Dispensing device

1. A dispensing device comprising:

a syringe configured to draw in or discharge a fluid;

a first pump configured to generate a pressure to draw the fluid into the syringe;

a second pump configured to generate a pressure to discharge the fluid in the syringe;

a flowmeter disposed on a flow path between the syringe and the first pump or the second pump; and

a control circuit configured to correct a plurality of initial driving voltages for the first pump by:

calculating a first ratio of, with respect to a driving voltage for the first pump associated in advance with a first target flow rate in a case where the syringe draws in a first fluid as the fluid, a driving voltage for the first pump when the flowmeter measures a flow rate corresponding to the first target flow rate in a case where the syringe draws in the first fluid, and

multiplying, by the first ratio, the plurality of initial driving voltages for the first pump respectively associated in advance with a plurality of first target flow rates in a case where the syringe draws in a second fluid as the fluid.

2. The dispensing device according to claim 1 , wherein:

the control circuit is further configured to correct a plurality of initial driving voltages for the second pump by:

calculating a second ratio of, with respect to a driving voltage for the second pump associated in advance with a second target flow rate in a case where the syringe discharges the first fluid, a driving voltage for the second pump when the flowmeter measures a flow rate corresponding to the second target flow rate in a case where the syringe discharges the first fluid, and

multiplying, by the second ratio, the plurality of initial driving voltages for the second pump respectively associated in advance with a plurality of second target flow rates in a case where the syringe discharges the second fluid.

3. The dispensing device according to claim 2 , further comprising: a storage for storing:

information of the plurality of initial driving voltages for the first pump respectively associated in advance with the plurality of first target flow rates in the case where the syringe draws in the second fluid;

corrected information of the plurality of initial driving voltages for the first pump;

information of the plurality of initial driving voltages for the second pump respectively associated in advance with the plurality of second target flow rates in the case where the syringe discharges the second fluid; and

corrected information of the plurality of initial driving voltages for the second pump, wherein

the second fluid is a same fluid as the first fluid.

4. The dispensing device according to claim 2 , further comprising: a storage for storing:

information of the plurality of initial driving voltages for the first pump respectively associated in advance with the plurality of first target flow rates in the case where the syringe draws in the second fluid;

corrected information of the plurality of initial driving voltages for the first pump;

information of the plurality of initial driving voltages for the second pump respectively associated in advance with the plurality of second target flow rates in the case where the syringe discharges the second fluid;

corrected information of the plurality of initial driving voltages for the second pump;

information of the driving voltage for the first pump associated in advance with the first target flow rate in the case where the syringe draws in the first fluid; and

information of the driving voltage for the second pump associated in advance with the second target flow rate in the case where the syringe discharges the first fluid, wherein:

the second fluid is a fluid different from the first fluid,

the control circuit is configured to correct the plurality of initial driving voltages for the first pump, by calculating the first ratio of, with respect to the driving voltage for the first pump that is information stored in the storage, the driving voltage for the first pump when the flowmeter measures the flow rate corresponding to the first target flow rate in the case where the syringe draws in the first fluid, and multiplying, by the first ratio, the plurality of initial driving voltages for the first pump that is information stored in the storage, and

the control circuit is configured to correct the plurality of initial driving voltages for the second pump, by calculating the second ratio of, with respect to the driving voltage for the second pump that is information stored in the storage, the driving voltage for the second pump when the flowmeter measures the flow rate corresponding to the second target flow rate in the case where the syringe discharges the first fluid, and multiplying, by the second ratio, the plurality of initial driving voltages for the second pump that is information stored in the storage.

5. The dispensing device according to claim 2 , wherein:

the control circuit is further configured to:

determine whether or not the first ratio is equal to or greater than a first predetermined ratio set in advance with respect to the first pump;

determine whether or not the second ratio is equal to or greater than a second predetermined ratio set in advance with respect to the second pump;

output, when the first ratio is equal to or greater than the first predetermined ratio, a first signal indicative of timing for maintenance of the first pump; and

output, when the second ratio is equal to or greater than the second predetermined ratio, a second signal indicative of timing for maintenance of the second pump.

6. The dispensing device according to claim 1 , wherein:

the control circuit includes a microcomputer and a storage storing a program,

the program, when executed by the microcomputer, causes the control circuit to correct the plurality of initial driving voltages for the first pump.