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Rev 1211
Cadillac® CMASSCentral Station Steam Co.®
GENERAL INFORMATION
15615 SW 74th Ave., Ste #150 Phone: 888-556-3913 Tigard, OR 97224 Fax: 503-624-6131 www.cadillacmeter.com
Wall Mount
Panel Mount
1265.38 ENERGY BTU/HR
RATE TOTAL RESET ACCUM
DISPLAY SET
Cadillac® CMASS
STATUS
SPAN
ALARM
CAL
Cadillac® Energy Systems
2460.80 MASS LBS/HR
RATE TOTAL RESET ACCUM
DISPLAY SET
Cadillac® CMASS
STATUS
SPAN
ALARM
CAL
Rev 1211
THE ENERY SYSTEM OF CHOICE The Cadillac® CMASS Mass Flow / Energy Meter is designed to measure the energy consumed in Super Heated Steam and Natural Gas applications. The meter is a rate and totalizing device, which is capable of calculating and displaying Volume, Volume Flowrate, Corrected Volume, Corrected Flowrate, (Heat & Heat Flowrate in Natural Gas), Mass, Mass Flowrate, (Energy in Steam) , Temperature, Pressure, (Compressibility Factor in Natural Gas), and (Specific Volume & Enthalpy in Steam). Combined with Cadillac®’s superior flow meter technologies the CMASS provides the most accurate, repeatable, and maintenance free Mass Flow / Energy system available in the industry.
The Cadillac® HEATX CMASS Mass flow / Energy meter measures the Volumetric flow via a Cadillac CV-P, CV-HS, or CV-U Vortex flow meter along with temperature and pressure inputs via separate loop powered transmitters and in turn calculates the Mass flow and Energy of the compressible media (Gas or Superheated Steam) being measured using internal calculations specific to either Steam (IAPWS industrial formulation) or Natural Gas (SGERG AGA-8 Gross equations).
THE NEW INDUSTRY STANDARD Combined with Cadillac®’s superior flow meter technologies the CMASS Mass Flow / Energy meter has quickly become acknowledged as the industry standard. Customers choose the Cadillac® CMASS Mass Flow / Energy Meter because of proven:
FEATURES
PRINCIPLE OF OPERATION
MODES OF OPERATIONNatural Gas Flow:
Measures the volume, mass, and gross heat content of natural gas by using analog inputs; volume flow, temperature, and pressure.
Super Heated Steam Flow: Measures the volume, mass, and energy content of Super heated steam by using analog inputs; volume flow, temperature, and pressure.
APPLICATIONSEnergy consumption data source for energy management system, DCS, district-wide systems. Energy-Customer Billing from accurately totalized Energy / Mass Flow measurements. Basis for internal cost distribution using campus-wide systems. Efficiency measuring and monitoring from central control rooms. Direct Energy / Mass Flow measurements at both Boiler and point of use locations.
ACCURACY, DEPENDABILITY, CONSISTENCY, LOW MAINTENANCE, RANGEABILITY
CENTRAL STATION STEAM CO.® 15615 SW 74TH AVE., Bldg #150 TIGARD, OR 97224 PHONE: 888-556-3913 FAX: 503-624-6131 WWW.CADILLACMETER.COM
The CMASS Natural Gas flowmeasurement system requires three inputs: 1) Volumetric flow using a CV-P Vortex meter. 2) Temperature using a Temperature Transmitter. 3) Pressure using a Pressure Transmitter.
(Continued on page 3)
Flow Direction
1265.38 ENERGY BTU/HR
R T R AD S
Ca CSTA
Temperature Transmitter
Analog Input #1
AnalogInput #2
Analog Input #3
Boiler Natural Gas feed
Pressure Transmitter
CV-U Vortex Flowmeter
The CMASS Super Heat Steam flow measurement requires three analog inputs: 1) Volumetric flow using a CV-P Vortex meter. 2) Temperature using a Temperature Transmitter. 3) Pressure using a Pressure Transmitter.
(Continued on page 3)
1265.38 ENERGY BTU/HR
R T R AD S
Ca CSTA
Analog Input #1
AnalogInput #2
Analog Input #3
CV-P Vortex Flowmeter
0
Super Heat Steam Supply Flow Direction
Pressure Transmitter
Temperature Transmitter
CENTRAL STATION STEAM CO.® 15615 SW 74TH AVE., Bldg #150 TIGARD, OR 97224 PHONE: 888-556-3913 FAX: 503-624-6131 @ WWW.CADILLACMETER.COM
Rev 1211
Energy and Mass Flow Measurement for Campus Steam Mains and Central Utility Boiler Gas Flows
(continued from Page 2 - CMASS Super Heat Steam)
for calculating Mass flow or Energy according to the IAPWS industrial for-mulation (1997) for the thermodynamic properties of steam. The equations use the pressure and tem-perature values to deter-mine the specific volume and the specific enthalpy. Formulas:
1) Mass Flow = Volume flow/ Specific volume
2) Energy flow = Mass flow x Specific en-thalpy
(continued from Page 2 - CMASS Natural Gas)
for calculating the gas density and compressibil-ity factor based on the SGERG (AGA-8 Gross) equations. The equation uses the pressure and temperature values to de-termine the Mass flow, Corrected flow, and Heat flow.
Formulas:Mass Flow = Volume flow x flowCorrected flow = Mass flow x ref Heat Flow = Mass flow x Hm
Where:flow = Density at flow conditionsref = Density at reference condi-
tions Hm = Mass gross heating value
MASS Flow Measurement for Natural Gas
12”
Pressure & Temp Transmitter Inputs Loop powered by CMASSProvides (2) 4-20 mADC inputs
115 VAC power to CMASS
CV-U Ultrasonic Vortex Input Loop powered by CMASS Provides 4-20 mADC input
12”
Cadillac® Energy Systems
246.80 MASS
R TO- RE- AC-
DIS- SET
Cadil- CM
STA
CMASS in Wall Mount Enclosure
Modbus RTU output to Building Automa-
tion System (Optional)
Flow Direction Natural Gas Line
5 pipe diameters 10 pipe diameters
(2) Isolated 4-20 mADC or Pulse out-
puts to Building Auto-mation System
MASS Flow Measurement for Superheat Steam
115 VAC power to CMASS
Press & Temp Transmitter Input Loop powered by CMASS Provides 4-20 mADC input
12”
12”
Cadillac® Energy Systems
2460.80 MASS LBS/HR
RATE TOTAL RESET ACCUM
DIS- SET
Cadillac® CMASS
STA
CMASS in Wall Mount Enclosure
Modbus RTU out-put to Building
Automation System
CV-P Steam Vortex Input Loop powered by CMASS Provides 4-20 mADC input
5 Pipe Diameters
Downstream
Direction of Flow
10 Pipe Diameters Upstream
(2) Outputs from CMASS:Each configurable as either Pulse or Analog (4-20 madc)
0.00 Lbs/Hr
Cadillac
CENTRAL STATION STEAM CO.® 15615 SW 74TH AVE., Bldg #150 TIGARD, OR 97224 PHONE: 888-556-3913 FAX: 503-624-6131 @ WWW.CADILLACMETER.COMRev 1211
CADILLAC® HEATX MODEL NUMBER STRUCTURE
Wall Mount CMASS provided in a prewired, fuse protected, NEMA6 e n c l o s u r e w i t h i n t e r n a l 120AC/24VDC power supply for easy field mounting and termination.
Wall Mount
16.0”
14.0”
Cadillac® Energy Systems
2460.80 MASS LBS/HR
RATE TOTAL RESET ACCUM
DISPLAY SET
Cadillac® CMASS
STATUS
SPAN
ALAR
Panel Mount 1265.38
ENERGY BTU/HR
RATE TOTAL RESET ACCUM
DISPLAY SET
Cadillac® CMASS
STATUS
SPAN
ALARM
CAL
2.9”
.87”
Electrical Connectors
5.7”1.0”
7.6”
Panel Mount CMASS for those instal-lations where an electrical panel al-ready exists in the field. 5.79”
CADILLAC® ENERGY AND FLOW MEASUREMENT SYSTEM GENERAL SPECIFICATIONS ENERGY SYSTEM SPECIFICATION:
The entire Energy Measurement System shall be supplied, calibrated, and commissioned (if necessary) by a single manufacture, Central Station Steam Co, and shall consist of a CMASS Mass Flow / Energy meter, a non-mechanical flow meter, a precision matched tem-perature sensors/transmitter, and a high accuracy gauge pressure transmitter. A certificate of NIST traceable calibration shall be provided with each system.
ENERGY / BTU METER:Provide a Cadillac® CMASS Mass flow / Energy Meter. The Mass Flow meter shall provide the following measurements at the local display and as outputs* to an Building Control System. Volume, Volume Flowrate, Corrected Volume, Corrected Flowrate, (Heat & Heat Flowrate in Natural Gas), Mass, Mass Flowrate, (Energy in Steam) , Temperature, Pressure, (Compressibility Factor in Natural Gas), and (Specific Volume & Enthalpy in Steam). Output signals shall be either Serial RS-485 (Modbus RTU), and/or via analog (4-20 mADC)and or pulse (Open Collector). Each meter shall be factory configured for its specific application, and shall be reprogrammable using the front panel keypad (no special tools or computer required). *Output options vary by model code and digital communications.
TEMPERATURE SENSOR/TRANSMITTER:Temperature sensor/transmitter shall have a accuracy of +/- 0.1% of temperature span, be 24VDC loop powered, provide a scalable 4-20 mADC output, and field adjustable through a local interface or via digital communications (HART).
FLOW METER:Provide a Cadillac® CV Vortex flow meter. The meter will have no moving parts, shall operate per the “Karman” principle. For Super-heated steam (CV-P) Piezoelectric crystals mounted external to flow body will by employed to measures torsional effects of vortices on shedder bar. For Natural Gas (CV-U) ultrasonic sensors mounted in sidewall of meter body downstream of shedder bar will be employed to measure vortices. Both meters will have an operational accuracy of +/- 1.0% of rate. A fully developed flow profile must be maintained through piping straight run up and downstream of meter. Meter will have minimum 25:1 turndown at stated accuracy in a “Best Fit” in-stallation. Meter will be provided with integral or remote electronics including a local backlit LCD for parameter viewing and easy inter-face / configuration. Meter will be preconfigured for application, but may be field adjusted through local display (no special tool or com-puter required).
PRESSURE SENSOR/TRANSMITTER:Pressure sensor/transmitter shall have a accuracy of +/- 0.1% of pressure span, be 24VDC loop powered, provide a scalable 4-20 mADC output, and field adjustable through a local interface or via digital communications (HART).
CMASS Cadillac Mass Flow / Energy MeterP Panel Mount W Wall Mount
0 Outputs:(2) Relays, (1) Isolated 4-20 or pulse & (4) Logic inputs1 Outputs: Above plus; RS485, (2) extra relays, (1) Additional isolated output
DC Power Supply: 12-28 VDCAC Power Supply: 110/120 VAC
S Steam Tables and formulasG Gas Tables and Formulas
Cadillac® also offers the HEATX Energy / BTU meter for Hot/Chilled water and the CDIS remote display flow station for Saturated Steam Mass flow measurements. Please contact Central Sta-tion Steam Co. for more in-formation on these products.
