AO5074 detection end thermocouple input isolation safety barrier (one in one out, one in two out)
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- Technical specifications
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- AO5074 detection end thermocouple input isolation safety barrier (one in one out, one in two out)
◆ Performance Overview
Isolate and convert thermocouple signals from hazardous areas into current/voltage signals for output to safe areas, automatically compensating for cold junction temperature.The input end, output end, and power supply end are three terminal isolated, with functions such as online fault self diagnosis, making it an intelligent safety barrier product. Optional use of our company's dedicated handheld programmer for parameter modification or calibration (see Programmer User Manual for details).
◆ Output status during input fault
Follow method: Unless otherwise specified by the user, regardless of the fault state of the input signal (open circuit, short circuit, reverse connection, over range), the output will follow the changes of the input signal within the full range, but not exceed 12.5% of the output range (for example, when outputting 4mA to 20mA, the small output can be 0mA, and the large output cannot exceed 22mA).
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◆ Technical parameters
Explosion proof grade: [Exia] IIC
Dangerous area allows input signals:
Thermocouples (K, E, S, B, J, T, R, N, WRe3-WRE25, WRe5-WRe26);
The signal type and range are determined at the time of ordering and can also be programmed by oneself.
Output signal to the safe zone:
Current: 0 (4) mA~20mA; 0mA～10mA；
Voltage: 0 (1) V to 5V; 0V～10V；
Please specify other output signal types when placing an order.
Output load capacity:
Current: 0 (4) mA~20mA: ≤ 300 Ω; 0mA~10mA: ≤ 600 Ω
Voltage: 0 (1) V~5V: ≥ 1M Ω; 0V~10V: ≥ 2M Ω
Isolation transmission accuracy: ± 0.2% F · S (25 ℃± 2 ℃ excluding cold end compensation)
Response time: 2s Temperature drift:<30ppm/℃
Cold end temperature compensation accuracy: ± 2 ℃ (preheating for 10 minutes)
Cold end temperature compensation range: -20 ℃ to+60 ℃
Dielectric strength: ≥ 2500V AC (between input/output/power supply, leakage current 1mA, testing time 1min)
Insulation resistance: ≥ 100M Ω (between input/output/power supply)
Electromagnetic compatibility: EMC complies with IEC61000-4
Certification parameters of National Quality Supervision and Inspection Center for Instrumentation and Electrical Products (CQST):
10. Between terminals 11: Um=250V AC/DC Uo=6.5V, Io=9.7mA, Po=15.8mW
ⅡC ⅡB ⅡA
Co 17.5μF 399μF 700μF
Lo 264mH 792mH 1000mH
Power supply: DC 18-32V (typical value 24V DC)
Power consumption: 24V DC single output 0.4W
Dual output 0.6W
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autec@163.com
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