D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 5 Pump Maintenance & Repair
5.11 Calibration It should not be necessary to readjust the instrument unless
repairs have been made on the electronic circuitry or the controller
cable length has been changed.
Only pump A must be adjusted.
5.11.1 +5 Volts Adjustment
(on A1 board)
The 5-volt adjustment is done in the pump unit, with the voltage
measured at the controller.
1. Connect a voltmeter to TP106 and to common TP134 (both
of which are located on the controller board).
2. Adjust R133 on the pump CBA until the voltage at TP106
reads 5.0 volts, ±0.002 V.
5.11.2 Pressure Transducer
Calibration for 65DM,
100D, 260D, 500D, and
1000D
5.11.3 Pressure Transducer
Calibration for 65D
This adjustment is done on the pressure preamp board on top of
the cylinder. The A0 portion of the schematic details this board.
To access this board, remove the amplifier cover at the top of the
pump. Connect a valve with inlet tubing and a 10 micron filter to
one port of the pump. Connect a pressure gauge with a precision
of 0.25% accuracy to the second pump port. Both the valve and
the gauge must be rated above the maximum pressure of the
pump.
Then, do the following:
1. Fill the pump with fluid.
2. With the fittings in both ports tight and the valve open,
adjust R61 (offset) on the pressure preamp board for 0.000,
±0.050 V at TP52, with respect to TP51.
3. Press ZERO PRESS and close the inlet valve.
4. Put the pump in constant pressure mode. Enter a pressure
setpoint of 69 bar, then press the RUN key.
5. When the pressure is stable, adjust R53 (gain) so that the
pressure gauge reads 69, ±3 bar.
6. Enter the maximum pressure.
7. When the pressure is stable, adjust R53 to match the pressure
gauge reading to the pressure setpoint, to within 1.7
bar.
The 65D pump requires a different calibration procedure than
that of the other models. This procedure requires a #2 Phillips
screwdriver, a small, flat screwdriver, and a voltmeter.
1. Connect an external pressure gauge to the system.
2. Perform a system reset and hard reset on the controller
(refer to Section 3.3.4 Resetting the System) to clear any
zero offsets.
CAUTION
Once a system reset has taken place, all programs will be
erased. These cannot be recovered. All user-set limits and
units will be returned to the factory default settings.
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