Angular Accelerometers for Rotational Studies

Models SR-100FR and SR-200RFR from Columbia Angular Accelerometers have been developed specifically for low-level near DC applications.

Such sensors tend to incorporate the fluid rotor idea to offer extremely high sensitivity and complete scale ranges as low as +/–0.01 radians/second². The high-performance torquer design holds reliability and ruggedness in extreme vibration and shock surroundings.

The Model SR-100FR functions from a +/–15 V power source and consists of an output span of +/–5 volts for full-scale input. The Model SR-200RFR features the same sensor system as the SR-100FR but offers electronics that function from a +24 to +32 volt aircraft supply and supplies 0 to 5 V output.

Both units are entirely self-contained and need no extra amplification or conditioning. Applications for such high sensitivity accelerometers consist of rotational studies or stabilization of structures, antennas, chipsand platforms.

High sensitivity

High-performance fluid rotor design

Angular Accelerometers for Rotational Studies

Image Credit: Columbia Research Laboratories

Specifications

Table 1. Source: Columbia Research Laboratories

Operational	SR-100FR	SR-200RFR
Ranges Available	±0.1 To ±5 Rad / Sec²
Output Voltage	±5 Voltsinto 100 K Load	0.2 To 4.8 VDCinto 100 K Load
Excitation	±15 VDC<20 mA	+24 To +32 VDC<30 mA
Output Impedance	5,000 Ohms Typical
Sensitive Axis Alignment	0.5 Deg
Scale Factor Tolerance	±1%
Scale Factor Temp Coefficient	0.054% / Deg C	0.07% / Deg C
Zero Bias	2 mRad / Sec² Max.	2.5 ±0.01 VDC
Null Temp Sensitivity	45 µRad / Sec²/Deg C	60 µRad / Sec²/Deg C
Natural Frequency	10 Hz Min.
Damping Ratio	0.6 To 1
Linear Acceleration Sensitivity	10 mRad / Sec² / G
Cross Axis Sensitivity	<0.5%
Output Noise	2 mRad / Sec² RMS
Non-Linearity	±0.1% F.R.
Hysteresis & Non-Repeatability	±0.1% F.R. ±0.2% F.R.
Threshold & Resolution	0.001% F.R.

Environmental	SR-100FR	SR-200RFR
Temperature, Operating	-40 To +71 Deg C
Temperature, Storage	-40 To +71 Deg C
Vibration Survival(2 To 2,000 Hz)	10 G RMS,0.5” Disp D.A.
Linear Acceleration Survival	100 G
Shock Survival	100 G, 11 mSec
Ambient Pressure	0 To 5 Atmospheres
Humidity	95% R.H.

Physical	SR-100FR	SR-200RFR
Weight	3.5 Lbs. Max (1.58 KG)
Size	6.56 In. Dia. x 2.375 In. H (16.7 cm Dia. x 6.0 cm H)
Case Material	Anodized Aluminum
Sealing	Environmental
Connector	DT07H-12-8PN or Equiv.	PTIH-10-6P or Equiv.
Optional Mating Connector	PT06A-12-8S or Equiv.	PT06A-10-6S or Equiv.

I/O Connector Pin Functions

SR-100FR

Table 2. Source: Columbia Research Laboratories

Pin	Function
A	Sig & Pwr Return
B	Current Output
C	Signal Output
D	Test –
E	-15 VDC
F	+15 VDC
G	Test +
H	Spare

SR-200RFR

Table 3. Source: Columbia Research Laboratories

Pin	Function
A	Sig & Pwr Grd
B	+28V Input
C	Test
D	Eo (Voltage Out)
E	I o (Current Out)
F	I o (Current Ret)

标签：Sensors

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