Technical Reference

Monitoring | Controlling | Signal Conditioning & Communication | Electrical | HVAC | General | Installation & Instruction Manuals | Kele Calculator | Industry Links | AutoCAD Files | Guide Specifications | Solutions Brochures

MONITORING

Temperature

Humidity

Power

Power Equations
Current Transformers
Current Transformer Selection Guide
Determining Burden for Current Transformers
Using Current Monitoring for Load Analysis
Monitoring Higher Voltages
Power Factor
Deregulation of Electric Utilities and the PT-9000 - Winter97
What is the difference in Demand and Sliding Window Demand? - Winter97
What is the benefit of the "Smart" LED option for current switches? - Spring 99
The terms "neutral" and "ground" seem to be used interchangeably. Do they mean the same? - Spring00
CT's don't read DC to they? - Fall00
CT Safety - Summer 03
Cost Effective Upgrade - Summer 03

Pressure

Flow

What is the Difference Between SCIM and SCFM? - Spring97
Linearizing Differential Pressure Flow Sensors - March 96
Measuring Air Flow
Measuring Flow in Tight Spots - Summer 98
GoWith The Flow - Flow Measurement - Fall 98
KMS essentials - Summer 03

Specialty Sensors

Relays

Return to Top
CONTROLLING

Valves

Dampers

Actuator Sizing for Damper Applications - March 96
Damper schedule

Actuators

Pneumatics

Capacity & Consumption - Fall 98

Other

The wiring terminals on many thermostats and packaged HVAC units are designated by letters like R, G, Y and W.
What do these letters mean? - Spring 99

Return to Top
SIGNAL CONDITIONING & COMMUNICATION Transducers

Data Communication

Serial Port Standards

Wireless

If Only They had Gone Wireless Spring 03

Return to Top
ELECTRICAL Power Supplies

Current Loops

Other

The Protection Zone - Applying Surge Protectors - Fall 02
Burned out Bulbs Burning a Hole in Your Wallet - Spring 03
Surge Protection Selection Chart

Return to Top
HVAC SYSTEMS

Return to Top
GENERAL Miscellaneous

Links to Industry Related Sites
CE certification mark. Is this a certification that I should be concerned with? - Summer 98
Time Constant - What does this term mean? - Fall 98
Accuracy Unraveled - Fall 99
The Truth About NIST Certification - Winter 99
Chemical Reistance Chart
NEMA Enclosure Types
Have a Safe Day - Fall 02
Not to be Used as a Safety Device Spring 03

Conversion Charts

Hazardous Locations

Hazardous Atmospheres: An Introduction - Winter 98
Hazardous Atmospheres: Explosion Proof - Spring 99
Hazardous Atmospheres: Instrinsic Safety - Summer 99
Hazardous Atmospheres: Selecting Intrinsically Safe Barriers - Winter 99
The Intrinsic safety spec calls for an isolated ground. Isolated from what? - Spring 00
Q&A Instrinsically safe method of sensing switch closure? - Spring 01

AUTOCAD FILES ready to install!! Select a file set
(Windows95/98/2000/NT)
DWG Files
DXF Files

Guide Specifications