Signal Isolator Convertor Modules

Model Wise Description

Model                 Product Description

ISM-10-              Single input & Single output  with 110-230 VAC supply

ISM-10-X            Single input & Multi output (X = 2, 3 or 4)

ISM-12               Single input & Single output  with 24VDC supply

ISM-12-2            Single input & Two outputs with 24 VDC supply

ISM-12-X            Single input & Multi output (X = 2, 3 or 4) with 24 VDC supply

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

Range

User may specify the required temperature range (for RTD or T/C input). For other inputs the required calibration range can be specified.

Output

(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.

For current output, RL (max.) = 500 Ohms.

For voltage output, RL (min) = 10K Ohms.

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.

Mounting

35-mm. DIN rail mounting ABS enclosure.

Mounting

Size

ISM-10:45 x 75 x 100 mm.

ISM-12:22 x 75 x 100 mm.

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