INCUBATION APPARATUS
An incubation apparatus is provided to incubate culture targets such as cells, embryos or microorganisms in an incubation chamber. The incubation apparatus is capable of inexpensively, highly accurately and automatically calibrating a gas concentration sensor. The incubation apparatus includes a gas concentration sensor 42 which detects a gas concentration in the incubation chamber 4, control means (controller 70 ) for controlling the supply of a gas into the incubation chamber on the basis of an output of the gas concentration sensor 42, and standard gas supply means for supplying the gas concentration sensor 42 with a standard gas which has been previously adjusted to an actually used gas concentration or a gas concentration close thereto. The control means (controller 70 ) maintains the concentration of the standard gas, supplies the standard gas to the gas concentration sensor 42 by the standard gas supply means, and on the basis of an output of the gas concentration sensor 42 and the concentration of the standard gas at the moment, calibrates the actually used gas concentration of the gas concentration sensor 42.
1 . An incubation apparatus to incubate culture targets such as cells, embryos or microorganisms in an incubation chamber, the incubation apparatus including:
a gas concentration sensor which detects a gas concentration in the incubation chamber;
control means for controlling the supply of a gas into the incubation chamber on the basis of an output of the gas concentration sensor; and
standard gas supply means for supplying the gas concentration sensor with a standard gas which has been previously adjusted to an actually used gas concentration or a gas concentration close thereto,
wherein the control means maintains the concentration of the standard gas, supplies the standard gas to the gas concentration sensor by the standard gas supply means, and on the basis of an output of the gas concentration sensor and the concentration of the standard gas at the moment, calibrates the actually used gas concentration of the gas concentration sensor.
2 . The incubation apparatus according to claim 1 , further including
outside air supply means for supplying outside air to the gas concentration sensor,
wherein the control means supplies the outside air to the gas concentration sensor by the outside air supply means, and on the basis of an output of the gas concentration sensor at the moment, performs zero-point calibration of the gas concentration sensor.
3 . The incubation apparatus according to claim 1 or 2 , further including a detachable cylinder in which the standard gas is hermetically contained, the standard gas being supplied from the cylinder to the gas concentration sensor.
4 . The incubation apparatus according to claim 1 or 2 , further including a connection opening to connect a pipe which supplies the standard gas to the gas concentration sensor.
5 . The incubation apparatus according to claim 1 or 2 , wherein the control means calibrates the actually used gas concentration at preset time intervals.