Tech Briefs Magazine - June 2021 - ST-33

Measuring Transformer Terminal Block
Weidmuller's (Richmond, VA) TTB measuring transformer terminal
block series is a systematic offering of modular terminals that
meet all the connection requirements of critical transformer (current/voltage)
protection and measurement functions. The series is
approved according to IEC 60947-7-1 Annex D - safety-relevant components
captively connected to the modular terminal block.
The terminals have been developed for use in secondary circuits of measuring transformers.
For safe application when disconnecting or isolating protection of measuring devices, the terminal
short-circuits the current transformer and thus prevents high voltages from occurring in the
secondary winding. After short-circuiting the current transformer (CT) side and simultaneously
disconnecting the primary side, the meter can be easily and safely checked via relay test or
replaced. Thanks to the patent-pending Comparative Measurement (CM) lever connection, twoterminal
blocks can be selectively disconnected in order to interconnect a calibrated measuring
device. After the measurement, the captive lever is reset to the original position, leaving the
" close-before-open " contact active. The switching state of the TTB series instrument transformer
terminals is easily visible in all lighting conditions based on color-coding. The disconnect lever
can be operated by hand or with a standard screwdriver. It also facilitates the realization of multipole
actuations.
For Free Info Visit: http://info.hotims.com/79414-175
Smart Transmitter with Bluetooth
The iTEMP TMT142B from Endress+Hauser (Premstaetten, Austria),
new generation smart temperature transmitter with Bluetooth delivers
measurements using wireless communication via Bluetooth. It's packaged
in a robust single-chamber field housing. The technology offers significant
improvements in process efficiency and plant availability while reducing
costs.
The transmitter features a highly secure integrated Bluetooth interface that enables users to
wirelessly visualize measured values and NAMUR NE 017 diagnostic information, as well as to perform
configuration tasks. The device can be operated using your phone or tablet and the
Endress+Hauser SmartBlue app. No special tools required. Access to the device is password-protected,
and provisions for Bluetooth communication complies with the highest standards.
The configurable single-channel device transmits converted signals from resistance sensors
(RTD), thermocouples (TC), resistances (Ω), and voltage transmitters (mV) via the 4 to 20 mA
signal or HART 7 communication.
The transmitter is designed for safe operation in hazardous areas as certified by international
approvals (ATEX, CSA C/US, IECEx).
For Free Info Visit: http://info.hotims.com/79414-176
Interactive Surge Protective Device (SPD) Sizing
Selection Guide
Littelfuse, Inc. (Chicago, IL) announced today the launch of a surge
protective device (SPD) selection guide that sizes SPDs to achieve the
best level of protection for a system based on specifications provided.
Surge protective devices need to be sized correctly. If they are sized too low, the system could
be susceptible to temporary overvoltages as well as cause a decrease in the life expectancy of the
SPD. If they are sized too high, it could damage the equipment.
The selection guide offers customers an interactive calculator that quickly provides the right
SPD size to maximize surge protection for their systems. When specifications are entered, the
guide computes the best configuration based on the provided parameters and gives information
on the recommended SPD product with links to the data sheet and other technical resources.
The guide will determine the optimal maximum continuous operating voltage (MCOV) size
for your specific system from variables including:
* Line-to-line voltage
* Number of conductors
* Grounded or ungrounded
* If there is a neutral
For Free Info Visit: http://info.hotims.com/79414-183
Sensor Technology, June 2021
Cov
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ToC
Free Info at http://info.hotims.com/79414-719
Select compounds offer:
THERMAL CONDUCTIVITY
Up to 6.5 W/( m*K)
ELECTRICAL INSULATION
Volume resistivity >1014
ELECTRICAL INSULATION
Volume resistivity >1014
ohm-cm
ELECTRICAL CONDUCTIVITY
Volume resistivity <0.001 ohm-cm
+1.201.343.8983 ∙ main@masterbond.com
www.masterbond.com
LVIT Subsea Position
Sensors
H. G. Schaevitz LLC, Alliance
Sensors (Moorestown, NJ)
announces its SSx-7 series of LVIT
subsea position sensors. Available
in full scale ranges from as short as
1 inch (25 mm) up to 36 inches (900
mm), these devices are constructed of
AISI 316 stainless steel to operate at
depths of 10,000 feet (3,000 meters).
The SSx-7 body style easily fits into an SAE Oring
port in the end of a hydraulic cylinder
and is terminated with the popular micro-circular
subsea connector. Offered with common
analog voltage or current loop outputs,
standard SSx-7 series position sensors are
good solutions for many subsea applications
like: Choke actuators in a PBOF environment;
BOP sealing or shearing ram positions;
annular BOP seal compression piston; ROV
electric and hydraulic actuators; hydraulic
cylinder position sensing.
For Free Info Visit:
http://info.hotims.com/79414-171
APPLICATIONS
ADHESIVES for
SENSOR
SENSOR
APPLICATIONS
EPOXIES & SILICONES
EPOXIES & SILICONES

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Tech Briefs Magazine - June 2021

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