EURO QUARTZ TS SERIES Miniature Quartz Temperature Sensors 160kHz to 350kHz FEATURES Frequency based temperature sensing High shock resistance Low ageing DESCRIPTION The TS quartz temperature sensors are tuning fork quartz crystals vibrating in a torsional mode. The crystals are designed so that their frequency is both extremely sensitive to temperature and highly linear. For example. the 172.0kHz design has a sensitivity of around +46.4ppm/°C. This high sensitivity enables the detection of fine temperature changes, the degree of which is dependant upon the implementation. Further, this frequency-based technique has the advantage of being immune to amplitude noise in the measurement system, a feature not shared by thermocouple, thermistor or RTD based temperature sensing techniques. Lastly, remote temperature sensing is possible by using an antenna to pick up the frequency of the EM waves emitted by the sensor. TS1 and TS2 are available with the following lead configurations: APPLICATIONS High resolution temperature measurement Temperature-critical process control and monitoring Wireless temperature measurement Human health monitoring DIMENSIONS For detailed dimensions and lead spacing see the data sheets for CX1, CX2, CX3 and CX6 crystals STANDARD FREQUENCIES 172.0kHz, 190.5kHz, 262.144kHz, 300.0kHz, 325.0kHz, and 350.0kHz. TERMINATIONS - PLATING Designation SM1 SM2 SM3 SM4 SM5 Termination Gold Plated (Lead Free) Solder Plated Solder Dipped Solder Plated (Lead Free) Solder Dipped (Lead Free) HOW TO ORDER TS TEMPERATURE SENSORS TS2 TS1 TS2 TS3 TS6 = = = = CX1 CX2 CX3 CX6 - S - C SM1 - 'S' if special or Blank = glass lid 02 = End Lead custom design, C = ceramic lid 03 = Side Lead 04 = Half Side Lead Blank if standard SM1 = Gold plated * SM2 = Solder plated SM3 = Solder dipped Leaded & SMD SM4 = Solder plated * Leaded & SMD SM5 = Solder dipped * SMD only * = Lead free SMD only 262.144K, Frequency K = kHz M = MHz 200 / Calibration Tolerance @25°C I Operating Temp. Range C = -10° ~ +70°C I = -40° ~ +85°C M = -55° ~ +125°C S = Customer specified EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk EURO QUARTZ TS SERIES Miniature Quartz Temperature Sensors SPECIFICATION 160kHz to 350kHz FREQUENCY vs TEMPERATURE Specifications stated are typical at 25°C unless otherwise indicated. Tighter specifications are available. Specifications may change without notice. Please contact factory. 262.144kHz Frequency vs. Temperature Parameters will vary according to frequency. Standard Frequencies1: 172.0kHz 262.144kHz Standard Calibration Tolerances2: ±20ppm (0.02%) ±20ppm (0.02%) ±500ppm (0.02%) ±500ppm (0.02%) ±1000ppm (0.02%) ±1000ppm (0.02%) Quality Factor (Q): 170,000 130,000 Motional Capacitance C1: 0.3fF 0.3fF Motional Resistance R13: 22kΩ 15kΩ Shunt Capacitance C0: 1.4pF 1.0pF Shock, Survival: 5000g Vibration, Survival: 20g, 10~2000Hz swept sine Maximum Process Temp: Surface Mount: 260°C for 20 seconds Through-Hole: 175°C for 10 seconds 1. 2. 3. Other frequencies available, contact Euroquartz sales. Other calibration tolerances available, contact Euroquartz sales. Motional Resistance varies with temperature. FREQUENCY-TEMPERATURE MODEL Although the frequency-temperature characteristic of the TS sensor is nearly linear it is not exactly so. A better model is a second order polynomial in temperature: F(T)=F(T0)[1+ a(T-T0) + b(T-T0)2] While higher order polynomial mode are possible, a second order model is uaually sufficient. Taking T0=25°C, typical values for a and b are as follows: Frequency kHz 172.000 262.144 a ppm/°C 46.4 34.5 b ppm/°C2 0.036 0.018 EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk