DI739 - Dual Isolator

Product Diagram

The DI739 combines two fully independent isolator channels in one housing.

The inputs are factory configured to customer requirement. Both outputs are coding plug configurable for common process signals (Factory default is 4-20mA out). Final calibration can be trimmed by using the front accessible SPAN (S) and ZERO (Z) potentiometers. The optional alarm point on channel 2 is also set by potentiometer utilising the adjacent test socket.

The wide swing DC/DC converter allows for two power supply ranges: 10-60Vdc (16-42Vac), 80-280Vac (80-300Vdc). Isolation is 2kVr.m.s. between all 6 ports. Connection is via unpluggable screw 8-way terminals.

The DI739 can be used in a number of ways:

-Two channel isolation and any mix of signals. -Isolation and conditioning of two field sensors. -Signal splitting (one input and two isolated outputs). -Range splitting where output 1 responds to 0-50% of input, output 2 to 50-100% of input.

See TCS726 for thermocouple splitting.



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 Phase-out Product


Phase-out products are in the process of being discontinued but are still available. Phase-out products will remain available for a limited period and usually have higher price and lead time. Delivery is typically 12 days.

Order Processing


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.