CT LT0 pages

optris® CT LT

FEATURES

Precise non-contact temperature measurement
from -50°C to 975°C

One of the smallest infrared sensors worldwide
with 22:1 optical resolution
Rugged and usable up to 180°C ambient
temperature without cooling
Separate electronics with easy accessible
programming keys and LCD backlit display
Selectable analog output: 0/4-20 mA, 0-5 V,
0-10 V, thermocouple type K or J
Optional USB, RS485, RS232 interface, relay
outputs (2 x optically isolated), CAN-Bus,
Profibus DP, Ethernet
Installation of up to 32 sensing heads
CTex: Explosion proof version (ATEX)

General Specifications
Environmental rating
Ambient temperature

Measurement Specifications
Temperature range
(scalable via programming keys or
software)

IP 65 (NEMA-4)
-20°C to 180°C (130°C at LT02)
(sensing head)
0°C to 85°C (electronics)

-50°C to 975°C (LT22)
-50°C to 600°C (LT15)
-50°C to 600°C (LT02)

Spectral range

8-14 μm

Storage temperature

sensing head: -40 to 180°C (130°C at
LT02)
electronics: -20°C to 85°C

Optical resolution
(90% energy)

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

Relative humidity

10 - 95%, non condensing

CF-lens (optional)

Vibration (sensor)

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

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

IEC 68-2-27: 50 G, 11 ms,
any axis

System accuracy1),2)
(at ambient temp. 23 ±5°C)

± 1% or ± 1°C

Shock (sensor)

sensing head 40 g
electronics 420 g

Repeatability1),2)
(at ambient temp. 23 ±5°C)

± 0.5% or ± 0.5°C

Weight

Temperature resolution (display)

0.1°C

Electrical Specifications

NETD2),3)

0.05 K(LT22/LT15)
0.1 K (LT02)

Outputs/analog

Response time

150 ms (95 %)

Emissivity/Gain
(adjustable via programming keys
or software)

0.100 - 1.100

Transmissivity/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

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 ACeff; 0.4 A;
optically isolated

Outputs/digital (optional)

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

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

Current draw

2)

max. 100 mA

Power Supply

whichever is greater
at object temperatures > 0°C, Ɛ = 1
3)
at time constant 200 ms and TObj 25°C

1)

8-36 V DC

Innovative Infrared Technology