LFS1K0.1107.2I.B.070-6.S Innovative Sensor Technology

LFS1107 Conductivity Sensor For various conductivity measurement applications Benefits & Characteristics Very wide conductivity range Small size Integrated RTD for temperature measurement and/ 4 electrode measurement or compensation Circular electrodes 1) Illustration W L Lw H2 H 1) For actual size, see dimensions Technical Data 2) Conductivity range :* 10 S/cm to 200 mS/cm 2) -1 Cell constant :* typical 0.42 cm Measurement frequency range: 100 Hz to 300 Hz Maximum excitation voltage (between pin 2 and pin 6): < 0.7 Vpp (Electrolysis of the analyte has to be avoided. Max. voltage depends on the solution) 3) Operating temperature range : -30 C to +100 C Temperature sensor:* Pt1000 Temperature coefficient (Pt1000): 3850 ppm/K 4) Measuring current (Pt1000) : 0.3 mA Temperature sensor accuracy (dependent on temperature IST AG reference range):* IEC 60751 F0.3 B IEC 60751 F0.6 C Connection:* Cu/Ag-wires, PTFE-insulated, AWG 30 Pt/Ni-wires, 0.2 mm DCLFS1107 E2.3.1 Conductivity LFS1107 1/3Temperature dependence of resistivity: according to IEC 60751: 2 3 -50 C to 0 C R(T) = R x (1 + A x T + B x T + C x (T-100) x T ) 0 2 0 C to 150 C R(T) = R x (1 + A x T + B x T ) 0 -3 -1 A = 3.9083 x 10 C -7 -2 B = -5.775 x 10 C -12 -4 C = -4.183 x 10 C R = resistance value in at T = 0 C 0 T = temperature in accordance with ITS90 Storage temperature: -20 C to +100 C 2) Geometry of the containing chamber or vessel in the final application can affect the cell constant and measurement range. Please contact IST AG for more information. 3) Although operating temperature is under 100 C, the device will temporally withstand higher temperatures. Contact IST AG for more information. 4) Self-heating must be considered. Note: Aggressive media can influence the long-term stability. Chemical resistance of the sensor in the end application must be tested by the customer. * Customer-specific alternatives available Pin Assignment: 1 2 3 4 5 6 1 2 3 4 5 6 V+ I+ T T V- I- 1 2 I: applied current V: measured voltage T: temperature sensor Product Photo: DCLFS1107 E2.3.1 Conductivity LFS1107 2/3