Optris CT LT and CTex LT

General Specifications

Environmental rating

IP 65 (NEMA-4)

Ambient temperature1)

–20 °C ... 180 °C (130°C to LT02) (sensing head)
–20 °C ... 85 °C (electronics)

Storage temperature

–40 °C ... 130 °C (sensing head)
–40 °C ... 85 °C (electronics)

Relative humidity

10 – 95 %, non condensing

Vibration (sensor)

IEC 68-2-6: 3 G, 11 – 200 Hz, any axis

Shock (sensor)

IEC 68-2-27: 50 G, 11 ms, any axis

Weight

40 g (sensing head) / 420 g (electronics)

Electrical Specifications

Outputs / analog

Channel 1:0/4 – 20 mA, 0 – 5/ 10 V, thermocouple J, K Channel 2: sensind head temperature (–20 °C ... 180 °C as 0 – 5 V or 0 – 10 V), alarm output

Output / alarm

24 V / 50 mA (open collector)

Optional

Relay: 2 x 60 V DC/ 42 V AC_eff; 0.4 A; optically isolated

Outputs / digital

USB, RS232, RS485, CAN, Profibus DP, Ethernet (optional)

Output impedances

mA max. 500 Ω (with 8 – 36 V DC) mV min. 100 kΩ load impedance thermocouple 20 Ω

Inputs

Programmable functional inputs for external emissivity adjustment, ambient temperature compensation, trigger (reset of hold functions)

Cable length

1 m (standard), 3 m, 8 m, 15 m

Power Supply

8 – 36 V DC

Current draw

Max. 100 mA

Measurement specifications

Temperature range (scalable via programming keys or software)

–50 °C ... 975 °C (LT22)
–50 °C ... 600 °C (LT15)
–50 °C ... 600 °C (LT02)
–50 °C ... 600 °C (LT02)

Spectral range

8 – 14 μm

Optical resolution (90 % energy)

22:1 (precision glass optics)
15:1 (precision glass optics)
2:1 (with flat front window)

CF-lens (optional)

0.6 mm @ 10 mm (with LT22)
0.8 mm @ 10 mm (with LT15)
2.5 mm @ 23 mm (with LT02)

System accuracy ^2),3)
(at ambient temp. 23 ±5 °C)

±1 % or ±1 °C

Repeatability^2),3)
(at ambient temp. 23 ±5 °C)

±0.5 % or ±0.5 °C

Temperature resolution (display)

0.1 K

NETD^{3), 4)}

0.05 K (LT22 / LT15)
0.1 K (LT02)

Response time

150 ms (95 %)

Emissivity/ Gain
(adjustable via programming keys or software)

0.100 – 1.100

Signal processing (parameter adjustable via programming keys or software, respectively)

Peak hold, valley hold, average; extended hold function with threshold and hysteresis

Software

optris® Compact Connect

¹⁾ The LCD displays capacity may be limited at ambient temperatures below 0 °C.
²⁾ Whichever is greater
³⁾ At object temperatures >0 °C, ε = 1
⁴⁾ At time constant 200 ms and T_Obj 25 °C