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INSTRUCTION MANUAL 

 

MODEL 8820 

 

Multi-Function Environment Meter

 

 
 
 
 

4 IN 1 

SOUND LEVEL 

LIGHT 

HUMIDITY 

TEMPERATURE 

 
 
 
 
 
 
 

TABLET OF CONTENTS 

 
 

TITLE 

1.

 

INTRODUCTION 

2.

 

FEATURES 

3.

 

SPECIFICATIONS 

4.

 

PANEL DESCRIPTION 

5.

 

OPERATING INSTRUCTION 

6.

 

MAINTENANCE 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for 8820

Page 1: ...AL MODEL 8820 Multi Function Environment Meter 4 IN 1 SOUND LEVEL LIGHT HUMIDITY TEMPERATURE TABLET OF CONTENTS TITLE 1 INTRODUCTION 2 FEATURES 3 SPECIFICATIONS 4 PANEL DESCRIPTION 5 OPERATING INSTRUCTION 6 MAINTENANCE ...

Page 2: ...idity and Temperature 3 1 2 large LCD display with units of Lux RH and C dB A dB indication Easy to use Light measuring levers ranging from 0 01 lux to 20 000 lux Sound level range A LO low Weighting 35 100 dB A HI High Weighting 65 130 dB C LO low Weighting 35 100 dB C HI High Weighting 65 130 dB Resolution 0 1 dB Humidity measurement from 25 RH to 95 RH with 0 1 RH resolution and fast time respo...

Page 3: ...ing x10 Overrate Display Highest digit of 1 is displayed Accuracy 5 rdg 10 dgts calibrated to standard incandescent lamp at color temperature 2856k Repeatability 2 Temperature Characteristic 0 1 Photo detector One silicon photo diode with filter Humidity Temperature Measurement Range Humidity 25 95 RH Temperature 20 0 50 0 4 122 K type 20 0 200 0 20 750 4 0 200 4 1400 Resolution 0 1 RH 0 1 1 0 1 1...

Page 4: ...sound source in a horizontal position 3 Press Select Button Selects A dB C dB Lo dB and Hi dB 4 The A C weighting curve is nearly uniform over the frequency range form 30 to 10 KHz thus giving an indication of overall Sound level 5 The Fast response is suitable to measure shout bursts and peak values form sound source 6 The sound level will be displayed 7 Note Strong wind over 10m sec striking the...

Page 5: ...tion room Operation room Emergency Treatment School Auditorium Indoor Gymnasium Class room Laboratory Library Drafting room 100 200 300 750 750 1 500 100 300 200 750 500 1 500 Measuring Humidity Temperature 1 Humidity Measurement Set the function Switch to RH position Then the display will show the humidity reading value RH directly When the tested environment humidity value changed It need to a f...

Page 6: ...0 1 or 1 range Never attempt a voltage measurement with the test leads inserted into the K type thermocouple socket You might be injured or damage the meter 6 MAINTENANCE Battery Replacement If the sign BAT appears on the LCD display it indicates that the battery should be replaced Open the battery case and replace the exhausted battery with new battery 1 x 9V battery NEDA 1604 6F22 or equivalent ...

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