Test for thermal shock PDTK-80-MS23

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 In Fig. 2 is a graph of the test results quartz pressure transducer with mathematical temperature compensated readings of temperature-sensitive resonator, which is located in the transmitter housing. The test was conducted in the Company "SKTB ELPA" December 12, 2007.

 Converter PDTK-80,0-MS23 (with an upper limit of measurement 800 kgf/cm2) was placed in the tube (see Fig. 1), the upper part of the pipe was plugged insulation material.

 

Труба рис.1

рис. 1

Transducer assembly with the pipe (hereinafter converter) was cooled to 0 ° C, then placed in an incubator, which had a flow temperature of 70 ° C. For the control of temperature in the thermostat was set reference quartz thermometer PTK-0,05-3 (see Fig. 3). To control the air pressure on the table was set pressure transducer and temperature quartz PDTK 0,1-2-R with an upper limit of measurement 800 mm Hg (1.0876 kg/cm2) and the basic reduced error of <0.06% FS. 
Poll each channel inverter is - every 10 seconds.
At the time of thermal shock, a sharp change in the frequency of the resonator barochuvstvitelnogo, based on the pressure of the order - 7 ... 9 kgf / cm2
Further as a result of heating and temperature compensation after 240 seconds. transducer readings are restored with an error of 0.2 kgf/cm2 (0.03% of full scale), and after 500 sec. With an accuracy of 0.02 kg/cm2. (0.003% of full scale).

рис. 2Fig. 2

 

рис. 3

Fig. 3