hydrotechnik

Turbine volume flow sensor with increased IP protection
hydrotechnik in china
Turbine volume flow sensor RE4 data download
hydrotechnik flow sensor advantages at a glance
• Ideally suited for use with mineral oil and HFA-/HFC-liquids,skydrol, water etc.
• Integrated test points for acquiring pressure and temperature measurements
• Small physical dimensions, high pressure capability
• Installation in any position, reverse flow operation
• Low operational noise, high level of reproducibility
• Improved accuracy through linearization feature with the corresponding evaluative instrumentation from within our product range
• Measuring range expandable through linearization feature

Hydrotechnik flow sensor qualities

Measuring principle volume fl ow
Viscosity range 1-270mm²/s (cSt)
Medium temperature max. +120 °C
Environmental temperature -20 ... +85 °C
Storage temperature -20 ... +85 °C
Output signal frequency (rectangle) / 4 ... 20 mA
Supply voltage Ub 12 ... 24 VDC
Electrical measuring connector device connector 3 pole AMP, acc. to DIN 72585
Protection type (EN 60529 / IEC 529) IP 69
Tightening torque 10 Nm (± 2 Nm)
Calibration viscosity 30 mm²/s (cSt)
Material turbine casing Aluminium AlZnMgCu 1,5
Material turbine wheel 1.4122 (for measuring range 1.0 ... 10 l/min)
1.0718 (for all other measuring ranges)
Material sealings FKM
Material sensor casing 1.4301
Suitable measuring cable customer-specific
measuring range Error limit* L SW G
l/min   mm    
1.0 ... 10.0 ± 2.5 120 41 ISO 228-G¼
7.5 ... 75.0 130 46 ISO 228-G3/4
15 ... 300 150 55 ISO 228-G1
25 ... 600 ± 2.0 174 60 ISO 228-G1¼
Hydrotechnik Turbine volume flow sensor Electrical connections
Pin assignment 4 ... 20 mA
Pin 1 = signal +
Pin 2 = signal – / GND
Pin 3 = + Ub
Hydrotechnik Turbine volume flow sensor Orders
Measuring
range
Allowed working
pressure
Viscosity
range
Error limit* Order number / weight
l/min bar MPa mm²/s (cSt)   frequency weight (g)
1.0...10.0 (RE4-10) 420 42 1 ... 60 ± 2.5 %

31N7-01-35.030

681
7.5...75.0 (RE4-75) 1 ... 100 ± 2.5 % 31N7-70-35.030 869
15...300 (RE4-300) 1 ... 100 ± 2.5 % 31N7-71-35.030
1,206
25...600 (RE4-600) 350 35 1 ... 100 ± 2.0 % 31N7-72-35.030 1,498