SCR Power ControlsOpto Z provides precise proportional control of constant-resistance heating loads in response to an analog control signal from a temperature controller or PLC I/O module. The SCR power control utilizes an optically isolated trigger circuit for zero-fired switching. It regulates the amount of power applied over an adjustable time base for proportional control of the connected heating load. Zero-fired switching nearly eliminates electrical noise, and a full sine wave ensures harmonics-free output at all power levels.
Payne Controls, (800) 331-1345, email@example.com, www.payneng.com
Pressure Reducer SystemPillarless construction and diameter-independent spring ranges are features of Predu. Additional features of the pressure reducer system include a screwed seat and a marginal seat, three exchangeable spring sizes, a balancing bellow and a sealing bellow, and easy change of spring and actuator.
Ari Valve, (800) 661-3338, firstname.lastname@example.org, www.arivalve.com
Thermal Flow SwitchSeries FSW-420/30 monitors relative flow rate for applications where the actual flow rate is not important. The CE-compliant thermal flow switch has automatic scaling and setpoint with pushbutton rescaling. Designed without moving parts, the flow switch is suited for industries involving flow and temperature control or alarm, and applications involving automation and process cooling.
Omega Engineering Inc., (203) 359-1660, email@example.com, www.omega.com
1/4 DIN Temperature ControllerModel TEC-4100 provides fuzzy logic PID heat and cool control. Features include autotuning on cold or warm start; a short (2") panel depth; a universal programmable sensor input; six types of output; a second output that can be used for cooling function; and universal input power. The controller provides bumpless transfer to manual mode during sensor failure as well as a range of alarm modes.
Tempco Electric Heater Corp., (630) 350-2252, www.tempco.com
Fiber Optic Infrared ThermometersModline 6 firmware provides engineers with enhanced signal processing options, including averaging, peak hold and valley hold. The fiber optic thermometers incorporate an electro-optic design offering built-in compensation for background-reflected energy. These features are accessed by proprietary support software that is used for remote sensor configuration and data acquisition, display and archiving. The software includes demonstration tutorials that pictorially guide users.
Ircon, (831) 458-3998, www.ircon.com
Process ControllerProVU includes a built-in wizard that simplifies setup, with on-screen help on the full graphic LCD display rather than cryptic mnemonics or symbols. Process control operation is made easier because all messages are in plain text and available in seven languages on a display that can change colors. The standard trend view and onboard data logging option allow users to eliminate the chart recorder. Profiling uses plain-text recipe names and a clear progress display. Up to nine outputs, five alarms and five events are available.
West Control Solutions, (317) 626-6118, www.westinstruments.com
Infrared Thermometer with Variable-Target FocusingMarathon MM Series enables users to adjust the focus of measurement targets, either by push-button at the rear of the instrument, or remotely via an RS232/RS485 PC connection, where adjustments can be seen real-time through video. Users can select from either standard fixed-focus sensors or sensors with the variable-focus option, both with a focus range between 8" and 7' (200 mm and 2.2 m). Close-focus units also are available with fixed optics, enabling targets as small as 0.02" (0.5 mm) to be measured from a distance of 6" (150 mm). All of the infrared sensors provide integrated through-the-lens sighting, plus either laser or video-sighting for correct aiming and target location. The thermometer incorporates an optional live video feed into its data-acquisition and sensor programming software, allowing for active frame capture.
Raytek, (800) 227-8074, www.raytek.com
Infrared Pyrometer Calibration System
Suited for quick medium temperature calibration, Black Body BBSM includes a manufacturer’s NIST-traceable certificate of calibration and instruction manual. Other features include temperature range of 68 to 1,112°F (20 to 600°C); 0.1°C resolution; accuracy of ±0.5°C; stability of ±0.5°C; emissivity of 0.97 to 0.98; and an autotune PID controller.
E Instruments Group LLC, (215) 750-1212, www.einstrumentsgroup.com
DIN-Rail Controller for Single-Loop Control
Series 1ZC is stackable to the required number of zones. The CE-approved autotuning controller is designed for precise control of a single control loop with two independent outputs configurable as direct-acting, reverse-acting or alarm. A bidirectional RS485 serial communications interface is standard, and discrete LED displays illuminate whenever associated outputs are active to provide system status. A range of sensor inputs and outputs are supported. Additional features include independently powered 100 to 250 V 50/60 Hz zones; bus wiring; universally configurable outputs for heat/cool or alarm; loop break alarm; pluggable terminal block to ease wiring and controller replacement; and optically isolated inputs and outputs.
Athena Controls Inc., (610) 828-2490, www.athenacontrols.com
Infrared Sensor with Smart Microprocessor
Conceived by combining the company’s microIRt/c and the SmartIRt/c, this small-sized infrared sensor head now provides “brains” and precision in small places without impedance, leakage current or cold junction compensation. It is offered with four sensor heads: 1:2 field of view; 4:1 field of view; 1:2 field of view, side view; and 4:1 field of view, side view with built-in air purge. Outputs are 4 to 20 mA; 0 to 5 V; 0 to 10 V; and RS232. Available temperatures ranges include -22 to 158°F (-30 to 70°C); 32 to 212°F (0 to 100°C); 32 to 482°F (0 to 250°C); and 32 to 932°F (0 to 500°C).
Exergen Corp., (800) 422-3006, www.exergen.com
EPower is designed to be flexible and efficient. A common driver module is used across the power controller range to minimize the need for spares and simplify setup and training. The single-driver module supports up to four power modules, resulting in the ability to support seven different load configurations. Connectivity with PLC, SCADA and DCS systems is straightforward with support for common industrial protocols such as Profibus, DeviceNet, Modbus TCP/IP and Modbus-RTU. Software flexibility is based on five attributes: the devices come preconfigured for out-of-the-box use via the order code; firing mode, current and voltage adjustments are straightforward; configurable I/O; input mode; and alarm setting.
Eurotherm, (703) 669-1312, www.eurotherm.com
DIN/Panel Mountable Solid State Relay
Series DSSR has an internal heat sink, bistable clips for DIN rail or panel mounting and an LED indicator light. It has no moving parts and is a complete solid state relay. It provides reliable switching and long life operation in applications where the inrush currents or induced currents can affect mechanical state relay operation. The compact housing also minimizes panel space demands.
Dwyer Instruments Inc., (800) 872-9141, www.dwyer-inst.com
Thermowell Standard on Thermometer
The company’s industrial 5 and 9" thermometers as well as HVAC bimetal, solar digital and hot water thermometers are supplied with a removable thermowell. Thermowells create sealed systems where temperature measurement can be safely performed. With the media contained, thermometer replacement or service can occur without draining or shutting down the system. Thermowells protect thermometers as they isolate them from media that may be harmful or corrosive. They also shield the sensitive sensing element from high pressures.
Winters Instruments, (416) 444-2345, www.winters.com
Model AG500 has a 21 mm high LED readout with a high-luminance, five-digit display in a 1/8 DIN case. Options for the microprocessor-based digital indicator include universal input types; six programmable alarms; analog retransmission; digital input; 12 or 24 VDC sensor power supply; and RS485 or Modbus-RTU communications. With digital communications, the indicator can be used in conjunction with a PC or PLC. With the analog retransmission output, it can be used with a chart recorder or data-acquisition system. In addition to the process high and low alarms, alarming standards include a latch function, an alarm time delay and hold action.
RKC Instruments, (574) 273-6099, www.rkcinst-usa.com
Control and Data Acquisition Systems
The SG-6 is designed to monitor, document and control processes for ovens, autoclaves, furnaces and presses. Process measurements are stored on the control system’s solid-state hard drive for transmission to the operator PC as desired. This allows the control system to operate even if the operator PC should fail during a run. The control and data acquisition system can be used to create, store and recall process recipes, monitor processes, archive data files and generate reports.
CompuDas, (360) 427-1418, www.compudas.com
RTD Probes with Choice of Termination Styles
All of the company’s temperature-measurement products are described on a CD that includes an application index, interactive resource center with scientific calculators and technical papers. Among the products on the CD is a standard RTD probe that has a diameter of 0.1875" or 0.25" and a length of 5". It has 36" of Teflon-insulated two-conductor copper extension leads and can be supplied with stainless steel overbraid on the extension leads.
Nanmac Corp., (800)786-4669, www.nanmac.com
Power Control Systems
Built to the user’s specifications and requirements, power control systems can be used to manage infrared heating, paint-drying systems, coating, vacuum deposition, silicon carbide power systems, boiler heating, paper drying and other applications. Typical specifications include voltages to 600 VAC; 50/60 Hz; single- or three-phase; input/output switchgear; NEMA 1 or NEMA 12 enclosures; convection or forced-air cooling; or multi-zone capabilities.
Ametek HDR Power Systems, (888) 797-2685, www.hdrpower.com
1/8 DIN Panel-Mount Controller
Offered in horizontal or vertical configurations allowing it to fit variable cabinet profiles, the EZ-Zone PM 1/8 DIN has large characters and buttons to improve usability. The case slots simplify removing the control hardware from the front pluggable DIN chassis by simply utilizing a screwdriver. It also offers advanced functionality such as dual channel PID control, cascade control, square-root linearization, wet bulb/dry bulb capability, ratio and pressure to altitude compensation curves, which are not available with related 1/16 and 1/32 DIN controllers in the line. It can run a single profile ramp-soak program on dual channels simultaneously.
Watlow, (314) 878-4600, www.watlow.com
HiTemp 150 measures and records temperatures between -40 and 302°F (-40 and 150°C). The submersible datalogger is suitable for autoclaves validation and is built to withstand harsh environments. The instrument has a 2" rigid external probe and a real-time clock to provide time- and date-stamped data. The device can be started and stopped directly from a computer, and its small size allows it to fit in tight spaces. The storage medium is nonvolatile solid-state memory, providing maximum data security even if the battery becomes discharged.
MadgeTech, (603) 456-2011, www.madgetech.com