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REED INSTRUMENTS Indoor Air Quality Meter: Calculates Averages/LCD Display, Carbon Dioxide - Gas Analyzers for Carbon Dioxide
REED INSTRUMENTSGas Analyzers for Carbon Dioxide

REED INSTRUMENTS Indoor Air Quality Meter: Calculates Averages/LCD Display, Carbon Dioxide

The REED INSTRUMENTS R9905 Indoor Air Quality Meter is a gas analyzer for carbon dioxide with a triple LCD display with backlight. It measures temperature and relative humidity, with a PPM accuracy of ±3% of reading…

SKU 3G-OTH-171211

Also listed as: R 9905 · R-9905

Brand
REED INSTRUMENTS
Item
Indoor Air Quality Meter: Calculates Averages/LCD Display, Carbon Dioxide
Category
Gas Analyzers for Carbon Dioxide
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

REED INSTRUMENTS
Manufacturer Part Number
R9905
Type
Carbon Dioxide, Sound
Features
Triple LCD Display
Includes
Carrying Case
Alert Type
Sound
PPM Accuracy
±3% of Reading or ±75ppm (0 to 5,000ppm)
Power Source
Battery
Features Broad
LCD Display
Testing Functions
Temperature
Gases Detected - NEW
Carbon Dioxide
Temperature Accuracy
+/-1.5°
Relative Humidity Accuracy
±3% from 10 to 90% RH
Digital Display Screen Type
LCD with Backlight
Calibration Certificate Type
Available Separately

Technical Documents

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REED INSTRUMENTS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The REED INSTRUMENTS R9905 Indoor Air Quality Meter is a gas analyzer for carbon dioxide with a triple LCD display with backlight. It measures temperature and relative humidity, with a PPM accuracy of ±3% of reading or ±75ppm (0 to 5,000ppm) and temperature accuracy of +/-1.5°. The meter is battery-powered, includes a carrying case, and features a sound alert type.

Frequently Asked Questions

What is the REED INSTRUMENTS R9905 Indoor Air Quality Meter used for?

The REED INSTRUMENTS R9905 measures carbon dioxide levels, temperature, and relative humidity in indoor environments. It is commonly used by HVAC technicians, facility managers, and safety inspectors to monitor air quality in offices, schools, and industrial spaces. The triple LCD display shows readings simultaneously, and the sound alert notifies users when CO₂ exceeds set thresholds.

What are the specifications of the REED INSTRUMENTS R9905?

The R9905 detects carbon dioxide with a PPM accuracy of ±3% of reading or ±75ppm from 0 to 5,000ppm. Temperature accuracy is +/-1.5°, and relative humidity accuracy is ±3% from 10 to 90% RH. It features a triple LCD display with backlight, runs on battery power, includes a carrying case, and offers a sound alert type. Calibration certificates are available separately.

Where to buy the REED INSTRUMENTS R9905 worldwide?

3G Electric supplies the REED INSTRUMENTS R9905 Indoor Air Quality Meter to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact our team to place an order or request a quote for this gas analyzer.

How to calibrate the REED INSTRUMENTS R9905?

The REED INSTRUMENTS R9905 requires periodic calibration to maintain accuracy. A calibration certificate is available separately from the manufacturer. For best results, send the meter to a certified calibration lab or follow the procedures in the user manual. Regular calibration ensures reliable CO₂, temperature, and humidity readings in indoor air quality monitoring.

Used in

Common applications for REED INSTRUMENTS
Building inspection — REED R6015 pin moisture meter for detecting wood moisture content in flooring and framing
Electrical maintenance — REED R2165-NIST thermal imager for identifying overheating components in switchgear and panels
HVAC diagnostics — REED R2320 infrared thermometer for non-contact temperature measurement of ducts and compressors
Laboratory testing — REED R3525-ELECTRODE pH electrode for water quality analysis in treatment plants
Metal thickness gauging — REED R7920-PROBE replacement probe for ultrasonic thickness measurement of pipes and tanks
Environmental monitoring — REED R6000 humidity/temperature indicator for logging conditions in storage facilities

REED INSTRUMENTS Products

3G Electric supplies REED INSTRUMENTS gas analyzers for carbon dioxide. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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