From temperature and process controls to power controls and process monitoring equipment, flip through this section to find the devices you need to take control.

Integrated Control Loop

EZ-Zone ST integrates temperature control, power control, safety shutdown and power disconnect in a single package. It has a PID temperature controller already connected to a high-amperage solid-state relay with the option of adding a properly sized heat sink, current measurement, an over/under temperature limit, a definite-purpose mechanical contactor, and digital communications in one package. The user also can add a remote user interface. It provides reduced panel size and decreases the termination complexity, which in turn reduces installation costs while increasing system reliability.

(800) 928-5692

Noncontact Process Infrared Temperature Transmitter

IRtec Rayomatic 20 Series provides an accurate (+0.5 percent of reading), continuous monitoring tool for troublesome process applications that require immediate response time (28 ms). Capable of measuring a wide process range of low and high (up to 3,600°F) temperatures, the transmitter also can be used in processes with special materials or when the target is only partially visible. It has an optics spot size down to 2 mm (0.08").

E Instruments Group LLC
(215) 750-1212

SCR Power Controller

Series THV is offered in 20, 30, 45, 80 and 100 A. The compact, microprocessor-based SCR power controller has programming keys and a digital display on the front; responds quickly to input changes in fast-response applications; and offers programmable-phase control or zero-cross control. Set values and input signals can be checked and monitored by the front digital display keys but can also be made with an external setting unit like a variable resistor. It also includes standard functions such as gradient setting, rampup and rampdown and high/low output limiters.

RKC Instruments
(574) 273-6099

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 to regulate 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 Engineering
(800) 331-1345

Digital Temperature Switch

Series TS is designed to regulate heating and cooling applications. Easy programming via the tactile front keypad enables quick setup of the 12 parameters for reliable operation. User can select 8 A SPDT or 16 A SPST relay outputs. Digital temperature switch is suitable for ovens, dryers, chillers, coolers, freezers, food storage and preservation, cold water packing and food service equipment.

Dwyer Instruments Inc.
(219) 879-8000

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

Temperature Sensing System

Thermal Vial provides accurate measurement and documentation of freezing, process and storage methodology. Features include vial size options, multiple thermowell configurations, loop-powered indication and three levels of calibration accuracy. It ensures that processes and storage temperatures are accurately measured and controlled and removes the need for in-house calibration.

Minco Products Inc.
(763) 586-2904

8, 16 and 32-Channel USB Thermocouple Measurement System

OMET-USB-73T Series supports all standard thermocouple types (J, K, E, T, R, S, B, C and N) with USB 2.0 compatibility, +/-2°C accuracy (including CJC) and maximum sampling of 200 readings per second. The user controls external contacts and relays via 24 digital inputs/outputs in the event of an alarm or other event requiring action. Suited for environmental applications such as monitoring of furnaces, ovens and cold storage, the data-acquisition devices ensure accurate results without requiring PLC and SCADA systems.

Omega Engineering Inc.
(203) 359-1660

Microprocessor-Based Universal Input Temperature, Process Controllers

AccuCon7000 Series includes features such as fuzzy logic, PID with auto-tune, universal input, universal output, retransmission output, and optional RS485 communications. All features are user selectable via the front keypad. Temperature inputs include thermocouple Type K, J, E, N, C, T, R, S and B as well as 100 ohm JIS/DIN RTD sensors. The readout can be programmed to display in °C or °F. Process inputs are 1 to 5 V and 4 to 20 mA.

Brighton Electronics Inc.
(866) 837-8371

Process Temperature Controller

Gammadue Series X5 includes the Profibus DP Slave protocol as well as Modbus/Jbus RTU Slave and a Master Modbus/Jbus that allows the user to interface and expand the controller and total system functions. The main universal input has a sampling time of 100 min and can accept RTD, thermocouple, differential temperature and current and voltage linear inputs (0 to 20 mA DC and 0 to 10 VDC). It has three freely configurable digital inputs and selectable control modes such as single-action PID algorithm; double-action (heat/cool) PID; double PID algorithm; valve drive PID algorithm or simple on-off control. Controller tuning types can be selected as on-demand one-shot tuning or more advanced self-learning adaptive tuning.

Ascon Corp.
(630) 482-2950

Videographic Data Recorder

Model PPR-1800 videographic data recorder has a 6.1" TFT-LCD color screen that offers bright, sharp viewing with 640 x 480 VGA resolution. The data recorder can be used to monitor, record and evaluate processes in a range of industries such as petrochemical, food and beverage, pharmaceutical, plastics, environmental testing and packaging. The “plug and play” layout of the rear deck supports up to six I/O cards that can plot up to 18 channels of analog data, or a combination of both analog and digital input/output. Analog cards have one to three channels per card, and digital input/output have six channels per card. Permanent data storage is accomplished through the use of internal flash ROM and removable CompactFlash memory cards or downloaded directly to the PC.

Tempco Electric Heater Corp.
(630) 350-2252

Temperature Process Controllers

A 1/8 DIN controller and indicator with text display, Model 32H8 has five onboard process recipes and the company's Instant Accuracy system. Scrolling text messages, including alarms and event messages, describe each parameter and alert operators of changes in plant conditions. Though the messages can be customized with a PC, the control's “Quick-start” code can be used to configure the essential functions required to monitor and protect the process.

(703) 443-0000

Infrared Sensor with the Smart Microprocessor

By combining the company's microIRt/c and the SmartIRt/c, the small-sized infrared sensor head now “has brains” and precision in small places without impedance, leakage current, or cold junction compensation. Smart-microIRt/c has four sensor heads to choose from: 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. Temperatures ranges available 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

Modular Temperature Controller

Geflex combines a PID temperature controller, solid-state relay (5 to 120 A) and current transformer into one DIN-rail-mounted package. It simplifies wiring and installation for multiloop temperature control applications and eliminates the need for panel cutouts required by traditional discrete panel-mounted temperature controllers. Process monitoring and configuration is accomplished at a single flat-panel HMI display. Applications include temperature control for plastic extrusion, plastic hot-runners or any multiloop process.

Gefran ISI Inc.
(781) 729-5249

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 for easy wiring and controller replacement, and optically isolated inputs and outputs.

Athena Controls Inc.
(610) 828-2490

Magnetic Thermocouple or RTD

Sensor allows quick, easy positioning. Available in type K and J as well as Pt 100 .385, the magnetic sensor can be attached to any magnetic surface such as tanks, steel castings and bearing housings. The standard 13-lb pull-force magnet ensures intimate contact with the surface being measured. They can be ordered with standard size connectors for use with most handheld thermometers. The magnet retains approximately 90 percent of its pull force at temperatures up to 700°F (371°C).

Eustis Co. Inc.
(425) 423-9996

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.

(800) 227-8074

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

Temperature Control

ecoTron is suitable for applications in industrial heating and refrigeration applications. It is offered in two mounting options: ecoTron T for DIN-rail mounting and ecoTron M in the size 76mm x 36mm for panel mounting. Both types are fully programmable through instrument keys and have a 3-segment LCD with symbols for °F or °C and symbols for heating or cooling cycles.

Jumo Process Control Inc.
(610) 380-8002

Ethernet Temperature Controller

Models UT351/UT551 offer features such as autotune, fuzzy logic overshoot, suppression and hunting suppression. Ethernet gateway makes it possible to connect serial controllers and other Modbus devices to the temperature controller through RS485 communication.

Yokogawa Corp. of America
(800) 258-2552

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.

(800) 323-4340

Infrared Thermometer for Hazardous Locations

Model RT8A is built to withstand the rigors of measuring the temperature of moving materials, webs or inaccessible objects without contact in hostile production environments. Four models cover operating temperatures of 0 to 1,000°F (0 to 538°C). The two-wire, stand-alone infrared thermometer is housed in a NEMA 4X/IP65-rated housing that can be supplemented by optional cooling and lens purging facilities. It can be integrated directly into a two-wire 4 to 20 mA current loop.

Land Instruments International
(215) 504 8000

Mini Sanitary Temperature Probes

RTDs are designed for applications that require critical temperature measurement for small-diameter lines in sanitary processes. The RTDs cover temperature range from -58 to 392°F (-50 to 200°C) with ±0.10 percent accuracy at 32°F (0°C). Time constant is 1.5 sec max for 63.2 percent response to step change of temperature in water moving at 3 ft/sec. Insulation resistance is 500 MW at 100 VDC. Repeatability is less than ±0.01 percent change in ice point resistance after 10 consecutive cycles from -58 to 392°F.

Burns Engineering
(952) 935-4400

Ready-to-Install Temperature Assemblies

Designed for surface measurements, assemblies mount directly to tanks, pipes, motors, compressors, reactors or anywhere a skin (surface) temperature measurement is needed. The assemblies include the company's Worm flexible sensor coupled with a PC-programmable or smart Hart temperature transmitter. The spring-loaded flexible sensor trims to length and slides through the connection head port and into the assembly, without removing any of the assembly components.

Moore Industries-International Inc.
(818) 894-7111

Dual-Point Ignition Control

Series 35-62 is for gas-fired applications using two separate burners. The dual-point direct-spark gas-ignition system controls a single gas valve and simultaneously lights and monitors both gas burners. Applications include boilers, furnaces and dryers. It includes a 24 VAC microprocessor-based DSI control, system diagnostic LED, custom pre-purge and inter-purge timings, remote flame-sensing with dual-flame sensor inputs, full-time flame sensing and dual flame-sense test pins.

Fenwal Controls
(508) 881-2000

Temperature Control

Series 120 employs a UL Class 2 low voltage sensor circuit. Standard models have 115/230 VAC field selectable input, up to 20 A SPST relay output, on-off control mode, and choice of NTC thermistors, platinum RTD or thermocouple sensors. Overlapping setpoint ranges from 0 to 2,000°F (-17 to 1,093°C) depending on sensor type. Accuracy is ±1°F over an ambient operating temperature of 32 to 158°F (0 to 70°C). Optional control configurations include 24 VAC input voltage; fixed, remote or local setpoint adjustments, custom setpoint ranges and DC SSR driver output.

Zytron Control Products Inc.
(609) 771-0101