CS-EM BTU/Energy Monitor
Energy Monitoring of Heating or Cooling Systems, 3/4” to 10” Pipe
Description:
The CS-EM is an economical energy flow monitor intended for applications in energy transfer and heating/cooling systems where energy use requires measurement.
The CS-EM internally calculates the energy passing through the system. The energy used is calculated based on the the mass volume of liquid passing through the system and the difference in temperature between the supply and return lines. The volume of liquid is measured by means of a pulse generating Clark ultrasonic flow transmitter. A RTD sensor built into the flowmeter (T1) measures temperature at the meter and the remote temperature (T2) is measured by means of a precision RTD sensor mounted in the return pipe.
A scaled pulse output is provided and can be configured to report volume flow rate, mass flow rate or energy total. Modbus 485 communications provides an interface with a building automation or monitoring system.
The unit contains non-volatile memory that records flow and energy, and is updated every ten minutes. However, when flow, mass or energy totals are read, the reported values are true current values; the last stored value is added to the current accumulated value when the applicable register is read.
The default medium for the CS-EM is water. Other media consisting of water and a certain percentage of glycol up to 30% can be field configured.
Applications:
- HEATING ONLY APPLICATION
- COOLING ONLY APPLICATION
- HEAT RECOVERY APPLICATIONS
- CONDENSATE RECOVERY APPLICATIONS
- EFFICIENCY MEASURING/VERIFICATION
- SOLAR AND GEOTHERMAL SYSTEMS
Field Replaceable Transducer for 4″ to 10″ Sizes:
Two opposing CS-EMC ultrasonic transducers are inserted into fixed ULTEM® drywells and held in place with light spring force. A locating keyway in the drywell aids insertion and positioning of the transducers. In the event of field failure of a transducer, replacement is straightforward and can be accomplished without removing the pipe spool and shutting down the process.
The electrical PC board can also be field replaced. Calibration factor and other specific information are maintained at the factory for all transmitters shipped.
Energy Measurement:
- T1 RTD is located in the flow sensor
- T2 Remote RTD is installed in a return pipe.
- Heating and cooling energy are both measured and totaled in separate registers in model CS-EM. The values can be interrogated via the Modbus Master.
- 1) Heating Mode: T1>T2
- 2) Cooling Mode: T2>T1
- The energy total pulse output functions in the absolute mode, indifferent as to whether in the heating or cooling mode.
Model DN-EM BTU/Energy Monitor
Energy Monitoring of Heating or Cooling Systems, 1/2” & 3/4” Pipe
Description:
The DN-EM is an economical energy flow monitor intended for applications in energy transfer and heating/ cooling systems where energy use requires measurement.
The DN-EM internally calculates the energy passing through the system. The energy used is calculated based on the the mass volume of liquid passing through the system and the difference in temperature between the supply and return lines. The volume of liquid is measured by means of a pulse generating vortex flow transmitter. A RTD sensor built into the flowmeter (T1) measures temperature at the meter and the remote temperature (T2) is measured by means of a precision RTD sensor mounted in a pipe tee.
A scaled pulse output is provided and can be configured to report volume flow rate, mass flow rate or energy total. Modbus 485 communications provides an interface with a building automation or monitoring system.
The unit contains non-volatile memory that records flow and energy, and is updated every ten minutes. However, when flow, mass or energy totals are read, the reported values are true current values; the last stored value is added to the current accumulated value when the applicable register is read.
The default medium for the DN-EM is water. Other media consisting of water and a certain percentage of glycol up to 30% can be field configured.
Applications:
- HEATING & COOLING LOOPS
- HEAT RECOVERY APPLICATIONS
- CONDENSATE RECOVERY APPLICATIONS
- EFFICIENCY MEASURING/VERIFICATION
- SOLAR AND GEOTHERMAL SYSTEMS
