Tips on Measuring Level Gauges in the Field

Why is it important to know how to measure sight glass for replacement?

  • Builds reputation as “the level gauge guy”
  • Positions yourself as a single source supplier
  • Establishes a pattern for repeat business

All top QTS sales reps are familiar with measuring in the field!

What equipment is needed?

  • PPE (Nomes, Hard Hat, Safety Glasses, Steel Toe Boots, etc.)
  • High-Quality Tape Measure
PPE-Sight-Glass

Tape Measure Recommendation

Lufkin Control Series

  • Wide end hook works well
  • Available on Amazon.com
Tape Measure Recommendation for Sight Glass

Method to take Center to Center Measurement

Center to Center Measurement for Sight Glass

What are the Critical Dimensions on a Sight Glass?

  • Vessel Center to Center
  • Visible Range
  • Gauge Overall Length (OAL)
  • Chamber OAL
  • Cover/Cover Overall (OAL)
End Connect Sight Glass
Side Connect Sight Glass

Take Measurement from the Vessel Connection if Gauge Valve is Union Vessel Type

Vessel Connection

Familiarize Yourself with Common Nominal Pipe Size Specifications

Nominal Pipe Size Diagram

Tip: Google “Nominal Pipe Size Chart”

Nominal Pipe Size Image

Ask to get Pictures of the Assembly

  • Pictures are a tremendous help
  • The plant contact should be able to snap photos and email
  • Pictures document the viewing angle and assembly orientation
180 Deg View Angle
270 Deg View Angle
90 Deg View Angle
View Angle Image

Viewing Angle

180 Deg View Angle Example
270 Deg View Angle Example
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Process Level & Control

Glass Level & Gauge Valves

Glass-Trac Reflex

Glass-Trac

Glass-Trac Gauges, formally Daniel Level Gauge & Valve, are available in three main types: Reflex, Transparent, & Tubular. These direct reading instruments are available in many different materials to meet your specific process conditions.

Armored Tubular

Armor-Trac

Armor-Trac products operate to display liquid levels in a transparent sight tube that mirror the liquid level of a tank or vessel.

Illuminator

Illuminators

Illuminator for hazardous locations utilizes the latest technology to provide brilliant back lighting to any process gauge.

Valves

Questtec Solutions offers several gauge valve & steam valve options suitable for a variety of applications. Our valves provide an automatic shut off for glass and steam level gauge products. QTS gauge valves and steam valves are available in a variety of arrangements.

Magnetic Level Indication

Magne-Trac

Magne-Trac

Magne-Trac products are among the safest and most economical ways to measure liquid levels, excelling in applications of extreme pressure, temperature, vibration, and corrosive or hazardous materials.

Bridle Chambers

Bridle-Trac

Bridle-Trac

A bridle-trac may be referred to in the industry as a bridle chamber, a stilling well, a bypass chamber, a cage or a standpipe. It may be used with a customer specified radar for level measurement.

Boiler Level & Control

Direct Reading Devices

Steam-Trac STB 3000

Steam-Trac

Our extensive Steam-Trac product line was designed specifically for several models of water level/steam level gauges with pressure from 300 PSI working steam pressure to 3000 PSI working steam pressure.

Conval Clampseal® Valves

Steam Valves

Questtec Solutions steam valves are designed specifically for use with water level gauges in steam/water service. The angled flow path compactly eases installation of the level gauge, bringing the assembly connection point to the side. Each model is designed to prevent steam galling and maximize packing life to extend the longevity of the valve.

Amber Illuminator

Illuminators

Illuminator for hazardous locations utilizes the latest technology to provide brilliant back lighting to any process gauge.

Indirect Reading Devices

Level-Trac

Level-Trac

Level-Trac products include water columns and probes capable of operating in applications up to 3000 PSI as well as broad line of Water Detection Control Units & Alarms.

Guided Wave Radar

Guided Wave Radar Solutions

The QTS Guided Wave Radar delivers an independent reading of liquid and solid levels. These top mount, direct insertion radars measure interface and direct level of liquids and solids, both of high and low pressures and temperatures.

Alarm Points

Level-Trac

The fixture is designed to be piped in to a vertical configuration to track the contents of a steam drum or other pressure vessel.