
MESO-L
T
1
T
2
mV
RTD
(Pt100)
T/C
RTD
100%
0%
RTD
RTD
(Pt100)
100%
0%
A
B
B
C
SPECIALISTS IN INDUSTRIAL TEMPERATURE MEASUREMENT
Universal
HART-compatible
Input connections
RTD
4-wire connection
2-wire Transmitter
MESO-L is a smart and universal 2-wire transmitter for temperature and other
measurement applications. MESO-L is fully HART-compatible, with communication through the HART protocol.
• Utilizes HART protocol for remote conguration and monitoring
• Communicates with HART Communicator or PC via modem
• Fully universal, linearized and isolated
• Accepts RTD, T/C, mV and ohm
• Sensor error correction
• 50 point linearization – any sensor can be matched
• Consistent sensor break function
• Simplied loop check-up with calibration output
• Full access to all features while in operation
• Low sensor isolation detection
• MEPRO, easy-to-use Windows conguration software
• Integrated in Emerson AMS and Siemens PDM systems
RTD
3-wire connection
Pt100
Diff temperature T1 > T2
Potentiometer
3-wire connection
Potentiometer
4-wire connection
Voltage
mV
Thermocouple
Output connections
R
I
OUT
LOAD
1)
Test
A-B and B-C are possible
connections for HART modem or Communicator
1)
Ri ≤ 10 Ω
Output load diagram
R
(Ω)
LOAD
Specications:
Input RTD and Resistance 3-,4-wire connection
1)
Pt100
and D1002) -200 to +1000 °C / -328 to +1832 °F
Pt10001) -200 to +200 °C / -328 to +392 °F
PtX 10 ≤ X ≤ 10001) Upper range depending on X value
3)
Ni100
3)
Ni1000
Potentiometer / resistance 0 to 2000 Ω
Input Thermocouples B, C, E, J, K, L, N, R, S, T, U
Input Voltage -10 to +500 mV
Sensor failure / Low isolation User denable output
Adjustments - Zero Any value within range limits
Adjustments - Minimum spans
Pt100, Pt1000, Ni100, Ni1000 10 °C / 18 °F
Potentiometer 10 Ω
T/C, mV 2 mV
Output 4-20 / 20-4 mA
Operating temperature -20 to +70 °C / -4 to +158 °F
Galvanic isolation 1500 VAC, 1 min
Power supply 11 to 42 VDC
Typical accuracy ±0.1% of temperature span
Mounting Rail acc. to DIN EN50022, 35 mm
1)
IEC 60751, α=0,00385
-60 to +250 °C / -76 to +482 °F
-60 to +150 °C /-76 to +302 °F
2)
Pt100 acc. JIS 1604, α=0,003916
3)
DIN 43760
Supply voltage U (V DC)
R
=(U-11)/0.023
LOAD
Dimensions
mm/inches
Ordering information
MESO-L 70MEL00001
HART PC modem RS232 70MEM00001
HART PC-modem USB 70MEM00003
Software CD 70CDSOFT01
Conguration 70CAL00001