Signet 2250 Hydrostatic Level Sensor

Signet 2250 Hydrostatic Level Sensor

The Signet 2250 Hydrostatic Level Sensor for level and depth control has a one-piece injection molded PVDF body and ceramic diaphragm for superior compatibility in corrosive liquids. Utilizing hydrostatic pressure, the 2250 disregards false level signals from steam vapors, foam or any other debris on the liquid surface. Two pressure ranges allow for optimal resolution matched to your sensing needs. Solid state circuitry eliminates drift (no internal potentiometers).

These sensors are available with a proprietary digital (S3 L) output, or 4 to 20 mA output. The extended cable and capillary tubing with the union connection and a customer supplied conduit, allow submersion in process vessels.



  • Level and depth measurement
  • 4 to 20 mA or digital (S3 L) output
  • Flush ceramic diaphragm
  • Easy submersible installation
  • Choice of two pressure ranges
  • Standard union connection and extended cable and capillary tubing (10 m)


  • Inventory Management
  • Storage Tank Monitoring
  • Neutralization Tanks
  • Plating Lines
  • Waste Sumps
  • Clarifiers
  • Overflow Protection


OutputDigital (S3L) or 4 to 20 mA
Repeatability for all pressure ranges±0.5% of full scale @ 25 °C
Resolution-XU0.001 psi
-XL0.01 psi
Response Time< 100 ms
Wetted Materials
Union and Union BushingPVC-U
Sensor HousingPVDF
Diaphragm SealFKM
Power Requirements 
 Digital (S3L)to 6.5 VDC <1.5 mA (power supplied by the 8900, 9900, 9950 and 0486)
to 20 mAto 24 VDC ±10%, regulated
Cable Lengthm (32.8 ft)
Cable Typecond. plus shield, 22 AWG, PVC jacketed, Blk/Red/White/Shld with capillary tube
Digital (S3L) OutputSerial ASCII, TTL level 9600 bps.
 Reverse polarity and short circuit protected.
to 20 mA Output 
Accuracy±32 µA
Resolution< 5 µA
Spanto 20 mA factory calibrated to operating ranges shown below
Maximum Loop ImpedanceΩ @ 12 V
Ω @ 18 V
Ω @ 24 V
Maximum Temperature/Pressure Rating
Operating Temperature-15 ˚C to 85 ˚C 
Storage Temperature-20 ˚C to 100 ˚C 
Operating Pressure-XU:  0 to 0.7 bar (0 to 10 psig)
-XL:  0 to 3.4 bar (0 to 50 psig)
Proof Pressure-XU:  1.4 bar (20 psig)
-XL:  5.2 bar (75 psig)
Shipping Weight
 0.560 kg 
Standards and Approvals
RoHS compliant, China RoHS
Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management and OHSAS 18001 for Occupational Health and Safety

Download Datasheet: Signet 2250 Hydrostatic Level Sensor


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