REED R9900 Instruction Manual Download Page 8

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Pantone 534 Blue

Pantone 123 Yellow

Pantone 485 Red

Pantone 123 Yellow

Pantone 534 Blue

Black

Rich Black - 

20/20/20/100

Blue -  100/80/30/5

Yellow - 0/27/100/0

Red - 10/100/100/5

Yellow - 0/27/100/0

Blue -  100/80/30/5

Only if you REALLY need them:

Pantone 534 Blue -  100/80/30/5

Pantone 485 Red - 10/100/100/5

Pantone 123 Yellow - 0/27/100/

INSTRUMENTS

RH Calibration

The humidity sensor can be manually calibrated with the optional 33% 
and 75% salt solutions. It is recommended that the ambient condition to 
be at 25°C and at an stable humidity for the highest accuracy. To abort 
the calibration at any time, turn the meter off. Do not calibrate the humid

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ity without the specified calibration salt otherwise it will cause permanent 
damage. Contact REED Instruments at info@reedinstruments for calibra

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tion salt or for service.

Turn the meter on and plug the sensor probe into the 33% salt bottle. 
Hold down the “CAL” and “DP/WBT” button to initiate RH Calibration. 
“CAL” and the calibrating value of 33% (32.7% if at 25°C) will blink on 
the LCD along with the current temperature at the left. The meter is now 
calibrating and will finish when “CAL” and humidity stop blinking, which is 

about 60 minutes. 

After the 33% calibration is complete, plug the sensor probe into the 75% 
salt bottle. Press the “ENTER” button to initiate 75% calibration. “CAL” 
and the calibrating value of 75% (75.2% if at 25°C) will blink on the LCD 
along with the current temperature at the left. The meter is now calibrating 
and will finish when “CAL” and humidity stop blinking, which is about 60 

minutes.

To calibrate 33% only, press the “ESC” button when calibration is com

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plete. To calibrate 75% only, press the “UP” or “DOWN” button after you 
press the “CAL” and “DP/WBT” buttons.

Software

This meter can link to a PC for logging and data analysis via the optional 
RS232 interface and software. The protocol is as follows: 
A. 9600 bps, 8 data bits, no parity.
B. Cxxxxppm:Txxx.xC(F):Hxx.x%:dxxx.xC(F):wxxx.xC(F) LRC CRLF 
  Description: $CO2:Air:RH:DP:WBT LRC CRLF 

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[email protected]

1.800.561.8187

Summary of Contents for R9900

Page 1: ...reedinstruments www com Model Instruction Manual Indoor Air Quality Meter R9900 Rich Black 20 20 20 100 Only if you REALLY need them www com information itm com 1 800 561 8187...

Page 2: ...w 0 27 100 0 Blue 100 80 30 5 Only if you REALLY need them Table of Contents Features 3 Specifications 3 4 Instrument Description 4 5 Operating Instructions 5 8 Data Hold 5 Backlight 5 Max Min Weighte...

Page 3: ...minute period and TWA readings Time Weighted Average over a period of 8 hours Hold function freezes displayed reading Maximum minimum and average functions Low drift non dispersive infrared CO2 senso...

Page 4: ...ne batteries Battery Life 24 hours Includes 4 AA batteries and a hard carrying case Optional accessories 33 Calibration Salt RHA 33 75 calibration salt RHA 75 Instrument Description Power Set button C...

Page 5: ...powering on the meter will beep and commence a 30 second warm up The meter will then enter the normal measuring mode displaying the current CO2 temperature and humidity readings Readings will be updat...

Page 6: ...l continue to measure normally NOTE If the meter is turned on for less than 15 minutes the STEL value will be the weighted average of readings taken since power on This is the same for TWA values befo...

Page 7: ...utton and modify the tempera ture unit by pressing the UP or DOWN buttons Press the ENTER button to save the setting or press the ESC button to cancel CO2 Calibration This meter is calibrated at a sta...

Page 8: ...the calibrating value of 33 32 7 if at 25 C will blink on the LCD along with the current temperature at the left The meter is now calibrating and will finish when CAL and humidity stop blinking which...

Page 9: ...ssary Fixed readings Check if the data hold function is activated Slow response Check to see if the airflow channels on the rear are blocked Error messages E01 CO2 sensor damaged E02 The value is unde...

Page 10: ...n the battery compartment on the rear and make sure they are correct polarity and in good contact Notes __________________________________________ ________________________________________________ ____...

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