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| SB1I Sensor box containing one sensor and one signal condtioner with 4...20mA, 2-wire output |
Features
Description
The SB1I is a
pressure die cast aluminium sensor housing (IP65) with an
integrated sensor for measuring uniaxial acceleration or
inclination.
In addition to the sensor, the box contains a signal conditioner
with 4...20mA, 2-wire output and a separate, highly stable supply
voltage feeding off the current loop. 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, an output stage with current limitation, a noise voltage
filter and a diode bridge for unipolar coupling to the current
loop. Interference signals caused by unwanted ground currents are
avoided by electrically isolating sensor and signal conditioner
from the housing. Unlike the SB2.., the SB1I 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 metal cable guide and small housing size in
combination with the 2-wire connection enable the use of this
high quality measuring system in harsh operating conditions.
Application
The SB1I is suitable for applications requiring precise inclination or acceleration measurements under harsh circumstances and returning of a 4...20mA 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 | max.: 3 x 1.5 mm2 |
| Cable fixing | M12 x 1.5 cable gland, clamping range 6mm ... 7.5mm |
| Measuring range, Resolution, etc. | dependents 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 |
| Terminal voltage | 10V ... 30V |
| Minimum loop current | 2.5mA ... 3.5mA |
| Maximum loop current | 22mA ... 26mA |
| Output signal loop current | 4mA ... 20mA (12mA for sensor zero position) |
| Adjustable variables | zero point (12mA), amplification |
| Maximum load resistance | 500 Ohm (for 24 Volt supply voltage) |
| Operating temperature | -40...+85°C |
Options: special measuring ranges, calibration record, silicon encapsulation, custom wiring
Dimensions of SB1I containing NG inclinometer
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Connections
Since the SB1I supply voltage feeds off the current loop (the SB1I requires 3mA at most), a voltage of 10V across the SB1I terminals must be guaranteed to ensure correct functionality even for the maximum loop current of 24mA (maximum voltage drop across transmission line and load resistance). |
Dimensions and Measuring Directions of SB1I with N inclinometer
The above diagrams demonstrate the feasibility of measuring most angles of inclination and directions of acceleration with SEIKA cased sensors. The resulting multitude of different possibilities do make choices difficult. We'd be glad to give you advice on putting together the components best suited for your measurement task and are happy to receive your information on what planes and directions the inclinations and/or accelerations are to be measured. A sketch of your situation is often very handy. |
SEIKA Mikrosystemtechnik GmbH - Ellharter Strasse 10 - 87435 Kempten - Germany - EMail: seika@seika.de
H205S
