Edgetech Instruments Vigilant Aircraft Hygrometer (-40°C ~ +60°C; -50°C ~ +90°C)

Dew/Frost Point Range:

S2 Sensor Two Stage: -40°C to +60°C (-40°F to +140°F)

A3 Sensor Three Stage: -50°C to +90°C (-58°F to +194°F)

Dew/Frost Point Accuracy: ±0.20°C (±0.36°F) nominal

Dew/Frost Point Sensor: Chilled mirror with 3-wire Platinum Resistance Thermometer (PRT), 100 ohms at 0°C nominal

Depression:

S2 Sensor: 65°C (117°F) nominal

A3 Sensor: 65°C (117°F) nominal

Slew Rate: 1.5°C (2.7°F)/second max, above 0°C

Repeatability: ±0.05°C (0.09°F)

Hysteresis: Negligible

Precision Resolution: 0.1 degrees C or F

Sample Flow Rate: 0.25 to 2.5 liters/minute (0.5 to 5.0 SCFH)

Operating Temperature:

Control Unit: 0°C to +50°C (+32°F to +122°F)

S2 Sensor: -40°C to +60°C (-40°F to +140°F)

A3 Sensor: -50°C to +100°C (-58°F to +212°F)

Display: LCD graphics backlit display, 0.25-inch digits

Analog Output:

Voltage: 0 to 5 Vdc, scalable from -75ºC to +100ºC (-103°F to +212ºF), 1 K ohms minimum load resistance

Current: 4 to 20 mA, scalable from -75ºC to +100ºC (-103ºF to +212ºF), 1000 ohms max loop resistance

Serial Digital Communication:

Interface: RS-232C compatible, 9-pin D sub-miniature connector (female)

Baud Rates: 1200/2400/4800/9600/19200

Protocol: N81

Functions: Output of time, date, and dew/frost point at timed intervals; programming of most keypad functions

Auto Balance Control:

Manual initiation of ABC at any time

Automatic ABC with start time and interval programmable from keypad or RS-232 port

Outputs programmable for Track or Hold during ABC

Dimensions:

Less shock mount base (L x W x H): 13 x 7.6 x 4.9 in. (33 x 19.3 x 12.4 cm)

With shock mount base (L x W x H): 13.1 x 7.6 x 5.8 in. (33.2 x 19.3 x 14.7 cm)

Mounting Configurations:

AS/L: Aircraft sampling module, left side to pilot perspective

AS/R: Aircraft sampling module, right side to pilot perspective

Power Requirements: 90 to 240 Vac, 50-60 Hz, 75 W maximum

Fuses:

90 to 150 Vac Operation: 1 A, 3 AG, 250 Vac, Slo-Blo

160 to 240 Vac Operation: 1 A, 3 AG, 250 Vac, Slo-Blo

Options: Additional sensor cable over 15 feet, S2 sensor mounted to control unit

Datasheet

Applications

Aeronautics

Atmospheric Sciences

Government Agencies

R&D Test & Measurement

Scientific Study

Wind Tunnels