.5 ℃ (Others)
℉ ± 1.8 ℉ (59 to 138 ℉) ± 2.7 ℉ (Others)
* Outdoor ℃ Accuracy ± 1.5 ℃ (15 to 56 ℃) ± 2 ℃ (Others)
℉℉ ± 2.7 (59 to 132 ℉) ± 3.6 ℉ (Others)

Work / rest regimen (Each hour) Light Moderate Heavy
Continuous work 30 ℃ (86 ℉) 26.7 ℃ (80 ℉) 25 ℃ (77 ℉)
75% work, 25% rest 30.6 ℃ (87 ℉) 28 ℃ (82 ℉) 25.9 ℃ (78 ℉)
50% work, 50% rest 31.4 ℃ (89 ℉) 29.4 ℃ (85 ℉) 27.9 ℃ (82 ℉)
25% work, 75% rest 32.2 ℃ (90 ℉) 31.1 ℃ (88 ℉) 30 ℃ (86 ℉)
Source: AGGIH, 1992 (The American Conference ofGovernmental Industrial Hygienists)
 
 

WBGT INDEX and PHYSICAL EXERCISE
WBGT Formula:
WBGT Flag Activity Intensity
<26.7 ℃ (<80 ℉) White Normal activity. Caution should be taken.
26.7 to 29.4 ℃ (80 to 84.9 ℉) Green descretion is required in planning intense physical activity.
29.5 to 31 ℃ (85 to 87.9 ℉) Yellow Intense activity for new and unacclimatized persons should be curtailed.
31.1
 to 32.2 ℃ (88 to 89.9 ℉) Red Intense exercise must be curtailed for
Reviews those with less than 12 weeks of training in hot weather. Be on high alert
≧ 32.2 ℃ (90) ≧℉ Black Cancel all outdoorexercise.

 
Air temperature (TA)
Range ℃ 0 to 50 ℃
32 ℉ to 122 ℉.
℃ Resolution 0.1 ℃
℉ 0.1 ℉
Accuracy @ 15 to 40 ℃℃ ± 0.8 ℃
℉ ± 1.5 ℉