suitable for pressure differences measuring in liquid media
simple handling
overpressure endurance
robust design
battery supply
signal damping
analogue output
DMU - digital pressure meter / digital manometr
Basic technical information of pressure transmitter
| Type | DMU01 | DMU1 | DMU10 | DMU100 | DMU1000 |
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| Measuring pressure range | ±100 Pa | ±1 kPa | ±10 kPa | -100 ÷ +100 kPa | 0 ÷ +1000 kPa |
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| Analogue output range | ±1,999 V | ±1,999 V | ±1,999 V | ±1,999 V | ±1,999 V |
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| Overpressure max. | 1 kPa | 10 kPa | 40 kPa | 200 kPa | 2000 kPa |
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| Burst pressure | 20 kPa | 100 kPa | 100 kPa | 300 kPa | 2000 kPa |
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| Error | max. 1% ±2Pa | max. 1% | max. 1% | max. 1% | max. 1% |
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| Display * | 100.0 | 1.000 | 10.00 | 100.0 | 1000 |
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| Static pressure for P and T | max. 20 kPa | max. 100 kPa | max. 1 MPa | max. 1 MPa | max. 1 MPa |
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| Common mode pressure error | max. 1% | max. 1% | max. 1% | max. 1% | max. 1% |
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| Damping time constant | cca 5s |
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| Ambient temperature range | 0 ÷ +50°C (non condensing) |
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| Storage temperature | -5 ÷ 55°C |
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| Protection | IP 41 |
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| Supply | battery 9V |
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| Current consumption | max. 4mA |
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| Battery life | min. 50 hours of operation |
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| Outside dimensions | 145 x 85 x 35 mm |
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| Weight(with battery) | 290g, version T 500g |
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* valid for equipments calibrated in Pa or in kPa
EMC – dle ČSN EN 61326-1
At the customer´s wish it is possible to secure a metrological verification of the meters at an accredited Calibration Service Centre.
Instructions for use
- Before connection of the gauge into the pressure circuit, it is necessary to see that the device or external pressure probe range might correspond to the pressure being measured. As for the difference gauge, the user shall assure that a pressure that is higher than the allowed non-destructive pressure corresponding to the nominal range should not unilaterally overload the measurement diaphragm.
- This is the reason why a variant of the DMU-T gauge is manufactured, which is fitted with an integrated three-way apparatus with a ball valve. This valve will be opened during manipulation and connection of the pressure hoses (wing is parallel with the valve) and so the pressure difference will be minimized. After the high-pressure media delivery and stabilization, the gauge will be closed and there will be made measurements of the needed pressure differences. After completion of the measurement, the valve will be open again and afterwards the hoses will be disconnected from the pressure circuit. Negligence of this procedure may cause destruction of the measurement sensor!
- It is also necessary to verify whether the measured medium does not attack the materials used, i.e. silicon, duralumin, brass, plastic material polyetherimide and fluorsilicone seal (the same is valid for the external probe as well). These requirements are met for air, nitrogen, water, ethylalcohol, oil, etc.
