130
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Fax Back System: 916/431-6541 Europe Tel: (01753) 537622
AccuStar
® Electr onic Clinometer
Environmental Specifications
Temperature Range
Operating ....................... -30° to 65°C
Storage ........................... -55° to 65°C
Temperature Coefficient
Null ................................. 0.008°/°C
Scale Factor ................... 0.1%/°C
EMC
Emissions ....................... EN55022 (CISPR 22) Limit B
Radiated Immunity....... IEC 801-3 Level 3 10V/m
Burst Transients ............ IEC 801-4 Level 3 (2 kV)
ElectroStatic Discharge IEC 801-2 Level 2 (8 kV air, 6
kV contact)
Conducted RF................ MIL-STD 461D, CS114, Curve
2
Cable Length ................. 18" standard length with flying
lead terminaton
The AccuStar® Electronic Clinometer is an extremely
accurate angle measurement device. This compact and
rugged sensor is ideal where space is critical and
environmental conditions are serious design concerns.
The heart of the system is a patented, capacitance-based
sensor with no moving parts. When rotated about its
sensitive axis, this unique sensor provides an exceedingly
linear variation in capacitance, which is electronically
converted into angular data. The sensor and low-power
CMOS electronics are encased in a rugged plastic housing
ready to install as a system component or as a stand-alone
device.
Designed for easy integration, with a choice of analog,
ratiometric, digital or serial models, the clinometer
produces an output signal corresponding to direction and
magnitude of angular displacement.
Performance Specifications
Total Range ....................... ±60°
Linear Range..................... ±45°
Threshold........................... 0.001°
Linearity
Null to 10°...................... ±0.1°
10 to 45°........................ ±1%
45 to 60°........................ Monotonic
Null Repeatability............. 0.05°
Cross Axis Error................ <1% up to 45°
Time Constant................... 0.3 sec
Freq. Response (-3db) ...... 0.5 Hz
RF Susceptibility............... <±2°
Features
❏CE certified
❏Just 2" in diameter
❏Rugged plastic housing
❏Extremely accurate
❏Weighs only 2 oz.
Applications
❏Wheel alignment
❏Construction equipment
❏Antenna positioning
❏Robotics
Single Axis ±60° Range
131
AccuStar®
Range: ±60°
Resolution: 0.001°
Choice of Outputs
How to Order
Model Number Description
Ratiometric
0211 0002-000 Vertical Flange
0211 0102-000 Horizontal Flange
Analog
0211 1002-000 Vertical Flange
0211 1102-000 Horizontal Flange
Digital
02112002-000 Vertical Flange
02112102-000 Horizontal Flange
Serial
02113002-000 Vertical Flange
02113102-000 Horizontal Flange
Design Concept
The unique design is based on a common capacitor plate
sandwiched between sensor housing halves. The plate has
been etched to form two variable capacitors. The
assembled sensor is half filled with a dielectric liquid and
inert gas. Rotation of the sensor produces a linear change
in capacitance resulting in a corresponding output signal.
Dimensions in (mm)
0.152 x 0.548
(3.860 x 14.833)
Ø0.152
(3.860)
Ø0.152
(3.860)
0.152 x 0.548
(3.860 x 14.833)
2.274
(57.759)
2.595
(65.913)
2.274
(57.759)
2.595
(65.913)
Ø2.030
(51.562) Ø1.951
(49.555)
1.200
(30.48)
0.125
(3.175)
UP UP
Vertical Flange Mount Horizontal Flange Mount
132
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Fax Back System: 916/431-6541 Europe Tel: (01753) 537622
Ratiometric Electrical Specifications
Voltage
Voltage Supply
Nominal ......................... +9 V D C
Range (regulated) ......... +5 to +15 VDC
Current .............................. 0.5mA
Scale Factor
Nominal (@9VDC)........ 30mV/degree ±10%
Load Resistance (min.) .... 10 k0hms
Level Output (0°).............. 1/2Vcc
Electrical Connections
Wire Source
Black .................................. Power ground
Red ..................................... Reg. +5 to +15 VDC
Yellow ................................ Signal output
(reference to power ground)
Ratiometric Output
AccuStar
® Electr onic Clinometer
Features
❏Low power consumption
❏3 wire operation
The Ratiometric clinometer is a signal conditioned sensor
that has been designed to operate like a potentiometer.
This is a three wire device: power; power ground; and
signal. The signal is referenced to power ground. A
regulated power supply is required since the output is
supply dependent. The midscale output, zero degrees, is 1/
2 the supply voltage while the scale factor is also supply
dependent. With its low power consumption, 0.5 mA, this
device is ideal for battery supplied applications. The
Ratiometric clinometer was designed with EMI and ESD
suppression circuitry on every line.
Ratiometric I/O Block Diagram
One Shot
Timer Filter
One Shot
Timer Filter
Astable
Timer EMI/ESD
Suppression
+
-
I/O Interface
to External
Equipment
+VDC
Power
Ground
Sensor
Ratiometric
Output
Differential
Amplifier
Ratiometric Output
with 9 VDC supply
Output (Volts)
0
4.5
Angle (Degrees)
-15-30-45-60 15 30 45 60
5.4
6.3
3.6
2.7
133
Analog I/O Block Diagram
Analog Output
Features
❏Internally regulated
❏Bipolar input/output
The Analog clinometer is a signal conditioned sensor
which has been designed for dc voltage, bipolar operation.
The clinometer requires a bipolar supply of ±8 to ±15 VDC
and delivers an output of ±3.6 VDC. This device is
internally regulated for various applications. The output
scale is fixed at a nominal 60mV per degree not dependent
on the supply voltage. The Analog clinometer has full EMI
and ESD suppression circuitry on every line.
Analog Electrical Specifications
Voltage
Voltage Supply
Nominal ......................... ±12 VDC
Range (regulated) ......... ±8 to ±15 VDC
Current .............................. 5 mA/supply
Scale Factor ....................... 60 mV/degree ±10%
Load Resistance (min.) .... 10 k0hms
Level Output (0°).............. 0 V D C
Electrical Connections
Wire Source
Black .................................. Power ground
Red ..................................... +8 to +15 VDC
Gray ................................... -8 to -15 VDC
Blue .................................... Signal output
(reference to power ground)
AccuStar®
Range: ±60°
Resolution: 0.001°
Choice of Outputs
One Shot
Timer Filter
One Shot
Timer Filter
Astable
Timer
EMI/ESD
Suppression
+
-
I/O Interface
to External
Equipment
+VDC
Power
Ground
Sensor
Analog
Output
Differential
Amplifier Buffer
Amplifier
Voltage
Regulator
-
VDC
Analog Output
Output (Volts)
0
Angle (Degrees)
-15-30-45-60 15 30 45 60
-3.6
-2.4
-1.2
0
1.2
2.4
3.6
134
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Fax Back System: 916/431-6541 Europe Tel: (01753) 537622
Serial Electrical Specifications
Voltage
Voltage Supply
Range.............................. +5 VDC, ±5%
Current .............................. 15 m A
Scale Factor....................... 1000 counts/degree ±10%
Output................................ CMOS/TTL
Level Output (0°).............. 0 counts
Binary Range..................... 16 bits + 1 bit polarity (serial)
Electrical Connections
Wire Source
Black .................................. Power ground
Red ..................................... +5 V D C
Yellow ................................ Data
White.................................. Request/Hold
Gray ................................... Ready/Wait
Serial Data Output
AccuStar
® Electr onic Clinometer
Features
❏Microcontroller compatible
❏Ideal for noisy environments
Serial I/O Block Diagram
The Serial clinometer is a signal conditioned sensor which
resolves the angle of tilt to 16 bits of information plus a
polarity bit. This device was designed to transmit data to a
microcontroller or to an I/O card of a PC through a three
wire interface which will work at both TTL and CMOS
logic levels. Complete handshaking is used to eliminate
timing and transmission problems. The standard version
operates on a +5 VDC regulated power supply while an
internally regulated version is available. The Serial
clinometer was designed with EMI and ESD suppression
circuitry on every line.
10111110001100000
Polarity MSB LSB
16 Bits
Example
+31. 84° = 1 0 1 1 1 1 1 0 0 0 1 1 0 0 0 0 0
Contact factory for more details.
5 Vdc
0 Vdc
One Shot
Timer Event
Timer
One Shot
Timer
Astable
Timer
Sensor
16 MHz
Clock
EMI/ESD
Suppression I/O Interface
to External
Equipment
+VDC
Power
Ground
Difference
Pulse
Generator
Micro
Processor
Controller
135
Data Electrical Specifications
Voltage
Voltage Supply ..................
Nominal ............................. 12 VDC
Range.............................. 8 to 15 V D C
Current .............................. 5 mA
Scale Factor ....................... 60 µsec/degree ±10%
Load Resistance ................ 10K ohms
Level Output (0°).............. DPW = 0 sec.
PW1 = PW2
Trigger Pulse
(CE version) ................... 10 to 5 0 µsec @ 50 Hz max.
PW1/PW2 .......................... 0.5 to 5 msec
∆PW.................................... 0 to 3.6 msec
Polarity .............................. High (CW)
Low (CCW)
Electrical Connections
Wire Source
Black .................................. Ground
Red ..................................... 8 to 1 5 V D C
Brown................................. Trigger 1
Blue .................................... Trigger 2
Green ................................. Polarity
Gray ................................... PW1
White .................................. PW
Yellow ................................ ∆PW
Digital Pulse Width Output
Features
❏Internally regulated
❏Pulse width output
Digital I/O Block Diagram
The Digital Pulse Width clinometer is a signal conditioned
sensor which resolves the angle of tilt to pulses, the length
of which are directly proportional to the angle. When a
trigger pulse is received on trigger 1 or trigger 2 a pulse is
sent out the corresponding PW1 or PW2 line. Comparing
the length of the two pulses determines the angle of the
sensor. Triggering both lines together allows the user to
read Delta PW which is the difference of PW1 and PW2.
The polarity line will tell the user if the sensor is tilted
clockwise or counterclockwise. The Digital Pulse Width
clinometer was designed with EMI and ESD suppression
circuitry on every line.
AccuStar®
Range: ±60°
Resolution: 0.001°
Choice of Outputs
10 to 50µs
@50 Hz max
0.5 to 5.0 ms
0.5 to 5.0 ms
0 to 3.6 ms
Trigger
PW1
PW2
PW
Polarity
V
IH
V
IL
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
V
IH
(max) 5.3V
V
IH
(min) 3.0V
V
IL
(max) 0.8V
V
OH
(min) 4.95V
V
OL
(max) 0.05V
Polarity updated on falling
edge of PW
Polarity high CW, low CCW
Voltage output is TTL compatible. Each output can drive
one low power Schottky or multiple CMOS devices.
One Shot
Timer
One Shot
Timer
Power
Supply
Sensor
Buffer
Polarity
Generator
Buffer
Difference
Pulse
Generator
Pulse
Width 1
Pulse
Width
Pulse
Width 2
+12 VDC
Power
Ground
Polarity
EMI / ESD
Trigger #1
Trigger #2
