You can get a Plan Review by an architect at the Fire Marshalâs Office, and they have satellite offices all over the state.
Primary flow element. A primary flow element is the element of a flow meter that serves to indicate the quantity or velocity of flow. For example, in the case of an orifice flow meter, the differential pressure across the orifice plate is the primary flow element.
Totalflow flow meters employ a 250 ohm resistor to convert the 4-20 milliamp transmitter. current loop to a 1-5VDC signal. In some meters this conversion is made by attaching a 250 ohm. resistor across the 4-20ma input pins (see Fig. 1-2A). Some meters use a small three-pin jumper.