Technical Specifications

Measurement Accuracy：±0.2% FS @ 25℃ reference ambient

Temperature Drift Coefficient：±50 ppm/℃ across full operating range, minimizes on-site calibration frequency

Alarm Setpoints：2 independent fully adjustable thresholds (high & low level)

Alarm Hysteresis：0 ~ 10% FS configurable, eliminates frequent relay cycling from liquid level fluctuation

Display System：4-digit LED digital display + bar graph indicator; high-contrast explosion-proof glass window

Relay Output Rating：SPST-NO, 5 A @ 250 VAC resistive load, direct drive of field pumps, solenoid valves and alarm beacons

Relay Mechanical Endurance：≥ 100,000,000 operations (no-load condition)

Relay Electrical Endurance：≥ 100,000 operations @ rated resistive load

Audible-visual Alarm：Dual high-brightness LED indicators + built-in buzzer, 80 dB @ 1m

Analog Re-transmission Accuracy：±0.2% FS

Analog Output Load Capacity：0 ~ 500 Ω (current output type, supports long-distance field transmission)

System Self-diagnosis：Power-on self-test; automatic alarm for sensor open-circuit & short-circuit faults

Power Failure Memory：Non-volatile storage; all parameters retained > 10 years, no re-configuration after power recovery