Pressure Sensors, Humidity Sensors, Air Velocity Transmitters, Pressure Switch, Sensors, Transducers, Pressure Guage, Differential Pressure Guage, Digital Controller, Mumbai, India

AccuStar® II/DAS 20

Dual Axis Clinometer

AccuStar® II/DAS-20 combines the function of two clinometers in one package. The unique dome shaped
design features a capacitance based sensor which produces output signals directly proportional to the relative tilt in two axes.

Designed for high volume applications, AccuStar® II/DAS-20 is priced to compete with much less capable mercury switches and other low cost level sensors.

There are four output connections providing a choice of ratiometric, pulse width modulation (PWM) digital output. A mating connector (sold separately) provides the user with an easy plug-in connection. Null and scale factor are ajustable.

Features
	New microprocessor-based electronics
	Two clinometers in one package
	Adaptable design DC powered
	Ratiometric and PW digital output in one model
	Trimmable outputs

Applications
	Platform leveling
	Measure pitch and roll
	Tip over protection for manlifts
	Automatic leveling systems
	Wheel alignment

Electrical

Voltage Supply (nominal) 9 VDC
Voltage Supply Range ......              Regulated 5.0 to 15.0 VDC
Current ..........................10 mA
Analog Output
Scale Factor* @ 9 VDC 100                           mV/degree ±10%
Load Resistance (min) .. 10K                                          Ohms
Null Output ....................... 1/2 supply voltage ±10%
Pulse Width Output
Null ................................. 50%                                   (duty cycle)
Scale Factor ................... 0.7% /                            degree (nominal)
Duty Cycle ..................... t2 /          (t1+ t2) t1 and t2 varies from
                            0.2 to 0.7 msec
Frequency .......................... 100                                    Hz nominal

Physically the sensor is composed of two hermetically sealed domes spaced about 1/8" apart. The lower, polyester plastic dome has 4 capacitive plates while the aluminum, upper dome acts as a ground. A fluid with a high dielectric constant is sealed within the dome sandwich, leaving an air bubble space about the size of a quarter. The bubble is centered at level position and will move from one side to the other as the device is tilted.
AccuStar-II-DAS-20-dg

Environmental
	Temperature Range Operating ...................... -20° to 65°C Storage .......................... -55° to 65°C Temperature Coefficient of Null ................. 0.01°/°C Temperature Coefficient of Scale Factor ...............0.10%/°C

Performance Specifications
	Range ........................ ±20° Threshold / Resolution .. 0.01 Linearity Null to 10° ................ ±0.2° 10° to 12° ................ ±2.5% 12° to 15° .................. ±3.0% 15 to 20° ............. Monotonic Null Repeatability.....±0.1 Frequency Response (-3db) ......... 0.25 Hz (0.50 Hz available, consult factory)