ZTP-135L Thermopile IR Sensor This thermopile sensor is used for non-contact Features surface temperature measuring. The ZTP-135L 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 Applications Included ambient temperature - (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 -20 840.0 875.5 911.6 -15 657.2 684.0 711.4 2 Chip Size 1.8 x 1.8 mm -10 512.6 532.9 553.5 2 Diaphragm Size 1.4 x 1.4 mm -5 399.8 415.1 430.6 2 Active Area 0.7 x 0.7 mm 0 312.2 323.8 335.5 Internal 42 60 78 kW 25C 5 244.7 253.4 262.2 Resistance 10 192.6 199.2 205.9 Resistance T.C 0.12 %/C 15 152.3 157.4 162.5 Responsivity 42 58 78 V/W 500K, 1 Hz 20 121.2 125.1 129.0 Responsivity T.C -0.10 %/C 25 97.00 100.0 103.0 Noise Voltage 32 nV rms R.M.S., 25C 30 77.95 80.44 82.95 1/2 NEP 0.55 nW/Hz 500K, 1 Hz 35 63.03 65.12 67.21 1/2 Detectivity 1.27 E08 cmHz /W 500K, 1 Hz 40 51.27 53.03 54.79 Time Constant 25 ms 45 41.96 43.44 44.93 50 34.54 35.79 37.05 55 28.58 29.64 30.72 60 23.77 24.68 25.60 65 19.87 20.64 21.43 70 16.68 17.35 18.02 75 14.06 14.64 15.22 Thermistor for Temperature Compensation 80 11.90 12.40 12.90 85 10.11 10.54 10.98 Parameter Limits Units Condition 90 8.619 8.994 9.376 Min Typ Max 95 7.373 7.699 8.032 Resistance 97 100 103 kW Tol. :3%, 25C 100 6.327 6.611 6.903 Beta - Value 3920 3960 4000 K Tol. :1%, Defined at 25C/50C Absolute Maximum Ratings Operating Temperature -20C ~ 100C Storage Temperature -40C ~ 120C