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Alarmed Smoke Detectors

 

Smoke detectors may have audible alarms, visual alarms, (LEDs) or both. They may also have alarm output to a control unit. Smoke detectors without a built in alarm come with alarm contacts for output to an external annunciator in the detector base or to a control unit. Smoke sensing ICs may come with piezoelectric horn drivers or with alarm output circuitry. The National Fire Protection Association (NFPA) establishes minimum requirements for fire alarm systems and initiating devices such as smoke detectors. Smoke detectors and fire alarm systems that support NFPA 72 must produce an audible alarm signal that is different from all other audible signals.

Products & Services
Smoke Detectors
Smoke detectors are designed to sense the products of combustion. Common types include ionization chambers and photoelectric devices.
BTU Meters
BTU meters measure the energy content of liquid or gas flows in British thermal units (BTU), a basic measure of thermal or heat energy.
Water Heaters
Water heaters are gas, oil or electric-fired devices used to heat water for residential and commercial use.
Mass Flow Switches
Mass liquid flow switches and mass gas flow switches are devices used for measuring the flow or quantity of a moving liquid or gas in terms of a unit of mass per unit time, such as pounds per minute. These devices may be sensors with electrical output or may be stand-alone instruments with local displays and controls.
Flow Meters
Flow meters (flowmeters) and flow sensors are devices used for measuring the flow rate or quantity of a moving fluid or gas.
Product Announcements
Control Instruments Corp. - Optimize Burner Efficiencies with CalorVal
The CalorVal BTU Analyzer optimizes burner efficiencies through measuring and controlling blended gas mixtures, which can reduce costs. These economical, fully-heated, air aspirator driven assemblies... (read more)
Badger Meter - 340 BN/MB Btu Energy Transmitter
The 340 BN/MB Btu Energy Transmitter calculates thermal energy using the signal from a flow sensor installed in a hydronic heating or chilled water system, and the signals from two 10k Ω... (read more)
Control Instruments Corp. - CalorVal Obtains FM and ATEX Approvals
Control Instruments Corporation’s CalorVal BTU Analyzer has received both FM and ATEX approvals worldwide. This product monitors the heating value and energy content of flammable solvents and... (read more)
Spire Metering Technology - Chemical Industry Measurement Solutions
Spire Metering provides non-intrusive measurement solutions for the chemical industry, where aggressive and toxic liquids needed to be monitored. (read more)
Badger Meter - Compute Energy in Hydronic Systems
The Data Industrial® Series 380 Btu meter from Badger Meter is an all-in-one energy usage package for monitoring hydronic heating or cooling systems. The Series 380 Btu meter can accurately... (read more)
Sierra Instruments, Inc. - Sierra Helps California WWTP Harness Biogas
In the conversion of solid wastes to high-efficiency fuel, digestion plays a critical first step in producing raw biogas. For Santa Cruz Wastewater Treatment Facility, Sierra's Immersible Thermal Mass... (read more)
Control Instruments Corp. - CalorVal BTU Analyzer Optimizes Fuel Savings
Control Instruments' CalorVal BTU analyzer is the analyzer of choice for a leading supplier of performance polymers. (read more)
Badger Meter - 340N2 Series Metasys Btu Transmitter
The Data Industrial® Series 340N2 Btu transmitter from Badger Meter is an economical, compact device for sub-metering applications using Johnson Controls Metasys® Network Companion™ and... (read more)
Topics of Interest

Chapter H: H Hysteresis Loss H hydrogen (element) Hagen Poiseuille law See also FLUID FLOW. hand unit of measure used for measuring the height of a horse. hand = 10.16...

This case history decribes how one Company uses the CalorVal BTU Calorific Analyzer to determine the BTU content of the fuel energy it produces from petroleum based waste products.

Definitions Absolute zero is the temperature at which all molecular motion ceases, or the energy of a molecule is zero. British thermal unit (Btu) is defined as the amount of energy...

This case history describes how the CalorVal BTU analyzer is used to provide a real-time measurement of the Toal Calorific Value of a clean producer gas fromed from the gasification of waste wood...

The heat of combustion in a process heater may liberate 100 X 10 6 Btu/h. If the heater s efficiency is 78 percent, the heat absorbed by the tubes should be 78 X 10 6 Btu/h. When observing a heater s...