Building Automation Lvl 2 Flashcards
A ____ is a temperature-sensing element consisting of two dissimilar metal wires joined at the sensing end. Produces a very small voltage when heat is applied to it.
Thermocouple
A ____ is a temperature sensing element made from semiconductor material that changes its resistance in response to different temperatures.
Thermistor
What are some ways that ‘Resistance Temperature Detectors’ are different than thermistors?
- ) They are made from different materials (commonly platinum)
- ) Lower resistance
- ) Wider Range
- ) Slower response to temperature changes
A ____ is a switch that activates at temperatures above or below a given set point.
Thermostat
A ____ is a device that measures the amount of moisture in the air.
Hygrometer
Most hygrometers measure air moisture in percentage of ____-____.
Percentage of Relative Humidity. (%RH)
A ____ is a switch that activates at any humidity level above or below a given set point.
Humidistat
____ pressure is measured when you contrast the pressure readings of two separate points in a duct.
Differential
What is a transducer?
A device that converts one form of energy to another form of energy.
A(n) ____ measures the velocity of air within a duct.
Airflow station
A ____ is a closed metal container that heats water to produce steam or hot water.
Boiler
What are the two parts of an air conditioner?
- ) Evaporator
2. ) Condenser
A ____ heat pump uses the ground (below the frost line) as a heat source and heat sink.
Geothermal
A ____ is a water distribution pipe that routes a water supply vertically one story or more.
Riser
A ____ is a fitting that regulates the flow of water within a piping system.
Valve
Water flow can be measured as ____ or ____.
- ) Flow Rate
2. ) Total Flow
A ____ is a watertight, thermally conductive case for immersion-type temperature sensors within pipes, vessels, and fixtures.
Thermowell
Pumps that are installed to draw water from wells, empty sump pits, or to operate plumbing appliances would be classified as ____ - operated pumps.
Intermittently
What type of pump creates flow by trapping a certain amount of water in a chamber, and then forcing it out through a discharge outlet?
A positive displacement pump.
What type of valve controls water flow by partially opening or closing?
A Throttle Valve
What is a ‘TMV’ and what does it do?
“Thermostatic Mixing Valve”, Achieves the desired water temperature by mixing different amount of hot and cold water.
What type of device is used to increase pressure to plumbing fixtures while water is already flowing?
Boost Pumps
A ____ is used to push wastewater up to a sewer that is at a higher elevation than the lowest part of the building drain.
Lift Station
What are the 4 basic functions of a Fire ALARM system?
- ) Alarm Notification (of occupants)
- ) Fire Detection
- ) Monitoring the fire suppression system
- ) Fire safety functions
What are three types of signals put out by the Fire Alarm System?
- ) Supervisory
- ) Alarm
- ) Trouble
The ____ is connected to the fire protection system circuits and interfaces with other building systems. It monitors the circuits for signals and faults, and controls fire safety functions.
FACP
What two types of signals can Initiating devices produce?
Alarm and Supervisory
What are the two basic types of water flow switches are used in fire protection systems?
Pressure-type and Vane-type
It is important to shut down the building’s ____ system in the event of a fire to avoid spreading smoke and flames throughout the building.
HVAC
What are the three types of security system protection?
- ) Point-of-Entry
- ) Specific Area
- ) Spot
What are the two configurations for electric door strikes?
- ) Fail-Safe
2. ) Fail-Secure
A ____ moves heat from one medium (fluid/air/steam) to another.
Heat Exchanger
A ____ Heats air with fire and blows the warmed air into the ducting system.
Furnace
T/F: Electric Heat sources count as heat transfer devices.
False!
____ systems consist of an Evaporator and Condenser, and always consist of a high and low pressure end.
Air Conditioning
A ____ cools water for the purpose of cooling the air in the building. Water enters at about 55 degrees and comes out at about 45 degrees.
Chiller
A ____ is similar to an air conditioner, but it has the ability to operate backwards with actuation of a reversing valve.
Heat Pump
What is a hot water loop?
A closed circuit of hot water supply pipes that are always circulating the heated water. (So that hot water is instantly available, to avoid water waste)
What two signals can fire SUPPRESSION systems put out?
- ) Alarm (Flow Switches)
2. ) Supervisory (Tamper Switch)
T/F: NAC and IDC circuits can set off supervisory signals.
False. Supervisory signals are a function of monitoring the fire suppression system.
Which of the three types of Fire Alarm circuits is addressable?
SLC
Which of the three types of Fire Alarm circuits doesn’t typically have an End-Of-Line resistor?
SLC
What is the difference between Class A and Class B circuits?
Class A have a return path from the last device back to the FACP.
T/F: The Security System and the CCTV System are separate systems, though they are almost always integrated.
True
What are some examples of Security System inputs?
- ) Lasers
- ) Motion Sensors
- ) Glass Break Sensors
- ) Pressure Sensors
What are the three Security System Protection Types?
- ) Point-of-Entry (windows, doors, etc)
- ) Specific Area (one defined location)
- ) Spot Protection (Safes, valuables)
What are the three types of Security Circuits?
- ) Non-Supervised
- ) Supervised (Single EOL)
- ) Supervised (Double EOL)
A ____ is a computer that stores access control database information and makes intelligent decisions for the system.
Supervisory Computer
In a Security System, a ____ contains the electrical connections and control interfaces for the system.
Control Panel
The holding force for commercial mag-locks vary anywhere from ___lbs to ____lbs.
500lbs to 3,000lbs
