Jewell Model 520 Geodetic Platform Tiltmeter

Jewell Model 520 Geodetic Platform Tiltmeter Our top performer for surface applications, Model 520 is designed for projects demanding maximum resolution and stability. Applications include leveling and alignment of platforms and antennae, measurement of earth tides and crustal deformation, and volcano monitoring. With resolution finer than 10 nanoradians, Model 520 […]

Jewell Model 520 Geodetic Platform Tiltmeter

Our top performer for surface applications, Model 520 is designed for projects demanding maximum resolution and stability. Applications include leveling and alignment of platforms and antennae, measurement of earth tides and crustal deformation, and volcano monitoring. With resolution finer than 10 nanoradians, Model 520 is excellent for use in all static tilt applications, or as a sensitive long-period accelerometer.

Each system includes the tiltmeter, a rugged fiberglass switch box and a 3-meter interconnect cable. Select among three gains and two low-pass Butterworth filters using switches in the switch box. Leveling and user calibration of the tiltmeter are performed with built-in micrometers or worm gear legs. Mechanical adjustment range is ±3 degrees.

Range (Biaxial) Low: ±1400 Middle: ±160 High: ±16 µradians
Resolution < 10 nanoradians (< 0.01 µradians)
Output ±8 VDC single-ended and ±16 VDC differential
Power Requirement ±11 to ±15 VDC @ 15 and 7mA
Temperature Range -25 to 70°C
Dimensions Tiltmeter: 230 x 230 x 129 mm Switch box: 230 x 200 x 140 mm
Housing Anodized aluminum, O-ring seals
Dimensions Tiltmeter: 230 x 230 x 129 mm Switch box: 230 x 200 x 140 mm
Temperature Range -25 to 70°C