Optris CTfast Specifications

optris

®

CTfast LT

TECHNICAL DATA

Precise non-contact
temperature measurement
from –50 °C to 975 °C
(–58 °F to 1787 °F)

Features:

• One of the smallest infrared sensors worldwide with extrem short response time
down to 6 ms (90 % signal)

• Fast analog output (0/4 – 20 mA, 0 – 5/10 V) with smart real time data processing

• Instant digital 0/10 V output with a response time of 4 ms (50 % signal)

• Continuous process monitoring with an unchoppered sensor system
Note: Conventional fast pyroelectrical infrared sensors with mechanical chopper
see processes only part of the time

• Easy to assemble in multiple arrays for line scanning of small and fast objects
(hot spot detection) using a RS485 bus communication

• Rugged up to 120 °C (248 °F) ambient temperature without cooling

General specications

Environmental rating IP 65 (NEMA-4)

Ambient temperature –20 °C ... 120 °C (–4 °F ... 248 °F) (sensing head)

Storage temperature – 40 °C ... 120 °C (–40 °F ... 248 °F) (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 (1.4 oz) (sensing head) /

0 °C ... 85 °C (32 °F ... 185 °F) (electronics)

– 40 °C ... 85 °C (–40 °F ... 185 °F) (electronics)

420 g (14.8 oz) (electronics)

Electrical Specications

Outputs / analog 0 / 4 – 20 mA, 0 – 5 / 10 V, thermocouple J, K, alarm

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

Outputs / digital 0 / 10 V (10 mA)

Digital interface 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

optional: relay: 2 x 60 V DC/ 42 V AC;

0.4 A; optically isolated

(optional)

mV min. 100 kΩ load impedance, thermocouple 20 Ω

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

(3.3 ft [standard], 9.8 ft, 26.2 ft, 49.2 ft)

Measurement specications

Temperature range
(scalable via programming
keys or software)

Spectral range 8 – 14 μm

Optical resolution
(90 % energy)

System accuracy (at ambient
temp. 23 ±5 °C) (23 ±41 °F)

Repeatability (at ambient temp.
23 ±5 °C) (23 ±0.5 °F)

Temperature resolution LT15F 0.2 K

Response time Analog output (90 %)

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 with dynamic noise compression

2)

At object temperatures ≥20 °C (≥68 °C)

3)

At time constant 100 ms with smart averaging and T

–50 °C ... 975 °C
(–58 °F ... 1787 °F)

LT15F 15:1
LT25F 25:1

±1 % or ±2 °C
(±1 % of reading +3.6 °F)

±0.75 % or ±0.75 °C
(±0.75 % of reading +1.4 °F)

LT25F 0.4 K

LT15F 9 ms
LT25F 6 ms

Digital output (50 %)
LT15F 4 ms
LT25F 3 ms

0.100 – 1.100

0.100 – 1.100

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

1), 2)

2), 3)

2), 3)

®

Compact Connect

1), 2)

25 °C (T

Obj

77 °F)

Obj

Power Supply 8 – 36 V DC

Current draw Max. 100 mA

Optris Infrared Sensing, LLC · 200 International Drive, Suite 170 · Portsmouth · NH 03801 USA
Phone.: [phone] · E-Mail: [e-mail] · www.optris.com

optris

Optical specications

®

CTfast LT

15:1 optics

S7 (0.28)8 (0.31)

D 0

(0)

100

(3.94)

13

(0.51)

200

(7.87)

20

(0.79)

300

(11.8)

27

(1.06)

400

(15.7)

33

(1.30)

500

(19.7)

40

(1.57)

600

(23.6)

47

(1.85)

700

(27.6)

53

(2.09)

800

(31.5)

mm
(in)

mm
(in)

15:1 optics with CF-lens

25:1 optics 25:1 optics with CF-lens

6.5

9.9

13.3

16.7

20.1

23.5

27

30.4

33.8

37.2

40.6

44

1000

(1.73)

1100

(43.3)

mm
(in)

mm
(in)

S

D 0

(0.26)

(0)

(0.39)

100

(3.94)

(0.52)

200

(7.87)

(0.66)

300

(11.8)

(0.79)

400

(15.7)

(0.93)

500

(19.7)

(1.06)

600

(23.6)

(1.20)

700

(27.6)

(1.33)

800

(31.5)

(1.46)

900

(35.4)

(1.60)

(39.4)

Dimensions

Sensing head

(standard)

Electronics

3.9

S7 (0.28)

(0.15)

D 0

(0)5 (0.20)

6.5

3.5

S

(0.26)

(0.14)

D 0

(0)4 (0.16)8 (0.31)

0.8

(0.03)

10

(0.39)

0.5

(0.02)4 (0.16)

12

(0.47)

4.7

(0.19)

15

(0.59)

7.5

(0.30)

16

(0.63)

8.6

(0.34)

20

(0.79)

(0.43)

(0.79)

12.5

16.4

20.3

24.2

35

24.1

35

(0.95)

40

(1.57)

28.5

(1.12)

40

(1.57)

mm
(in)

mm
(in)

(mm)

(mm)

(0.49)

(0.65)

(0.80)

25

30

(0.98)

(1.18)

(1.38)

11

15.4

19.8

(0.61)

(0.78)

(0.95)

20

25

30

(0.98)

(1.18)

(1.38)

Compact Connect software

• Software for easy sensor setup and remote controlling, supports

multi tasking

• Graphic display for temperature trends and automatic data logging for
analysis and documentation with 1 ms response time

• Adjustment of signal processing functions and programming of outputs
and functional inputs of the sensor

• Automatic emissivity adjustment

• The software CompactConnect allows to customize the sensor to
application needs of the user

Specications are subject to change without notice · CTfast LT-US2017-10-A