DewTrak II MO for Motor Octane Testing
Designed to continuously measure the moisture content & barometric pressure in the motor octane testing process
The Edgetech Instruments Model DewTrakII MO dew point/humidity transmitter is an optical chilled mirror hygrometer designed to continuously measure the moisture content and Barometric pressure in the motor octane testing process. It is used to monitor and ensure compliance with test standards ASTM D2700, D2699, D2885. It guarantees measurement compliance for allowable Humidity range between 25–50 gr/lb & Pressure 21–30 in Hg (0.1 in Hg).
The DewTrak MO powered by 24Vdc and can be easily fitted to existing Knock engine systems. It is specifically designed to measure conditions required for Motor Octane (MON),& Research Octane (RON) It uses the chilled mirror dew point temperature condensation principle to determine the water vapor concentration and barometric pressure measurement of the motor intake air fuel mix.
Outputs include 4 to 20mA, 0 to 5 Vdc, or 0-10Vdc and an RS232 serial port as well as electrically isolated relay contacts.
• Electronics housed in IP65 enclosure
• 4 wire PRT measurement for Dew Point
• ±0.5gr/lb Accuracy for Dew Point
• Barometric Sensor
• ± 0.044 “ Hg accuracy for Barometric Pressure
• Long term stability and repeatability
• Manifold Assembly Kit
• LCD Display
• Comes with a NIST certificate of compliance
• Probe is installed in air tight housing with minimal resistance to intake air
• Can be remote mounted or integral
| Range: | Dew Point (Standard): 0.56gr/lb to 1070gr/lb Barometric Pressure: 0 to 30” Hg |
| Accuracy: | ±0.5gr/lb Dew Point, ±0.044”Hg Barometric Pressure |
| Hysteresis: | Negligible |
| Repeatability: | ±0.1gr/lb |
| Flow Rate: | 2.7gr/lb /sec not including settling time |
| Pressure: | 100 psig maximum (higher pressure available on special order |
| Analog Outputs: | 2 analog ouputs (4-20mA / 0-5 Vdc to 0-10Vdc selectable) |
| Load: | 4 to 20mA: 0 to 250 ohms 0 to 5/10 Vdc: 1 K ohm or higher |
| Serial Output: | RS232 bi-directional |
| Relay Outputs: | 2 programmable alarm relays K1: Clean mirror / Alarm 1 K2: Servolock / Alarm 2 Contact Rating: Normally Open(NO) 3A at 25Vac or 30Vdc |
| Remote Cable Configuration: | 10 ft. standard, 50 ft. maximum |
| For Dew Point: | 2 stages of cooling (TEC) with a depression of 60°C |
| Mirror: | Standard: Chrome plated |
| Power Supply: | 24Vdc ± 20%, 1A maximum |
| Weight: | 3 lbs. or 1.4 kg |
• Automotive
• Educational Institutions
• R&D Test & Measurement
• Dynamometers
• Engine Test Cells
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