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.

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

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Emerson Process Management 1500 manual Flow direction = Reverse

1500 specifications

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