Co2meter AZ 77535 Скачать руководство пользователя страница 13

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LEVELS AND GUIDELINES

EPA Taiwan:

600ppm and 1000ppm

Type 1

indoor areas such as department

stores, theaters, restaurants, libraries,
the acceptable CO

concentration of 8

hours avarge is 1000ppm.

Type 2

indoor areas with special requirements

of good air quality such as schools,
hospitals, day care centers, the
suggested CO

level is 600ppm.

NIOSH recommendations
250-350 ppm

: normal outdoor ambient

concentrations

600 ppm

: minimal air quality complaints

600-1000 ppm

: less clearly interpreted

1000 ppm

: indicates inadequate ventilation;

complaints such as headaches,
fatigue, and eye/throat irritation
will be more widespread. 1000
ppm should be used as an upper
limit for indoor levels.

Non-Enforced Reference levels

Regulatory exposure limit

ASHRAE Standard 62-1989

: 1000ppm

concentration in occupied building should

not exceed 1000ppm.

Building bulletin 101 (BB101)

UK standards for schools say that CO

1500ppm

averaged over the whole day(i.e. 9am to 3.30
pm) should not exceed 1500ppm.

OSHA

: 5000ppm

Time weighted average over five 8-hour work
days should not exceed 5000ppm.

Germany, Japan, Australia, UK...:

5000ppm

8 hours weighted average in occupational
exposure limit is 5000ppm.

Содержание AZ 77535

Страница 1: ......

Страница 2: ...lb temp and humidity DP WB RH are for models 7755 77535 and is an ideal instrument for indoor air quality IAQ diagnosis Poor indoor air quality is considered unhealthy because it causes tiredness loss of ability to concentrate and even illness ex Sick Building Syndrome IAQ monitoring and survey especially on CO2 level and air ventilation become widely applied in public areas such as offices classr...

Страница 3: ...ment on the rear and make sure they are in correct polarity and good contact nd Lob will appear on the LCD And beeper sounds atter When an adaptor is used it will cut off the power supply from batteries The adaptor can t be used as a battery charger When battery voltage gets low a Fig 1 The CO sensor 2 can t work under low voltage so it beeps to indicate failed CO measurement 2 press any key but t...

Страница 4: ...HOLD ftm m s CO2 CO2 concentration in ppm Relative humidity in Air temp Dew point Wet bulb temp in o C or F o Symbols Turns on and off the meter Enters setup mode Sets as non sleep mode with SET CAL Esc DP WBT N X M AV Exits setup page mode Enters CO calibration with 2 Enters RH calibration with Freezes the current readings Cancels data hold function Activates or cancels the backlight Selects unit...

Страница 5: ... CO2 Fig 4 Fig 5 TAKING MEASUREMENT O O CO2 Press to switch temperatures display The lower left display will cycle from air temperature dew point temp Fig 4 and wet bulb temp Fig 5 The meter starts measurement when power on and update readings every second In the condition of operating environment change ex from high to low temp it takes 30 sec to respond for CO sensor and 30 minutes for RH 2 NOTE...

Страница 6: ...inimum maximum and weighted average readings Each press of it displays MIN MAX STEL TWA in sequence and returns to normal mode In MIN and MAX modes it shows the minimum and maximum readings of CO on main display and of AIRor Dpor 2 WB temperatures and humidity on the lower displays Fig 7 7755 77535 N X M AV O O CO2 Fig 7 In STEL and TWA modes the main display shows the STEL and 8 hours TWA weighte...

Страница 7: ...2 Fig 9 The meter turns off automatically after 20 minutes of inactivity To override the function hold down and for 2 seconds to turn on the meter until n appears NOTE Auto sleep function will be disabled during calibration mode 6 SET AUTO POWER OFF ALARM The meter features audible alarm to give warnings when CO concentration 2 exceeds the limit See P1 0 in setup for setting alarm threshold It emi...

Страница 8: ...s tunes and the alarm range is from 100 to 9900ppm When the preferred alarm value is set press to save the setting or without saving and return to P1 0 P3 0 TEMPERATURE SCALE Press or in P1 0 to access P3 0 for setting up temperature scale Fig 12 Press and it goes into P3 1 with o o blinking C or F current set Fig 13 on the lower left display To switch press to save the setting or without saving a...

Страница 9: ...y weather Place the meter in the calibration site Turn on the meter and hold down and simultaneously to enter CO2 calibration mode Fig 14 400ppm and CAL are blinking on the LCD while performing calibration Wait about 5 minutes until the blinking stops and the calibration is completed automatically and back to normal mode To abort the calibration turn off the meter at any time The meter is calibrat...

Страница 10: ... humidity with 33 and 75 salt solution The ambient condition is recommended o to be at 25 C and stable humidity better to be close to the calibrating value To abort calibration just turn off the meter 7755 77535 RH CALIBRATION CAL Esc DP WBT O O Fig 15 O O Fig 16 O O Fig 17 75 calibration After 33 calibration plug the sensor probe into 75 salt bottle then press to enter 75 calibration Fig 17 N X M...

Страница 11: ...E01 CO sensor damaged 2 E02 The value is under range E03 The value is over range E04 The original data error results in this error DP WB E07 Too low voltage to measure CO 2 Replace batteries or use an adaptor E11 Retry humidity calibration E17 Retry CO calibration 2 E31 Temperature sensor damaged E34 Humidity sensor damaged Can t power on Press for more than 0 3 seconds and try again Check whether...

Страница 12: ...N Resolution Accuracy Pressure Dependence Range Resolution Accuracy Range 0 0 99 9 Resolution 0 1 3 10 90 5 others Warm up Operating Storage Power Battery life 10 0 60 0 14 140 0 1 0 1 1 6 reading per kPa deviation from normal pressure 100kPa CO2 Humidity Range 1 ppm 0 2000ppm 2001 9999 out of scale 75ppm 5 rdg 0 2000 Not specified for out of scale 24 hours Alkaline Temp Accuracy 30 seconds 0 50 0...

Страница 13: ...eted 1000 ppm indicates inadequate ventilation complaints such as headaches fatigue and eye throat irritation will be more widespread 1000 ppm should be used as an upper limit for indoor levels Non Enforced Reference levels Regulatory exposure limit ASHRAE Standard 62 1989 1000ppm CO2 concentration in occupied building should not exceed 1000ppm Building bulletin 101 BB101 UK standards for schools ...

Страница 14: ...om leaking batteries Proof of purchase is required for warranty repairs Warranty is void if the meter has been opened RETURN AUTHORIZATION OTHER RELATED PRODUCTS Authorization must be obtained from the supplier before returning items for any reason When requiring a RA Return Authorization please include data regarding the defective reason the meters are to be returned along with good packing to pr...

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