ZTP-135 Thermopile IR Sensor This thermopile sensor is used for non-contact Features surface temperature measuring. The ZTP-135 model consists of thermo-elements, flat IR filter, Non-contact measurement a thermistor for temperature compensation and a hermetically-sealed small-size package. There Wider surface area measurement is also a variety of filters available to maximize performance in specific applications Small-size sensor package Included ambient temperature - Applications (thermistor) sensor for compensation Patient monitoring High sensitivity Ear & Tympanic thermometers Fast response time Occupancy detection Low cost HVAC Appliance Amphenol Advanced SensorsSpecifications Thermopile Chip Thermistor Resistance (R-T Table) Parameter Limits Units Condition T ambient ( C) Rmin (kW) Rcent (kW) Rmax (kW) Min Typ Max -40 267 284.7 303.2 -35 197.2 209.6 222.5 2 Chip Size 1.8 x 1.8 mm -30 147.1 155.9 165 2 Diaphragm Size 1.4 x 1.4 mm -25 110.8 117.1 123.6 2 Active Area 0.7 x 0.7 mm -20 84.16 88.68 93.35 Internal 42 60 78 kW 25C -15 64.46 67.73 71.11 Resistance -10 49.74 52.13 54.59 Resistance T.C 0.12 %/C -5 38.65 40.41 42.21 Responsivity 42 60 78 V/W 500K, 1 Hz 0 30.24 31.543 32.86 Responsivity T.C -0.10 %/C 5 23.81 24.772 25.75 Noise Voltage 32 nV rms R.M.S., 25C 10 18.86 19.58 20.3 1/2 NEP 0.53 nW/Hz 500K, 1 Hz 15 15.03 15.56 16.1 1/2 Detectivity 1.30 E08 cmHz /W 500K, 1 Hz 20 12.04 12.44 12.84 Time Constant 25 ms 25 9.7 10 10.3 30 7.823 8.082 8.342 Thermistor for Temperature Compensation 35 6.342 6.566 6.791 40 5.168 5.361 5.557 Parameter Limits Units Condition 45 4.233 4.4 4.569 Min Typ Max 50 3.484 3.629 3.776 55 2.882 3.007 3.135 Resistance 9.7 10 10.3 kW Tol. :3%, 25C 60 2.396 2.504 2.615 Beta - Value 3930 3970 4001 K Tol. :1%, Defined 65 2.0009 2.095 2.192 at 25C/85C 70 1.679 1.7612 1.8458 75 1.4153 1.4871 1.5612 Absolute Maximum Ratings 80 1.1984 1.261 1.3264 85 1.0193 1.0745 1.1317 Operating Temperature 90 0.8707 0.9193 0.9697 -20C ~ 100C 95 0.7469 0.7898 0.8344 100 0.6433 0.6812 0.7208 Storage Temperature 105 0.5562 0.5899 0.625 -40C ~ 120C