EXTECH FM200 Features:

• FM200 is a handheld Formaldehyde Meter with Detachable Probe
• Simultaneously displays Formaldehyde concentration, Air Temperature, and Relative Humidity readings on large LCD with backlight feature
• Audible alarm default at 0.08ppm (adjustable)
• Designed with Electrochemical CH₂O sensor
• Sensor LED indication where green indicates sensor is connected properly and power is on, red LED shows the fan is in working condition (active = flashing red; inactive = solid red)
• Built-in bumper that allows the fan inside the sensor to draw in gas quickly
• CH₂O Calibration function in fresh air
• Min/Max and Data Hold
• Auto power off with disable
• Low battery indicator
• Complete with soft tube (approx. 300mm), sensor with 655mm cable, 6 AAA batteries and carrying case

Specifications

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The Extech 42280 is a wall-mount, tripod mount, or desktop indoor air quality monitor with an internal memory capable of storing 16,000 readings (8000 Temperature readings and 8000 Relative Humidity readings) that can later be transferred via USB to a PC using the included Windows

The Extech 42280 features a triple LCD that displays Humidity, Temperature, and date (Year, Month, and Day), this monitor can be programmed from the built-in keypad, or remotely from a PC, with selectable data sampling rates (1 second to 12 hours) and user programmable audible and visual high/low alarms for both Temperature (-20 to 70 degrees C) and Humidity (0 to 100 percent RH).

Connecting the Meter to a PC

A USB cable is provided with the meter. One end of the cable connects to the meter’s USB jack and the other end connects to a USB port on the PC.

Running the supplied PC software

The supplied PC software is included on the supplied CD-ROM. Insert the CD into the computer’s CD-ROM drive and follow the on-screen prompts and instructions. In the software COM PORT SETTING field, select the COM port to where the meter is connected.

Software Datalogging Parameters

From the main software screen, select LOGGER SET and set the sample rate, sample points, and start mode. These are described in some detail in the separate software manual and the software HELP utility on the supplied CD-ROM. Remember to press ‘OK’ after changing a setting to ensure that the software processes the changes. The meter is now ready to record.

Specifications

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• Basic accuracy 3%RH, 1.8°F/1°C
• Simultaneous numerical and graphical display of Humidity and Temperature readings, plus Time and Date
• Measures Humidity (10 to 95%RH) and Temperature (-20.0°F to 140.0°F) plus calculates Dew Point
• LCD indicates percentage of memory remaining
• Large dual graphical LCD displays with adjustable vertical and horizontal TAC resolution
• Internal memory records up to 49,000 data points and can be transferred to a PC via RS-232 serial port for further data analysis

Extech RH520A Applications:

• Store humidity and temperature historical data for report generation
• Record process conditions
• Monitor and record Laboratory or clean Room temperature and humidity history
• Generate warning when conditions are outside required limits
• Monitor controlled environment areas such as freezers, storage areas and other critical areas

Extech RH520A INCLUDED ACCESSORIES:

• Built-in stand
• detachable probe with 3ft (1m) cable
• RS232 cable
• RS-232 To USB Adaptor
• LabView-based PC software
• 100-240VAC 50/60Hz adaptor
• 3 AA batteries

Extech RH520A Remote Probe

The remote (detachable) probe senses the ambient conditions while the LCD display graphs and provides numerical representation of the readings. Programmable audio‐visual alarms alert the user when ambient conditions reach alarm presets. The optional alarm module permits automatic relay switching when alarm presets are reached. The RH520A Internal Memory can store up to 49,152 measurements for later transfer to a PC. Careful use of this instrument will provide years of reliable service.

Specifications

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Easy-to-use Extech CO240 Air Quality Meter measures Carbon Dioxide (CO2), Air Temperature, and Humidity. It also calculates Dew Point and Wet Bulb. User settable high alarm with audible beeper is perfect for conducting a quick check of CO2 level to help adjust the environmental conditions in an enclosed area, such as a greenhouse or nursery, to ensure optimal plant grown. It’s also convenient for testing the air quality in buildings such as factories, hospitals, conference rooms, schools, and anywhere that high levels of carbon dioxide are generated, to ensure proper air ventilation.

Extech CO240 Features

• Dual display of Carbon Dioxide (CO₂) concentrations and Relative Humidity, Temperature, Dew Point, or Wet Bulb
• Maintenance free NDIR (non-dispersive infrared) CO₂ sensor
• Audible CO₂ warning alarm when concentration level exceeds high user set point
• Min/Max CO₂ value recall function
• Includes software and cable for on-line (real-time) datalogging to a PC
• Automatic Baseline Calibration function
• Data Hold, Auto Power Off (with disable), Low battery indicator
• Tripod mount (tripod sold separately)
• Complete with six AAA batteries, USB cable, PC software, and soft case

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