Description
The TIMA is an infrared temperature sensor for non-contact measurement.
It measures on moving, hot or delicate surfaces without touching the medium – where a protective tube would be in the way or cannot be installed at all. Housing, display and the two limit contacts are the same as on the screw-in sensors of the series.
The sensor evaluates infrared radiation in the spectral range 8 … 14 µm and covers -40 … +1000 °C, with a minimum span of 100 °C. The optical resolution is 15:1. Accuracy is ±1.5 °C or ±1.5 % – whichever is greater applies – repeatability ±0.75 °C or ±0.75 %, resolution 0.1 K. Emissivity and transmissivity are adjustable from 0.100 to 1.100 in software. The response time is 30 ms (t90) at 10 measurements per second.
The output is 4 … 20 mA with HART in 3-wire technology, current range 3.8 … 20.5 mA, with a fault signal at 3.6 mA (short circuit) and 21 mA (break). Added to that: a 4-digit 7-segment display in the head, which rotates through 330°, and two limit contacts, PNP or NPN, 30 VDC / 200 mA. Supply is 24 VDC ±10 % through an eight-pin M12×1 connector – the only connection on this product.
Mechanically: process connection from 1/4" to 1" as well as 1/4NPT to 1/2NPT, protective tube in 1.4571, Ø 6 × 0.5 mm, 100 mm neck tube optional, PBT GF30 housing, stainless steel measuring head, weight approx. 240 g, protection at least IP 65 with encapsulated boards. Vibration to IEC 68-2-6, shock to IEC 68-2-27.
Three things belong in the planning. The measuring spot grows with distance – 6.5 mm at the front edge, 16.6 mm at 200 mm, 76.5 mm at one meter; the target must be at least as large as the spot. The ambient temperature is not the medium temperature – the electronics in the head tolerate -20 … +80 °C, the measuring head -20 … +120 °C. And this product measures against the open atmosphere, system pressure 0 bar; it does not belong in a pressurized space, whereas the other sensors of the series withstand PN 25. After 10 minutes of warm-up the reading is dependable.
Programming requires the DEV-KMA configurator with the TrComm software. A declaration of conformity is available on request. No explosion protection is documented.
Advantages at a glance
- Non-contact measurement from -40 to +1000 °C
- Optical resolution 15:1, spectral range 8 … 14 µm
- Accuracy ±1.5 °C or ±1.5 %, resolution 0.1 K
- Response time 30 ms, 10 measurements per second
- 4 … 20 mA with HART, 3-wire
- Display in a head that rotates through 330°
- Two limit contacts, PNP or NPN
- Emissivity adjustable in software
- Protection at least IP 65