Chapter 7. Specifications

Technology

Force-feedback digital sensor with digital and analogue outputs

Configuration / Topology

Triaxial orthogonal (ZNE)

Frequency response

120 s (0.0083 Hz) to 100 Hz
User selectable long-period corner of 1, 10, 20, 30, 45, 60, 90, 100 or 120 seconds.

Full-scale analogue output

Differential: ±20 V (40 V peak-to-peak)
Single-ended: ±10 V (20 V peak-to-peak)

Output sensitivity (analogue)

1000 V/msˉ¹
(other options available)

Output sensitivity (digital)

4.2 × 10⁸ counts/ms⁻¹

Clip level

26 × 10⁻³ ms⁻¹

Sensor dynamic range

155 dB

Self-noise

-173 dB at 10 seconds

Operational tilt range

±90°

Cross axis rejection

> 65 dB

Linearity

> 95 dB

Lowest spurious resonance

> 450 Hz

Transfer function

Measured sensitivity, frequency response and instrument poles and zeros are stored within the instrument and accessible via web interface of Minimus digitiser

Mass positions

Three independent mass-position outputs

Centring

Automatic, but can be disabled

Orientation sensor

MEMS-based accelerometer (three component)

Other sensors

Temperature, pressure and relative humidity

Operating temperature

-20 to +60 °C

Relative humidity range

Zero to 100 %

Power supply

10 – 36 Volts DC

Power consumption @ 12 V

250 mW (As a result of semiconductor availability problems, this figure is subject to change without notice)

Casing material

Stainless steel

Weight

1.9 kg (without cable)

Dimensions

80 mm × 80 mm × 112 mm high to top of connector

Connector type

MIL-DTL-38999 Series III, 22-pin male

Installation depth

≤ 10 m

Environmental protection

IP68