Tavis Corporation
Tavis Corporation
3636 Highway 49 South
Mariposa, California 95338
Website: www.taviscorp.com

Toll Free: 800-842-6102
Phone: 209-966-2027
Fax: 209-966-3563
Email: applications@taviscorp.com
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Are you tasked with monitoring the liquid level in an open water reservoir, river, or in a closed or vented tanking system? Tavis transducers have been providing liquid level measurements for anything from wine fermentation tanks to remote lakes. Flush diaphragm models have been designed to bolt directly onto tank walls. Ported transducers are easily plumbed into manifolds and processing vats. Even submersible styles have been developed to reside directly in the liquid, whether an open water body or a down-hole well. Vent lines can be used to provide atmospheric or ullage pressure reference for very accurate liquid level data. Tavis Technical Bulletin #103 may be of interest to those looking for additional information on tank gauging and liquid level measurement.

High reliability liquid level measurements with Tavis transducers/transmitters have featured:
  • High corrosion resistance stainless steels and Inconels
  • Either 2- and 3-wire current loop (4-20 mA) outputs or 4-wire voltage outputs
  • Submersible configurations with vented reference ports
  • Liquid intrusion into a reference port will not damage the all-metallic welded gage
  • Underwater electrical/data cables
  • Small diameter, down-hole well capability
  • Self-clearing diaphragm ports for clog-free operation
  • Custom mounting provisions
Unit of Measure

General

Pressure Range1 N/A 0 - 5 M H2OD to 0 - 40 M H2OD

Proof Pressure

 N/A 200% FS

Burst Pressure

 N/A 500% FS

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 35 oz Nominal

Wetted Materials

 N/A 17-4 PH SST 321 CRES

Construction

 N/A TIG Welded Gage/Case, Brazed Vent Port Tube, Flush Diaphragm with Threaded Base Mounting Plate

Fittings / Ports

 N/A 7/16 - 20 UNF-2B per SAE/MS 16142 Vent Port, Flush Diaphragm with Slots at Base

Electrical

Input Voltage

 N/A 8 - 16 VDC

Output Signal

 N/A SDI-12 RS-232 Analog Possible

Power/Current

 N/A 1 - 35 mA (Digital)

Electrical Interface

 N/A Seacon LMG-4-BCL Underwater or Equivalent

Reverse Polarity Protection

 N/A No

Insulation

 N/A >50 MΩ @ 50 VDC

Environmental

Compensated Temps

 N/A 0 °C to +50 °C

Vibration

 N/A 2 g @ 10 - 45 Hz .02 in @ 45 - 100 Hz 10 g @ 100 - 1000 Hz

Shock

 N/A 100 g 11 ms Half Sine

App Media

 N/A Fresh Water Sea Water

Performance

Total Error Band (TEB)1

 N/A ±0.1% FSO Max (Digital)
Frequency Response2 N/A 5 s (Digital)
  • 1 The designs above are intended to convey just a few capabilities previously used in liquid level monitoring for discussion purposes. Tavis specializes in custom configurations and capabilities for your specific application. Discuss your liquid level requirements with our engineers for your specific application.
  • 2 Frequency Response given is for electronics only. Actual frequency response will depend on pressure range and media.