FIELD: monitoring and measurement equipment.SUBSTANCE: group of inventions refers to the field of control and measurement systems for measuring the analyte in the blood. Analyte measuring device includes a port connector for the test strip, an input stage circuit electrically connected to the analytical test strip and comprising an operational amplifier, a microcontroller and a test strip detection signal line connected to the power supply and ground source, wherein the ground connection is made through the inserted test strip and through the output node of the operational amplifier. Measuring device is also disclosed comprising a ground-connected working electrode circuit when a test strip is inserted into the test strip connector port and a control method of the instrumentation.EFFECT: group of inventions provides for the implementation of a more efficient test strip detection circuit, which does not require the use of devices that are inherently current leaky.19 cl, 6 dwg
