- Terminal Board
- Isolated Safety Barriers
- Signal Isolators
- Surge Protective Devices
- Safety Relays
- Isolated Intelligent I/O Modules
- Intelligent Gateways
- Industrial Data Optical Transceivers
- Online Dew Point Analyzers
- Data Acquisition Modules
- HART data converter
PHD-12TT-*11
Overview
Thermocouple input isolation safety barrier can isolate and convert thermocouple (TC) signals in hazardous areas into 4-20mA current signals, and output them to the safety zone. This safety barrier has built-in cold junction compensation and can be intelligently configured. The actual range of the thermocouple can be set through computer software. It has the functions of wire breakage alarm and out of range alarm. This product requires independent power supply, with isolated power supply, input, and output terminals. "*" represents the input type of the thermocouple, and the specific model is represented by a code (see "Input Signal Type and Range Table" for details).
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Input signal types and measurement range |
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|
Code |
TC model |
Measurement range |
Minimum range |
Conversion accuracy |
|
1 |
K |
-200~1370℃ |
50℃ |
0.5℃/0.1% |
|
2 |
S |
-50~1760℃ |
500℃ |
1.5℃/0.1% |
|
3 |
E |
-140~1000℃ |
50℃ |
0.5℃/0.1% |
|
4 |
J |
-160~1200℃ |
50℃ |
0.5℃/0.1% |
|
5 |
B |
250~1800℃ |
500℃ |
1.5℃/0.1% |
|
6 |
T |
-200~400℃ |
50℃ |
0.5℃/0.1% |
|
7 |
R |
-50~1760℃ |
500℃ |
1.5℃/0.1% |
|
8 |
N |
-200~1300℃ |
50℃ |
0.5℃/0.1% |
Specifications |
|
Input in hazardous area |
|
Input signal |
K, S, E, J, B, T, R, N thermocouple signals (see "Input Signal Type and Range Table" for details) |
Input disconnection |
The default "low alarm" can be modified to "high alarm" through configuration software |
Signal range |
The measuring range of the corresponding thermocouple is -10~100mV. |
Measurement range |
Users make their own configuration when ordering, and indicate it at the tail number or otherwise. |
Built-in cold junction compensation |
±1°C(Compensation range -20°C~ +60°C) |
Safety side output: |
|
Output signal |
4~20mA |
Output load capacity |
0~500Ω(customizable) |
Power supply |
20-35VDC |
Power consumption |
24VDC power supply, 20mA output |
LED indicator |
Green: Power indicator |
Output accuracy |
Please refer to the "Input Signal Type and Range Table" for details |
Response time |
Reaching 90% of the final value within 500ms |
Temperature drift |
0.005%F.S/℃ |
Temperature parameters |
Working temperature: -20℃~+60℃, storage temperature:-40℃~+80℃ |
Relative humidity |
10%~95% RH no condensation |
Dielectric strength |
Between intrinsically safe side and non-intrinsically safe side (≥ 3000VAC/min); |
Insulation resistance |
≥100MΩ (between input/output/power supply) |
Electromagnetic compatibility |
According to IEC 61326-1(GB/T 18268), IEC 61326-3-1 |
MTBF |
100000h |
Wire requirements |
Cross section ≥ 0.5mm2; Insulation strength ≥ 500V |
Applicable field equipments |
K. S, E, J, B, T, R, N TC sensors |
Installation place |
Installed in a safe zone, it can be connected to intrinsic safety instruments in hazardous areas up to Zone 0, IIC, Zone 20, and IIIC |
Safety certification
Functional safety certification
SIL2 according to IEC 61508 standards
Explosion-proof mark
[Ex ia Ga] IIC [Ex ia Da] ⅢC
Explosion-proof standard
GB/ T 3836.1-2021 GB/T 3836.4-2021
Terminals 3-4:
Um：250V AC/DC Uo=8.4V DC Io=31mA
Po=65.1mW Co=4.8μF Lo=20mH
Certification body:
CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products)
Functional safety certification |
SIL2 according to IEC 61508 standards |
Explosion-proof mark |
[Ex ia Ga] IIC [Ex ia Da] ⅢC |
Explosion-proof standard |
GB/ T 3836.1-2021 GB/T 3836.4-2021 |
Terminals 3-4: |
Um：250V AC/DC Uo=8.4V DC Io=31mA |
Certification body: |
CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) |
