ADA174 - Absolute Differential Alarm

Product Diagram

The ADA174 determines the difference in magnitude of two inputs. The alarm relay will operate based on the difference in the two signals.

The ADA174 will accept all common process inputs plus a large range of sensors and ac measurements using input-conditioning cards.

The RMS responding current measurement when used with HALL CT input provides total isolation and true waveform transfer.

Each input can be configured to measure different process variables that must be kept within a specific range of each other.

The trip-point and dead-band are adjusted using front mounted 15-turn trim potentiometers.



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 Niche Product


Niche products are usually designed to perform less common functions and may contain made to order assemblies. Niche products have longer delivery times, typically 6 days.

Alternate Products


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.