Description
FEATURES:
- Introduction :WBGT ( wet-bulb globe temperature ) was developed as a monitoring basis at US military training camps
and became widespread for the use in workplaces and sports situation It is suggested in the international standard ISO 7243, OSHA ( US Occupation Safety ),Japan Society for Occupational Health and the SMA Sports Medicine Australia ) in establishing the
permissible heat exposure limits in health , sports or other physical activities. - Measurement :WBGT value ( Indoor/Outdoor Wet bulb globe temperature ), Black globe temperature, Humidity,
Air temperature, Wet bulb temperature, Dew point Temp.. - Adjustable WBGT alarm setting, if the WBGT value over the alarm threshold, the buzzer will sound along with the flashing Display.
- Using to control and monitor of physical activity in hot environment to limit the danger of heat related injuries.
- Globe temperature measurement use the Pt sensor,high accuracy
- Fast humidity measuring response time
- Direct measurement of the radiation effect with a brass black ball in 75 mm dia.
- Sensor protecting mechanism.
- Real time SD memory card Datalogger, it Built-in Clock and Calendar, real time data recorder , sampling time set from 1 second to 3600 seconds
- Manual datalogger is available ( set the sampling time to 0 ), during execute the manual datalogger function, it can set the different position ( location ) No.( position 1 to position 99 )
- Innovation and easy operation, computer is not need to setup extra software, after execute datalogger, just take away the SD card from the meter and plug in the SD card into the computer,it can down load the all the measured value with
the time information ( year/month/date/hour/minute/second ) to the Excel directly, then user can make the further data or graphic analysis by themselves. - SD card capacity : 1 GB to 16 GB
- LCD with green light backlight, easy reading.
- Can default auto power off or manual power off.
- Data hold, record max. and min. reading.
- Microcomputer circuit, high accuracy.
- Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
- RS232/USB PC COMPUTER interface.
GENERAL SPECIFICATIONS
| Circuit | Custom one-chip of microprocessor LSI circuit |
| Display | LCD size : 5.2 cm x 3.8 cm 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 |
| WBGT formula Wet bulb globe Temp |
Indoor/Outdoor and no sun : WBGT = ( 0.7 x WB ) + ( 0.3 x TG ) Outdoor and full sun : WBGT = ( 0.7 x WB ) + ( 0.2 x TG ) + ( 0.1 x TA ) |
| Datalogger Sampling Time Setting range |
Auto:1 second to 3600 seconds @ Sampling time can set to 1 second, but memory data may 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 total saved data max. |
| Memory Card | SD memory card. 1 GB to 16 GB |
| Advanced setting |
|
| 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 °C . |
| Operating Humidity |
Less than 85% R.H. |
| Power Supply | A Alkaline or heavy duty DC 1.5 V battery ( UM3, AA ) x 6 PCs, or equivalent. |
| Power Current |
|
| Weight | 0.489 kg/1.08 LB. |
| Dimension | Meter,177 x 68 x 45 mm Black brass ball,(7.0 x 2.7x 1.9 inch)Round, 7.5 cm dia |
| Standard Accessories Included | Instruction manual……………………….1 PC Black brass ball ( with sensor )……. 1 PC Soft carrying case, CA-05B…………….1 PC |
| Optional Accessories |
|
ELECTRICAL SPECIFICATIONS (23± 5 °C )
| Wet bulb globe temperature ( WBGT ) | |||
|---|---|---|---|
| Range | °C | Indoor Outdoor |
0 °C to 59 °C 0 °C to 56 °C |
| °F | Indoor Outdoor |
32 to 138 °F 32 to 132 °F |
|
| Accuracy -Indoor |
°C | ± 1 °C ( 15 to 59 °C ) ± 1.5 °C ( Others ) |
|
| °F | ± 1.8 °F ( 59 to 138 °F ) ± 2.7 °F ( Others ) |
||
| Accuracy -Outdoor |
°C | ± 1.5 °C ( 15 to 56 °C ) ± 2 °C ( Others ) |
|
| °F | ± 2.7 °F ( 59 to 132 °F ) ± 3.6 °F ( Others ) |
||
WBGT Formula :
| Indoor ( Outdoor and no sun |
WBGT= 0.7WB + 0.3TG |
| Outdoor ( Outdoor and full sun ) |
WBGT= 0.7WB + 0.2TG + 0.1TA |
| Air temperature ( TA ) | ||
|---|---|---|
| Range | °C | 0 to 50 °C |
| °F | 32 to 122 °F . | |
| Resolution | °C | 0.1 °C |
| °F | 0.1 °F | |
| Accuracy @ 15 to 40 °C |
°C | ± 0.8 °C |
| °F | ± 1.5 °F |
| Black globe temperature ( TG ) | ||
|---|---|---|
| Range | °C | 0 to 80 °C |
| °F | 32 to 176 °F . | |
| Resolution | °C | 0.1 °C |
| °F | 0.1 °F | |
| Accuracy @ 15 to 40 °C |
°C | ± 0.6 °C |
| °F | ± 1.1 °F |
| Air temperature ( TA ) | ||
|---|---|---|
| Range | °C | 0 to 50 °C |
| °F | 32 to 122 °F . | |
| Resolution | °C | 0.1 °C |
| °F | 0.1 °F | |
| Accuracy @ 15 to 40 °C |
°C | ± 0.8 °C |
| °F | ± 1.5 °F |
| Humidity | |
|---|---|
| Range | 5 % to 95 % R.H. |
| Resolution | 0.1 % R.H. |
| Accuracy | ≧ 70% RH : ± (3% reading + 1% RH). < 70% RH : ± 3% RH. |
| Air temperature ( TA ) | ||
|---|---|---|
| Range | °C | 0 to 50 °C |
| °F | 32 to 122 °F . | |
| Resolution | °C | 0.1 °C |
| °F | 0.1 °F | |
| Accuracy @ 15 to 40 °C |
°C | ± 0.8 °C |
| °F | ± 1.5 °F |
| Dew Point Temp. | ||
|---|---|---|
| °C | Range | -25.3 °C to 48.9 °C |
| Resolution | 0.1 °C | |
| °F | Range | -13.5 °F to 120.1 °F . |
| Resolution | 0.1 °F . | |
Remark :
|
||
| Wet bulb Temp. | ||
|---|---|---|
| °C | Range | -21.6 °C to 50.0 °C |
| Resolution | 0.1 °C | |
| °F | Range | -6.9 °F to 122.0 °F . |
| Resolution | 0.1 °F . | |
Remark :
|
||
| Recommendations to heat exposure level for working and physical activity.( Permissible heat exposure threshold limit ) | |||
|---|---|---|---|
| Work/rest regimen( Each hour ) | Light | Moderate | Heavy |
| Continuous work | 30 °C( 86 °F ) | 26.7 °C( 80 °F ) | 25 °C( 77 °F ) |
| 75% work, 25% rest | 30.6 °C( 87 °F ) | 28 °C( 82 °F ) | 25.9 °C( 78 °F ) |
| 50% work, 50% rest | 31.4 °C( 89 °F ) | 29.4 °C( 85 °F ) | 27.9 °C( 82 °F ) |
| 25% work, 75% rest | 32.2 °C( 90 °F ) | 31.1 °C( 88 °F ) | 30 °C( 86 °F ) |
| Source : AGGIH 1992 ( The American Conference of Governmental Industrial Hygienists ) |
|||
| WBGT INDEX and PHYSICAL EXERCISE) | ||
|---|---|---|
| WBGT | Flag | Activity Intensity |
| < 26.7 °C( < 80 °F ) | White | Normal activity. Caution should be taken. |
| 26.7 to 29.4 °C( 80 to 84.9 °F ) | Green | Descretion is required in planning intense physical activity. |
| 29.5 to 31 °C ( 85 to 87.9 °F ) |
Yellow | Intense activity for new and unacclimatized persons should be curtailed. |
| 31.1 to 32.2 °C( 88 to 89.9 °F ) | Red | Intense exercise must be curtailed for those with less than 12 weeks training in hot weather. Be on high alert |
| ≧ 32.2 °C( ≧ 90 °F ) | Black | Cancel all outdoor exercise. |
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