HME Calibrator - for HME moisture loss measuring instrument Shanghai Chengsi

The HME calibrator housing contains 81 polyvinyl chloride (PVC) lines arranged 9×9, each with an inner diameter of 2 mm and an outer diameter of 4 mm, and a length of 50 MM Test condition 1 The air delivered from the air delivery system to the HME should be 23°C±1°C with a moisture content of not more than 1 mg/L
.

The HME shall be tested
under the conditions specified in Table 2, i.
e.
within the operating range of the HME specified by the manufacturer.

If the tidal volume is greater than 1 L, proceed at the maximum tidal volume recommended by the manufacturer and employ a respiratory rate of 10 times/rain, f: 6.
2.
4 Step 1 connects
the moisture generator (HG) with a bidirectional air flow generator.

2 Adjust the bidirectional airflow generator, measured at the machine port of the HME, to obtain the test conditions
specified in Table 2 and within the operating range of the HME specified by the manufacturer.

Adjust the air flow carried by the air conveying system so that it is greater than 1 times but less than 1.
5 times the peak suction flow at
the end of the suction HME machine.

3 With the same type of HME as the test HME, operate the test instrument at a water bath temperature of 37 ° C 4-0.
5 ° C and an air temperature of 37 ° C ± 1 ° C in the insulation box for at least 1 h
.

This temperature
is maintained during this test.

4 Confirm that the volume of air flowing out of the machine port of the HME is required for the test conditions selected in
Table 2.

5 Only the quality of the HG is recorded (i.
e.
, excluding HME) (mo
).

6 Replace the HME with a test HME and operate the test instrument 60 rain4-5 rain
.

7 Only the quality of the HG is recorded (i.
e.
, excluding HME) (m1
).

8 Continuous operation of the test instrument to the maximum time
recommended by the manufacturer.

9 Only the quality of the HG is recorded (i.
e.
, excluding HME) (mz
).

10 confirms that the volume of air flowing out of the machine port of the HME is required for the test conditions selected in
Table 2.