Monitor Power NK Technologies (San Jose, CA) has introduced the ATH Series AC Current Transducer. The ATH is specifically designed to
monitor power controlled by phase-angled fired, burst fired, or
time proportioned silicon-controlled rectifiers (SCRs) in heating
applications, without requiring an external current transformer
or shorting blocks. A patent pending Time Integration function incorporated in the ATH design provides an output signal
directly proportional to the RMS amperage to ensure accuracy
regardless of the AC current wave shape. Features include:
Availability in 3 outputs: 4 to 20 mA, 0 to 5 VDC,
and 0 to 10 VDC.
A split-core case style can be externally powered by 24 VDC.
A design that allows the sensor to remain installed over the
conductor while the heating circuit is energized, safely, even
if there is no load connected to the output terminals.
The TH- 21 Series thermistor probes from Omega
Series glass encapsulated thermistor elements
which provide excellent stability and accu-
racy. These thermistor sensors can be used in
applications previously out of reach by epoxy
coated thermistor sensors. Features include:
A maximum continuous temperature
rating of -80 to 200°C (-112 to 392°F).
Intermittent operation to 250°C (482°F).
An operating current of 12 micro-amps.
An insulation resistance of 100 M minimum at 100 Vdc at
316L stainless steel sheath and housing.
Battery-Free Pressure Sensor Tag The Vortex1 from Farsens (Spain) is a battery-free RFID sensor tag
capable of transmitting a unique identifier and the associated pres-
sure data to a commercial EPC C1G2 reader without the need of a
battery on the sensor tag. The Vortex1 is ideal for pressure sensitive
assets and process management. No wiring makes it perfect for ret-
rofitting piping systems, gas/liquid containers, or similar assets and
processes. Features include:
A LPS331AP pressure sensor from ST Microelectronics.
An absolute pressure range from 260 to 1260 mbar.
A reading distance of around 1.5 m ( 5 ft).
4 Excitation Frequencies
Alliance Sensors Group (Moorestown, NJ) has announced the model
“S1A” - a DIN rail mountable, pushbutton calibrated, AC-LVDT
Signal Conditioner. Ideal applications for the S1A module include
turbine control systems, steam valve position feedback, and other
redundant control systems that use LVDT position sensors.
A choice of 4 excitation
8 analog DC outputs
( 6 DC voltage and 2 current
RS-485 digital communications.
Color coded plug-in
Self-diagnostics for LVDT
winding failures or cable