1790 Immersion Temperature Sensors QAE26.9...

1 7901790P01Immersion TemperatureSensorsQAE26.9...UseAcquisition of flow or return temperature in heating, ventilating, and air conditioningplants.Type summaryTypeMeasuringrangeCablelengthMaterialconnectingcableTimeconstantMountinglengthNominalpressureQAE26.9 −40...+180 °C 1,2 m silicone

FunctionSensing elementThe sensor acquires the medium temperature via its sensing element whose resistancevalue changes as a function of the temperature.The signal is delivered for further handling by a suitable controller.Characteristic:200018001600140012001000800R [Ω]600ϑ−50 −40 −30 −20 −10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 [°C]Accuracy:2.01.51.00.50.0−0.5−1.0−1.5∆ϑ [K]−2.0ϑ−50 −40 −30 −20 −10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 [°C]1790D011790D02.......................................Mechanical designThe immersion temperature sensor consists of a stainless steel immersion stem, athreaded bushing, and ready-wired connection cables. The sensing element is mountedand soldered to the end of the immersion stem by means of a heat transfer compound.The threaded bushing with screwed nipple R ¼ (sealing capacity within thread) is usedto mount the sensor on the pipe. The interface between the connection cable and theimmersion step is capped by a ca. 30 mm long shrink sleeve.2/4Building Technologies Immersion temperature sensors QAE26.9... CM1N1790enHVAC Products 10.05.2006

Technical dataFunctional dataMeasuring rangerefer to "Type summary"Sensing element LG-Ni 1000Time constantsee "Type summary"Measuring accuracyrefer to "Function"Mounting lengthrefer to "Type summary".Effective sensor lengthQAE26.925 mm.QAE26.90, QAE26.91, QAE26.93,.QAE26.95, QAE1020.02415 mm.Degree of protection IP code IP 64 as per IEC 529Protection class III as per EN 60 730Electrical connection Connection cablestwo-wireCore cross section.QAE26.90.35 mm 2.QAE26.90, QAE26.91, QAE26.93,.QAE26.95, QAE1020.0240.14 mm 2Cable lengthrefer to "Type summary"Mechanical connection Screwed nippleR ¼ (sealing capacity inside thread)Ambient conditions Permissible cable temperature....MaterialsQAE26.9,QAE26.90, QAE26.91,QAE26.93, QAE26.95QAE1020.024Permissible humidityImmersion stemThreaded bushingConnection cablesincl. packingQAE26.9QAE26.90QAE26.91QAE26.93QAE26.95QAE1020.024−50...+180 °C− 5...+105 °C

Internal diagram1790G01The internal diagram applies to all types.The connections are interchangeable.Dimensions (in mm)QAE26.9ø 4ø 6R ¼SW 14 SW 141790M01min. 25, max. 260ca. 31012120040QAE26.90, QAE26.91QAE26.93, QAE26.95QAE1020.024ø 4R ¼SW 14 SW 121790M02..L11240L22000Typmin.L1max.L2QAE26.9015 65 ca. 100QAE26.91QAE26.93QAE26.95151515125240465ca. 160ca. 275ca. 500QAE1020.024 15 240 ca. 275..4/4© 2000 Siemens Building Technologies AG Subject to changeBuilding Technologies Immersion temperature sensors QAE26.9... CM1N1790enHVAC Products 10.05.2006