Refrigeration Selector Guide - Spectrum Sensors & Controls

RefrigerationTemperature SensorS E L E C T I O N G U I D E

Advanced Thermal Products Servingthe Refrigeration Industry Since 1985The Tempature Sensor Products Operation of Measurement Specialties offers a world of high reliabilitytemperature sensing products specifically designed for the refrigeration market. For more than 20 years we’ve beena preferred supplier to many of the leading OEMs in the refrigeration industry. We’ve engineered a family of rugged,easy-to-install sensing probes and assemblies that have proven extremely effective in difficult to monitor applications.Our temperature sensors can be found in many supermarket refrigeration systems, walk-in coolers, supermarketcontrols, defrost controls and many more commercial refrigeration products.Custom ApplicationSpecific SolutionsRarely does a 100% Off-the-shelf temperature probe orthermistor satisfy the unique measurement and environmentaldemands of the refrigeration industry. Although we specialize inthe design of NTC thermistor sensors, our engineering team isthoroughly experienced in packaging RTD elements, siliconPTCs, IC temperature to voltage transducers, and digitaltemperature sensors. Our sensor solutions cover a temperaturerange from -50°C to over 350°C in many refrigerationapplications. In addition, the MS family of products have beendesigned to be completely compatible with all major energymanagement and building automation systems in the market.Now customizing your temperature probeis easier than ever... just click on the ProbeConfigurator on meas-spec.com and we'lllead you through a range of variations andoptions to help us build a temperaturesensor completely compatible with most electroniccontrols found throughout the industry.Responsive Engineering& Customer ServiceWe understand the need for speed in today’s fast pacedproduct development world. Our engineers are prepared toeither modify an existing sensor product or design a new “cleansheet” solution within a timeline that meets your requirements.Once a design is agreed upon, we’ll often produce a prototypewithin 48 hours. And following production release, our customerservice group will work with you for complete global logisticalsupport, including schedule sharing programs.World Class QualityMeasurement Specialties’ Temperature Sensor Products areISO9001:2000 certified and adhere to world class manufacturingtechniques ensuring each customer receives the Six Sigmareliability they demand. This commitment to quality hasproduced a reputation for dependability and resulted inpreferred supplier status at many refrigeration OEMs.Low CostManufacturing CentersCERTIFIEDComplementing our temperature sensor design andmanufacturing facility in St. Mary’s, PA are low cost productioncenters in Mexico and China. These highly efficient plantsprovide additional capacity and flexibility allowing us to scheduleproduction globally and ramp-up to meet fast-track deliveryrequirements. Whether your requirement is for a small numberof sensors or a high volume application, MeasurementSpecialties is your source.www.meas-spec.com

Sens-A-CoilTemp SensorClip-OnTemp SensorTube MountC-Style Clip-OnTemp SensorClamp-OnTemp SensorPatented design is thesolution for sensingcondenser andevaporator returnbend temperaturesSpecifically designed tomonitor the temperatureof liquids in coppertubing with diametersfrom 3/8" to 1/2" ODDesigned to monitor thetemperature of refrigerantor other liquids in coppertubing in sizes rangingfrom 1/4" to 7/8" ODMonitors the temperatureof refrigerant or otherliquids in return bend orother areas of coppertubing in 3/8" or 1/2" ODMonitor Refrigerant Temperatures:Refrigeration engineers have longsearched for cost effective, easyto install sensors capable ofmonitoring the refrigeranttemperature in condenser andevaporator coils. In theseapplications sensor attachmenthas been a difficult designproblem since the only suitableplace to mount the sensoris on the coil return bend.Plastic Overmolded Copper Clip:Our specially designed clip has anintegrated fast responsethermistor element and snapsonto 3/8" return bends. Thesensor is housed in a small bulbconnected to the copper clips,maximizing sensing surface area.Monitors Copper TubingTemperature: Many refrigerationapplications require a sensor thatcan monitor the temperature of astandard 3/8" or 1/2" OD coppertube, and field installationmethods can vary widely.Beryllium Copper Spring Clip:Performs a dual function byholding the sensor rigidly in placeon a straight section of 3/8" or 5/8"copper tubing while providing anexcellent thermal connection fromthe copper tube to the sensor.This sensor is ideal for inlet oroutlet refrigerant sensing in avariety of applications.Monitors Temperaturesof Liquids in Copper Tubing:Many refrigeration applicationsrequire a sensor that accuratelymonitors temperatures of liquidsinside standard copper tubing.Our unique design addresses thisneed and the extremely rugged,all-metal sensor allows for veryquick responses to changesin temperature.Steel Spring Clip: The steel clipprovides a dual function byholding the sensor housing rigidlyin place on a straight section ofcopper tubing while also providingan excellent thermal connectionfrom the copper tube to thesensor. Our sensor is ideal forinlet or outlet refrigerant sensingin a range of applications andinstallation is fast and simple asthe sensor assembly just snapsinto place.Easy Installation on CopperTubing: Many refrigerationapplications require a sensor thataccurately monitors temperaturesof liquids inside standard coppertubing and can be installed quicklywith minimal tools. Our clamp-ontemperature sensor provides anexcellent solution and the extremelyrugged, all-metal design allows forvery quick responses to changesin temperature.Tin-Plated Copper Housing:The copper housing protects thesensing element and thermallyties it to the tube. This uniquedesign fits both 3/8" and 1/2"copper tubes and utilizes astandard #4-40 screw with atinnerman fastener or hex nut.The clamp-on sensor is very easyto install and can be mounted oneither the return bend section orstraight section of the tubing.Features:• Easy installation - just snaps on• Cost effective design• Quick response and excellentthermal tracking• Sturdy construction• Standard with 10 ft. of AWG#22PVC jacketed cable• Well suited for use in refrigerationdiagnostic equipment and toolsOptions:• Sensor types includingthermistor, RTD and other solidstatetemperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specifiedFeatures:• Quick response and excellentthermal tracking• Simple installation, attachesdirectly to pipe surfaces• Low cost sensor• Rugged construction: 0.25"OD stainless steel housing• Moisture resistant internalassembly available• Standard with 10 ft. ofAWG #22, PVC insulatedzipcord cableOptions:• Variety of thermistor curvesand resistances available• Cable lengths and colorscan be specifiedFeatures:• Quick response and excellentthermal tracking• Simple installation, attachesdirectly to pipe surfaces• Rugged, all-metal constructionOptions:• Sensor types includingthermistor, RTD and othersolid-state temperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specified• Moisture resistant internalconstructionFeatures:• Fast thermal response andexcellent thermal tracking• Ideal for inlet or outlet refrigerantsensing in a range of applications• Simple installation, attachesdirectly to pipe surfaces• Rugged, all-metal constructionOptions:• Sensor types includingthermistor, RTD and othersolid-state temperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specified

RuggedizedTemp SensorMoisture ResistantTemp SensorAir/SurfaceSensor in MoldedPlastic HousingFin TempSensorIdeal for challenging highmoisture applicationswith continuousfreeze/thaw cyclesProvides solution for theprimary cause of sensorfailure in high moistureenvironmentsGeneral purpose designis cost effective and canbe configured to fit theneeds of many differentapplicationsSpecifically designedto install directly into andmonitor air temperature atcondenser/evaporator finsAddresses Ice Build-up:Continuous freeze/thaw cyclesprovide ice an opportunity toexert a significant mechanicalforce on the wire or cable allowingwater to breach the end seal of astandard sensor probe, therebyproviding a direct path to thethermistor element.Isolated Thermistor Element:Our unique, swaged enddesign provides an excellentmoisture seal between thecable and housing, isolating thethermistor element from outsidemoisture and stresses associatedwith freezing and thawing.Eliminates Exposureto Moisture: Many temperaturesensors are mounted in areassubject to moisture due tocondensation. Thermistors canbe seriously affected by long-termexposure to moisture, which cancause low or erratic resistances.It is imperative that the internalconstruction of the probe assemblyseals off all moisture paths tothe thermistor.Unique Internal Construction:Our proven design provides anexcellent moisture seal betweenall parts of the system and deterswater from entering the assembly.Moisture Resistant Seal:Created by utilizing a specialcombination of wire and epoxiesto help protect the sensingelement and seal out moisture.Monitors Temperature of Airor Surface: This general purposedesign can be used as eithera surface or an air temperaturesensor. The design is well suitedfor applications where cost iscritical and response time is notas crucial.Molded Plastic Housing:The molded plastic housing isavailable in a wide range ofdiameters and lengths. Customconfigurations are available andunique features can be molded infor maximum flexibility. Thedesign can accommodate a widerange of sensing elements and israted for operation up to 125°C.Monitors Air Temperatures atFins: Measuring evaporatortemperature in refrigerationapplications can be tricky becauseof the difficulty in mounting thesensor on or near the heatexchanger fins. Our square,nickel-plated, brass housedclip-on fin temperature sensorsprovide the solution. Theextremely rugged, all-metaldesign allows for very quickresponses to changesin temperature.Fin Clip: Our steel fin clipprovides a method for securelyholding the sensor housingin place for long-term operationin potentially high moisture/freezethaw environments. Thiseasy-to-install sensor isideal for fin air temperaturesensing in a wide range ofrefrigeration applications.Features:• Rugged construction• Tested to 10,000 freeze/thawthermal cycles• Waterproof to IP68• Quick response and excellentthermal tracking• Operating temperature range:-40°C to 105°C• Standard with 3 ft. of AWG #22,PVC jacketed cableOptions:• Variety of thermistor curvesand resistance values• Cable lengths and terminalscan be specified• Compatible with our Clip-Onfor 3/8" and 1/2" copper pipesFeatures:• Excellent for freeze/thawapplications• Standard housing: 0.25" ODnickel-plated brass• Wide operating temperaturerange: -40°C to 125°C• Accommodates a wide arrayof thermistor sensing elements• Standard with 10 ft. of AWG #22,PVC insulated zipcord cableOptions:• Various termination typesof connector pins or lugs• Variety of thermistor curvesand resistances available• Cable lengths, housing typesand wire styles can be specifiedFeatures:• General purpose temperaturesensing• Ideal for cost critical applications• Can be used for air or surfacetemperature sensing• Rugged constructionOptions:• Sensor types including thermistor,RTD and other solid-statetemperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specifiedFeatures:• Fast thermal response andexcellent thermal tracking• Simple installation, attachesdirectly to fin surfaces• Rugged, all-metal constructionOptions:• Sensor types includingthermistor, RTD and othersolid-state temperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specified• Moisture resistant internalconstruction

Air Temp Sensorwith FlangeCustom Probe AssembliesBrass/StainlessThreaded SensorSnap-In AirTemp SensorBendable Copper TubeTemp AssemblyA low-cost, generalpurpose flangedtemperature sensor forducts or forced air systemsUnique design eliminatesinconsistent wallthicknesses and leakinghousings in longinsertion lengthsUnique sensor mountingfor accurate monitoringof air temperature in anenclosureUnique surfacetemperature sensor thatcan be bent to fit intotight spaces or wrappedaround long surfacesRapid Response and StableMounting: The small diameterstainless steel tube allows fora rapid response to changesin temperature while the ruggedflange allows for easy installationand stable mounting. This sensoris an excellent choice for anyrefrigerated system that requiresair temperature sensing, includingvending equipment, refrigerators,wine chillers, freezers andmuch more.Compatible with Major ControlSystems: The air temperaturesensor with flange is compatiblewith almost all major controlsystems on the market today.Consistent Design forAccurate Responses:The stainless steel tube ismanufactured in a uniqueprocess that allows for consistent,reliable wall thicknesses allowingfor accurate, fast thermalresponse for the embeddedsensing element.Strength In Design:The stainless steel tube is brazedto a brass hex body that offersstrength to the overall assemblywhile an integrated connector canbe utilized to simplify theinstallation of the sensor.Designed for Accuracy:Previously, air temperaturesensors for enclosures had to besurface mounted, which meantthey tended to measure thetemperature of the sheet metalthey were attached to instead ofthe air temperature of the enclosure.Special Clip Design: Ourunique design allows the sensorhousing to be easily and securelysnapped into a 0.30" diameterpre-drilled hole. This isolates thesensing element from the sheetmetal allowing for an accurate airtemperature reading.Sturdy Construction: Ourspecial clip design is added toour air temperature sensor thatfeatures a potted metal housingand a plastic molded body thatthermally isolates the assemblyfrom the environment while addinga degree of strain relief.Odd-Shaped or Long SurfaceSensing: Our unique designallows for accurate temperaturesensing in a low-cost package.The time response of the coppertube is extremely fast and thedesign can accommodate anumber of different sensor valuesas well as either flying leads orjacketed cable. A molded handleor strain relief can be added toprovide a degree of moistureresistance and to isolate thesensing element mechanicallyfrom the extension leads.Annealed Copper Housing:The copper used for the sensorhousing has been speciallyannealed to ensure flexibilityso that it can be bent to fit thecontours of the surface thatneeds to be monitored. A varietyof tube lengths are available.Features:• Easy mounting• General purpose flangeddesign with 2 mounting holes• All metal construction forruggedness and fast response• Simple, low-cost sensor• Operating temperature range:-40°C to +100°C• Standard with 10ft. of PVCjacketed cableOptions:• Sensor types includingthermistor, RTD and othersolid-state temperature sensors• Range of sensor accuraciesand values• Cable lengths and styles,connectors and terminationscan be specified• Various insertion lengths,flange sizes and stylesFeatures:• Unique brass/stainless designallows for rugged, reliable servicefor long insertion lengths• Fast thermal response andexcellent thermal tracking• Brass hex provides strength• Accommodates a wide varietyof sensorsOptions:• Variety of housing diameters(English and metric), lengths,wall thicknesses, and gradesof stainless steel and brass• Brass hex sizes• Sensor types includingthermistor, RTD and othersolid-state temperature sensors• Range of sensor accuraciesand values• Cable lengths, styles andconnectors can be specifiedFeatures:• Easy installation - just snapsinto 14 to 18 gauge sheet metal• Extremely accurate andresponsive• Low cost sensor assembly• Standard with 10ft. of PVCinsulated leadsOptions:• Variety of thermistor curvesand resistances availableFeatures:• Flexible surface temperaturesensor• Can be bent to fit the contoursof a wide range of surfaces• Rugged constructionOptions:• Housing lengths• Range of sensor valuesand accuracies• Cable type and lengthsand styles, connectors andterminations can be specified

Temperature Sensor Productsprecisionsensors.meas-spec.com1028 Graphite Road, St. Marys, PA 15857Ph: 814.834.1541Fax: 814.834.1556www.meas-spec.com8-7-13