SI282 - Signal Isolator

Product Diagram

The SI282 is an isolating converter providing true 3-way galvanic isolation up to 2kV rms The SI282 produces an isolated unipolar output signal from an input signal.

The SI282 comes in four, coding plug selectable models, Process, mV, Bipolar or Bipolar mV input signals.

A 20Vdc/22mA sensor supply is available at the input section, this can be useful for loop powered field transmitters.

Final calibration is trimmed using the front accessible zero and span 15-turn trim adjustments. Maximum current drive is 20mA and maximum voltage drive is 20V. The wide swing ac/dc power supplys cover all popular requirements.

All units are fitted with a 500msec filter that can be link changed to 5 or 50msec for fast response.



Most drawings are supplied in PDF format. Portable Document Format is used to present documents in a manner independent of application software, hardware, and operating systems.


Lead Time for a Traditional Product


Traditional products usually contain the same functionally as standard and premier products but have a different connection, part number or specifications. Traditional products are still available as a service to our customers that have them specified in their plants. Delivery is typically 10 days.

Stock Variants

Stock variants usually ship in 3 day.
Power Supply 85-265Vac 50/60Hz (90-280Vdc)
Input Process Signals, Set 4-20mA
Output Link selectable, Set 4-20mA
Action Direct
Response Time 500mS
Power Supply 16-42Vac 50/60Hz (10-60Vdc)
Input Process Signals, Set 4-20mA
Output Link selectable, Set 4-20mA
Action Direct
Response Time 500mS

Order Processing

BSI134 Additional Information Required

APCS makes and customises products according to a customers order. Upon receipt of the customers order the following information is required before manufacture, allocation or deliver until full details are given, these include;

  1. Identity of purchaser. Company name, ABN (Australian companies), street address and accounts email address.
  2. Required delivery address.
  3. Full part number and calibration detail required to manufacture items.
  4. Total on purchase order to include delivery charges. Orders received with missing information will be entered and marked to indicate missing details and returned to the customer for correction or approval.

Compliance with the above ensures that your items are manufactured and delivered according to the required specifications.

Standard delivery times commence after the order has been approved for processing.