| 摘要 |
FIELD: physics. ^ SUBSTANCE: device has series-arranged radiation source 1, lens 16, diaphragm 3, stepper motor 8 with possibility of displacement of a hysteresis motor 15 with a rotating disc 13 perpendicular the optical axis and a computer controlled opaque diffuser 14, a gear wheel 12 on which there is a standard photometric head 4 and the inspected pulse metre 10 and a stepper motor 9 which produces rotational motion when the gear wheel receives an instruction from the computer. ^ EFFECT: smaller size and weight of the device, faster checking of pulse metres, automation of the checking process and calculating error of pulse metres. ^ 2 dwg |
