137 Vigilant Aircraft Hygrometer
Rugged, shock mounted military qualified instrument used for the primary measurement of dew point in flight or in installations with existing flow.
The Edgetech Instruments Model 137 Vigilant Aircraft Hygrometer is a rugged, shock mounted military qualified instrument used for the primary measurement of dew point in flight or in installations with existing flow, such as wind tunnels.
It features a miniature remote dew point sensor employing a platinum resistance thermometer, and has 15 feet of interconnecting cable to the control unit. Precision calibration units for the linear analog outputs are included.
The specially designed dew point sensor is mounted through the skin of the aircraft and is mounted to either the left or right side of the aircraft.
The dew point is detected by using chill mirror technology assuring precision accuracy, repeatability and reliability.
• Measure dew points in flight
• Rugged shock-mounted, military qualified
• Configuration for left or right hand mounting is available
• 110VAC power
• Chilled mirror sensor selection required
| Dew/Frost Point Range: | -40° to +60°C (-40° to +140°F) A1 Sensor -50° to +90°C (-58° to +200°F) A3 Sensor |
| Dew/Frost Point Accuracy: | ±0.20°C (±0.36°F) nominal |
| Dew/Frost Point Sensor: | 3-wire Platinum Resistance Thermometer (PRT), 100 ohms at 0°C, nominal |
| Depression: | 45°C (81°F), nominal, A1 Sensor 65°C (117°F), nominal, A3 Sensor |
| Sensor Materials: | Chromium, glass, epoxy, anodized aluminum |
| 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: | 0.25-2.5 liters/minute (0.5-5.0 SCFH) |
| Operating Temperature: | Control Unit: 0° to +50°C (+32° to +122°F) A1 Sensor: -40° to +60°C (-40° to 110°F) A3 Sensor: -50° to +100°C (-58° to 212°F) |
| Display: | LCD graphics backlit display 0.25-in. high digits |
| Voltage Output: | 0 to 5 VDC, scalable from -75° to +100ºC (-103° to +212ºF) 1 K ohms minimum load resistance |
| Current Output: | 4 to 20 mA, scalable from -75° to +100ºC (-103° to +212ºF) 1000 ohms maximum loop resistance |
| Serial Digital Communication: | RS-232C compatible 9-pin D sub-miniature connector (female) Baud Rates: 1200/2400/4800/9600/19200 Protocol: N81 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 |
| Physical: | Shipping weight: 11 pounds (5 kg) with sensor Dimensions: Less shock mount base (LxWxH): 13 x 7.6 x 4.9 inches (33 x 19.2 x 12.4 cm) With shock mount base (LxWxH): 13.1 x 7.6 x 5.8 inches (33 x 19 x 14.6 cm) |
| Power Requirements: | 90 to 240 VAC, 50-60 Hz 75 watts maximum |
| Fuses: | 90 - 150 VAC Operation: 1A, 3 AG, 250 VAC, Slo-Blo 160 - 240 VAC Operation: 1A, 3 AG, 250 VAC, Slo-Blo |
| Keypad: | Five soft keys for setup and operation: Displayed parameter selection: °C/°F toggle: View/change time, date: digital averaging: baud rate: Manual Auto Balance Cycle initiate: Program Auto Balance Cycle for start time, interval, output Track/Hold: Maximum Heat toggle: Maximum Cool toggle: View/change high and low limits for analog outputs: View/change Alarm parameters, high/low limits, high or low alarms, latched or unlatched relays, Reset front panel Alarm indicators (latched only). |
• Atmospheric Sciences
$1,037.00 CAD
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