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 - 37 inches H2OD

Line Pressure

 N/A 2.25 - 17.18 psia

Proof Pressure

 N/A 75 psig

Burst Pressure

 N/A 125 psig

Sensor Type

 N/A Variable Reluctance

Weight

 N/A 32 oz Max

Wetted Materials

 N/A 17-4 PH SST

Construction

 N/A Differential (Ullage) Reference Tube, TIG Welded 17-4 PH SST Flush Diaphragm with Integral Flange

Fittings / Ports

 N/A N/A - Flush Diaphragm with Flange

Electrical

Input Voltage

 N/A 20.5 - 32.2 VDC

Output Signal

 N/A 0.5 - 5.5 VDC

Power/Current

 N/A 20 mA Max

Electrical Interface

 N/A MIL-C-26482/MSFC 40M39569 (10-6)

Reverse Polarity Protection

 N/A Yes

Insulation

 N/A >100 MΩ @ 50 VDC

Output Impedance

 N/A 1000 Ω Max

Environmental

Compensated Temps

 N/A 32 °F to +110 °F (-65 °F to +165 °F Operating)

Shock

 N/A 10 g 11 ms Half Sine

App Media

 N/A Waste Water

Performance

Static Error Band2 N/A ±1.0% FSO Max

Thermal Error1

 N/A ±2.0% FSO Max
  • 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.