Huba Pressure sensor 691

The pressure transmitter of type 691 with unique and for the last 20 years used in millions of applications ceramic technology, features adjusted and amplified sensor signals which are available as standardized voltage or current outputs. Various application-specific pressure and electrical connections can be provided.

Very low temperature sensitivity
High resistance to extreme temperatures
No mechanical creepage
Individual applications due to modular system

Pressure range
Relative     -1 ... 0 ă 600 bar
Absolute     0 ... 0.1 ă 16 bar
Operating conditions
Medium      Liquids and gases
Temperature
1)
   
Medium / ambient
 -15 ... +80 ÀC
     -40 ... +80 ÀC (on request)
    Storage -40 ... +80 ÀC
Tolerable overload    2x fs (max. 1000 bar)
Rupture pressure    3x fs (max. 1200 bar)
Materials
Case     Aluminium
Materials in contact with the medium
  Pressure connection Stainless steel 1.4305 / AISI 303 or PVDF
    Sensor Ceramik Al2O3 (96%)
    Sealing material FPM, EPDM, NBR, MVQ
Electrical overview
  Output Power supply Load  Current consumption
2 wire  4 ... 20 mA 11 ... 33 VDC <
supply voltage - 11 V
 [Ohm] < 20 mA
3 wire
 0 ...   5 V 11 ... 33 VDC / 24 VAC μ15 % >10 kOhm / < 100 nF < 5 mA
  0 ... 10 V 18 ... 33 VDC / 24 VAC μ15 % >10 kOhm / < 100 nF < 5 mA
Polarity reversal protection Short circuit proof and protected against polarity reversal. Each connection is protected against crossover up to max. supply voltage.
Dynamic response
Response time     < 5 ms
Load cycle     < 50 Hz
Protection standard      
With connector    IP 65
With cable
     IP 67
     IP 65
Electrical connection
Connector DIN EN 175301-803-A
Connector DIN EN 60130-9
Cable 1.5 m
Pressure connections
Inside thread
     G ¼
        
7
/16 -20 UNF (Schrader)
Outside thread
    G ⅛
     G ¼
     G ½
        
7
/16 -20 UNF
          ¼ -18 NPT
          ½ -14 NPT
Manometer
     G ¼ DIN EN 837
     G ½ DIN EN 837
Mounting instruction
Installation arrangement   Unrestricted  Recommend: Pressure connection downwards
Mounting     Bracket (accessories)
Tests / Admissions
Electromagnetic compatibility    CE conformity acc. EN 61326-2-3
Weight
With inside thread   G ¼,
7
/16 -20 UNF  ~ 200 g
With outside thread
   G ⅛,
7
/16 -20 UNF ~ 212 g
    G ¼, ¼ -18 NPT ~ 245 g
    G ½, ½ -18 NPT ~ 280 g

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