PTFE Submersible Level Transmitter


The Tek-Sub 4800A PTFE Submersible Level Transmitter has been designed for continuous submersion in aggressive fluids. This submersible device uses a rugged ceramic pressure sensor encased in PTFE housing that provides excellent corrosion resistance in most fluids. It facilitates simple installation, easy cleaning and years of trouble-free service with almost no maintenance. The device guarantees stability and reliability in harsh environments.The Tek-Sub 4800A operates on 12-36 VDC power. Available outputs are 4-20 mA, 0.5-4.5 VDC or RS-485.

  • Ceramic pressure  sensor  design with PTFE  housing
  • Temperature  Compensated
  • Fully Submersible
  • Corrosion Resistant
  • Long-term stability
  • Measuring pressure ranges  from 2.8 psi to 15 psi.
  • Accuracy ±0.5% F.S.
Pressure Range 2.8 psig to 15 psig (2 mH2O to 10.5 mH2O), Optional ranges available
Pressure Type Gauge
Over Pressure 150% “Of Span” or
Accuracy ±0.5% FS (max.)
Temperature Coeffitient-Zero ±0.011% FS/oF, ±0.016% FS/oF
Temperature Coeffitient-Span ±0.011% FS/oF, ±0.016% FS/oF
Long Term Stability ±0.2% FS/year (typ.), ±0.3% FS/year (max.)
Output Signal 4 to 20 mA, RS-485, 0.5 to 4.5 VDC
Power Supply (Vs) 12 to 36 VDC
Load Resistance (RL) For voltage output: RL≥10 kΩ
Maximum Current Consumption 4 to 20 mA: 22.8 mA
0.5 to 4.5 VDC: 2 mA
RS-485: 6 mA
Response Time ≤ 10 ms
Vibration 10g-force (20-2000 Hz)
Shock 100g-force (10 ms)
Insulation Resistance 100 MΩ/50 VDC
Compensated Temperature Range PTFE: 32 °F to 140 °F (0 °C to 60 °C)
Operating Temperature Range PTFE: -20 °F to 160 °F (-29 °C to 71°C)
Storage Temperature Range -40 °F to 257 °F (-40 °C to 125 °C)
Maximum Specific Gravity 2.2
Housing PTFE
Cable PTFE or Polyurethane
Diaphragm Ceramic (AI2O3, 96%)
O-ring FKM (Flourine rubber)
Net Weight 0.91lb (412 g)
4800A Model Chart
water industry

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