SENSORS AND TRANSDUCERS
ADDITIONAL RESOURCES
DWYER
Series RTD Resistance Temperature Detector
High Temperature, Mineral Insulated, 316 SS SheathPrecision SERIES RTD (Resistance Temperature Detector) offers excellent accuracy and stability over a wide temperature range. Industry standard 3-wire 100 ohm (DIN) probes are available in 6" (15 cm), 12" (30.5 cm) or 18" (46 cm) sheath lengths with 30" (76 cm) extension cable and spade lug terminals.
Series TS-PROBES Digital Temperature Switch Probe
PTC or NTC Temperature CurvesDigital Temperature Switch Probes to be used with Series TS, TS2, TSX, TSS2, and TSWB.
Series AVG Averaging Temperature Sensor
The SERIES AVG Averaging Temperature Sensor can be used to measure the average temperature up stream of the cooling coils in an air handler. The coiled sensor unwinds to a length of 12' or 24' to take an average temperature reading across a large space. The housing has multiple knockouts to reduce the time to install conduit. The Series CC1 mounting brackets can be used to secure the capillary to the wall of the air handler without kinking. The Series AVG can be ordered with a choice of 11 output options that allow it to communicate to any standard building control system.
Series 5 General Purpose Thermocouples
Fiberglass Insulated Wire, Low CostGeneral Purpose Thermocouples are low cost and offered in a variety of configurations. Tip temperatures can be as high as 450°C (842°F) for fiberglass insulated wire, or 200°C (392°F) for FEP insulated wire. For higher temperatures limits, or cover head assemblies, see Series 8 Mineral Insulated Thermocouples.
Series 6 Sensor for Extruders and Plastic Machines
Fits Most Standard NozzlesINJECTION MOLDING NOZZLE TYPE. In-Melt type thermocouples and RTDs are designed to bolt into the injector nozzle and sense the temperature of the melt directly, and is rated to 450°C (900°F). The standard 3/8" hex head stainless steel body has 3/8-24 NFT threads. The sensor tip extends 1/8" beyond the end of the bolt assembly. Not In-Melt type thermocouples and RTDs are designed to screw into a blind hole in the nozzle, and is rated 450°C (900°F). The standard 1/4 NFT thread fits most standard nozzles. EXTRUDER BOLT TYPE Designed for direct mounting into extruder barrels, the Bolt Type thermocouples and RTDs offer easy interchangeability. Standard configuration has a 1/4" penetration into the barrel, and industry standard 1/2-20 NF thread. Order options allow barrel penetrations of 0 inches (flush) to 1 inch in 1/100th inch increments (specify as A dimension) and flex extension in 1 inch increments (specify as B dimension).
Series 7 Protection Tube Assembly Thermocouple and Replacement Thermocouple Elements
Ranges from 1200°F to 2100°F or Ranges from 1210°F to 4100°FProtection Tube Assembly Type Thermocouples are designed for high temperature applications such as ovens, kilns, or other processes. Metal protection tubes can be used in applications ranging from 1200°F to 2100°F. Ceramic tubes can be used in applications from 1210°F to 4100°F. If ordering with a protection tube, specify A & AA dimensions in 6" increments.
Series 8 Mineral Insulated Thermocouples
Limited to 450°CMineral Insulated Thermocouples are known for their excellent mechanical durability and resistance to electrical breakdown. Probe sheaths can be bent most any angle without special equipment. For smaller sheath diameters, and transition fitting is used between the cold end of the sheath and the extension wires. This fitting is 1-1/4" long by 1/4" OD for 1" and smaller sheath diameters, 1-1/2" long by 3/8" OD for 3/16" and 1/4" sheath diameters. Tip temperatures limits depend on sensor type, while the fiberglass extension wire is limited to 450°C (842°F). For high temperature applications such as in ovens or kilns, see Series 7 Protection Tube Assembly Thermocouples.
Series 9 Special Application Thermocouples & RTD
Ring Style or Web StyleSpecial Application Thermocouples and RTDs cover a wide variety of types and configurations. This section covers FEP covered thermocouples and RTDs in rigid and flexible types, ring type thermocouples and RTDs for surface measurement, web type thermocouples for surface measurement of moving objects such as rollers, and penetration thermocouples and RTDs with sharp tips for measurement of viscous liquids and semisolids such as tar and heavy oil, and other material such as frozen food and meat.
Series D Sensors for Sanitary Applications
Used in Sanitary ApplicationsSeries D Sensors for use in sanitary applications.
Series EC Extension Cables
Variety of terminationsFlexible extension cables are available with a variety of terminations.
Series P Penetration Probes
FDA Compliant Materials, Sanitary ApplicationsMonitor internal temperature of poultry, meat, fish, dough, and other fresh or slightly frozen food products. The Series P probes can also be used to penetrate soft process materials such as plastic compounds and rubber. The probes are constructed entirely of FDA compliant materials for use in sanitary applications.
Series W Thermowells
Heavy Duty Mounting, Tapered SheathsSelect bore as 0.260 for 1/4" diameter elements and 0.390 for 3/8" diameter elements. Specify heavy duty mounting for tapered sheaths.
Series T Temperature Sensor Assemblies with Thermowells
Non-Lagging, 316 SSSeries T Sensor Assemblies are available in a variety of head styles and thermowell materials. The sensor sheath material is constructed of 316 stainless steel regardless of the well material specified.
Series ILA In-Line IR Sensor
15:1 Distance-to-Target Ratio, 32 to 932°FThe SERIES ILA Non-Contact Sensors, measure temperatures from 32 to 932°F (0 to 500°C) and provide a linear 4 to 20 mA, or thermocouple output. The 2-wire signal is compatible with almost any indicator, controller, recorder, data logger, etc., without the need for special interfacing or signal conditioning. They are suitable for most materials such as food, paper, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal, and asphalt.
Series O-4 Outside Air Temperature Sensor
High Temperature, Mineral Insulated, 316 SS SheathThe Series O-4 Outside Air Temperature Sensors are great for monitoring ambient air temperatures in outdoor applications. The temperature sensors are mounted in a NEMA 4X enclosure with integral mounting tabs. The mounting tabs can be used to surface or suspension mount the temperature sensors. The removable terminal block makes installation easy. The Series O-4 can be used to measure outside air temperatures in building automation systems or room temperatures inside agricultural ventilation houses.
Series M Magnetic Surface Thermocouple
Attach to Any Ferrous Metal SurfacesThe Series M Magnetic Surface Thermocouples are commonly used for temporary measurements of surface temperatures of ferrous materials. A powerful Alnico Magnet presses the spring-loaded sensor tip against the surface to be measured. The magnet has a holding force of 16 lbs and can withstand up to 1000°F (535°C) without any degradation.
Series S2-1 Surface Mount Temperature Sensors
RTD and Thermistor, 304 SS ProbeThe SERIES S2-1 Surface Mount Temperature Sensors provide a cost effective and reliable solution for surface contact temperature measurement of conditioned water pipes, low pressure steam or refrigerant lines. The sensors are ideal for applications where immersion wells are not practical to install. Models are constructed with a 1" (25 mm) 304SS probe and a 23" stranded etched Teflon® leads.
Series TE-A Averaging Temperature Sensors
Available in 6', 12' and 24' LengthsThe SERIES TE-A Averaging Temperature Sensors are used to measure the temperature in large ducts and air handler units. Bendable aluminum capillaries are available in 6', 12', and 24' lengths. These capillaries consist of four thermistor or RTD sensors which are internally averaged to give a single output signal. Series CC1 mounting brackets are available to mount the capillary to the wall of the duct or air handler without kinking the sensor wires inside the probe. For faster installation, the enclosure has multiple knockouts, wide mounting ears, and a screw-off captured lid.
Series TE-SNW Weather Resistant Surface Temperature Sensors
Strap On Design, Twist Off Cover, 2 to 6" Pipe SizesThe SERIES TE-SNW Surface Temperature Sensors non-intrusively measures the process temperature in hot and cold water loops in buildings. An adjustable metal strap can tightly fit around 2 through 6" pipe sizes, allowing the surface area of the copper plate on the sensor to make good contact with the pipe surface. In order to work with most common building controllers, the output of the sensor can be chosen from 6 different RTD and Thermistor curves. Additional features include a quarter turn twist off cap that is chained to the housing to prevent it from getting lost, and multiple knockout locations and sizes to reduce installation time.
Series 2900 Current to Pressure Transducer
Intrinsically Safe, Explosion-Proof, NEMA 4X EnclosureThe Series 2900 Current to Pressure Transducer delivers reliable high performance for the toughest applications in the most hazardous environments. Its NEMA 4X housing is designed and FM and CSA approved for both intrinsically safe and explosion-proof operation. This unit has advanced circuitry which includes electronic feedback control for superior vibration protection and highly accurate output. The 2900 is not position sensitive and the easily accessible zero and span adjustment make field calibration quick and easy. For ease of installation, this model has input and output ports on both the front and back. It is also not vibration sensitive, which makes the 2900 ideal for field mounting on a valve. These features coupled with the unit's compact size help make set-up and installation simple.
FARGO
Inductive proximity sensors detect the presence of metallic objects. Their operating principle is based on a coil and high frequency oscillator that creates a field in the close surroundings of the sensing surface. The presence of metal in the operating area causes a change in the oscillation amplitude. This change is identified by a threshold circuit, which changes the output of the sensor. The operating distance of the sensor depends on the coil’s size as well as the target’s shape, size and material.
Capacitive sensors are used for non-contact detection of metallic objects & nonmetallic objects (liquid, plastic, wooden materials and so on). Capacitive proximity sensors use the variation of capacitance between the sensor and the object being detected. When the object is at a preset distance from the sensitive side of the sensor, an electronic circuit inside the sensor begins to oscillate. The rise or fall of such oscillation is identified by a threshold circuit that drives an amplifier for the operation of an external load. A screw placed on the backside of the sensor allows regulation of the operating distance. This sensitivity regulation is useful in applications, such as detection of full containers and non-detection of empty containers.
Magnetic sensors are actuated by the presence of a permanent magnet. Their operating principle is based on the use of reed contacts, which consist of two low reluctance ferro-magnetic reeds enclosed in glass bulbs containing inert gas. The reciprocal attraction of both reeds in the presence of a magnetic field, due to magnetic induction, establishes an electrical contact.
Photoelectric sensors use light sensitive elements to detect objects and are made up of an emitter (light source) and a receiver. We offer three types of photoelectric sensors are available.
Photoelectric sensor types:
GEMS
Single Point Level Switches
Fluid Level Sensors & Control Switches
Gems offers the broadest selection of single point liquid level switches anywhere. Our switches are available in a vast range of sizes, mountings and materials and sensing technologies. Gems float-level switches with proven reed switch design offer trouble-free service with precise repeatability. Our electro-optic liquid level sensors are compact with solid-state switching and no moving parts. Gems ultrasonic liquid level switches are ideal for applications requiring solid-state level measurement such as ultra-pure, dirty, coating, scalding or corrosive type liquids. Our new capacitance level sensors are available in contact and non-contact versions. Gems' new XLS-1, an Ultrasonic Level Sensor, is an ideal compliment to the existing CAP-300 in that it has a similar design footprint, but can detect oil, while the CAP-300 cannot. The XLS-1 can also detect many other harsh chemicals, while ignoring foam and condensation.
FLOAT LEVEL SWITCHES & SENSORS WITH MAGNETIC REED SWITCHES
ELECTRO-OPTIC LEVEL SWITCHES
CAPACITIVE LEVEL SENSORS & SWITCHES FOR AQUEOUS AND NON-AQUEOUS FLUIDS
ULTRASONIC LEVEL SENSOR
Multi-Point Level Switches
Gems custom length multi point level switches are an extremely versatile cost effective way to monitor multiple liquid level points within a single tank. These multi point units can be configured with two to seven independent switch actuation levels, depending on the series type. Only a single entry point into the tank is required, and all electrical wiring emanates from a single source. In addition to tracking changing level points of a single liquid within a tank, multi point level switches are ideal for monitoring liquid interfaces and emulsions in vessels simultaneously containing two or more liquids. Gems multi point level switches are available in engineered plastic or metal alloy with a broad range of mounting options and float materials. Gems multi point level sensors are offered with integrated siphon tubes and temperature sensors to provide cost savings and limit the number of intrusions into a tank. Multi point Level Sensor Combo is the answer. This accurate and reliable sensor offers a non-contact alternative to our float of conductance sensors in small tank chemical feed or handling applications when corrosive, sticky or dirty media are present. The UCL-510 features programmable level intelligence and can be reconfigured for different sensing duties.
FLOAT LEVEL SWITCHES
UCL-510 ULTRASONIC WATER LEVEL
Continuous Level Transmitters
Gems float type liquid level transmitters provide reliable and durable remote tank gauging. A wide variety of material combinations make them compatible with most liquid media. The XM & XT-800 Series provide solutions for most small to mid-size tanks, for deeper tanks look to the 36000 and 66000. For challenging fluids such as ultra-pure, dirty, coating, scaling and corrosive types, Gems offers the UCL-510 and UCL-520 ultrasonic liquid level transmitters. Our UCL series are easy to install and do not come in contact with the liquid. The UCL-520 is push button the calibrated, the UCL-510 is supplied with configuration software for flexible system integration or retrofit of existing level devices. For applications requiring an extremely high level of accuracy Gems new CT-1000 potentiometric level transmitter offers no-moving parts sensing of conductive liquids. The XT-1000 magnetostrictive liquid level transmitter provides temperature compensated measurement on a variety of liquid media.
Submersible Pressure Transducers
Gems float type liquid level transmitters provide reliable and durable remote tank gauging. A wide variety of material combinations make them compatible with most liquid media. The XM & XT-800 Series provide solutions for most small to mid-size tanks, for deeper tanks look to the 36000 and 66000. For challenging fluids such as ultra-pure, dirty, coating, scaling and corrosive types, Gems offers the UCL-510 and UCL-520 ultrasonic liquid level transmitters. Our UCL series are easy to install and do not come in contact with the liquid. The UCL-520 is push button the calibrated, the UCL-510 is supplied with configuration software for flexible system integration or retrofit of existing level devices. For applications requiring an extremely high level of accuracy Gems new CT-1000 potentiometric level transmitter offers no-moving parts sensing of conductive liquids. The XT-1000 magnetostrictive liquid level transmitter provides temperature compensated measurement on a variety of liquid media.
Conductive Level Switch and Probes
Warrick® Conductivity level control systems rely on the liquid level sensing capability of probes (electrodes) that are housed inside fittings designed to accommodate one or more probes. The concept is simple: take advantage of a liquid’s conductive properties to complete a circuit and cause a control relay to actuate. These single- or multi-point sensors have no moving parts and the stainless steel corrosion-resistant electrodes can be cut to the desired length. Multiple probes per fitting allow control of several functions in less space with less expense for equipment and installation. To create a system select from numerous level controls, fittings and probe options. For OEM’s we also have the capability to custom configure liquid level control sensors and electrode fittings to meet your specific conductivity level control application requirements.
Flow Switches - Gas Flow & Liquid Flow Switch
Unique Designs...For use in Liquids or Gases Gems™ line of flow switches feature a broad range of configurations for use in liquids or gases. At preset rates, ranging from 50 cc/min to 100 GPM, Gems switches will initiate alarm actuation or automatic shut-down of a system.
These switches feature high quality, corrosion-resistant materials for use in the toughest environments. Material choices, ranging from stainless steel to Ryton offer vast chemical compatibility. Versions include switches with fixed or adjustable actuation settings, models for viscosity compensation or high pressures, in-line models and designs to satisfy any mounting or space requirement.
Variety of Operating Principles The versatile Gems flow switch line utilizes four basic operating principles. Piston types are designed for low flow rates in gases and liquids from 50 cc/min to 20 GPM. Shuttle models are for use with high flow rates from .5 GPM to 100.0 GPM. Paddle models are for large line sizes from 1.25" (32 mm) and up. Electronic switches encompass state-of-the-art electronics and positive visual indication.
Electronic Flow Sensors - Flow Indicator
ROTORFLOW SENSORS
TURBINE FLOW SENSORS - LOW FLOW METER
Pressure Switches & Sensors
Gems™ Pressure Switches Cover A Wide Range of Applications From 2 to 6000 psi (40 mbar to 400 bar) Gems offers a choice of pressure switches, water pressure switches from compact cylindrical models for OEM use, to larger, enclosed units for rugged process applications. These water pressure switches are ideal for the filtering process of coolants in the machine tool industry, use in transmissions of off-highway vehicles and as redundant systems with existing monitors such as transducers.
Unique Piston/Diaphragm Design A piston/diaphragm design, incorporating the high proof pressure of piston technology allows these pressure switches to operate with the sensitivity and accuracy of a diaphragm design. Repeatability ranges from 0.25 percent to 5 percent of the set point.
Many Materials To Choose From Enclosures include aluminum, stainless steel, brass, reinforced plastic and zinc-plated steel. Wetted parts include a diaphragm available in Buna-n, Teflon® coated Kapton®, stainless steel, PTFE, EPDM or Viton® and a pressure port available in stainless steel, brass, zinc or aluminum.
Pressure Transducer & Oil Pressure Sensors
Gems™ Pressure Transducers Deliver Top Performance and Value Under Pressure! When your applications require exceptional pressure sensing performance and long-life reliability, look to Gems to deliver. From vacuum to 10,000 psig (-1 to 689 bar), we've got you covered with the industry's largest selection and best choice of pressure transducer technologies. Our capacitance type sensors are ideal for high volume use; sputtered thin film types are the most precise pressure sensors you can buy, and our other types satisfy all requirements in between.
Typical Pressure Transducer ApplicationsPsibar® CVD Type Pressure Sensors Chemical Vapor Deposition manufacturing methods bond a polysilicon layer to a stainless steel diaphragm at the molecular level to produce a sensor with superior long term drift performance. Common batch processing semiconductor manufacturing methods are used to create a polysilicon strain gauge bridge with terrific performance at a very reasonable price. CVD construction offers excellent price/performance and is the most popular sensor for OEM applications.
Sputtered Thin Film Type Pressure Sensors Sputtered film deposition creates transducers with maximum combined linearity, hysteresis and repeatability. Accuracy is as high as 0.08% full scale with long term drift as low as 0.06% full scale per year. Phenomenal performance for critical instruments -- Gems sputtered thin film transducers are the jewels of the pressure sensing industry.
Capacitance Type Pressure Sensors Gems manufactures capacitance type pressure sensors for a wide range of high volume OEM specialty applications. Detecting the capacitance change between two surfaces allows Gems transducers to sense extremely low pressure and vacuum levels. Robust construction allows these units to be used in a wide variety of applications. Coupled with an ASIC, these units provide good price/performance in a host of packaging styles.
MMS Type Pressure Sensors These transducers employ a micomachined silicon (MMS) diaphragm to detect pressure changes. The silicon diaphragm is protected from the media by an oil-filled 316SS isolation diaphragm; they react in tandem to process fluid pressure. MMS sensors utilize common semiconductor manufacturing techniques that allow for high proof pressure, good linearity, great thermal shock performance and stability in a thin sensor package.
NOSHOK
NOSHOK is an industry leader providing highly reliable and repeatable industrial pressure transducers and transmitters. Multiple measuring ranges, output options, process connections and electrical connections are available. NOSHOK Industrial transducers and transmitters are ideal for applications such as HVAC, hydraulics and pneumatics, injection molding machines, railroad equipment and stamping & forming presses, power generation, and aerospace equipment.
NOSHOK OEM pressure transducers/transmitters include compact, high volume and RoHS compliant models. These sensors are ideal for applications including HVAC, hydraulics and pneumatics, mobile hydraulics, injection molding machines, railroad equipment, stamping & forming presses, and transportation. Multiple measuring ranges, accuracies, and electrical output options are available.
NOSHOK's rugged hazardous location approved pressure transmitters include explosion-proof, non-incendive, intrinsically safe and hammer union models. These NOSHOK transmitters combine the reliability and long life of diffused semiconductor and proven sputtered thin film sensor technology with robust electronics for outstanding performance and repeatability. They are ideal for applications such as oil field, pipeline gas compressor, offshore, chemical/petrochemical, water/wastewater and marine., and carry CSA, FM and CE certifications.
NOSHOK's Electronic Temperature Measurement Solutions provide a variety of options for reliability, stability & unbeatable performance. Multiple ranges, process connection, mounting configurations, stem lengths and stem diameters are available. These sensors are used in many applications including hydraulics, mobile hydraulics, HVAC, pharmaceutical, utilities and municipal refineries, food preparation, and chemical and petrochemical plants. Thermowells are recommended for pressure, corrosive fluids and high velocity applications.
WASCO
UHP PRESSURE & VACUUM TRANSDUCERS
Wasco offers many pressure sensors series to meet multiple applications. Wasco has the capability to customize pressure solutions using:
Wasco's Typical Applications:
Wasco’s Barracuda Series of Ultra High Purity (UHP) Sensors are designed for applications that require sensing of a corrosive media in demanding market applications. These transducers are designed to sense gaseous or liquid media without introducing contamination to the process media.This series is perfect for systems that require sensing of corrosive media in a high accuracy, tight tolerance application