The Cadillac® CG Condensate Meter is a totalizing meter designed to measure liquid or condensate in full or partially filled gravity-flow piping systems. Vacuum-rated configurations may also be available for suitable vacuum-return arrangements. With accurate totalization, broad rangeability and proven reliability, the CG provides a practical method for measuring condensate and calculating steam consumption. The CG is not designed for installation in a pressurised condensate line.
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The Cadillac® CG Condensate Meter, also known as the Gravity Meter, is a totalizing meter designed to measure liquid or condensate in full or partially filled gravity-flow piping systems. Vacuum-rated configurations may also be available for suitable vacuum-return arrangements.
The measurement principle is based on a straightforward mass relationship: one pound of steam produces one pound of condensate. The CG measures the returning condensate volume and adjusts for density to provide a totalized reading in pounds, allowing the measurement to represent steam consumption.
The CG accommodates substantial variations in condensate load and is designed to measure from full rated capacity down to minimal flow while maintaining an accuracy of ±1% of consumption. Variations in the upstream steam load do not change the meter’s required installation conditions. The CG must operate in a suitable gravity-flow or approved vacuum-return arrangement and is not designed for installation in a pressurised condensate line.
The Cadillac® CG Condensate Meter, also known as the Gravity Meter, is a totalizing meter designed to measure liquid or condensate in full or partially filled gravity-flow piping systems. Vacuum-rated configurations may also be available for suitable vacuum-return arrangements. By measuring condensate volume and adjusting for density, the meter can provide a totalized indication of steam consumption. The CG is not designed for installation in a pressurized condensate line.
The meter utilizes a rotary drum with six scroll-shaped compartments. As condensate fills each compartment, the drum rotates due to the shifting center of gravity. This mechanical movement is then translated into a totalized measurement of condensate flow.
The CG Meter boasts an accuracy of ±1% of the reading, capable of measuring from full-rated capacity down to minimal flow rates, ensuring precise monitoring across varying load conditions.
The CG is most effective in suitable gravity-return condensate systems where liquid can flow freely through the meter at or near atmospheric pressure. Vacuum-rated configurations may also be considered for approved vacuum-return arrangements. Typical measurement objectives include steam accounting, customer billing, internal cost allocation, energy management and process monitoring. Final suitability must be confirmed from the piping configuration, condensate temperature, expected flow range, available head and operating conditions.
The CG must be installed in a suitable gravity-flow or approved vacuum-return arrangement with adequate drainage and available head. The proposed installation should be reviewed for condensate temperature, flash conditions, flow surges, steam-trap performance and receiver requirements. The CG must not be installed in a pressurized condensate line. Final piping and installation details should be checked against Cadillac Meter’s current application diagrams and the project’s actual operating conditions.
The CG is designed to measure a broad range of condensate flow, from full rated capacity down to minimal flow, allowing it to accommodate seasonal and operating-load variations. Changes in the upstream steam load do not remove the meter’s installation limitations: the condensate must still pass through the CG in a suitable gravity-flow or approved vacuum-return configuration, not through a pressurized condensate line.
The meter’s casing is constructed from cast iron or stainless steel, while the metering drum is made from machine-formed copper or stainless steel. All joints are full penetration welds, ensuring durability and longevity.
Absolutely. The meter is equipped with electronics capable of local and remote registration, and it can interface seamlessly with energy management systems, ensuring integration into contemporary setups.
With proper maintenance, Cadillac® Condensate Meters have been known to provide reliable service for over 50 years, with some units in operation for nearly a century.
For detailed specifications, downloadable documents, or to request a quote, visit the official product page.
Technical Product Guide
Explore the CG Condensate Meter’s applications, operating principle, engineering specifications, installation configurations, maintenance kits, totalizers and model codes.
The Cadillac® CG Condensate Meter, also known as the Gravity Meter, is a totalizing meter designed to measure liquid or condensate in a full or partially filled gravity-flow piping system. Vacuum-rated configurations may also be available for suitable vacuum-return arrangements.
The underlying principle is straightforward: one pound of steam produces one pound of condensate. Condensate volume is measured and adjusted for density to produce a reading in pounds, allowing the measurement to provide a totalized indication of steam consumption.
Steam may be measured as a traded commodity or to evaluate system efficiency. Because condensate loads vary by season and time of day, the meter is designed to measure from full rated capacity down to minimal flow while maintaining an accuracy of ±1% of consumption. Variations in the upstream steam load do not change the meter’s required installation conditions.
The CG must operate in a suitable gravity-flow or approved vacuum-return arrangement. It is not designed for installation in a pressurized condensate line.
When installed in a suitable gravity-flow or approved vacuum-return arrangement, the CG Gravity Condensate Meter can support the following measurement and monitoring requirements:
These applications do not make the CG suitable for every condensate system. The meter must not be installed in a pressurized condensate line. Final suitability depends on the return arrangement, available head, temperature, flow range and other operating conditions.
A data source for energy-management systems, distributed control systems and district-wide systems.
Accurately totalized flow measurements for energy-customer billing.
A measurement basis for internal cost distribution across campus-wide systems.
Remote monitoring of condensate and steam consumption from central control rooms.
Accuracy of ±1% of the reading from full rated capacity down to minimal flow. Meter drums may be specified to ±0.50% accuracy.
Accurate measurement from zero to full rated capacity, accommodating significant seasonal and operating-load variations.
Meters in service for more than 50 years are common. Proper maintenance supports many years of accurate, reliable operation.
Local or remote registration and contact-closure interfacing with contemporary energy-management systems.
The metering drum contains six scroll-shaped compartments. Liquid enters through an axially mounted inlet spout at the centre of the drum. As each compartment fills, excess liquid overflows into the next compartment. The shifting centre of gravity causes the drum to rotate. Each completed compartment can be converted directly into steam consumption.
Condensate enters through the central inlet spout.
A precision compartment fills completely and uniformly.
The centre of gravity shifts and rotates the drum to the next compartment.
Drum rotations are totalized and converted into steam consumption.
Reference the dimensional letters on the drawing against the model-size table. Confirm final dimensions, capacities and connection requirements with Cadillac Meter before procurement or installation.
The meter consists of a metal housing, rotary volumetric measuring drum and totalizer. Fluid is isolated in six scroll-shaped containers within the drum.
The casing is constructed from cast iron or stainless steel. The metering drum is machine-formed copper or stainless steel. Fittings, fasteners and brackets are bronze, brass, stainless steel or high-temperature polymers.
Joints are full-penetration welds using welding rod compatible with the base metal. Bearing bushings are manufactured from Rulon Gold.
Drum seams and meter parts are accessible for inspection, maintenance and replacement. Components are arranged for vibration-free operation across the full rated capacity.
The totalizer indicates the quantity of fluid that has passed through the meter since the previous reading and requires no external power source. Resettable, anti-tampering and contact-closure options are available, together with local or remote mounting.
The CG Condensate Meter supports suitable gravity-flow installations and approved vacuum-return configurations. System design, line pressure, steam-trap reliability, condensate temperature, surge conditions and available head must be reviewed before installation.
The CG Condensate Meter must not be installed in a pressurized condensate line. Confirm the pressure conditions at the proposed meter location before selecting or installing the meter.
A gravity installation is intended for systems where condensate flows freely through and away from the meter by gravity at or near atmospheric pressure. A condensate receiver may be optional where condensate temperature is moderate and system traps reliably prevent excessive steam from reaching the meter.
Steam-trap selection should account for reliability and uniform flow. Float and thermostatic traps are generally recommended. With moderate steam pressure, a correctly installed F&T trap may be positioned below the meter, allowing condensate to rise to the meter. Consult the trap manufacturer.
A receiver is recommended for very hot condensate, flash conditions or flow surges that temporarily exceed meter capacity. It also provides cooling surface area.
For multiple meters operating in parallel, a receiver with multiple inlets or outlets can simplify header requirements. Receivers are generally sized for a nominal hold time of five to ten minutes, depending on surge and flash conditions.
A vacuum-rated CG may be installed on the suction side of a vacuum pump in a suitable vacuum-return arrangement. The proposed configuration must be reviewed and approved for vacuum service. A thermostatic air valve is recommended.
A master trap isolates the heating system from the vacuum. A reliable, uniform-flowing trap such as a float and thermostatic unit is recommended.
Where individual traps reliably prevent steam leakage, the master trap may be omitted and the meter installed with an air bypass. Use an air bypass wherever air may enter the system. Vertical positioning must prevent condensate from flowing through the bypass.
Vacuum-pump controls should permit continuous pump operation to ensure drainage. An optional vacuum receiver downstream of the meter can stabilize flow conditions.
Final meter selection, system design and installation must be checked against Cadillac Meter’s current application diagrams and the project’s actual return arrangement, line pressure, temperature, flow range, available head and surge conditions.
The metering drum is the heart of the Cadillac® Condensate Meter. Cadillac Meter drums retain the patented precision design and are constructed with additional metal for durability.
Maintenance kits are preassembled packages containing the items required to rebuild a CG Condensate Meter. Kits are available for cast iron/brass and stainless-steel meters. Parts are interchangeable except for casing gaskets. Customers report that a typical rebuild using the packaged kit takes approximately one hour.
| Meter Size | Cast Iron / Brass | Stainless Steel |
|---|---|---|
| A | KA103 | KA103-S |
| B | KB104 | KB104-S |
| C | KC105 | KC105-S |
| D | KD106 | KD106-S |
| E | KE107 | KE107-S |
| F | KF108 | KF108-S |
| G | KG109 | KG109-S |
Cadillac® Condensate Meter totalizers use modern electronics with working parts hermetically isolated from the condensate. Local, remote and combination versions are available. The local version bolts directly to the meter and requires no wiring. Parts are available for electronic and mechanical totalizers.
| Meter Size | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| Capacity Model | EA140 | EB140 | EC140 | ED140 | EE140 | EF140 | EG140 |
| lb / Switch Closure | 0.4167 | 0.8333 | 1.2500 | 2.5000 | 5.0000 | 10.8333 | 20.0000 |
| Nominal Closures / Min | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Reading Multiplier | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
Standard calibration values are shown. Confirm the required output and calibration for the selected application.
Use the model-code structure below to identify the required meter configuration. Confirm the completed model code with Cadillac Meter when requesting a quotation.
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Keep the specifications, dimensions, installation guidance and model-code information available for your project team.
Access supporting technical documents for the Cadillac® CG Gravity Condensate Meter. These professionally updated resources can be viewed, downloaded, printed or shared with project teams.
Review these resources alongside current project requirements. Contact Cadillac Meter to confirm product selection, configuration and application suitability.
