Submersible Level Transmitter


The Tek-Sub 4800B Submersible Level Transmitter has a high-precision piezoresistive silicon sensor enclosed in stainless steel housing that offers accurate and reliable level measurement in wide applications. The device is equipped with a ventilation tube that automatically compensates for changes in atmospheric pressure above the tank. It is manufactured to provide lightning and surge protection to stand up in extreme conditions. The device has no moving parts and offers long-term service with virtually no maintenance required. The Tek-Sub 4800B is supplied with a DC 12 – 36 V power supply and provides an output signal of 4 – 20 mA, 0.5-4.5 DC or RS-485.

  • Standard submersible model
  • Piezoresistive pressure sensor in Stainless Steel housing
  • Excellent performance in challenging environment
  • Temperature Compensated
  • Vented to atmosphere for pressure reference
  • Measuring pressure ranges from 5 psig to 20 psig
  • Accuracy ±0.5% F.S.
Pressure Range5 psig to 20 psig (3.5 mH2O to 14 mH2O), Optional ranges available
Pressure TypeGauge (vented)
Over Pressure150% of span
Accuracy±0.5% FS
Temperature Coeffitient-Zero±0.75% FS (typ.), ±1.5% FS (max.) Over compensated temperature
Temperature Coeffitient-Span±0.75% FS (typ.), ±1.5% FS (max.) Over compensated temperature
Long Term Stability±0.2% FS/year (typ.), ±0.3% FS/year (max.)
Output Signal4-20 mA, RS-485, 0.5-4.5 VDC
Power Supply (Vs)12 to 36 VDC
Load Resistance (RL)RL<(Vs-12)/0.02A
Vibration10g-force (20-2000 Hz)
Shock100g-force (10 ms)
Cycles10×10⁶ cycles
Insulation Resistance100 MΩ/50 VDC
Compensated Temperature Range32 °F to 140 °F (0 °C to 60 °C)
Storage Temperature Range-40 °F to 257 °F (-40 °C to 125 °C)
Housing304 SS
CablePTFE or Polyurethane
Diaphragm316L SS
Seal RingViton
Oil FillingSilicone oil
Net Weight0.9 lbs (408 g)

water industry

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