CEA Instruments Inc.
The expanded GD-444 series of infrared carbon-dioxide analyzers can now measure and display temperature and relative humidity levels. Other gas sensors, such as carbon mon-oxide or oxygen, also can be added. Carbon dioxide full ranges up to 1, 10, and 100% are available with autoranging or single range resolution. Weighing less than a pound, the monitors include an internal sample pump, backlight, adjustable alarms, digital display, outputs and numerous push-button
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