Basic technical information of pressure transmitter
Type
DMU01
DMU1
DMU10
DMU100
DMU1000
Measuring pressure range
±100 Pa
±1 kPa
±10 kPa
-100 ÷ +100 kPa
0 ÷ +1000 kPa
Analogue output range
±1,999 V
±1,999 V
±1,999 V
±1,999 V
±1,999 V
Overpressure max.
1 kPa
10 kPa
40 kPa
200 kPa
2000 kPa
Burst pressure
20 kPa
100 kPa
100 kPa
300 kPa
2000 kPa
Error
max. 1% ±2Pa
max. 1%
max. 1%
max. 1%
max. 1%
Display *
100.0
1.000
10.00
100.0
1000
Static pressure for P and T
max. 20 kPa
max. 100 kPa
max. 1 MPa
max. 1 MPa
max. 1 MPa
Common mode pressure error
max. 1%
max. 1%
max. 1%
max. 1%
max. 1%
Damping time constant
cca 5s
Ambient temperature range
0 ÷ +50°C (non condensing)
Storage temperature
-5 ÷ 55°C
Protection
IP 41
Supply
battery 9V
Current consumption
max. 4mA
Battery life
min. 50 hours of operation
Outside dimensions
145 x 85 x 35 mm
Weight(with battery)
290g, version T 500g
* 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.
EMC – dle ČSN EN 61326-1
