II. Core Parameters (Standard Configuration)

Channels: 4 independent temperature inputs

Sensors: Compatible with PT100/PT1000 RTD, K/S/T type thermocouples

Measurement Range: -200℃ ~ +800℃ (depending on the sensor)

Accuracy: ±0.1% FS, cold end compensation (thermocouple)

Output: 4–20mA analog quantity (per channel), relay alarm (warning / danger)

Power Supply: Rack backplane -18 ~ -24VDC

Operating Temperature: 0℃ ~ +60℃; Storage: -40℃ ~ +85℃

Structure: Standard full-height card, metal casing, anti-interference

III. Model Code Explanation (72101-XX-01-01-01-01-01)

72101: Basic model (temperature monitoring)

XX: Number of channels / version (e.g. 01 = 4 channels standard)

01: Input type (RTD / thermocouple)

01: Output (4–20mA)

01: Alarm configuration

01: Certification

01: Firmware version

IV. Main Functions

Temperature Monitoring: Bearing temperature, motor winding, lubricating oil temperature, cylinder body temperature

Two-level Alarm: Warning (Alert), Danger (Danger), relay contact output

Analog Quantity Upload: 4–20mA connected to DCS/PLC, real-time trend and record

Self-Diagnosis: Sensor break, short circuit, over-range alarm

Rack Configuration: Set range, alarm value, filtering through 7200 rack software

V. Application Scenarios

Power: Turbine generator bearings, feedwater pump, fan

Chemical Industry: Centrifugal compressor, screw machine, pump set

Metallurgy / Air Separation: Large motors, expansion machines, gearboxes

VI. Installation and Wiring Tips

Insert into the slot of the 7200 series rack, lock to ensure reliable bus contact

Sensor cables correspond to channels, separate strong and weak electrical wiring

Alarm dry contacts are connected to the interlock and DCS system respectively

VII. Maintenance and Common Faults

Daily: Observe the LED on the panel (power / normal / alarm), confirm the values are stable

Regularly: Tighten terminals, calibrate alarms, test interlocks, check cable aging

Common Problems:

No data: Check backplane power supply, slot contact, sensor lines

Drift / Jump: Poor sensor contact, poor grounding, cable damage

False Alarm: Incorrect threshold setting, interference, oxidation of relay contacts