TPS 334 is a thermopile sensor produced by PerkinElmer Company. It uses a 0.7 x 0.7 mm2 chip and a 30 kΩ thermistor as a temperature reference. The round window opening is equipped with a 5.5 µm longwave (standard) infrared filter. The sensor shows a flat sensitivity characteristic over the wavelength. TPS 334 can be equipped with a G9 (8.14 µm) filter for precision remote temperature sensing (TPS 334 G9).
The TPS334 is a thermopile infrared detector housed in a TO‑5 package. It features a 0.7 × 0.7 mm absorber area, a 30 kΩ thermistor reference, and a standard 5.5 µm long‑pass infrared filter. The detector is suited for temperature‑measurement applications such as pyrometers and ear thermometers.
The document provides detailed electrical, optical, and mechanical characteristics, handling requirements, and quality‑system information. It also lists the typical performance parameters and environmental limits for the sensor.
| Sensitive area | 0.7 × 0.7 mm |
|---|---|
| Window size | 25 mm diameter |
| DC sensitivity | 35 V/µW |
| Resistance | 75 kΩ |
| Noise | 38 nV/√Hz |
| NEP | 1.2 nW/√Hz |
| Detectivity (D*) | 0.6 × 10⁸ cm·Hz¹ᐟ²/W |
| Temperature coefficient of sensitivity | 0.02 %/K |
| Time constant | 25 ms |
| Operating temperature | -40 °C to 100 °C |
| Thermistor resistance (25 °C) | 30 kΩ |
| Beta value | 3964 K |
| Field of view | 60° at 50 % points |
The detector has a 0.7 × 0.7 mm absorbing area.
It can operate from –40 °C to 100 °C.
The typical DC sensitivity is 35 V/µW.
The sensor’s time constant is 25 ms.