MRC WBGT-2009 Operation Manual

MRC WBGT-2009 Operation Manual

Heat index wbgt meter

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HEAT INDEX WBGT METER
Model : WBGT-2009
Your purchase of this
HEAT INDEX WBGT
METER marks a step
forward for you into the
field of precision
measurement. Although
this meter is a complex
and delicate instrument,
its durable structure will
allow many years of use
if proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
3, Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529
mrc@mrclab.com
MRC. 7.24

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Summary of Contents for MRC WBGT-2009

  • Page 1 HEAT INDEX WBGT METER Model : WBGT-2009 Your purchase of this HEAT INDEX WBGT METER marks a step forward for you into the field of precision measurement. Although this meter is a complex and delicate instrument, its durable structure will...
  • Page 2 TABLE OF CONTENTS 1. FEATURES............................. 2. SPECIFICATIONS.......................... 3. FRONT PANEL DESCRIPTION..................... 3-1 Display............................. 3-2 Power Button ( ESC, Backlight Button ).................. 3-3 Hold Button ( Function, Next Button )..................3-4 REC Button ( Enter Button, in/Outdoor Button )..............3-5 SET Button ( ▼ Button )................3-6 ▲...
  • Page 3 1. 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...
  • Page 4: Specifications

    2. SPECIFICATIONS 2-1 General Specifications Circuit Custom one-chip of microprocessor LSI circuit. Display LCD 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...
  • Page 5 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 0 to 50 ℃. Temperature Operating Less than 85% R.H. Humidity Power Supply * AC/DC power adapter is optional.
  • Page 6 2-2 Electrical Specifications (23±5 ℃ Wet bulb globe temperature ( WBGT ) Range Indoor 0 ℃ to 59 ℃ ℃ Outdoor 0 ℃ to 56 ℃ Indoor 32 to 138 ℉ ℉ Outdoor 32 to 132 ℉ Accuracy ±1 ℃ ( 15 to 59 ℃ ) ℃...
  • Page 7 Black globe temperature ( TG ) Range 0 to 80 ℃ ℃ 32 to 176 ℉. ℉ Resolution 0.1 ℃ ℃ 0.1 ℉ ℉ Accuracy ±0.6 ℃ ℃ ±1.1 ℉ @ 15 to 40 ℃ ℉ Humidity Range 5 % to 95 % R.H. Resolution 0.1 % R.H.
  • Page 8: Front Panel Description

    3. FRONT PANEL DESCRIPTION Fig. 1 3-1 Display 3-2 Power Button ( ESC, Backlight Button ) 3-3 Hold Button ( Function, Next Button ) 3-4 REC Button ( Enter Button, in/Outdoor Button ) 3-5 SET Button ( ▼ Button ) 3-6 ▲...
  • Page 9: Measuring Procedure

    4. MEASURING PROCEDURE 4-1 Function selection 1) Turn on the meter by pressing the " Power Button " ( 3-2, Fig. 1 ) momentarily. Pressing the " Power Button " ( 3-2, Fig. 1 ) continuously and > 2 seconds again will turn off the meter.
  • Page 10 The meter Temp. display unit is defaulted to " ℃ " If intend to let the meter's temperature unit default to " ℉ " , then please refer chapter 5-4, page 12 ). Wet bulb globe Temp. ( WBGT ) measurement 1) Power on the meter by pressing the "...
  • Page 11 Dew point Temp. measurement 1) Power on the meter by pressing the " Power Button " ( 3-2, Fig. 1 ). 2) Function select to " Dew point Temp. " measurement. * The upper Display will show the Dew point Temp. value. The lower Display will show the text "...
  • Page 12 4-3 Data Record ( Max., Min. reading ) 1) The data record function records the maximum and minimum readings. Press the " REC Button " ( 3-4, Fig. 1 ) once to start the Data Record function and there will be a " REC " symbol on the display. 2) With the "...
  • Page 13: Advanced Setting

    5. ADVANCED SETTING Under do not execute the Datalogger function, press the " SET Button " ( 3-5, Fig. 1 ) continuously at least two seconds will enter the " Advanced Setting " mode. then press the " Next Button " (3-3, Fig. 1 ) once a while in sequence to select the eight main function, the lower display will show : AL...
  • Page 14 5-2 Auto power OFF management When the lower display show " PoFF " 1) Use the " ▲ Button " ( 3-6, Fig. 1 ) or " ▼ Button " ( 3-5, Fig. 1 ) to select the upper value to " yES " or "...
  • Page 15: Power Supply From Dc Adapter

    C - Temperature unit is ℃ F - Temperature unit is ℉ 2) After Display unit is selected to " C " or " F ", press the " Enter Button " ( 3-4, Fig. 1 ) will save the setting function with default.
  • Page 16: System Reset

    8. SYSTEM RESET If the meter happen the troubles such as : CPU system is hold ( for example, the key button can not be operated... ). Then make the system RESET will fix the problem. The system RESET procedures will be either following method : During the power on, use a pin to press the "...
  • Page 17 Meter (9W 'D" Connector) Center Pin..........Pin 4 (3.5 mm jack plug) Ground/shield........... Pin 2 2.2 K resistor Pin 5 The 16 digits data stream will be displayed in the following format : D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Each digit indicates the following status : Start Word When send the WBGT display data = 1...
  • Page 18 RS232 FORMAT : 9600, N, 8, 1 Baud rate 9600 Parity No parity Data bit no. 8 Data bits Stop bit 1 Stop bit 10. APPENDIX Recommendations to heat exposure level for working and physical activity. ( Permissible heat exposure threshold limit ) Work/rest regimen Light Moderate...
  • Page 19 WBGT INDEX and PHYSICAL EXERCISE WBGT Flag Activity Intensity < 26.7 ℃ White Normal activity. ( < 80 ℉ ) Caution should be taken. 26.7 to 29.4 ℃ Green Descretion is required ( 80 to 84.9 ℉ ) in planning intense physical activity.

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