Interval Metering; Adjust Backstroke For Metering By Volume Mode; Interfaces; Analog Interface - Heidolph PD 5001 Mode D'emploi

9.3.7. Interval metering

Interval metering is a sub-routine of metering by volume mode; repetition is not launched by
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hitting a key, or by a triggering pulse, but automatically after a pause selected before.
Set volume as described under 10.3.5, metering by volume.
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Hold Select-key (36) depressed until „Pause sec/min/h" LED lights.
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Enter pause with arrow keys (35); choose pause between 0.1 seconds and 750 hours.
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seconds range: display 0.1 to 599.9 (no extra signal displayed)
minutes range: display 10 to 599, „' " displayed(600sec= 10min)
hours range: display 10 to 750 „h" displayed (600min=10Std.)
Hold select key (36) depressed until „Vol ml" LED and LED „Pause sec/min/h" LED light the
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same time.
Interval metering is controlled with the „Start Stop" key (32) or via the interface.
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After having hit the „Start Stop" key (32) the metered volume is displayed (41), rising from
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zero to the current value, or a pause interval rising from zero the value s et before. The
respective LED is going to flash.
9.3.8. Adjust backstroke for metering by volume mode (figs. 49)
To avoid dripping in the "metering by volume" mode, a short backstroke of the pump may be
programmed.
Turn power switch (29) OFF. Hit „Cal" key (34), and, while holding depressed, turn power
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switch (29) ON.
Pump head, e.g. "Pu 1" is displayed (41).
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Hit arrow keys (35) until „r on" or „r of" is displayed (41).
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„r on" turns backstroke ON, „r off" turns backstroke OFF.
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Confirm mode with select key (36).
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9.4. Interfaces (fig. 50)

9.4.1. Analog interface

An analog interface connector (37) is installed in the item's rear panel.
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External pump control uses this analog interface.
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Control voltage of 0 - 10 volts equals rotational speed between 0 and max.
control voltage
0 - 0.9 V
1 V
10 V
Control current 4 - 20 mA equals rotational speed between 0 and max.
control current
0 - 4.9 mA
5 mA
20 mA
PD 5201
0 [1/min]
5 [1/min]
120 [1/min]
PD 5201
0 [1/min]
5 [1/min]
120 [1/min]
65
PD 5206
0 [1/min]
24 [1/min]
606 [1/min]
PD 5206
0 [1/min]
24 [1/min]
606 [1/min]
IEI