Micronics Portaflow 222, Руководство пользователя

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Micronics Portaflow 222 & 333 User Manual
Issue 3.1 Feb 20 Page 35
6.1.1 Converting the measured current to flow rate
Assume the maximum flow rate is F
max
(l/min) and the minimum flow rate F
min
is ‘0’ (l/min), as shown
below.
To calculate the flow rate (l/min) for a measured current (mA) then:
0-20mA 0-16mA 4-20mA
𝐹𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 = 𝐼 𝑥
(𝐹
𝑚𝑎𝑥
− 𝐹
𝑚𝑖𝑛
)
20
+
𝐹
min
𝐹𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 = 𝐼 𝑥
(𝐹
𝑚𝑎𝑥
− 𝐹
𝑚𝑖𝑛
)
16
+
𝐹
min
𝐹𝑙𝑜𝑤 𝑟𝑎𝑡𝑒 = (𝐼 − 4) 𝑥
(𝐹
𝑚𝑎𝑥
− 𝐹
𝑚𝑖𝑛
)
16
+
𝐹
min
6.2 Digital Outputs
The three digital outputs can each be set up to operate in one of three modes:

Pulse Output (set to Normally Open or Normally Closed contact types )

Alarm Output (set to Rising or Falling signal directions)

Frequency Output (with High Frequency and Low Frequency settings)
The measurement source can be:

Volume (not compatible with Frequency Output)

Flow (not compatible with Pulse Output)

Energy (not compatible with Frequency Output)

Power (not compatible with Pulse Output)

Signal (not compatible with Pulse Output)
To configure any of the digital outputs:
1. From the MAIN menu, use the Up and Down scroll keys to select Setup Instrument . Press the
ENTER Key. With Output selected in the Options menu, press the ENTER Key.
Alternatively, from a
Read Flow/Velocity/Energy screen, press the OUTPUTS key (3). The
Output Board menu is displayed.