Page 1 of 2
Measurement & Control News
In this issue:
♦ Process Control with a BarGraph Meter
♦ USB Interface
♦ Current Transformer Polarity Check - Video
Bargraph for Control
The combination of proportional (analog) output and on/off relays on Weschler Bargraph
meters provide a flexible way to control a process or test. The meter in this example regulates
the feed motor speed and turns off the blade motor when overloaded. The tricolor bar
changes from green to amber to red as the blade load increases.
See Bargraph Products
Download Bargraph Catalog
USB Interface
USB is becoming a popular interface for measurement & control equipment. It allows a
computer to easily communicate with a meter, controller, smart sensor, recorder or tester.
USB is limited to one device per port and relatively short distances, but it is handy for
instrument setup and download of stored data.
See USB Products
Measurement & Control News | Weschler Instruments | June 2014
Page 2 of 2
CT Polarity Check
Analog panel meters are easy to set up and simple to operate. This makes them useful for
quick tests - such as the current transformer (CT) polarity check described in this YouTube
video posted by one of our customers.
Check CT polarity with center zero DC ammeter & battery
WESCHLER INSTRUMENTS
weschler.com
info@weschler.com
800-903-9870
440-238-2550
16900 Foltz Parkway
Cleveland, OH 44149
440.238.2550
Specializing in:
Analog Panel Meters
Digital Panel Meters
Switchboard Meters
Bargraph Meters
Ruggedized Meters
Meter Relays
Power & Energy Monitors
Counters / Timers
Controllers
800.557.0064
Fax: 440.238.0660
sales@weschler.com
Transducers
Current Transformers
Sensors
Signal Conditioners
Transmitters
Isolators
Recorders
Data Loggers
Process Calibrators
Test Equipment
6/30/2014