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Continuously changing variable data and control methods are often required in process control. Process variables such as pressure, flow, level, and temperature are sensed, transmitted, and converted for continuous or batch processing by a wide variety of instrumentation.
Different from discrete (ON/OFF) control, process control and measurement devices sense changing values over a set range
(ex. 4 to 20mA) that are transmitted during continuous (flow production) or batch (a set quantity or output) processing.
Some of the most common variables used for process control are pressure, flow, level, and temperature.
Pressure sensing devices measure pressure at a specific point in the process and transmit the measured value to a
control device that may perform functions such as opening/closing a valve to regulate the pressure.
Flow sensing devices measure the flow rate (volume per unit of time) and/or consumption (total flow) of liquid traveling through a system.
Level sensors monitor the level of liquids, pellets, powders, and other similar products in tanks and process systems.
Temperature switches integrate sensing and a setpoint-tripped output; transmitters receive the measured variable from
a sensor (or have an integral sensor) and convert it to an output more typically compatible with industrial monitoring
or control devices; controllers combine sensing and control of the variable in one unit.
Vibration detection devices are used to monitor, analyze, and identify vibrations of industrial equipment, which may
indicate a malfunction, pending failure, or process restriction.
Other devices used for process control systems include displays for monitoring process values, signal conditioners, and process valves.
Process controllers take a signal from a temperature device, such as a thermocouple or RTD, or from a
pressure/flow/level sensor, and maintain a setpoint using an output signal (relay, voltage pulse, current,
or linear voltage depending on model). Various controllers are available that support modes such as PID,
ON/OFF, Ramp/Soak and Manual.
Basic and standard temperature controllers offer single-loop control of temperature heating or cooling processes
Advanced process controllers accept analog and thermocouple signals for ON/Off or PID control of temperature,
pressure, level or other applications
Accessories include mounting hardware, cables and software
Graphical panel meters combine the instant visual representation of an analog meter with the accuracy of a digital meter.
This style of panel meter features a curved bar that provides an instant visual display, plus a digital readout for reading accuracy.
Standard graphical panel meters measure voltage, current, frequency, or temperature process variables, or directly monitor
high voltage or current sources
Advanced panel meters feature a large 4-inch display, Modbus communication, accept inputs such as voltage, current and
frequency, and are ideal for a variety of industrial applications
Trumeter hour meters and counters provide reliable counting and run hours tracking metered from
processes, equipment or machinery. These units are available in a variety of input voltage ranges
and mounting options.
Pressure gauges and thermometers display process readings for pneumatic, hydraulic, HVAC, plumbing, industrial
and commercial applications.
Mechanical dial pressure gauges are available in a variety of configurations for displaying pressure readings; using
Bourdon tube sensing elements, these gauges do not require any external power
sources to operate
Digital pressure gauges are ideal for industrial and general purpose applications requiring an accurate and
reliable device with easy-to-read digital display
General purpose stainless steel thermometers have bi-metallic sensing elements for
reliable readings and are back mount (3" dial) or adjustable angle (5" dial) with 1/2" NPT connection
Vibration sensors help avoid unplanned downtime by providing vibration monitoring of typical industrial
machinery for implementing predictive maintenance strategies. ProSense vibration sensors measure the RMS
vibration velocity of the device to which it is attached.
Transmitters offer an analog output for vibration measurement; their IP rating
and wide operating temperature range makes them
ideal for harsh industrial applications
Switch/transmitter models provide a switch output that operates at a setpoint; an analog
output supplies an actual measurement
Signal conditioners convert process, temperature, and other electrical signals into voltage, current, or
frequency signals for use with PLCs, loop controllers, encoders, digital displays, or any application
requiring an isolated or analog signal.
DC voltage or current input signal conditioners offer isolation and conversion to/from unipolar to bipolar signals
Universal input signal conditioners provide isolation and accept milliamps, volts, RTD, thermocouple, or potentiometer inputs
Temperature transmitters include head mount or DIN rail mount styles with thermocouple or RTD inputs
Frequency input signal conditioners accept frequency signals up to 100 kHz and provide analog, frequency, or relay outputs
High-speed optical isolators (encoder input) connect encoders to PLCs, drives, and other devices while addressing electrical noise issues and converting signal types
Limit alarms accept analog inputs and provide low-limit, high-limit, or other discrete output indications based on the input value
Electro-pneumatic transducers (I/P) are electro-pneumatic regulators that control air pressure
based on an analog input signal. NITRA transducers convert a 4-20 mA current
signal (I) from a PLC or other controller to a linear pneumatic output pressure(P).
4-20 mA input compatible with PLCs and other controllers
Several output pressure ranges applicable for industrial pneumatic and process control applications
Power meters are highly accurate devices that measure all the standard power parameters plus metering and
harmonics. Meters are available in various mounting styles and operating voltages, and provide the following advantages:
Reduced costs and production losses
Easy-to-use solution for industry, infrastructure and data centers
Integrated temperature sensor on certain models
Detects wiring errors
Select models compliant with ANSI C12.20 and IEC 61557-12
Using discrete I/O, analog inputs and/or Modbus RTU communication, the STRIDE Pocket Portal connects
industrial assets including sensors, meters, and Modbus RTU-capable devices to the cloud for data
monitoring and control.
STRIDE® Pocket Portal IoT Bridge offers an end-to-end solution for small-count remote data collection.
Faster Monitoring: Unmonitored assets can get connected and become monitored assets in minutes with Modbus RTU
Remote Control: Control Modbus device and up to four digital outputs using mobile app
Reduce Costs: Enterprises can implement IoT capabilities without needing technical expertise and without modifying equipment
Retrofit solution: industrial controls, commercial buildings, retail spaces, or factories can be entirely retrofitted with
IoT capabilities in days instead of months