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Buck Research Instruments' 1011C Aircraft Hygrometer is a complete chilled mirror optical dew point system for monitoring atmospheric dew and frost points. It provides three stages of thermoelectric cooling, and can reach frost points as low as -60 to -90 °C, depending on mounting configuration and operating conditions. No auxiliary coolants are required.

Included in the 1011C system are:

• A water excluding inlet probe and a pressure tap for monitoring static pressure
• A cockpit digital display with resolution to 0.1 °C is provided
• An analog and RS-232 outputs for recording
• Complete reworking of the 1011B formerly manufactured by Buck Research Instruments under license from General Eastern Instruments

Applications:

• Research aircraft
• Aircraft engine noise certification
• Weather modification

Specifications:

• 3 Stage TE Cooler
• Dew/Frost Range: -65 to +50 °C *
• 90 °C Depression
• Resolution: 0.01 °C
• Accuracy: ±0.2 °C
• Sample Flow Rate: 0.25 to 3 liters/min
• Sample Pressure: 0 to 15 psia
• 0 to 10v and 4-20 mA Scalable Analog Output
• RS232 Serial I/O
• Dimensions:
• Power unit: 6x6x12 inches, Weight: 3.5 lbs
• Control/Indicator unit: 3.25x3.25x6 inches, Weight 1.25 lbs
• Sensor : 2.5x2.5x4 inches, Weight 1.6 lbs
• Power Requirement: 28vdc @ 3 amps

*Dependent upon ambient temperature.