Metrohm 709 IC Pump - Manual (Page 28)

3 Operation
709 IC Pump
20
3.2 Flow rate
The flow rate can be set in the range of 0.05 … 5.00 mL/min with the
pump drive switched on or off as follows:
1 Select "FLOW"
Press key 4 until the "FLOW" LED 10 lights up. 2 Set flow rate Press < ↓ > key 5 or < ↑ > key 6 until the desired flow rate (in mL/min) appears in display 1. 3 Store flow rate Release < ↓ > key 5 or < ↑ > key 6: the value shown in display 1 at the time of release will be stored. 3.3 Flow correction Since the difference between displayed and actual flow rate can be maximum 3 % owing to unavoidable tolerances in the manufacture of mechanical parts, there is a possibility to adjust the 709 IC Pump after installation of a new pump head. For this, a correction factor of 0.9…1.1 can be entered in the 709 IC Pump. The correction factor is determined by measurement of the actual flow rate with the aid of a measuring cylinder: Correction factor = Displayed flow rate (in mL/min) Measured flow rate (in mL/min) In the entry of the correction factor, proceed as follows: 1 Select flow correction Press key 4 for ca. 3 s until all LEDs (10...13) go out
2 Set flow rate
Press < ↓ > key 5 or < ↑ > key 6 until the desired flow rate (in
mL/min) appears in display 1.
3 Store flow rate
Release < ↓ > key 5 or < ↑ > key 6: the value shown in display
1 at the time of release will be stored.
3.3 Flow correction
Since the difference between displayed and actual flow rate can be
maximum 3 % owing to unavoidable tolerances in the manufacture of
mechanical parts, there is a possibility to adjust the 709 IC Pump after
installation of a new pump head. For this, a correction factor of 0.9 … 1.1
can be entered in the 709 IC Pump.
The correction factor is determined by measurement of the actual flow
rate with the aid of a measuring cylinder:
Correction factor =
Displayed flow rate (in mL/min)
Measured flow rate (in mL/min)
In the entry of the correction factor, proceed as follows:
1 Select flow correction
Press
and the correction factor appears in display 1.
2 Set flow correction
Press < ↓ > key 5 or < ↑ > key 6 until the desired flow correc-
tion appears in display 1.
3 Store flow correction
Release < ↓ > key 5 or < ↑ > key 6: the value shown in display
1 at the time of release will be stored.
4 Return to standby mode
Press key 4 briefly, the pump is again in the standby mode. Pages: 1 … 26 27 28 29 30 … 70 wrong Brand wrong Model non readable See also other documents in the category Metrohm Pumps: 872 Extension Module IC Pump (79 pages) 818 IC Pump (56 pages) 823 Membrane Pump Unit (38 pages) 772 Pump Unit (46 pages) 752 Pump Unit (29 pages) 843 Pump Station with peristaltic pump (56 pages) 843 Pump Station with membrane pump (47 pages) Sitemap
standby mode.