TD Series GENERAL INFORMATION Each TD sensor includes a 0.040 x 0.050 in silicon sensing element. The element is a laser trimmed thinfilm resistive network, calibrated for sensor-to-sensor interchangeability. TD4 sensors are designed for liquid temperature sensing. TD4A is a two-terminal threaded anodized aluminum housing. TD5A is a miniature plastic package designed for small size and low cost. MOUNTING DIMENSIONS (for reference only) mm/in TD4A TD5A TEMPERATURE SENSORS CAUTION PRODUCT DAMAGE The inherent design of this component causes it to be sensitive to electrostatic discharge (ESD). To prevent ESD-induced damage and/or degradation, take normal ESD precautions when handling this product. TD Series TEMPERATURE SENSORS ABSOLUTE MAXIMUM RATINGS Operating Temperature Storage Temperature Voltage -40 to +150°C (-40 to +302°F) -55 to +170°C (-67 to +338°F) 10 VDC Continuous (24 hours) INTERCHANGEABILITY (with 1 mA maximum current) Temperature Resistance (Ω) Temperature Resistance (Ω) °C °F °C °F -40 -40 1584 ± 12 (1.9°C) +60 140 2314 ± 9 (1.1°C) -30 -22 1649 ± 11 (1.7°C) +70 158 2397 ± 10 (1.2°C) -20 -4 1715 ± 10 (1.5°C) +80 176 2482 ± 12 (1.4°C) -10 14 1784 ± 9 (1.3°C) +90 194 2569 ± 14 (1.6°C) 0 32 1854 ± 8 (1.1°C) +100 212 2658 ± 16 (1.8°C) +10 50 1926 ± 6 (0.8°C) +110 230 2748 ± 18 (2.0°C) +20 68 2000 ± 5 (0.7°C) +120 248 2840 ± 19 (2.0°C) +30 86 2076 ± 6 (0.8°C) +130 266 2934 ± 21 (2.2°C) +40 104 2153 ± 6 (0.8°C) +140 284 3030 ± 23 (2.4°C) +50 122 2233 ± 7 (0.9°C) +150 302 3128 ± 25 (2.5°C) It is recommended that resistance measurements be made of 1000 uA or less to minimize internal heating of the sensor. Measurements at currents up to 1 mA will not damage the sensor, but the resistance characteristics should be adjusted for internal heating. Equation for computing resistance: RT = RO + (3.84 x 10-3 x RO x T) + (4.94 x 10-6 x RO x T2) RT = Resistance at temperature R RO = Resistance at 0°C T = Temperature in °C Figure 2. Linear Output Voltage Circuit +Vs +10V 10K 9K + - 10K +Vs V =IV R + - 10K -Vs 1K Vo=.001R TD -Vs TD Sensor 1K 10K Linearity ± 2% (-25 °C to 85 °C) ± 3% (-40 °C to 150 °C) TD sensors can be linearized to within ± 0.2 % Repeatability ± 1 Ohm FIGURE 1. TD SERIES RESISTANCE VS TEMPERATURE CURVE ELECTRICAL INTERFACING The high nominal resistance, positive temperature coefficient and linear sensitivity characteristics of the TD Series temperature sensors simplifies the task of designing a simple circuit that can be used to linearize the voltage output to within 0.2% or a ± 0.4 °C error over a range of 40 to +150 °C (-40 to +302 °F). Figure 2 is a simple circuit that can be used to linearize the voltage output to within 0.2% or a ± 0.4 °C error over a range of -40 to +150 °C (-40 to +302 °F). Figure 3 illustrates one method of detecting one particular temperature. The potentiometer in the comparator circuit can be adjusted to correspond to the desired temperature. Figure 3. Adjustable Point (Comparator) Interface Vs=5V 2K TD Sensor 2K 5K RT 2K + - Vo 2K 2 Honeywell MICRO SWITCH Division For application help, call 1-800-537-6945 Temperature Sensors HEL-700 WARRANTY and REMEDY Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Contact your local sales office for warranty information.If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyers sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Specifications may change at any time without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. While we provide application assistance, personally, through our literature and the Honeywell website, it is up to the customer to determine the suitability of the product in the application. For application assistance, current specifications, or name of the nearest Authorized Distributor, contact a nearby sales office. Or call: 1-800-537-6945 USA 1-800-737-3360 Canada 1-815-235-6847 International FAX 1-815-235-6545 INTERNET www.honeywell.com/sensing [email protected] MICRO SWITCH Honeywell Inc. 11 West Spring Street Freeport, Illinois 61032 Printed with Soy Ink on 50% Recycled Paper PLATINUM RTDs