Pro Gyro® Professional Grade Rate Gyro

The Watson Pro Gyro® rate sensor is ideal for professional level testing and instrumentation. The Pro Gyro® offers excellent specifications for stability, vibration rejection, and acceleration insensitivity. This rate gyroscope has a wide allowable range for input power, and offers rate ranges up to 475° per second.


  • Accurate in severe environments
  • Excellent performance (time, temperature, vibration)
  • Rugged
  • Wide bandwidth
  • Low drift
  • Low noise
  • High reliability
  • Two-year warranty

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Pro Gyro® is made for accuracy.

Watson Industries has been designing and making solid-state gyros since 1980. They have now produced a new series of rate gyros, the Pro Gyro®. This breakthrough new gyro is built, to be a VSG replacement and much more. Based on proven technology, this gyro is built under the latest ISO 9001 quality standards with new features including built-in test and enhanced EMI/RFI protection.

The Pro Gyro® has excellent performance for stability, acceleration insensitivity, low mounting sensitivity and vibration rejection. This is achieved by having a sensing element that is finely tuned and temperature compensated. The advanced tuning methods allow better relative tolerances and better signal to noise performance. Special internal mounting holds the gyro sensing element in a stable alignment while rejecting linear vibration.

Upgrades that are standard for the Pro Gyro® include available rate ranges up to 475 degrees per second, internal power regulation for power input between 8 volts and 45 volts, and a case mounted connector.


Angular Rate

Range: ±100°/sec (Typical) See table below
Resolution: 0.025°/sec (Typical) See table below
Analog Scale Factor: 50mV/°/sec (Typical) See table below
Scale Factor Accuracy: 0.2% At constant room temperature
Scale Factor Temp Coefficient: 0.5% Over temperature range
Bias: ±0.1°/sec At room temp
Bias: Over Temp Range ±0.5°/sec
Warmup Drift: ±0.1°/sec
Non-Linearity: < 0.15% Full scale range
Bandwidth: 70 Hz
Noise: < 0.1°/sec rms 1 Hz to 100 Hz


Temperature: Operating -40°C to 85°C
Temperature: Storage -55°C to 85°C
Vibration: Operating 5g rms 20 Hz to 2 KHz
Vibration: Survival 10g rms 20 Hz to 2 KHz
Shock: Survival 500g 10mS ½ sine wave


Input Power: 8 to 45VDC Reverse protected
Input Current: 25mA @ 12VDC 0.3W
Analog Output: ±5VDC (Typical) See table below
Analog Output Impedance: 1000 Ohm 5%


Size: Including Mounting Flanges 1.2″W x 2.8″L x 1.2″H 3.0 x 7.1 x 3.0 (cm)
Weight: 2 oz 56 grams
Connection: Amp 1445057-6
Connector (6 pin)
Mating Connector Incl.
12″ Wire bundle optional
Life: > 100,000 Hrs MTBF 20 years shelf life
Specifications are subject to change without notice.
This product may be subject to export restrictions. Export Classification ECCN EAR99.

Watson Industries Pro Gyro® Models*

Model Range Output Zero Ref
Scale Factor Resolution
PRO-122-2A ±50°/sec 0 to 5 VDC 2.5 VDC 50mV/°/sec 0.025°/sec
PRO-122-3A ±50°/sec ±5VDC 0.0VDC 100mV/°/sec 0.013°/sec
PRO-132-2A ±100°/sec 0 to 5 VDC 2.5 VDC 25mV/°/sec 0.05°/sec
PRO-132-3A ±100°/sec ±5 VDC 0.0 VDC 50mV/°/sec 0.025°/sec
PRO-142-2A ±200°/sec 0 to 5 VDC 2.5 VDC 12.5mV/°/sec 0.01°/sec
PRO-142-3A ±200°/sec ±5 VDC 0.0 VDC 25mV/°/sec 0.05°/sec
PRO-152 ±400°/sec See PRO-152 Spec Sheet for detailed specs
*Custom ranges are available.



Title File Type
Pro Gyro® Spec Sheet pdf Download
Pro Gyro® Unipolar Owner’s Manual pdf Download
Pro Gyro® Bipolar Owner’s Manual pdf Download


There are two options that are available when ordering a Pro Gyro®. Please note that both options can be applied to a gyro at the same time.

  1. Wire Bundle (Flying Leads): To order a Pro Gyro® with optional 12” wire bundle, add a ‘W’ to the part number. For example: PRO-122-3AW.
    Wire Color Wire size Description
    Red 24 awg extruded TFE +8 to +45V Supply
    Black 24 awg extruded TFE Power Ground
    Blue 24 awg extruded TFE Angular Rate Output
    Orange 24 awg extruded TFE +2.5 Voltage Reference Output
    Green 24 awg extruded TFE Signal Ground (Connected internally to Power Ground)
    Yellow 24 awg extruded TFE Built In Test (BIT) Output
  2. Alternate Orientation: To mount a Pro Gyro® so that its sensitive axis is parallel with the mounting surface, you can order the gyro with an alternate enclosure. An image and dimensions of an alternate orientation gyro are included in the product image gallery above. Ordering this gyro instead of the standard involves changing one number in the gyros part number. For example: The part number for a PRO-122-3A with an alternate enclosure would be a PRO-123-3A.