REED Instruments R9450, R9450-NIST User manual

Model

R9450

Carbon Monoxide Meter

Safety

For safety reasons, we recommend that this unit be certified
every year.

Do not use the meter as a personal safety monitor. Learn and
recognize the effects of CO poisoning:

Specifications

Measuring Range 0 to 999 ppm
Accuracy ±5% of reading or ±10 ppm
Resolution 1 ppm
Sensor Type Stabilized electrochemical sensor
Measuring Range 32 to 122°F (0 to 50°C)
Accuracy ±1.2°F (0.6°C)
Resolution 0.1°F (0.1°C)
Measuring Range 10-90% RH
Accuracy ±3% RH (at 25°C, otherwise ±5%)
Resolution 0.1% RH
Display LCD
F/C Switchable Yes
Alarm Audible (buzzer), Visible (LED)
Adjustable CO Alarm Limit Yes
Max Hold Yes
Date & Time Yes
Warm-up Time 60 seconds
Desktop Stand Yes
Wall Mountable Yes
Power Supply 4 “AAA” batteries, AC Adaptor (optional)
Product Certications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature -4 to 122°F (-20 to 50°C)
Operating Humidity Range 0-90% (non-condensation)
Dimensions 4.4 x 4.3 x 1.1” (113 x 108 x 28mm)
Weight 5.6 oz (159g)

Operating Instructions

Taking Measurements

This meter starts taking measurements when powered on and updates readings
every 2 seconds. When turning on the meter, the CO sensor needs 1 minute
warm up. The CO alarm default is 30 ppm and may be adjusted by the user.

0 to 1 ppm Normal background levels

9 ppm ASHRAE Standard 62-1989 for
living areas

Maximum Function

Press MODE button, LCD displays MAX CO, Temperature and
Humidity reading. To reset the max, hold MAX button while in MAX mode and
the display will show Clr, confirming memory has been cleared.

35 ppm The average exposure level
per U.S. OSHA
workplace standards

50 ppm OSHA enclosed space
8-hour average level*

100 ppm OSHA exposure limit*

200 ppm Mild headache, fatigue, nausea and dizziness

400 ppm Headache occurs in 2.5 to 3.5 hours

800 ppm Dizziness, nausea and convulsions
Death within 2 to 3 hours

* U.S. Department of Labor, Occupational Safety & Health Adminis­tration (OSHA) Regulation 1917.24: The CO content in any enclosed
space shall be maintained at not more than 50 ppm (0.005%).
Remove employees from enclosed space if the CO concentration
exceeds 100 ppm (0.01%).

Features

• Measures carbon monoxide (CO), air temperature and

Setting the Date & Time

The meter displays current date and time alternately, each cycle lasts 6 seconds.
To enter the date/time setting press MODE and POWER at the same time. Press
SEL/R to increase the digit and TRH/M to decrease the
digit. To edit the Year, Month/Date and Hour/Minute press MODE. Press UNIT
to select the Month or Date, Hour or Minute. Once complete, press MODE and
POWER to save and exit. Please note time is reset when meter is powered off.

Toggle Temperature

Press the UNIT button to toggle unit of measure.

Power ON/OFF

Press the POWER button and the LCD will show current CO reading,
Temperature, Humidity, Date and Time.

Alarm Setting

In normal measurement mode, press the POWER button to toggle alarm ON
or OFF. While alarm is on, the red LED will flash if the data is exceeding the set
alarm limit. Press SEL/R and POWER to set CO alarm
threshold. Press UNIT to change digit. Press SEL/R to increase the digit and
TRH/M to decrease the digit. Once complete, press SEL/R and POWER to
save and exit.

relative humidity

• User adjustable alarm limit

• Built-in clock and calendar

• Max hold function

• Can be mounted on a wall or placed on desktop

• Manual CO calibration to zero

• Low battery indicator

• Includes batteries

Manual Calibration to Zero

Before starting make sure the area is well ventilated and there
is no CO in the environment.
When unit is turned on, hold UNIT for 6 seconds. The CO will
display “0000” and flash for 60 seconds.

Error Codes
Er 1 Sensor Failed
Er 2 Out of measured range

Display Description

1) Carbon Monoxide (CO)

2) CO alarm indicator

3) Relative Humidity Temperature

4) Air Temperature

Find Quality Products Online at: [e-mail]

5) Year / Month / Day / Time (Rotates)

www.GlobalTestSupply.com

For service on this or any other REED product or information on other REED
products, contact REED Instruments at [e-mail].