Digital recorder Equipped with a variety of transmitters, in the chemical industry, metallurgy, iron and steel, machinery, petroleum, power generation, cement and other industrial and mining enterprises and research units, display records used for automatic measurement of the object to be measured, if with different types of additional devices, and can automatically adjust the object to be measured.

Two Main technical characteristics

1Work conditions: ambient temperature 0-50℃Relative temperature5-90%.

2Power supply: -220V 50Hz

3Shows basic error limit: not more than power drive ± 0.5%.

4To record basic error limit: not more than power drive ± 1%.

5Show difference: do not exceed the power drive0.25%.

6Record return: not more than power drive0.5%.

7Record total response time 1Second.

8, The upper and lower limit alarm /Control system. Manual setting: switch error ± 1%Relay point capacitance250V, 5V.

9Insulation strength: power —Signal power —, The signal —Are 20MΩJ.

10Insulation strength: power —Signal power —Uniform 1KV/Minutes, the signal —For the 500V/Here minutes.

11Profile dimension: 280×280×150mm Hole size: 260×260mm.

12, 6.5Kg

Third, the principle of

As shown in the figure, measured parameters are first converted into DC electrical signals that enter the signal module, linearization, differential amplifier 1VDC Or so, and then transferred to the following three loops,

First back into the system, by compared with the reference potentiometer output signal positive or negative deviations, and amplifier level drive arc motor movement, directly supporting records and reference new balance slip resistance

To form a quick response without any additional drive closed loop system. Servo circuit for speed feedback circuit further improved the quick properties

In order to achieve oscillation-free, noise-free, has no record of poor driving and fast features.

Second Circuit input to three and a half digital, digital liquid crystal display the input signal, the maximum display capacity is ± 1999.

The third circuit on the input to the next alarm system, the user manual on the implementation of the system, following lower limit alarm 2Shown when displaying the signal below the lower set point lower limit relay suction,

In order to achieve lower limit alarm, when the signal exceeds the upper limit set-point is displayed, then the upper limit the relay sucks and shuts, so as to achieve maximum alarm (upper and lower alarm with normally open and normally closed output characteristics of electric shock)

Digital recorder Types are shown in table1:

Digital recorder Series instrument number and measurement ranges are shown in table2: