LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mA
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LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mA level developments Features • Single axis precision angle measurement • Output fully conditioned offering a complete stand alone measurement system • Ranges ±1° to ±90° • Extremely rugged (withstands 1500g shock) • Measurement resolution down to 0.1 arc seconds • Analogue output 4-20mA • Sealed connector, solder pin or wired outputs • Silicone oil and electrical damping • Highly stable over time and temperature Radar levelling and monitoring High accuracy levelling systems Satellite antenna platform levelling Semiconductor wafer handling systems Surface flatness inspection measurement systems High precision structural monitoring Pavement profiling rigs Rail maintenance equipment The LSOX Series Inclinometer is a rugged, high performance, single-axis tilt sensor designed for peek performance in extreme conditions. The fluid damped mechanism delivers superior noise rejection in high shock and vibration environments as well as excellent output stability over both time and temperature. Units are available with 6-pin connector, pin-terminals, or flying leads. The output is an industry standard 4-20mA, although other versions include +/-5V and 0-5V. Custom ranges and filters are also available on request. Wire Colour Level Developments Ltd. Croydon, Surrey, CR0 2DN t : +44 (0)20 8684 1400 sales@leveldevelopments.com 97-99 Gloucester Road United Kingdom f : +44 (0)20 8684 1422 www.leveldevelopments.com

level developments LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mA Environmental Characteristics Operating Temperature Range Survival Temperature Range Constant Acceleration Overload Shock Survival Vibration Environmental Sealing Supply Voltage Current Consumption Full Range Output (FRO) (see note 1) Output Noise Non-Linearity (see note 2) Resolution (see note 3) Bandwidth (-3dB) Sensitive Axis-to-Case Misalignment Zero Offset Error (see note 4) Thermal Zero Offset Shift Scale Factor Thermal Sensitivity Notes 1. Full Range Output is defined as the full angular excursion from...

LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mA Dimension Drawing - Connector Type Cables and Connectors The connector version of this product uses a sealed bayonet type locking Mil-Spec 6 way connector. The connectors and standard cables can be purchased directly from us (see below), and we also can supply customised cable assemblies for this product. Mating Connector Level Developments Ltd. 97-99 Gloucester Road Page 3 of 6 2m PUR Cable and Mating Connector Croydon, Surrey, CR0 2DN United Kingdom 5m PUR Cable and Mating Connector

LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mA level developments Dimension Drawing - Pin Type Axis Direction and Mounting Orientation Level Developments Ltd. Croydon, Surrey, CR0 2DN t : +44 (0)20 8684 1400 sales@leveldevelopments.com 97-99 Gloucester Road United Kingdom f : +44 (0)20 8684 1422 www.leveldevelopments.com

level developments LSO : Closed Loop Single Axis Servo Inclinometer, 4-20mADimension Drawing - Wired Type Level Developments Ltd. Croydon, Surrey, CR0 2DN t : +44 (0)20 8684 1400 sales@leveldevelopments.com 97-99 Gloucester Road United Kingdom f : +44 (0)20 8684 1422 www.leveldevelopments.com

As the LSO sensor is rotated the sensing element is subject to gravitational acceleration which exerts force on the proof mass. The proof mass is attached to a torquer mechanism in a closed loop configuration. A feedback current is applied to the torquer mechanism to maintain the mass in a positional equilibrium. The amount of feedback current is proportional to the acceleration (due to gravity) acting on the mass, and this current is converted and scaled to 4-20mA at the output stage. As such, the output from the sensor is linear with the change in acceleration (g), which means that the...