Sensor box for use in particularly harsh operating conditions containing two sensors, one signal conditioner with 4...20mA output, one signal conditioner with 0...5V output and two safety relays for threshold monitoring
The SBL1S is a
pressure die cast aluminium housing (IP65) with two integrated
sensors for uniaxial measurement of inclinations.
In addition to the sensors, the housing contains one signal conditioner with 4...20mA output and one signal conditioner with 0...5V output. These include active low pass filters, whose upper cut-off frequencies / settling times can be adjusted to fit the measuring task, and noise voltage filters to ensure the EMC. Interference signals caused by undefined ground currents are eliminated by electrically isolating sensors and signal conditioners from each other and the housing.
The voltage output of the SBL1S has two switch outputs, each with a safety relay. Two helical potentiometers allow the setting of two trigger thresholds within the measuring range, at which the corresponding relay triggers. Each relay output has an independent opening and closing contact. The switching hysteresis can be adapted to the measurement task.
A special electronic temperature compensation system can significantly reduce the temperature sensitivity of the implemented sensor.
The compact PG cable gland and compact housing size in combination with the 15-wire connection enable the use of this high quality measuring system in harsh operating conditions.
The SBL1S has its application in areas requiring precise inclination measurements under harsh circumstances and consideration of special safety demands. Areas of successful implementation include construction, mining (especially large open pit mining machinery), agricultural machinery, transportation and conveyor systems, ships, operation and automation technology as well as general mechanical engineering.
|Terminal connector||15channel x 1.5mm2 (pin rail)|
|Cable fixing||PG21 (metal with integrated strain relief clamp)|
|Measuring range, Resolution, etc.||dependent on implemented SEIKA sensor|
|Degree of protection||IP65|
|Measuring planes (N.., NB.. sensor)||3 main housing planes|
|Measuring plane (NG.. sensor)||parallel to housing bottom|
|Channel 1||4...20mA current output|
|Terminal voltage||10V ... 30V|
|Minimum loop current||2.5mA ... 3.5mA|
|Maximum loop current||23mA ... 26mA|
|Output loop current||4...20mA (12mA for sensor zero position)|
|Adjustable variables||zero (12mA), amplification|
|Maximum load resistance||500 Ohm (at 24Volt supply voltage)|
|Channel 2||0...5 Volt voltage and relay output|
|Supply voltage optionally||12V or 24V|
|Operating current||max. 10mA|
|Normalized output range||0.5V ... 4.5V|
|Maximum output range||0.05V ... 4.95V|
|Output impedance||100 Ohm|
|Capacitive output signal loading capacity||any, taking dynamic requirements into account|
|Switching stages||two SIEMENS safety relays SA2A311; these relays comply with safety regulations|
|Contacts||an independent open and close contact per relay|
|Contact loading capacity||250 Volt, 6 Ampere|
|Adjustable variables||zero (2.5V), amplification, upper and lower trigger threshold|
|Low pass filter||active, 4th order, minimal ripple|
Options: special measuring ranges, custom switching hysteresis, calibration record
Dimensions (in mm)
Connections - 0 to 5 Volt and threshold monitoring channel
Attention! Do not short circuit the supply voltage with one of the signal outputs.
SEIKA Mikrosystemtechnik GmbH - Ellharter Strasse 10 - 87435 Kempten - Germany - EMail: firstname.lastname@example.org