VACUUBRAND DVR 3 - Manual (Page 7)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual: 999072 / 12/01/2011
page 7 of 18
Technische Änderungen vorbehalten!
Type DVR 3
Measuring principle
capacitive, absolute pressure,
gas type independent
Pressure transducer ceramic diaphragm (alumina)
Pressure reading analogue and digital LCD display
Pressure units mbar, Torr or hPa (selectable)
Measuring cycle
automatic, once in 3s, once in 1s, three times in
1s (factory-set: automatic)
Automatic sleep mode
operation time: 1-1000 minutes or continuous
operation (”On”), (factory-set: 15 minutes)
Measuring range (absolute) 1080 mbar - 1 mbar (810 Torr - 1 Torr)
Maximum permissible pressure at pressure
transducer
1.5 bar absolute
Measurement uncertainty (absolute) after careful
adjustment and at constant temperature
< ±1 mbar (0.75 Torr) /
±1 digit
Temperature coefficient < ±0.07 mbar/K (0.05 Torr/K)
Maximum permissible temperature of gaseous
media at pressure transducer
continuous operation: 40°C,
for short periods (< 5 minutes): up to 80°C
Ambient temperature range (operation) 10°C to +40°C
Ambient temperature range (storage) -10°C to +60°C
Permitted relative atmospheric moisture during
operation (no condensation)
30% to 85%
Degree of protection according to IEC 529 IP 40
Ex proof classification II 2 G Ex ia IIC T4, for use in zone 1
Vacuum connection
small flange KF DN 16 and screw-in hose nozzle
DN 6/10 mm
Power supply BVE 9V, PTB 98 ATEX 2206, II 2 G Ex ia IIC T5
Weight approx. 430 g
Dimensions L x W x H 116 mm x 116 mm x 66 mm
Technical data
Wetted parts
Components Wetted materials
Sensor Aluminium oxide ceramic
Sensor housing stainless steel
Seals chemically resistant fluoroelastomer
Vacuum connection / hose nozzle PBT / PPS glass fibre reinforced