MK33-W Capacitive Humidity Sensor Optimal for oil measurement applications Benefits & Characteristics High chemical resistance Very low drift Wide temperature range High humidity stability Condensation resistant Suitable for extreme environments Fast recovery time Customer specific sensor available upon request 1) Illustration SIL Au/Cu-wire L L 1) For actual size, see dimensions Technical Data Dimensions (L x W x H / H2 in mm): SIL 10.8 x 3.81 x 0.4 / 1.2 Au/Cu-wire 10.8 x 3.81 x 0.4 / 0.8 Operating humidity range: 0 % RH to 100 % RH (maximal dew point +95 C) Operating temperature range: -40 C to +190 C Capacitance (C ):* 300 pF 40 pF (at 30 % RH and +23 C) 30 Sensitivity (at C = 300 pF): 0.45 pF/% RH (15 % RH to 90 % RH) 30 Loss factor: < 0.01 (at 23 C, at 10 kHz, at 90 % RH) Linearity error: < 2 % RH (15 % RH to 90 % RH at +23 C after one point calibration) Hysteresis: < 2 % RH Response time t : < 6 s (50 % RH to 0 % RH at +23 C) 63 Temperature dependence (typical): % RH = (B1 x % RH + B2) x T C + (B3 x % RH + B4) B1 = 0.0011 1/ C B2 = 0.0892 % RH/ C B3 = -0.0268 B4 = -2.079 % RH Measurement frequency: 1 kHz to 100 kHz (recommended 10 kHz) Maximal supply voltage: < 12 V AC pp Signal form: alternating signal without DC bias Connection:* CuP-SIL-wire post-plated with Sn, 10 mm or Au/Cu-wire, 0.4 mm * Customer specific alternatives available The calibration of the sensor must be done 5 days after soldering at the earliest. DHMK33-W E2.2 1/2 H2 H W W HMK33-W Capacitive Humidity Sensor Optimal for oil measurement applications Characteristic Curve Characteristic curve - MK33 340.0 330.0 320.0 310.0 300.0 290.0 280.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 Relative humidity %RH Order Information - SIL (CuP-SIL-wire post-plated with Sn, 10 mm) MK33 (300pF 40pF) Order code 040.00192 Order Information - Au/Cu-wire, 0.4 mm MK33-W (300pF 40pF) Order code 040.00180 Innovative Sensor Technology IST AG, Stegrtistrasse 14, CH-9642 Ebnat-Kappel, Switzerland, Phone: +41 (0) 71 992 01 00 Fax: +41 (0) 71 992 01 99 E-mail: info ist-ag.com Web: www.ist-ag.com All mechanical dimensions are valid at 25 C ambient temperature, if not differently indicated All data except the mechanical dimensions only have information purposes and are not to be understood as assured characteristics Technical changes without previous announcement as well as mistakes reserved The information on this data sheet was examined carefully and will be accepted as correct No liability in case of mistakes Load with extreme values during a longer period can affect the reliability The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner Typing errors and mistakes reserved Product specifications are subject to change without notice All rights reserved DHMK33-W E2.2 2/2 Capacitance pF