Emerson Process Management 1500 manual Example, Optional Transmitter Configuration

Optional Transmitter Configuration

Example 2	Configuration:
	• Flow direction = Reverse
	• mA output: 4 mA = 0 g/s; 20 mA = 100 g/s
	(See the second graph in Figure 6-1.)
	As a result:
	• Under conditions of forward flow or zero flow, the mA output level
	is 4 mA.
	• Under conditions of reverse flow, up to a flow rate of 100 g/s, the
	mA output level varies between 4 mA and 20 mA in proportion to
	the absolute value of the flow rate.
	• Under conditions of reverse flow, if the absolute value of the flow
	rate equals or exceeds 100 g/s, the mA output will be proportional
	to the absolute value of the flow rate up to 20.5 mA, and will be
	level at 20.5 mA at higher absolute values.
Example 3	Configuration:
	• Flow direction = Forward
	• mA output: 4 mA = –100 g/s; 20 mA = 100 g/s
	(See the first graph in Figure 6-2.)

As a result:

•Under conditions of zero flow, the mA output is 12 mA.

•Under conditions of forward flow, up to a flow rate of 100 g/s, the mA output varies between 12 mA and 20 mA in proportion to (the absolute value of) the flow rate.

•Under conditions of forward flow, if (the absolute value of) the flow rate equals or exceeds 100 g/s, the mA output is proportional to the flow rate up to 20.5 mA, and will be level at 20.5 mA at higher flow rates.

•Under conditions of reverse flow, up to a flow rate of 100 g/s, the mA output varies between 4 mA and 12 mA in inverse proportion to the absolute value of the flow rate.

•Under conditions of reverse flow, if the absolute value of the flow rate equals or exceeds 100 g/s, the mA output is inversely proportional to the flow rate down to 3.8 mA, and will be level at 3.8 mA at higher absolute values.

44 Micro Motion® Model 1500 Transmitters with the Filling and Dosing Application