ST Series Submersible Pressure Transmitter

0-1 through 0-1,000 psi

High Stability Depth/Triple Seal Level Transmitter

Shallow or Deep Well Measurement

Designed for low cost of ownership

Dylix’s ST Series Submersible Pressure Transmitter is designed for low cost of ownership for level /depth measurement applications in shallow or deep wells. Key features of the ST is its long term stability, internal protection from lightning via dual gas discharge tubes, internal EMI/RFI filtering, double sealed cable exit and a maintenance free vent filter.

Manufactured for extended life cycles

Every ST Series is built using advanced manufacturing techniques to ensure the integrity of the waterproof seal. Triple sealing techniques are used and 100 % of all ST Series are submerged at our factory for at least 24 hours. Automated welding procedures and extreme environmental burn in, along with the internal protection against the harsh well conditions give Dylix’s customers the confidence of product reliability over time.

Low power / alternate materials available

From 0-5ft H2O through 0-1500ft H2O, the ST Series is available in either a 4-20 mA or 0-5 Vdc output signal. For remote or battery powered systems, a low power option is available from a 5 Vdc, 1.5 mA supply. To further enhance battery life, warm-up time is less than 3 mS. Other options include alternate materials of construction or Tefzel© cable.

Dylix’s Customer Service

Each ST series is delivered with a NIST traceable calibration certificate.

Standard Features:

  • Moisture Free/Maintenance Free Vent Filter
  • EMI/RFI filtering with lightning protection
  • Standard accuracy ± 0.5% FSO
  • Double sealed cable exit

Available Options:

  • ≤± 0.1% FSO Static Accuracy
  • Remote Zero/Span Controls with Cal
  • Digital Output
  • Intrinsically Safe

Product Specifications


Excitation 8-38 Vdc
ST2 0-5 Vdc*
ST3 4-20 mAdc
Zero Balance ≤±1% FSO
FSO Setting ≤±1% FSO
Resolution Infinite (+0.001% FSO usable)
Response Time < 5 mS
Insulation Resistance 1,000 M Ω @ 50 Vdc
Reverse Polarity Protected
Warm-up < 3 mS
Power Supply Effect ≤± 0.002% FSO per V input
EMI/RFI Internal Filtering
Short Circuit Protected Up to 40 Vdc
Lightning Protected Dual gas discharge tubes

* Options Available


Pressure Ranges 0-1 through 0-1000 psi
(Customer may specify any range/eng. unit)
(Absolute, Vacuum or Compound are available options)
Proof Pressure 2X Full Scale
Burst Pressure 5X Full Scale
Materials 316 SS & 17-4*
Pressure Port PVC Bullet Nose
Electrical Connector Submersible cable exit with 10ft vented polyurethane cable*
Dimensions Per outline below
Weight Nominal 10 oz. (excluding cable)


Compensated Temp Range 0 to 120º F
Operating Temp Range 0 to 200º F
Storage Temp Range -20 to 250º F


Static Accuracy ≤± 0.25% FSO* (BFSL, RSS)*
(Combined effects of non-linearity, hysteresis & repeatability)
Repeatability ≤± 0.1% FSO
Temperature Effects ≤± 1.5% FSO over comp range*
(Combined effects of Zero & FSO with reference at 70º F)
Long Term Stability ≤± 0.25% FSO per year

Standard Wiring

Model Output + Power - Power + Signal
ST2 0-5 (10) Vdc 3 wire Red/Pin 1/Pin A Black/Pin 2/Pin B Green/Pin 3/Pin C
ST3 4-20 mAdc 2 wire Red/Pin 1/Pin A Black/Pin 2/Pin B

**Dylix Corporation reserves the right to change specifications without prior notification. Please contact the factory for the latest revision.