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The HygroFlex5-EX series is the latest development in two-channel transmit- ters for precise measurement of humidity and temperature in explosive atmo- spheres. The attached probes are cast into a stainless-steel tube and certifi ed for operation in Zone 0/20. The transmitter itself is certifi ed for Zone 1/21. The intelligent design of the circuitry with electrical isolation permits the measur- ing system to be operated without an intrinsically safe feed.
Features
• Measurement of relative humidity and temperature • Optional output of dew point and other psychrometric calculations • Safe operation in potentially explosive environments • Electrically isolated analog outputs • No intrinsically safe feed required • Interchangeable stainless-steel probes • Certifi ed for two temperature classes (T4 / T5)
Power supply • Low-voltage: 2-wire
Signal output • Current output
Versions
• Duct version • Wall version
Measured parameters • Relative humidity and temperature
Measurement ranges
• 0...100 %RH • -40...60 °C / -40...85 °C
Display
• Display with trend indicators and keypad • Without display