Huba Pressure level transmitter 681

 Mechanically protected diaphragm due
 to special head design Supplementary weight (option) improves
 stabilization of sensor in turbulent media Effective overload protection due to
 chemically etched chip diaphragm and
 specially designed glass gland Compact construction using SMD          
 technology, enhances operational
 reliability in the  presence of shock and
 vibration Welded construction provides 100%
 sealing against media

Technical overview
1)
Pressure ranges
Relative     0 ... 25 bar
Absolute     optional available
Overload
3x pressure range, min. 3 bar
Rupture pressure    
> 200 bar
Medium
Permissible medium   according order code selection table (other medium on request)
Material
   Stainless steel 1.4435 (316L)
Diaphragm, case 
     Titan
Sealing material    FPM (other at request)
Cable     PUR, PE oder teflon
2)
Temperature
Medium temperature      -5 ... +80 ¨¤
3) 4)  5)
Output and power supply    output power supply permissible load
   0 ...   5 V 12 ... 30 VDC  > 10 kOhm
3 wire
   0 ... 10 V 12 ... 30 VDC > 10 kOhm
supply voltage  - 9V
2 wire   4 ... 20 mA   9 ... 33 VDC
 [Ohm] max.
0.02 A
supply voltage  - 9V
2 wire (Ex)   4 ... 20 mA   9 ... 28 VDC   [Ohm] max.
0.02 A
Ex-version    gas dust
Ex-Admission    II 1G Ex ia IIB/IIC T3 ... T6 II 1D Ex iaD 20 IP6x T145 ... T70 ¨¤
Standards    EN 60079-0 / EN 60079-11 EN 61241-0 / EN 61241-11
Temperature class Ex-version   T6 T4
Medium temperature   -5 ... +50 ¨¤C -5 ... +80 ¨
Electrical connection
Cable     PUR, PE or teflon (In variable lengths)
Tests / Admissions norm character  level
  EN 60068-2-6 vibration  10 g (4 ... 2000 Hz, oscillation  10 mmpp)
Mechanical load
  EN 60068-2-27 shock  100 g (pulse duration 6 ms)
Interference emit EN 55022 emitted interference, class B < 30 dB?V/m (0.03 ... 1 GHz)
 EN 61000-4-2  discharge static electricity 8 kV contact-, 15 kV air discharge
  EN 61000-4-3 electromagnetic radiation 10 V/m, 0.08 ... 2.7 GHz, 80% AM 1 kHz, 3 s
  EN 61000-4-4 fast transients (burst)  4 kV
Interference resitance
  EN 61000-4-5 impulse voltage (surge) 
Line-Line 0.5 kV/42 Ohm, Line-Earth 1 kV/42 Ohm
  EN 61000-4-6 grid-bound electromagnetic blockage  10 V, 0.15 ... 80 MHz, 80% AM 1 kHz, 3 s
Packaging
Single packaging    carton padded cellular material
Weight
Without supplementary weight (without cable)   ~ 145 g
With supplementary weight (without cable)   ~ 405 g
Cable     ~ 50 g/m
 

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