|
|
Programmable connection head transmitter for Pt100/Pt1000 and thermocouples with a variety of output signals an an LCD Display
The LKM 154 is a programmable transmitter for Pt100/Pt1000 and various thermocouples with an LCD display installed in a special connection head. It converts the temperature signal linearily with high accuracy into a standard current signal or an output voltage. A battery variant without an output signal is also available. The LKM 154 can be integrated with temperatue sensors using an M12 connection thread to form a complete measurument module. For the range an adjustment capability of at least 20°C is required. The transmitter can be configured by the customer using a programming module that can be obtained
separatly. No recalibration is required. The output signals can similary be scaled as required. Using this programming module
it is also possible to record the measurement data digitally with a PC. The different variants are identified by an additional letter. We can also supply complete temperature sensors with this transmitter.
Construction
U- Display and output signal 0...10V, serial interface (external voltage supply 24 V)
I- Display and Output 4...20 mA, serial Interface (Voltage supply from loop)
B- Display (Voltage supply 9V battery, shutdown after 5 min.)
Connection head
BUZH
Connection head
BUZH
Protection classification
IP 65 according DIN 60529
Input
Pt100
Pt1000
Thermocouple Typ K
Thermocouple Typ T
Thermocouple Typ J
Thermocouple Typ S
on inquiry
Circuitry
2 wire circuit
3 wire circuit
4 wire circuit
Output
0 ... 10V
4 ... 20mA
Measuring range
Typ K -200°C ... +1370°C
Typ T -200°C ... +400°C
Typ J -200°C ... +1200°C
Typ S 0°C ... +1760°C
Pt100/Pt1000 -200°C ... 835°C
Range
domain of definition of sensor, minimal 20°C *
Zero point
as defined for the sensor*
Resolution
0.1°C/1°C° *
Display
LCD 5-digit, 10mm caracter height, rotatable
Test current
0.2mA
Test current
0.2mA
Sensor fracture
approx. 11V for voltage output
approx. 21 mA for current loop
Shorted Sensor
at resistance sensors approx. 0V for voltage output and approx 3 mA for current loop;
Temperature value on fracture point for thermocouples
Permissible ripple
< 10 %
Messgenauigkeit
0,5°C±1Digit
Accuracy
0.2°C±1Digit for resistance sensors
0.5°C for thermocouples
0,2°C ±1Digit for resistance sensors
0,5°C for thermocouples
Accuracy
0.2°C±1Digit for resistance sensors
0.5°C for thermocouples
0,2°C ±1Digit for resistance sensors
0,5°C for thermocouples
Temperature drift
<150ppm/°C
Operating temperature range
0°C ... +60°C
Mounting
Thread M24x1.5
Power supply
3.3V Lithium (CR123)
Supply voltage
24VDC ±30% reverse protection
Sampling rate
>0.25/s*
Battery operation time
>1000h on automatic switch off after 3 min *
Features
Maximum, Minimum, Hold
Weight
approx. 290g
cold-junction compensation
internal
Interface
* programmable
