Hydac HMG 3000 User Manual download pdf (Page 25)

HMG 3000 Page 25

Edition 11/2007 - V02 R01-S02 Stock no.: 669712

If you have selected counter pulses as the

input signal, and have returned to the normal

measurement value display, you will find on

the far right of the function bar a symbol, as

shown in the screenshot. The counter is

currently stopped. If you select the symbol

using the arrow key and confirm with OK, the

counter is reset and will start again. To stop

it, select the symbol again using the arrow

keys and confirm again with OK.

In addition to the input channels (channels A

to channel J) there are also the virtual

channels Channel K and Channel L

available. These two channels can be used

to display a differential between 2 input

channels, or to calculate a power.

When setting to Differential the HMG 3000

calculates for channel K the difference

between channel A/channel B and for

channel L the difference between

channel C/channel D. To measure the

differential, sensors with the same

measurement range, unit (of measurement)

and number of decimal places must be used

on the input channels. These parameters are

then automatically adapted to channel K or L,

i.e. no further settings are necessary.

If you would like to measure Power (P*Q),

via channel K, the pressure must be

measured at channel A and the flow rate

must be measured at channel B. To

measure the power via channel L you have to

measure the pressure at channel C and the

flow rate at channel D. You can then select

kW, PS or hp as the unit (of measurement).

Entering the upper measurement range

merely limits the scale of the Y-axis in the

graphical display.

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