Switching, Sensing and Control Solutions from GENTECH INTERNATIONAL LTD Grangestone Industrial Estate, Girvan, Ayrshire KA26 9PS, United Kingdom Telephone: +44 (0) 1465-713581. Fax: +44 (0) 1465 714974 Email: [email protected] Website: gentech-international.co.uk TS SERIES THERMISTOR SENSORS DESIGN FEATURES ● High or low level sensing ● Operation independent of mounting attitude ● Will sense a variety of mediums including Air ● Operating temperature range up to 100ºC ● Glass filled polypropylene or Nylon 6.6 material ● Easily installed even in confined spaces ● Universal kit for internal or external fitting ● Interface option Applications Thermistor Probe Industries Technical Specification Low coolant level sensing Automobile Oil level sensing Automobile, plant and equipment Boiler level warning Catering, vending machines Working voltage Operating temperature range Chemical, plating, process engineering Flood control Domestic appliances Reservoir high or low level sensing Automobile, medical equipment -20ºC to +100ºC Typical Response Times Glass filled Polypropylene Nylon 6.6 -20ºC to +100ºC -20ºC to +100ºC Plastic Housing Water absorption of eqillibrium Air Still to moving @ 20ºC Moving to still @ 20ºC <1 sec <1 sec Oil Air to oil @ 20ºC Oil to air @ 20ºC Air to oil @ 70ºC Oil to air @ 70ºC <1 sec 10 sec <1 sec 3 sec Water Air to water @ 94ºC Water to air @ 94ºC Air to water @ 5ºC Water to air @ 5ºC <1 sec 10 sec <1 sec 30 sec Fluid Viscosity at 20ºC and 100% RH <0.09% 5.6% at 100ºC and 100% RH <0.09% 5.6% 154ºC 245ºC Heat distortion temperature 4.5kG/cm2 (67.6 (psig) 65.0 ohms (depending on sensing medium) Environmental Specifications Thermistor probes may attain a surface temperature sufficient to cause burns if touched 12.0v dc 9.0v dc Resistance at 20ºC average Solution monitoring Operating temperature Range maximum minimum Detailed chemical resistance information for specific liquids is available on request. When the application involves highly viscous fluids, the fluid immediately around the thermistor probe will heat up thus producing an incorrect result when compared with the temperature of the bulk of the fluid. This effect would be shown as a levelling of the voltage/temperature characteristic at lower temperatures. Fluids which produce sedimentary deposits can increase the thermistor response time. TS Internal Fitting TS External Fitting Lock Washer 45 (1.8) Fixing Nut 45 (1.8) Position Orientation Indicator Thread M16x2 Pitch Fixing Nut Thread M16x2 Pitch Position Orientation Indicator The installation hole should be deburred and clean Hole ø16.5 (0.65) Sealing Washer 24 AWG (7/0.2mm) Tinned Conductor PVC Clad 13 (0.51) 20 (0.79) The installation hole should be deburred and clean Sealing Grommet (Nominal 0.5 metre length) 76.5 (3.01) Friction Relief Washer 20 (0.79) Hole ø23 (0.9) 13 (0.51) 76.5 (3.01) Application Characteristics Fig.2 shows a voltage versus temperature curve for similar mediums to those in Fig.1 based on the test circuit shown. Fig. 1 shows a typical current versus voltage curve relevant to the use of the TS level sensing probe. It can be seen that it is possible to plot a family of curves to cover a range of mediums at varying temperatures. 150 100 Volts (VDC) Current (mA) 200 Test Circuit 9v sensor 3.0 Water Oil (20-50 Multigrade) 10 Water 1.0 Oil (20-50 Multigrade) 50 Air 0 2 4 6 8 10 V out 2.0 Air 12 0 10 20 30 Volts (vdc) 40 50 60 70 80 Temperature (ºC) 90 100 110 120 Installation Notes 1. The position orientation indicator on housing should be positioned at the top when fitted. 2. Care should be taken to ensure that the product is not damaged due to excessive tightening of the fixing nut or threaded bush. Maximum torque limits are shown Model Torque Limit Maximum Container Wall Thickness Internal Fitting 3lb ft. (4 Nm) 0.394ins. (10mm) External Fitting 2lb ft. (2.67Nm) 0.16ins. (4mm) (Compression Grommet) Applications Please contact Sales at Gentech for applications relating to this product group. GENTECH INTERNATIONAL LTD Grangestone Industrial Estate, Girvan, Ayrshire KA26 9PS, United Kingdom Telephone: +44 (0) 1465-713581. Fax: +44 (0) 1465 714974 Email: [email protected] Website: gentech-international.co.uk Data Sheet Ref. TS-DS-2000-R1