Spring 2014
InsightsPhone: 888-584-6165 Kele.com
E-mail: [email protected] Int'l Phone: 001-901-382-6084
FOREVERY
THERESENSOR
GAS IS A
Which detectors do you need for your job? Find out on page 9
14ISSUE:
Questions From the Field pg. 5
Buy Big, Buy Better with Kele's Project Pricing
pg. 7
For Every Gas, There's a Sensor
pg. 9
Back to Basics: Totalized Values vs. Instantaneous Values
pg. 12
Specmanship pg. 13 Temperature: Boiled Down
pg. 15
Product Profile pg. 17
SPRING
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 2
THE BRAND NEW KELE CATALOG IS NOW AVAILABLE
Call 888.584.6165 or visit Kele.com to request your copy today.
YOU ASKED FOR IT, WE DELIVER!
THE ALL-NEW KELE CATALOG APP• Access every product in our catalog instantly • Easy access installation forms & wiring diagrams • Bookmark any item for repeat orders • Directly connect to kele.com
COMING THIS FALL
* Beta version shown, apperance of app interface may differ.
The ZIP Economizer saves energy in buildings by using cool outside air as a means of cooling the indoor space. This application can drastically reduce HVAC energy costs while also improving air quality. The ZIP has easy plug and play features and by adding the different modules available in the series you can conveniently control many aspects of the space including temperature and humidity as well as remote alarm indication. FULL BELIMO SELECTIONS AVAILABLE AT KELE.
ZIP ECONOMIZER SERIES
The 105 SERIES multi-status indicator is housed in a Divis ion 2 hazardous location and marine rated enclosure. It contains the identical technology and XBR LED circuit as the 125 Class Chameleon. Edwards’ XTRA-SAFE technology employs patented combinations of color AND flash-rate to provide more definite status indication to those who have color vision deficiency (CVD). Applications include:
• They are installed at international ports across the country to tell the crane operator when his hook has securely latched onto the container cover of the ship or barge.
• They are installed in salt water environments because they are marine rated.
• Industrial & Chemical Plants love this product due to its ratings for Division 2 hazardous location environments and its flexible mounting options.
• This product gives your customers a bright visual multi-status indicator with flexible mounting applications
This 105 SERIES product is the “Go to Product” for all of your chemical, caustic, Division 2, and marine applications. Buy now at kele.com.
CUSTOM VALVE ASSEMBLY
Because we have our own production shop Kele can ship you product that is ready to install, saving you time and keeping your projects on track. Our custom valves are assembled and shipped the same day you place your order. A free service to you from the experts at Kele.
3
KELE SAVES YOU TIME AND MONEY — FIND OUT MORE AT KELE.COM
KITTED
SKUs from multiple vendors consolidated...assembled and calibrated as needed.
TAGGED
1 2 3
SKUs grouped by project and labeled per project location (building, AHU, floor).
SHIPPED
Bothimmediatefulfillment and scheduled delivery available. One shipment, one supplier, one freight charge.
KITTING and TAGGING ONLY from KELECUSTOM
CUSTOMIZED CALIBRATION Because we have our own production shop Kele can ship you product that is ready to install, saving you time and keeping your projects on track. We use precision calibration equipment to set your specified signal ranges and engineering units. Our custom calibration is a free service from our technical experts. Most orders are calibrated and shipped to you the same day.
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 4
5
A:
Q: Can I get a nitrogen dioxide sensor and carbon monoxide sensor as an “all in one” device?
Q: Does Kele have a BACnet repeater?
A: Yes we do. Check out the ADAM-4510 RS-422/RS-485 repeater.
While there are a few sensors out there that house both sensors in one enclosure we do not recommend
them. The reason we don’t is because the two gasses should be sensed at different heights. Nitrogen
dioxide sensors work best when installed 12" to 18" from the ceiling and carbon monoxide sensors work
best 36" to 60" from the floor.
2- & 3-Way Ball Valves with Stainless Steel or Chrome Trim
Order today! Visit kele.com or call 877-826-9045
Siemens Ball Valves and Actuators are backed with the Siemens Product Guard Plus 3™ warranty, which provides an initial two-year manufacturer warranty, plus three additional years of coverage.
Some limitations may apply to warranty coverage.
No one offers you more! Count on Siemens for a comprehensive selection of Chrome and Stainless Steel Ball Valves. Only Siemens offers a wide Cv range of 0.4 to 160 in ½- to 2-inch sizes, and an industry-leading 200 psi close-off.
Sizing is easy with over 100 valve body choices — both 2-way and 3-way in ½” up to 2” line sizes. This ensures the perfect fit and excellent performance in heating or cooling loop systems and against very high differential pressures.
This full range of options allows you to meet system requirements in the most economical way.
Siemens’ complete portfolio is designed with leading-edge features to meet rigorous demands and optimize system efficiency:
– Low ANSI Class IV leakage (0.01% of Cv) at rated close-off pressure reduces energy consumption
– 600 WOG/ANSI 250 pressure rating meets the specifications of more applications
– Integrated flow characterizer and ball seal provides an equal percentage flow characteristic and enables linear heat transfer
– Spring return and non-spring return OpenAir™ Actuators with 2 position, floating, or proportional signals deliver comprehensive control solutions
More choices. Precise control.Find the perfect fit at a great price with Siemens’ complete portfolio.
Siemens Ball Valves and Actuators
2- & 3-Way Ball Valves with Stainless Steel or Chrome Trim
Order today! Visit kele.com or call 877-826-9045
Siemens Ball Valves and Actuators are backed with the Siemens Product Guard Plus 3™ warranty, which provides an initial two-year manufacturer warranty, plus three additional years of coverage.
Some limitations may apply to warranty coverage.
No one offers you more! Count on Siemens for a comprehensive selection of Chrome and Stainless Steel Ball Valves. Only Siemens offers a wide Cv range of 0.4 to 160 in ½- to 2-inch sizes, and an industry-leading 200 psi close-off.
Sizing is easy with over 100 valve body choices — both 2-way and 3-way in ½” up to 2” line sizes. This ensures the perfect fit and excellent performance in heating or cooling loop systems and against very high differential pressures.
This full range of options allows you to meet system requirements in the most economical way.
Siemens’ complete portfolio is designed with leading-edge features to meet rigorous demands and optimize system efficiency:
– Low ANSI Class IV leakage (0.01% of Cv) at rated close-off pressure reduces energy consumption
– 600 WOG/ANSI 250 pressure rating meets the specifications of more applications
– Integrated flow characterizer and ball seal provides an equal percentage flow characteristic and enables linear heat transfer
– Spring return and non-spring return OpenAir™ Actuators with 2 position, floating, or proportional signals deliver comprehensive control solutions
More choices. Precise control.Find the perfect fit at a great price with Siemens’ complete portfolio.
Siemens Ball Valves and Actuators
QA
FROM THE
FIELDBy David Roames | Kele Sr. Technical Sales Rep
QUESTIONS
888.584.6165
7
Think of Kele first when you have a big job or
quote to tackle. Our procurement, sales and
technical staff are here to make this part of your
job as seamless as possible. As you add items
to your quote, the savings could increase, as
Kele is better able to leverage your needs in our
buying plans and inventory management. Our
relationship with our vendors gives you access
to more brands and solutions than any other
BAS distributor that could offer single source
project assistance. In addition,purchasing a
greater amount of your projectcan qualify you
and your company for lower multiplier
opportunities as you grow your business with
Kele as a partner. And who better to select as
your partner than a company with 30 years of
experience in the business. Our company was
founded on the solutions that weren’t readily
available in the field. We are still providing
solutions that you can’t find any where else,
with our skilled teams and innovative product
solutions and procurement.
Just think of the time savings alone. How much
time do you spend comparing prices? More than
you should be, if you haven’t called Kele. Let
our sales teams do the comparisons for you.
Kele has a 1500 page catalog and extensive
website offering thousands of solutions to meet
your needs. For instance, did you know that
Kele has over 30 different room humidity
sensors, several new options in relays, and
countless temperature sensors?
To save more money and time on your next
project, allow the sales teams at Kele to bid
your job and compare the time and effort savings
you usually expend getting a project quoted
and the actual job put together. Our teams are
able to offer similar – but equal – products with
valuable savings from our in-stock and readily
available solutions to meet your needs. Plus,
Kele can help you locate any part you need to
complete the job, even if you don’t see it online
or in our catalog.*
Finally, the Strategic Project Program will reduce
your overall project costs. Did you realize the
average purchase order costs over $165 to
administer? With Kele’s Project Program you
get all your peripherals from one place and only
have to write one purchase order for your entire
project.—Less to keep up with.
Plus, you can contact Kele for technical support,
receive advance replacements, have multiple
ship dates and custom ship quantities, experience
no-hassle returns, and have the comfort of
knowing you are saving on your project’s overall
costs. Call us with your large orders today, and
save. But you don’t have to wait until after
you’ve engineered the project to get great savings.
Estimators take note – if you call Kele before
submitting your bid, you can quote your project
knowing you have the best partner in your back
pocket to complete the job. Collaborate with our
expert sales team to get you the best project
solutions and products for your next bid. Call us
at 888-584-6165, fax your bill of materials to
901-937-4983, or e-mail your list to your favorite
sales rep. You’ll get the best solutions to complete
your project and the best customer service in
the industry.
WITH KELE’S PROJECT PROGRAM
BUY BIGBUY BETTER
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 8
Our customers know that Kele is great for technical support, overnight shipments, and great customer
service. But did you know that in addition, Kele could provide you with the lowest overall expense for
your entire project’s peripherals. How? Try our Strategic Project Program.
The Strategic Project Program is just what the name says – a project solution to solve any sourcing
and logistic issues you may encounter when completing a project, from bid to build.
The Strategic Project Program saves you money with:
Easy product sourcing from our inventory of over 300 manufacturers’ products,
most in-stock, depending on your particular needs
Technical experts to suggest alternative products and solutions to meet your budget
Time and administrative costs savings in reduced material management costs and
logistic and shipping solutions
9
CATALYTIC OXIDATION OR PELLISTORThese sensors are primarily using for sensing
combustibles, and are composed of two matched
sensing beads, one active and one passive.
With the addition of the combustible gas, the active
element catalyzes the oxidation of the gas and heats
up, changing the resistance. The passive element
does not change, so there is a change in the bridge
resistance. That resistance is then measured
and converted into an output proportional to the
concentration of gas detected. These very accurate
and reliable devices are incorporated into the
SPXCD by Honeywell Analytics.
OXYGEN SENSORSOxygen sensors are typically self-powered,
diffusion-limited, and have a metal-air battery.
The sensor consists of cathode, anode and
electrolyte. Oxygen presence within the cells
causes a current to flow between the anode
and cathode, and this can be measured with
a resistor across the circuit. The larger the
concentration of oxygen, the higher the current.
ELECTROCHEMICAL SENSORAn electrochemical sensor has a gaseous diffusion
barrier that limits the amount of gas reaching the
sensing electrode. Typically, there is a sensing
electrode, a reference electrode, a counter electrode
and an electrolyte reservoir. A current is created
between the electrodes when the gas reacts with
the sensing electrode. The current from the sensor
is proportional to the gas concentration. These gas-
specific sensors are found in the higher end toxic gas
sensors such as the 6300 Series and GDC150 from
Bacharach, as well as several other options found on
Kele.com.
NON-DISPERSIVE INFRARED (NDIR)This technology uses the principle that compounds
absorb light in the infrared band at unique
bandwidths. This type of sensor detects fairly inert
substances like refrigerants or CO2. The gas is
allowed to pass through a chamber with an infrared
lamp at the end. And infrared detector is at the other
end with a filter for the bandwidth of the gas being
sensed. As the concentration of the gas increases,
more of the infrared light is absorbed, and the
output is adjusted accordingly. Senseair's 045
eSense and 050 CO2 transmitter both offer this tech-
nology. Kele has a wide variety of CO2
sensors and transmitters.
SOLID-STATE SENSINGThe material in a solid state sensor is metal oxide.
It is heated to a high temperature. Oxygen is
absorbed on the surface, and a resistance is formed
to prevent current flow between the metal oxide
crystals. The resistance changes with the addition
of the target gas, and then, is measured. The
voltage and current that heat the sensor need to
be fairly constant for accurate results. Therefore,
circuitry is installed to monitor them. While these
are subject to react with many different gases,
they offer a low-cost, reliable solution for many
applications.
For assistance with any gas sensing product,
call Kele or go to www.kele.com. We have a
vast selection of products, and our technical
support staff is unmatched in the industry.
Gas sensing is an everyday part of
building control. For example, demand
controlled ventilation (DCV) requires
sensing carbon dioxide to approximate
building occupancy. Chillers require
refrigerant leak detectors, and a natural
gas-fired boiler should have a nearby
methane gas detector. Hydrogen sensors
are found above battery stations, and
ventilation in parking garages is controlled
by sensing carbon monoxide and
sometimes nitrogen dioxide. To control
outside air intake, try installing a volatile
organic compound (VOC) sensor. Use gas
sensors to detect oxygen depletion in
hospital MRI rooms, ammonia in food
processing areas, and a variety of toxic
gases found in industrial environments.
Not only are there many uses for gas
sensors, there are often choices for which
type of sensor to use. For example, in
refrigeration monitoring, solid-state and
non-dispersive infrared (NDIR) sensors are
available. These types differ in degree and
accuracy, price, and variety of enclosure.
The type, quality, and price range of a sensor
vary from application to application.
The following is a brief description of the
types of sensors used for gas sensing:
FOREVERY
THERE'S ASENSOR
GAS
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 10
BACK to BASICS2TOTALIZED VALUES INSTANTANEOUS VALUESVS
Much of what is done by the system in Building Automation and Energy Management is simply measuring things.
The most common variables that are measured are instantaneous values. Temperature, relative humidity, pressure,
and toxic gas levels are typically monitored for their instantaneous value. Gallons of water and kilowatt hours are
common totalized values that are monitored.
One of the best, most common examples of this is in an automotive gauge cluster. Cars have a speedometer
and odometer. The speedometer indicates how fast the car is currently traveling. Displayed in miles per hour
(mph) or kilometers per hour (kph), the speedometer shows the instantaneous speed of the car. The odometer,
displayed in miles or kilometers, shows the totalized value representing how far the car has traveled.
Water flow applications are where these are often confused. When instantaneous flow, usually in gallons per
minute (gpm), is needed an analog signal (4-20 mA) is used. The flow transmitter outputs a signal that represents
how fast the water is moving at that exact moment in time. When totalized flow is needed, usually in gallons,
a digital signal is used. Each contact closure, or pulse, represents a number of gallons that have passed the flow meter.
55
120
MPH GPM
1 2 1 2 7 4 0 0 1 7 2 0
RATE
MILES GALLONS
TOTAL
PROTECTING
THE WAY THE WORLD WORKS
THE LARGEST STANDARD OFFERING OF ENCLOSURE SOLUTIONS
CALL YOUR KELE REP FOR MORE INFORMATION ON HOFFMAN®!
Take Control of Your NetworkBACnet® Routers Multi-Network routers provide stand-alone routing between BACnet networks such as BACnet/IP, BACnet Ethernet, BACnet MS/TP — allowing the system integrator to mix BACnet network technologies within a single BACnet internetwork. MS/TP
Cost-effective automation solutions
Plug-and-Play Ethernet Switches Plug-and-Play (PnP) EIBA Switches provide the functionality, mounting convenience, and ruggedness to fit most building automation systems. As with all our switches the popular EIBA5-100T Ethernet switch, is designed for panel mounting.
Wired and Wireless IP RoutersThe EIPR-E’s resident USB port allows expansion to wireless networks implementing a Wi-Fi access point — increasing the number of LAN-side clients. The EIPR-E has many of the same features found in high-end routers but is simpler to install and commission. EIPR-E IP Router
EIBA5-100T/REIBA5-100T
Portable BASrouter
BASrouterLXBASrouter
www.ccontrols.com ¢ p: 630.963.7070 ¢ f: 630.963.0109 ¢ 2431 Curtiss Street, Downers Grove, IL. 60515
Kele Journal AD - CCSI.indd 1 4/15/2014 7:11:11 PM
AVAILABLE AT KELE.COM
Hoffman® is a leading designer & manufacturer of systems to safely & reliably protect the electronic controls & mission critical electrical systems in industrial, data communications, commercial construction and government applications. Our product solutions feature a wide array of enclosures, accessories and thermal management products.
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 12
13
A single phrase inserted into the body of the
specification may secure the project for one
bidder or eliminate another. Of course, in these
situations the chosen bidder probably helped
write the specifications, securing the job from
the get-go. "Specmanship" is an acquired
talent for many successful contractors, and
understanding the project applications is crucial
for job success and bid selection. There are
certain applications where having a clear bid
specification can make an enormous difference
in the outcome of the bid process, and the
following examples are just a few instances
where understanding the application can make
a big difference in bid choice!
Bid specifications are often critical in determining
the chosen contractor for many building automation
projects. In the past we’ve discussed the problems
encountered when differential pressure type flow
measurement devices are specified for use in
outside air ducts, and the bidder plans to use
a pitot tube, airflow station or velocity probe
device that is designed for supply or return duct
air flows. Its impossible for these products to
accurately measure air flow in what is typically
a low-velocity application; they are not designed
for it.
Short cuts, like tubing together multiple differential
pressure sensors simply will not work in a low-
velocity outside air intake application, even if
an industrial grade, high accuracy, expensive
differential pressure transmitter is used.
A "system" specifically designed for outside air
intake must be specified, bid, purchased, and
installed correctly to assure a successful outdoor
air flow control system. A signal processor
designed to measure air flow is required, and
other factors such as temperature compensa-
tion become important in accurately measuring
low velocity flow.
Proper "specmanship" is key in this application;
an outdoor airflow measurement system such
as the Kele KOAMS is the right solution from
start to finish. Check out the KOAMS Guide
Spec at www.kele.com.
Another misinterpreted specification that comes
to mind is one that requires RTDs, but excludes
thermistors. This specification typically states
a very high accuracy for the RTD; however, the
accuracy is stated as a percentage of resistance
(in ohms), not in degrees. When the accuracy
is converted to degrees, the temperature accuracy
becomes worse than the thermistor. For example,
a 1000ΩPlatinum RTD with an accuracy of 0.2%
is actually only ± 0.95°F.
The guaranteed accuracy of a Precon thermistor
is ± 0.36°F. While we are equally happy to
provide RTDs or thermistors, if a BAS system
is designed to operate with thermistors, why
force the contractor to use RTDs?
Although Kele can help you with writing detailed
specifications to make your jobs easier, "CYA"
notes are another story. This blanket statement
that makes the contractor liable for any design
mistakes or hidden problems has undoubtedly
caused lost sleep for many contractors. While
we cannot help with that, we can help with the
specifications you can control! We wish you good
luck as you work through the specifications for
your projects, and remember that Kele’s engineers
are always available to help you wrestle with
your jobs!
Kele makes it easy! Visit www.kele.com or call
or call 888.584.6165 for more information.
SPECMANSHIP
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 14
15
There are a number of different methods for
measuring a temperature change. Since we all
are in the temperature control business, let’s go
over some of the more common techniques and
explain a few pros and cons to each technology.
A resistance temperature sensor is the most
common in our industry. Specific names for these
types of sensors are Thermistors, and RTD’s. As
the temperature changes, the resistance of the
sensor changes.
THERMISTORS, like those from PreCon, are
made of high quality metal oxide ceramics in a
specific mixture to produce a specific resistance
response to temperature. They usually have a
negative temperature coefficient (temperature up...
resistance down) and are very repeatable, very
sensitive and accurate to ±0.36°F. The resistance
response is non-linear, so it can only be interpreted
by a computer. However, they are inexpensive
and lend themselves to a wide variety of HVAC
mounting applications.
These features make them ideal for building
automation applications. They typically measure
ranges from -30°F to 230°F.
RTDs are made of metal wire or thin metal film.
The amount and the type of metal give each
sensor a different response to temperature.
The most common RTD uses the precious metal
platinum. However, other less expensive metals
in use today are Nickel, and Nickel-iron. Twenty
years ago platinum RTD’s were manufactured
with platinum wire wound on a bobbin to the
desired resistance. The cost of platinum was
an issue, so platinum RTD’s were generally
limited to 100Ω for economic reasons. Today,
with thin film platinum, 1000Ω RTD’s are much
more desirable due to their higher sensitivity.
The cost of thin film is less than wire wound
because the metal is kept to a thin sliver of
platinum on a substrate to achieve the desired
resistance. All RTD’s have a positive temperature
coefficient (temperature up…resistance up) and
are very stable and accurate. They are more
expensive than thermistors but are ideal for
very low (-320°F) and intermediate temperature
(1000°F) measurement. Most applications will
require a transmitter to convert the resistance
to a 4-20 mA signal, but more and more BAS
manufacturers can take an RTD directly into
the field processor thus eliminating part of the
expense.
SOLID STATE or SILICON sensors are
basically temperature sensitive transistors or
diodes. When an excitation voltage is applied,
the solid state device regulates the microamp
current or sometimes a millivoltage through the
device according to the surrounding temperature.
Solid state devices are inexpensive and are used
by some automation companies. Solid state
sensors are very linear, but depending on the
model, have a fairly narrow operating range.
The general accuracy is a bit less than thermistors
or RTD’s, but is well within acceptable comfort
control limits for HVAC.
THERMOCOUPLES take advantage of a voltage
effect when dissimilar metals are connected
together. A thermally induced millivoltage is
generated at the junction of the dissimilar metals
and changes as the surrounding temperature
fluctuates. A transmitter measures the voltage
and generates a signal (4-20 mA or 0-5 V) for
a controller or meter. Thermocouples come in
many types of metal junctions to produce
different temperature responses. Thermocouples
are especially good at very high temperatures
(>1000°F) and are well suited for industrial
furnaces and process control. They are not very
linear or very accurate at room temperatures
so are not used in HVAC temperature control.
The comfort control of any building starts with
temperature. So regardless of which HVAC
temperature sensor you need, KELE has the
temperature sensor that will interface with your
system and application!
BOILED DOWN
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 16
TEMPERATURE:
17
FOR MORE INFORMATION – CHECK OUT KELE.COM
Kele Insights | Spring 2014 | Kele.com | 888.584.6165 18
© 2014 Kele, Inc. All rights reserved.
The Kele name and logo are registered trademarks of Kele, Inc.
For information or pricing on any of the products showcased in this issue, or to download product data sheets, contact: [email protected] Do you have questions or submissions for Kele Insights? Send an e-mail to [email protected]
3300 Brother Blvd.Memphis, TN 38133
KELE.COM Phone: 888-584-6165
E-mail: [email protected] Int'l Phone: 001-901-382-6084
LET KELE BE THE ONE SOURCE SOLUTION FOR ALL OF YOUR SENSING NEEDS