Installation Worksheets

Worksheet for Intrinsically Safe System Power Requirements

Use the following table to size I.S. power for I.S. systems and add the total number of required I.S. power supplies to Worksheet for Products Using Only 24 VDC Power.

Table: I.S. System Power Requirements
Product Type Quantity Amps Required for Each Product Total for Product Type
I.S AI, 4-20, mA, 8-Channel with HART 0.600
I.S. AO, 4-20 mA, 8-Channel (with HART) 0.630
I.S. DI, 16-Channel 0.350
I.S. DO, 4-Channel 0.560
I.S. LocalBus Isolator 0.060
Grand total
I.S. System Power Supply (5 A max each) Provides 5 A @ 12 V (Grand Total / 5A = Quantity)
Redundant I.S. System Power Supplies (1 max)
Total number of power supplies (add to the Worksheet for Products Using Only 24 VDC Power )