Introduction
Technical Parameters
Design features
Product Features and Model Parameters
2-wire loop-powered design, 24VDC system supply: Central control room provides 24VDC to the display unit; the controller outputs isolated 24VDC power to matched radar/level transmitters, power & 4–20mA signal share one cable, simple field wiring.
Full galvanic isolation circuit: Built-in isolation module between input power, field signal and output communication, effectively isolate surge interference & ground loop noise, protect back-end DCS/PLC system.
Dual signal processing: Collect standard 4–20mA analog signal from level/pressure/temp transmitters, realize local on-site display + remote RS485 digital transmission to control cabinet synchronously.
Input Signal
4-20mA
Accuracy
0.1%FS
Product
Basic Meter Add Transmitter Output Add Communication Output
| Working Power Supply | DC24V |
| Feeding Power Supply | DC24V 80mA |
| Relay Output | 4-channel Relay |
| Transmitter Output | 4-20mA |
| Effective Precision Range | -19999~35000 |
| Communication Output | RS485 |
| Height Display Resolution | ±1mm |
| Accuracy | 0.1%FS |
| Electrical Interface | M20*1.5 |
| Temperature Range | Export Type -40~70℃ |
| Compatible Transmitters | Radar, Magnetostrictive Plate, Pressure and other Transmitters |
| Working Environment | -30~60°C |
Main Functions
On-site Local Display Function Receives 4–20mA signal from 2-wire level/pressure transmitters, converts signal into actual engineering value for real-time local LCD reading at tank side.
Loop Power Supply for Field Transmitter 24V two-wire loop powered design; supplies isolated DC power to connected site transmitters via same signal cable, reduces field wiring workload.
Signal Isolation & Anti-interference Processing Built-in galvanic isolation to block ground loop disturbance and surge noise, stabilizes input signal and protects rear DCS/PLC control system.
Remote Digital Data Transmission (Optional) Converts measured analog data into Modbus-RTU via RS485, uploads real-time data to central control room remotely.
User Programmable Calibration & Parameter Setup On-panel keys for custom full range, engineering unit (m, %, m³ etc.), decimal point and tank volume linearization configuration without extra calibrator.
High/Low Limit Alarm Output (Optional) On-site sound & light alert when measured value exceeds preset upper/lower threshold for tank overfill or empty warning.
Safe Measurement in Hazardous Areas Intrinsically safe + dust explosion-proof structure, enables reliable measurement in flammable gas and combustible dust hazardous tank & silo locations.
Application Scenarios
Petroleum & Oil Depot Storage Tanks On-site level display for crude oil, fuel oil, diesel storage tanks in oil depots and refineries, hazardous gas environment requiring intrinsic safety certification.
Chemical Industry Storage Vessels Liquid chemical raw material tanks (solvent, acid, alkali, chemical intermediate) in fine chemical, pesticide and chemical plant, applicable for flammable medium hazardous zones.
Grain & Bulk Powder Silos Grain, flour, plastic powder, mineral powder silos with combustible dust risk, relies on dust explosion protection certification for solid material inventory monitoring.
Coal & Mining Processing Plant Coal powder, ore powder stock bins in coal washing and mineral processing factories for on-site material height indication.
Water Treatment & Environmental Protection Project Chemical agent dosing tanks, sludge storage tanks in sewage treatment plants for liquid level local monitoring.
Food & Beverage Factory Raw Material Tanks Syrup, edible oil, milk powder storage containers in food processing workshops, dust-proof and explosion-proof for food-grade powder storage.
Application Scope
Petrochemical, refining, fine chemical, grain processing, plastic raw material, mine & coal processing, environmental water treatment, food & beverage, pharmaceutical manufacturing industries.
Compatible with all standard 2-wire 4-20mA transmitters: radar level transmitter, magnetostrictive level gauge, hydrostatic pressure level transmitter and other loop-powered field instruments.
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Professional OEM & ODM Manufacturer
Tailored products to meet your complex working conditions.
Successful Project References & Customer Testimonials
Shaanxi NuoYing Automation Instruments Co., Ltd.
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+86 182 1004 9286
+86 182 1004 9286
+86 182 1004 9286
Block V5, Ronghao Industrial Town, Gaoling District, Xi'an, Shaanxi, China.
