Flip though this section to find the devices you need to take control.

Pressure Reducer System

Pillarless 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, sales@arivalve.com, www.arivalve.com 

SCR Power Controls

Opto 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, info@payneng.com, www.payneng.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

Power Controller
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 straight forward 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

Digital Indicator
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

Infrared Thermometer with Variable-Target Focusing
Marathon 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

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 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

1/4 DIN Temperature Controller
Model 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

3-Phase Solid-State Relay Contactors
Series 53 includes contactors with IP20 touch-safe covers with load current ratings of either 25 or 50 A per channel at 530 VAC. Designed for harsh environments and offered with AC or DC input control voltages, the three-phase models also offer IEC emissions compliance to CISPR 11 Class A, and EMC immunity per IEC 61000-4-2 through -6, level 3. The line also includes three-phase solid-state motor-reversing relays rated at either 25 or 50 A per channel.
Crydom Inc., (619) 210-1550, wwwcrydom.com

Programmable Logic Controller
Model FA-M3V can be used to control discrete and batch manufacturing processes. Offering high CPU scanning speed, the PLC can scan a 100 K-step program in just 1 msec. With a built-in Ethernet port, it delivers single module processing and eliminates communications overhead, ensuring both higher throughput and a smaller footprint. The PLC provides a login function with three layers of access control. The login history can be archived on an SD card.
Yokogawa, (800) 888-6400, www.yokogawa.com/us

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

Datalogger
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

Circuit Breakers
Model EC-E protects load circuits connected to a 24 VDC power supply. The electronic circuit breakers combine active electronic current limiting for short-circuit conditions and overload shutdown, ensuring that the breakers respond to fault conditions faster than the power supply. Rated for both hazardous and nonhazardous environments, the circuit breakers have a current limitation of 1.3 to 1.8 times the rated current of the circuit protector. The series comes in three versions. The EC-E1 has an N/O signal contact; the EC-E4 has an N/C signal contact; and the EC-E has reset capability and status output. All have LED indication and are rated for current ranges from 0.5 through 12 A.
Phoenix Contact, (800) 322-3225, www.phoenixcontact.com

Graphical Humidity/Temperature Chart Recorder
Model RH520 can be either desk or wall mounted and provides simultaneous numerical and graphical displays of humidity (20 to 95 percent RH) and temperature (-20 to 140°F [-29 to 60°C]). It also calculates dewpoint. The multiple graphic displays are cursor controlled and have adjustable X/Y axis resolution that allows the user to monitor both temperature and humidity within a user specified range. The sample rate is adjustable from 0.1 sec to 200 min per sample, permitting daily, weekly or monthly graphs. Basic accuracy is 3.5 percent RH and 1.8°F (1°C).
Extech Instruments, (781) 890-7440, www.extech.com

Custom Temperature Probes
Custom Digi-Sense temperature probes can be designed to almost any specification needed. Users can select from RTD, thermocouple or thermistor probes in a range of configurations; temperature ranges; tip styles; junction types; probe materials; diameters; cable lengths and connectors.
Cole-Parmer, (800) 323-4340, www.coleparmer.com

Links