Spectrum 3445 Product Manual

Temp / RH / CO2

Wall-Mount Meter

PRODUCT MANUAL

Item # 3445

CONTENTS

Specifications 2
Description 3
Operation 4
Troubleshooting 7
Warranty 8
CE Declaration of Conformity 8

Thank you for purchasing the Temp/RH/CO2 Wall-Mount Meter.
With an NDIR (non-dispersive infrared) CO
stable for long-term monitoring. Please read this manual
thoroughly before using your meter.

sensor, this unit is

2

Specifications

CO2 Range 0—2000 ppm
CO2 Accuracy ±50ppm ±5% of reading

Pressure Dependence +0.16% of reading per 1 hPa deviation

from normal pressure of 1000 hPa

Temperature Range 14 to 140°F (-10 to 60°C)
Temperature Accuracy ±0.9°F (±0.6°C)

Humidity Range 0.0 to 99.9% RH
Humidity Accuracy ±3% RH (10 to 90% RH, else ±5% RH)
Warm up 30 seconds
Power Supply 100-240VAC adapter to 12VDC

2

Description

LCD Display

Symbols:
MAX/MIN Maximum/Minimum readings
TWA Time weighted average (8 hours)
STEL Short-term exposure limit (15 minutes
weighted average)
DP Dew point temperature
AIR Air temperature
WBT Wet bulb temperature

Keypad

SET Enter Setup mode
Save and finish settings.
CAL/ESC With Up/DP/WB, enter CO
With M
Exit Setup mode
RESET Reset meter and clear Max/Min values
Terminate calibration process
Up/DP/WB Select AIR/DP/WBT temperature display
Select mode or increase value in setup or
calibration

X

M

N

Select mode or decrease value in setup or
calibration

calibration

X

/AVG/Down, enter RH calibration

N

2

/AVG/Down Activate MAX/MIN/STEL/TWA display

3