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 - 1 psi to 0 - 300 psi

Proof Pressure

 N/A 150% FS or 15 psi, whichever is greater

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 10 oz Max (without cable)

Wetted Materials

 N/A 304L CRES Delrin Inconel 625 Urethane

Construction

 N/A 1-inch O.D Max, TIG Welded Gage/Case, Urethane Cable with Integral Vent Tube

Fittings / Ports

 N/A Flush Diaphragm with Perforated Nose End

Electrical

Input Voltage

 N/A 20 - 40 VDC

Output Signal

 N/A 4 - 20 mA

Power/Current

 N/A 4 - 20 mA

Electrical Interface

 N/A 2-wire urethane cable with integral vent tube - various lengths

Reverse Polarity Protection

 N/A No

Insulation

 N/A >50 MΩ @ 50 VDC

Environmental

Compensated Temps

 N/A 0 °F to +120 °F

Shock

 N/A 20 g 11 ms Half Sine

App Media

 N/A Fresh Water

Performance

Static Error Band2 N/A ±0.3% FSO

Total Error Band (TEB)1

 N/A ±1.5% FSO
  • 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 Many error band definitions and limits are possible, and these actual error bands are too specific to delineate herein. A clear definition and understanding of any error band is critical, and many manufacturers’ published errors or accuracies can be very misleading. Please consult Tavis regarding your specific error band requirements.