Таблица перевода единиц измерения давления

Единицы бар мм рт.ст. мм вод.ст. атм (физич.) кгс/м2 кгс/см2 (технич. атм.)
Па кПа Мпа
1 бар 1 750.064 10197,16 0.986923 10.1972 ∙ 103 1,01972 105 100 0.1
1 мм рт.ст. 1.33322 ∙10-3 1 13,5951 1.31579 ∙10-3 13,5951 13.5951 ∙10-3 133.322 133.322 ∙10-3 133.322 ∙10-6
1 мм вод.ст. 98.0665 ∙10-6 73.5561 ∙ 10 -3 1 96.7841 ∙10-6 1 0.1∙10-3 9.80665 9.80665 ∙10-3 9.80665 ∙10-6
1 атм 1.01325 760 10.3323 ∙103 1 10.3323∙ 103 1.03323 101.325 ∙ 103 101.325 101.325 ∙10-3
1 кгс/м2 98,0665 ∙10-6 73.5561 ∙ 10 -3 1 96.7841 ∙10-6 1 0.1∙10-3 9.80665 9.80665 ∙10 -3 9.80665 ∙10-6
1 кгс/см2 0,980665 735.561 10000 0.967841 10000 1 98.0665 ∙ 103 98.0665 98.0665 ∙10-3
1 Па 10 -5 7.50064 ∙10-3 0,1019716 9.86923  ∙10-6 101.972 ∙ 10-3 10.1972 ∙10-6 1 10 -3 10 -6
1 кПа 0.01 7.50064 101,9716 9.86923 ∙10-3 101.972 10.1972 ∙10-3 103 1 10 -3
1 МПа 10 7.50064 ∙103 101971,6 9.86923 101.972 ∙103 10.1972 106 103 1

К системе СИ относятся:                    Инженерные единицы:
Бар

1 бар = 0,1 Мпа                              1 мм рт.ст. = 13.6 мм вод.ст.
1 бар = 10197.16 кгс/м2                  1 мм вод.ст. = 0.0001кгс/см2
1 бар = 10 Н/см2                                      1 мм вод.ст. = 1 кгс/м2
                                                                       1 атм = 101.325 ∙ 10Па
Па

1 Па = 1000МПа
1 МПа = 7500 мм. рт. ст.
1 МПа = 106 Н/м2

Two-channel frequency recorderTwo-channel frequency recorder. The recorder is designed for recording frequency from pressure transducers and (or) quartz temperature with frequency output in the range of absolute pressures from 0.0007 to 80 MPa and (or) temperatures from -60 to 250 °С.

Application area

The recorder is designed for recording frequency from pressure transducers and (or) quartz temperature with frequency output in the range of absolute pressures from 0.0007 to 80 MPa and (or) temperatures from -60 to 250 °С.
Together with the pressure converter, PDK-P-M(P)T forms a measuring device for recording pressure and temperature with the following possibilities:

  • display of the results - pressure and temperature, on the indicator;
  • input of coefficients of the conversion function by means of software when connecting the recorder to PC via the USB interface;
  • transfer of results to PC via the USB interface.

 

Characteristics

Range of measured frequencies, Hz

100 .. 50000

Limit of permissible error in frequency measurement in the operating temperature range, Hz

 ±0,04

Resolution, Hz

0,005

Connectable devices

Pressure and temperature converters with frequency output, produced by SKTB ElPa and KB Quartzens

Quantity of channels, pcs.

2

Input waveform

meander

Parameters of input signal

 

- input low voltage, not more than, V

0,4 (0,1)

- high-level input voltage, not more than, V

5,5 (3,2)

 - the maximum value of the input voltage,
perceived as a logical "0" level, V

0,8 (1,5)

- minimum value of input voltage,
perceived as the level of logical "1", V

2,0 (2,3)

- delay time when switching logic
levels, not less than, ns

6

Channel polling time

user-configurable

- minimum, s

0,05

- maximum, s

5

Supply voltage of the device, V

+5

Power source

external (included)

Power Supply Input Voltage

220V±10%, 50Hz

Oscillator of reference frequency 16 MHz

internal thermocompensated

Connecting of the reference oscillator to an external frequency counter

yes

Precision frequency adjustment of the reference oscillator

yes

Connection to PC (USB interface) + software

yes

Mean time between failures at least, hours

2500

Average service life, not less than, years

3

Overall dimensions, no more than, mm        

125×85×27

Weight, not more than, kg                              

0,2

ADDITIONAL FEATURES: 

 

Wireless connection to mobile device (Bluetooth)

Customer requirement

Accumulation of results in nonvolatile memory (SD card slot)

Customer requirement

PC software

The software is Windows application. When connecting the frequency recorder to PC, the software provides the user with the opportunity to:

  • to set up the parameters of the recorder's operation (time synchronization, reference quartz frequency setting, etc.);
  • enter and correct the coefficients of the conversion function connected to the transducer of the converter;
  • in real time to monitor the measured values ​​with the ability to graphically represent the result and continuous recording in file.

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