Optris CT LT Specifications

optris

• Separate electronics with easy accessible programming keys and LCD

• Selectable analog output: 0/4 – 20 mA, 0 – 5 V, 0 – 10 V,

®

CT LT

TECHNICAL DATA

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

Features:

• 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, Profi bus DP, Ethernet

• Installation of up to 32 sensing heads

• CTex: Explosion proof version (ATEX)

General specifi cations

Environmental rating IP 65 (NEMA-4)

Ambient temperature –20 °C ... 180 °C (130°C to LT02) (sensing head)

Storage temperature – 40 °C ... 130 °C (sensing head)

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)

0 °C ... 85 °C (electronics)

– 40 °C ... 85 °C (electronics)

Electrical Specifi cations

Outputs / analog

Output / alarm 24 V / 50 mA (open collector)

Optional Relay: 2 x 60 V DC/ 42 V AC

Outputs / digital USB, RS232, RS485, CAN, Profibus DP, Ethernet

Output impedances mA max. 500 Ω (with 8 – 36 V DC)

Inputs Programmable functional inputs for external

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

Power Supply 8 – 36 V DC

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

optically isolated

(optional)

mV min. 100 kΩ load impedance
thermocouple 20 Ω

emissivity adjustment, ambient temperature
compensation, trigger (reset of hold functions)

–

20 mA, 0

– 5

/ 10 V, thermocouple J, K

; 0.4 A;

eff

Measurement specifi cations

Temperature range
(scalable via programming
keys or software)

Spectral range 8 – 14 μm

Optical resolution
(90 % energy)

CF-lens (optional) 0.6 mm @ 10 mm (with LT22)

System accuracy
(at ambient temp. 23 ±5 °C)

Repeatability
(at ambient temp. 23 ±5 °C)

Temperature resolution
(display)

2), 3)

NETD

Response time 150 ms (95 %)

Emissivity/ Gain
(adjustable via programming
keys or software)

Transmissivity/ Gain
(adjustable via programming
keys or software)

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

Software optris

1)

Whichever is greater

2)

At object temperatures >0 °C, ε = 1

3)

At time constant 200 ms and T

1), 2)

1), 2)

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

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

0.8 mm @ 10 mm (with LT15)

2.5 mm @ 23 mm (with LT02)

±1 % or ±1 °C

±0.5 % or ±0.5 °C

0.1 K

0.05 K (LT22 / LT15)

0.1 K (LT02)

0.100 – 1.100

0.100 – 1.100

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

®

Compact Connect

25 °C

Obj

Current draw Max. 100 mA

Optris GmbH · Ferdinand-Buisson-Str. 14 · 13127 Berlin · Germany
Phone: [phone] · Fax: [phone] · E-mail: [e-mail] · www.optris.com

optris

Specifi cations are subject to change without notice · CT LT-E2017-10-A

Optics CT LT CF, D:S = 22:1 (far fi eld = 1.5:1)

Optics CT LT SF, D:S = 15:1

(mm)

Optical specifi cations

®

CT LT

Optics CT LT CF, D:S = 2:1 (far fi eld = 2.5:1)Optics CT LT SF, D:S = 2:1

S 5 53.8 102.5 151.3 200 251.3 302.5 353.8 405

D 0 100 200 300 400 500 600 700 800

Optics CT LT SF, D:S = 15:1

S 6.5 11.6 16.6 21.7 26.7 35 43.3 51.6 59.9 68.2 76.5

D 0 100 200 300 400 500 600 700 800 900 1000

Optics CT LT SF, D:S = 22:1

S 6.5 10.9 15.2 19.6 23.9 28.3 32.6 37 41.3 45.7 50

D 0 110 220 330 440 550 660 770 880 990 1100

Versions with built-in CF lenses

(mm)

(mm)

S 7 5 3.1 2.5 5.4 9.5 13.7 17.8

D 0 10 20 23 30 40 50 60

Optics CT LT CF, D:S = 15:1 (far fi eld = 1.5:1)

(mm)

(mm)

S 7 3.9 0.8 4.7 8.6 12.5 16.4 20.3 24.2

D 0 5 10 15 20 25 30 35 40

Optics CT LT CF, D:S = 22:1 (far fi eld = 1.5:1)

(mm)

(mm)

S 7 3.8 0.6 4.4 8.2 12 15.8 19.6 23.4

D 0 5 10 15 20 25 30 35 40

Optics CT LT CF, D:S = 22:1 (far fi eld = 1.5:1)Optics CT LT SF, D:S = 22:1

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

S 6.5 5 4 3.4 5.4 8.4 13.3 18.3 23.2 28.2 33.1

D 0 25 40 50 60 75 100 125 150 175 200

Dimensions

Sensing head
(standard)

Sensing head
(built-in CF
lenses)

(mm)

(mm)

S 6.5 4.4 3.2 2.3 4.1 6.7 11.1 15.5 19.9 24.3 28.7

D 0 25 40 50 60 75 100 125 150 175 200

Electronics

(mm)

(mm)