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Jewell Model 850 MEMS Tuff Tilt Series

Updated:2026-01-23

Brand: Jewell
Model: Model 850
Description: This geotechnical MEMS tiltmeter is available in uniaxial and biaxial configurations. It presents a robust and rugged design for outdoor geotechnical use, but with the benefit of low-cost MEMS technol
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Product Details

Jewell Model 850 MEMS Tuff Tilt Series Description：

Datasheet Outline Drawing

This geotechnical MEMS tiltmeter is available in uniaxial and biaxial configurations. It presents a robust and rugged design for outdoor geotechnical use, but with the benefit of low-cost MEMS technology and ±5VDC, 0-5 VDC, or 4-20 mA output signals. It is an effective tilt sensing solution for platform leveling/positioning, structural monitoring, construction monitoring, industrial machinery positioning, radial gate measurement & control.

Specifications

A850-D: ±5VDC Output

Measurement Range (°)¹	±14.5	±30	±90
Output Voltage Range (VDC)	±5	±5	±5
Scale Factor Tolerance (%)	±1	±1	±1
Scale Factor Temperature Coefficient (PPM/°C maximum)	150	150	150
0° Output (Volts, maximum)	±0.03	±0.03	±0.03
0° Output Temperature Sensitivity (V/°C maximum)	±0.004	±0.004	±0.004
Transverse Axis Misalignment (° maximum)	±0.5	±0.5	±0.5
Resolution (° maximum)	0.002	0.002	0.004
Threshold (° maximum)	0.002	0.002	0.002
Non-linearity (% FRO maximum)	0.05	0..05	0.05
Nonrepeatability, Hysteresis (%FRO maximum)	0.014	0.007	0.004
Bandwidth (-3dB, Hz nominal)	5	5	5
Warm-Up Time (seconds, maximum)	0.5	0.5	0.5
Voltage to Radian Conversion²	ASIN(/20)	ASIN(/10)	ASIN(/5)
Temperature Sensor	PTC Thermistor, Nominal resistance: 1kΩ, ±2%, dissipation constant 2mW/°C

Number of Axes	1 or 2
Input Voltage Range (VDC)	±12 to ±18
Input Current (mA, maximum)	±6
Output Noise (Vrms maximum)	0.005
Output Impedance (Ω nominal)	1
Operating Temperature Range (°C)	-40 to +85
Storage Temperature Range (°C)	-40 to +95
Shock	100g. 0.011 sec, ? sine
Seal	IP65

A850-S: 0-5VDC Output

Measurement Range (°)¹	±14.5	±30	±90
Output Voltage Range (VDC)	0-5	0-5	0-5
Scale Factor Tolerance (%)	±1	±1	±1
Scale Factor Temperature Coefficient (PPM/°C maximum)	150	150	150
0° Output (Volts, maximum)	±0.03	±0.03	±0.03
0° Output Temperature Sensitivity (V/°C maximum)	±0.004	±0.004	±0.004
Transverse Axis Misalignment (° maximum)	±0.5	±0.5	±0.5
Resolution (° maximum)	0.002	0.002	0.004
Threshold (° maximum)	0.002	0.002	0.002
Non-linearity (% FRO maximum)	0.05	0..05	0.05
Nonrepeatability, Hysteresis (%FRO maximum)	0.014	0.007	0.004
Bandwidth (-3dB, Hz nominal)	5	5	5
Warm-Up Time (seconds, maximum)	0.5	0.5	0.5
Voltage to Radian Conversion²	ASIN(-2.5/10)	ASIN(-2.5/5)	ASIN(-2.5/2.5)
Temperature Sensor	PTC Thermistor, Nominal resistance: 1kΩ, ±2%, dissipation constant 2mW/°C

Number of Axes	1 or 2
Input Voltage Range (VDC)	12 to 30
Input Current (mA, maximum)	7
Output Noise (Vrms maximum)	0.005
Output Impedance (Ω nominal)	1
Operating Temperature Range (°C)	-40 to +85
Storage Temperature Range (°C)	-40 to +95
Shock	100g. 0.011 sec, ? sine
Seal	IP65

C850: 4-20mA Output

Measurement Range (°)¹	±14.5	±30	±90
Output Voltage Range (mA)	4-20	4-20	4-20
Scale Factor Tolerance (%)	±1	±1	±1
Scale Factor Temperature Coefficient (PPM/°C maximum)	150	150	150
0° Output (Volts, maximum)	12±0.3	12±0.3	12±0.3
0° Output Temperature Sensitivity (V/°C maximum)	±0.004	±0.004	±0.004
Transverse Axis Misalignment (° maximum)	±0.5	±0.5	±0.5
Resolution (° maximum)	0.002	0.002	0.004
Threshold (° maximum)	0.002	0.002	0.002
Non-linearity (% FRO maximum)	0.05	0..05	0.05
Nonrepeatability, Hysteresis (%FRO maximum)	0.004	0.004	0.004
Bandwidth (-3dB, Hz nominal)	5	5	5
Warm-Up Time (seconds, maximum)	0.5	0.5	0.5
Voltage to Radian Conversion²	arcsin((-12mA)/32mA)	arcsin((-12mA)/16mA)	arcsin((-12mA)/8mA)
Temperature Sensor	PTC Thermistor, Nominal resistance: 1kΩ, ±2%, dissipation constant 2mW/°C

Number of Axes	1 or 2
Input Voltage Range (VDC)	12 to 30
Input Current (mA, maximum)	28
Output Noise (Vrms maximum)	0.01
Output Impedance (Ω nominal)	1
Operating Temperature Range (°C)	-40 to +85
Storage Temperature Range (°C)	-40 to +95
Shock	100g. 0.011 sec, ? sine
Seal	IP65

Features	? ±14.5°, ±30° and ±90° ranges ? Robust and Rugged Enclosure ? Uniaxial and Biaxial Models Available ? Low-Cost MEMS Technology ? RoHS Compliant ? Filtering Available ? Dual Power Input ? ±5 VDC Output ? Temperature Sensor Option Available ? IP65 Seal
Applications	? Platform Leveling/Positioning ? Structural Monitoring ? Construction Monitoring ? Industrial Machinery Positioning ? Radial Gate Measurement & Control