Sensor box containing one sensor and one signal conditioner with 0...5V output



The SB1U is a pressure die cast aluminium sensor housing (IP65) with an integrated sensor for measuring uniaxial acceleration or inclination.
As well as the sensor, the box contains a signal conditioner with 0 ... 5V output and a separate, highly stable supply voltage that can be used externally as a reference point. Furthermore, the signal conditioner includes an active low pass filter, whose upper cut-off frequency / settling time can be adjusted to suit the measurement task, and a noise voltage filter to guarantee the EMC. Interference signals caused by unwanted ground currents are eliminated by electrically isolating sensor and signal conditioner from the housing.
Unlike the SB2.., the SB1U can accommodate larger inclinometers, such as the NG.. series, that have a higher measuring accuracy. A special electronic temperature compensation system can significantly reduce the temperature sensitivity of the implemented sensor.
The compact PG metal cable gland and small housing size in combination with the max.5-wire connection enable the use of this high quality measuring system in harsh operating conditions.


The SB1U is suitable for applications requiring precise inclination or acceleration measurements under harsh circumstances and returning of a 0 ... 5V output signal. Areas of successful implementation include construction, mining, agricultural machinery, transportation and conveyor systems, ships, operation and automation technology as well as general mechanical engineering.

Technical Specifications

Terminals 6 x 1.5 mm2
Cable fixing M12 x 1.5 cable gland, clamping range 6 - 7.5 mm
Measuring range, Resolution, etc. dependent on implemented SEIKA sensor
Degree of protection IP65
Mounting orientation any
Measuring planes (N.. sensor) 3 main housing planes
Measuring plane (NG.. sensor) parallel to bottom of housing
Measuring directions (B.., BD.. sensor) X,Y,Z coordinates of housing
Supply voltage 9V ... 30V
Operating current approx. 5mA
Normalized output voltage range 0.5V ... 4.5V
Output zero point 2.5 Volt
Maximum output voltage range 0.05V ... 4.95V
Output resistance 100 Ohm
Capacitive output loading capacity any, taking dynamic requirements into account
Output reference voltage (5 ±0.005) Volt (max.0.5mA) 20ppm/K
Adjustable variables zero point (2.5V), amplification
Low pass filter active, 5th order, minimal ripple
Operating temperature -40...+85°C

Options: special measuring ranges, calibration record, silicon encapsulation, custom wiring

Dimensions (in mm) and Connections

Attention! Do not short circuit the supply voltage with one of the outputs.


SEIKA Mikrosystemtechnik GmbH - Söllerweg1- D 87487 Wiggensbach - email: - Tel.+49 8370 9290070 - FAX:+49 8370 9290079