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MT1188 Thermocouple input, two-wire temperature transmitter (non-isolated)
· Thermocouple input such as K, E, S, B, 4~20mA output, no electrical non-isolation between input and output. Adjust the potentiometer with zero and full scale calibration.
· MT1188 two-wire temperature transmitter, thermocouple signal input, converted to standard 4 ~ 20 mA output signal.
· There is no electrical isolation between the input and output. It is a low cost two-wire temperature transmitter.
· Adjust the potentiometer with zero and full scale calibration.
· Two-wire transmission mode (The power supply does not output the signal as a common two wires).
· Compact structure design, which can be directly installed in the standard junction box of the temperature sensor head to form an integrated structure.
Model / selection table:
Option |
Model and code |
Description |
Model |
MT1188 |
Thermocouple input, 2-wire temperature transmitter (non-isolated) |
Service Code |
-QC9A |
Product Service Code |
Note: |
Technical data:
Product structure:
Shell size |
Φ46×20 (mm) |
Housing Material / Color |
PC (Polycarbonate) / Lake Blue |
Whole machine weight |
About 40 grams |
Degree of protection |
IP00 / IP54 (determination of sensor protection level) |
Shock-resistant vibration |
4g/2 150Hz |
Environmental conditions:
Ambient temperature |
-20~+70℃ |
Ambient temperature (storage or operation) |
-40~+100℃ |
Condensation |
Allowed |
Input:
Input signal |
K, E, S, B, R, T and other thermocouples |
Measurement range |
Depends on sensor and input signal type |
Input signal type / measuring range |
See the table below |
Sensor type and measuring range table:
Thermocouple sensor type (index number) |
Measurement range |
Minimum range |
error (whichever is greater) |
K |
0~1300℃ |
120℃ |
1℃ or 0.1% |
E |
0~1000℃ |
80℃ |
1℃ or 0.1% |
S |
0~1600℃ |
580℃ |
3℃ or 0.1% |
B |
400~1800℃ |
1000℃ |
3℃ or 0.1% |
R |
0~1600℃ |
850℃ |
3℃ or 0.1% |
T |
-200~400℃ |
120℃ |
1℃ or 0.1% |
Output:
Current output |
4~20mA |
Load resistance |
Max (power - 12V) / 22mA |
Output ripple |
<10mV p-p |
Power supply:
Output loop supply voltage |
12~30VDC (reverse connection protection) |
General parameters:
Standard accuracy |
Typical values±0.1%FS |
Cold junction compensation error |
0.5~1°C (compensation range -15~+75°C) |
Load change effect |
±2μA |
Power change impact |
0.01%/V |
Temperature drift |
0.005%FS/℃ |
Response time |
1.5S |
Stabilization time |
<10s |
Long-term stability |
0.1 ° C / year or 0.05% / year, take the larger |
Electromagnetic compatibility (EMC) |
In accordance with IEC 61326-1 (GB/T 18268) |
Field device suitable for connection |
Thermocouple temperature sensor |
Mounting method |
Mounted in the standard junction box of the temperature sensor head (according to DIN 43 729 Form B) |
Wiring parameters:
Rigid (or flexible) wire cross section |
Suitable for single or multi-core wire with a cross-sectional area of up to 1.75mm2. |
Connection type |
M3 screw fastening connection |
Screw torque |
up to 0.8Nm |
Certification/standards:
CE certification |
Meet CE standards |
Product diagram / terminal wiring diagram: