CTfast LT0 pages

More Precision.
optris® CTfast
Precise noncontact temperature measurement
from -50 to 975°C

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 ambient temperature without
cooling

General specifications
Environmental rating
Ambient temperature
Storage temperature

Measurement specifications

IP 65 (NEMA-4)
sensing head: -20 - 120°C
electronics: 0 - 85°C
sensing head: -40 - 120°C
electronics: -40 - 85°C

Temperature range (scalable via
programming keys or software)
Spectral range

8 - 14 µm

Optical resolution (90% energy)

Relative humidity

10 - 95%, non condensing

System accuracy

Vibration (sensor)

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

(at ambient temperature 23 ±5°C

Shock (sensor)

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

Weight

sensing head 40 g
electronics 420 g

Repeatability
(at ambient temperature 23 ±5°C)
Temperature resolution (NETD)

Electrical specifications
Analog output
Alarm output

LT25F 25:1
±1% oder ±2°C1), 2)
±0.75% oder ±0.75°C1), 2)
LT15F 0.2 K2), 3)
LT25F 0.4 K2), 3)

LT15F 9 ms

thermocouple J, K
Response time

4)

LT25F 6 ms
digital output (50%):

0/10 V (10 mA)
Digital output

LT15F 15:1

analog output (90%):

0/4 - 20 mA, 0 - 5/10 V or
Open - collector (24V / 50mA)

-50°C bis 975°C

LT15F 4 ms

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

LT25F 3 ms

0.4 A; optically isolated
(optional)
Output impedances

USB, RS232 or RS485 , CAN, Profibus DP,
Ethernet

programming keys or software)

mA max. 500 W 36 V DC)
(with 8 -

Digital interface

Emissivity/Gain (adjustable via

programming keys or software)

mV min. 100 k W
load impedance

peak hold, valley hold,
Signal processing (parameter adjustable via
average; extended hold
programming keys or software,
function with threshold and
respectively)
hysteresis

thermocouple 20 W
programmable functional inputs for external
Inputs

Transmissivity/Gain (adjustable via

emissivity adjustment, ambient temperature

1)

compensation, trigger (reset of hold functions)

2)

Cable length

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

Current draw

max. 100 mA

Power supply

8 - 36 V DC

0.100 - 1.100
0.100 - 1.100

whichever is greater with dynamic noise compression
at object temperatures
20°C
3)
at time constant 100 ms with smart averaging and Tobj 25°C
4)

with dynamic adaption at low signal levels