Signal Convertor Isolator Modules
Product Specification :
Model wise descriptions :
|Model||Products Description||Size w x h x d (mm.)|
|ISM-10||Single input & Single output with 110-230 VAC supply||45 x 75 x 100|
|ISM-10-X||Single input & Multi output (X = 2, 3 or 4)||45 x75 x 100|
|ISM-12||Single input & Single output with 24VDC supply||22 x 75 x 100|
|ISM-12-2||Single input & Two outputs with 24 VDC supply||22 x75 x 100|
|ISM-12-X||Single input & Multi output (X = 2, 3 or 4) with 24 VDC supply||45 x75 x 100|
Libratherm offers AC / DC Signal Convertor cum Isolator (Model: ISM-10), designed in 35 mm. DIN Rail compatible modules. These modules accepts AC/DC input signal and provides optically / galvanically isolated output in the form of (4-20)mA or (0-5)V or (0-10)V proportional to the input signal. Both the input and output levels have their grounds optically / galvanically isolated. Thus the process signals received from the Transducers or transmitters or Sensors can be directly connected through ISM-10 to the PLC, DCS or to any other electronics in the process industry accepting such signals, without any signal loss or ground line interference. The ZERO and SPAN presets are accessible to the user for on site calibration and matching.
These modules operate on 230 VAC or 110 VAC supply or 24VDC. The module with single input and multiple parallel outputs (Model ISM-10-X and ISM-12-X) can also be provided to meet the process control requirement requiring simultaneous change of 2 to 4 outputs proportional to the single input variation. These modules are rugged, reliable, field proven and economically priced. These modules operate on 230 VAC or 110 VAC supply or 24VDC. The module with single input and multiple parallel outputs (Model ISM-10-X and ISM-12-X) can also be provided to meet the process control requirement requiring simultaneous change of 2 to 4 outputs proportional to the single input variation. These modules are rugged, reliable, field proven and economically priced.
• Accepts AC/DC signal inputs and provides optically/galvanically isolated proportional analogue output.
• On site calibration facility-using ZERO/SPAN presets.
• Operates on 230VAC/110VAC or 24VDC.
• Interface of low-level signals coming from the sensors or transducers from the plant to DCS, SCADA, PLC or PID process controllers without ground
• line interferences.
• Signal multiplier – single input and 2 to 4 outputs
Technical specifications :
|Input||1) DC input - RTD (Pt-100) / 2 or 3 wire or Thermocouple (Type to be specified), or mV, mA input or Load cell, pressure sensor, pH/ORP sensor etc. generating DC current or voltage.
2) AC input - Current (through external CT) (0-1)A or (0-5)A or Voltage (0-110)VAC or (0-230)VAC.
3) Frequency input DC levels of clock pulses of max. 10KHZ. @ (12-24)VDC
User may specify the required temperature range (for RTD or T/C input). For other inputs the required calibration range can be specified.
(4-20) mA, (0-20) mA, (0-1) VDC, (0-5) VDC, (0-10) VDC, Frequency (0-1)KHz, (0-5)KHz, (0-10)KHz etc. proportional to the specified input range.
|No. Of Outputs||Maximum 4 parallel independent outputs can be provided for single input. Each output can be of different signal type.|
|Accuracy||For Thermocouple and RTD Input, the calibration of output is done for the best straight line fit to give accuracy of +/- 0.5% to +/-1% of the range. For other input the linearity depends on the input signal, where output accuracy is absolute to the input.|
|Cold junction Compensation||
Automatic for Thermocouple Input.
|Calibration||On site calibration facility through ZERO and SPAN presets accessible to the user.|
|Isolation||Input and Output are optically isolated for DC inputs and galvanically isolated for the AC inputs. Power supply is also isolated from Input and Output.
|Isolation Voltage||Greater than 2KV.|
35-mm. DIN rail mounting ABS enclosure.
|Supply||AC Supply : 90-240VAC, 50/60Hz or
DC Supply : 24VDC +/- 10%.
|Size||As given in the table.|