Tank Side Indicator

Solidat Applied Technologies Ltd. is one of the leading manufacturers and suppliers of tank side indicator in China, also supports customized service. Please feel free to buy high quality products in stock here and get quotation from our factory. Good service and reasonable price are available.

 

1. Product Overview

The Industrial Tank Side Indicator is an integrated on-site acquisition and control terminal specially developed for tank farm metering systems. It centrally completes collection, calculation, remote uploading and over-limit audible & visual alarm of various sensor data on storage tanks. Equipped with an LCD operation panel, it supports on-site parameter configuration of all connected sensors without upper computer access.

Compatible with liquid level meters, RTD temperature transmitters, pressure gauges, tuning fork switches and other tank measuring instruments, this device embeds dedicated algorithms for liquid volume and mass calculation, and supports data correction via VCF tables and pressure-volume correction tables. It is equipped with multiple isolated communication channels compatible with Modbus and HART+4~20mA dual buses, enabling multi-variable synchronous monitoring and relay alarm output. Compliant with the national standard GB/T 18268-2010 for electromagnetic compatibility of industrial electrical control equipment, the instrument adopts an explosion-proof operable design. It is applicable to flammable and explosive hazardous tank areas such as petroleum, chemical and oil & gas storage yards, serving as the core local device for tank trade settlement metering, inventory counting and process safety monitoring.

2. Working Principle

Unified Multi-sensor Signal Collection The tank-side indicator is fitted with 4 universal input channels switchable between RS485 Modbus and HART+4~20mA buses. It synchronously reads all IO monitoring variables including tank liquid level, medium temperature, internal pressure and switch signals, enabling centralized management of all measuring instruments for a single tank via one terminal.

Accurate Tank Material Measurement & Calculation Dedicated built-in programs calculate tank volume and mass, automatically retrieving VCF volume correction and pressure-volume compensation parameters to calibrate raw measured data in real time. Standard volume and total medium mass are output automatically to eliminate manual conversion errors and meet the precision requirements of trade measurement.

On-site Parameter Configuration Without Casing Opening The whole machine features a sealed explosion-proof housing. All instrument communication addresses, measuring ranges, alarm thresholds and compensation parameters can be set via front panel display and buttons. Operations can be completed without opening the casing under hazardous working conditions to ensure explosion-proof operation safety on site.

Local Storage of Historical Data The device automatically stores all monitoring data at a fixed 30-second recording interval, with uninterrupted local retention for up to 6 months. Complete metering records are fully preserved under network disconnection, and batch uploaded to the central control system once communication is restored.

Over-limit Safety Alarm Output Two independent built-in relay output ports are available. When parameters such as liquid level, temperature and pressure exceed preset upper/lower limits, external alarm devices will be automatically triggered to realize safety early warning against tank overflow, overtemperature and overpressure.

3. Core Product Features

3.1 Multi-type Instrument Compatibility & Full Parameter Configuration

Supports access to all kinds of tank instruments including magnetostrictive level meters, RTD temperature sensors, pressure gauges, tuning fork switches and radar level meters. Complete configuration of Modbus register communication addresses for all digital instruments allows unified management of all tank sensors through a single terminal.

3.2 Professional Tank Metering Compensation Algorithm

Integrated standardized liquid volume and mass calculation modules support dual-dimension data correction via VCF tables and pressure-volume compensation, suitable for high-precision inventory counting and trade settlement metering of crude oil, refined oil and chemical medium storage tanks.

3.3 Synchronous Multi-variable Monitoring & Dual-channel Relay Alarm

Collects and displays multiple tank IO variables simultaneously. Customizable high/low, high-high/low-low alarm thresholds can be set for liquid level, temperature and pressure. Two passive relay outputs support direct linkage with audible & visual alarms and on-site interlock valves.

3.4 Explosion-proof Design for Parameter Setting Without Casing Opening

Sealed explosion-proof housing allows all parameter debugging and instrument configuration without disassembling the shell. Operations can be directly performed in explosive hazardous areas, avoiding safety risks of combustible gas leakage and explosion caused by casing opening.

3.5 Isolated Multi-channel Communication & Stable Long-distance Transmission

4 switchable communication input ports support RS485 and HART+4~20mA dual bus modes. Isolated safety barriers are integrated into the power supply loop for superior anti-electromagnetic interference, lightning and surge protection. The maximum signal transmission distance reaches 1200 meters, fitting the wiring layout of large-scale distributed tank farms.

3.6 Long-term Offline Local Data Storage

No external storage module required. The device automatically records measurement data locally with a 30-second storage interval. Historical metering and alarm data can be continuously stored for 6 months, satisfying traceability and audit supervision requirements for tank farm data.

4. Complete Technical Specifications

表格

Item	Technical Specification
Power Consumption	2.5W (Loop-powered, no additional external power supply required)
Communication Input Ports	4 channels, switchable RS485 Modbus / HART+4~20mA dual input bus
HART+4~20mA Channel Limit	Max. 1 external measuring device per single 4-20mA signal input channel
Max. Signal Transmission Distance	1200 meters
Power Supply Circuit Configuration	Isolated safety barrier built into external power port
Relay Output	2 independent relay alarm output ports
Data Storage Capacity	Storage interval: 30s; Historical data retention period: 6 months
Ambient Operating Temperature	-20℃ ~ +70℃
Applicable National Standard	GB/T 18268-2010 Electromagnetic Compatibility Requirements for Electrical Equipment for Measurement, Control and Laboratory Use
Overall Dimension	Width 211mm × Height 258mm
Terminal Layout Specification	3 groups of input terminals (30mm terminal spacing) + 2 groups of output terminals

5. Installation & Operation Instructions

5.1 Recommended Installation Method

Wall-mounted or pipe-clamp vertical installation beside storage tanks. The installation height shall facilitate screen viewing and operation at eye level. For petroleum and chemical hazardous tank areas, construction must strictly comply with explosion-proof electrical specifications, and explosion-proof waterproof cable glands shall be matched for all cable ports.

5.2 Key Wiring Standards

Separate communication signal cables from high-power electric cables to reduce electromagnetic signal interference.

Reliably ground the instrument metal housing to improve lightning, surge and anti-interference performance.

Bare copper cores of cables are prohibited in wiring for explosion-proof zones; all joints shall be sealed and waterproof. Additional rain and sun protection accessories are required for outdoor installation.

Route multi-channel sensor buses separately to prevent signal crosstalk between different instruments.

5.3 On-site Commissioning Procedures

After wiring completion, all instrument communication addresses, measuring ranges, compensation parameters and alarm thresholds can be set via the front LCD panel without disassembling the instrument casing.

After connecting liquid level, temperature and pressure sensors, activate the built-in VCF and pressure-volume compensation algorithms to verify the metering precision of tank volume and mass.

Set high/low limit alarm values for each parameter, and test whether the 2 relay outputs can normally drive on-site audible & visual alarm equipment.

6. Typical Application Scenarios

Petrochemical Industry Local multi-parameter collection and metering for crude oil tanks, refined oil tanks, chemical raw material tanks, reactors and separators, with simultaneous local display and alarm of liquid level, temperature and pressure.

Oil & Gas Storage Yards Applied to floating roof tanks, atmospheric dome tanks and underground oil depots, matched with medium volatilization suppression and tank leakage monitoring systems to realize local metering and safety early warning for storage yards.

Fine Chemical Industry Continuous online metering and monitoring for corrosive acid & alkali storage tanks, organic solvent tanks and high-purity material storage tanks.

Food & Pharmaceutical Industry Local liquid level & temperature monitoring and over-limit alarm for sanitary batching tanks, sterile medium storage tanks and raw material blending tanks.

Electric Power & Energy Industry Multi-parameter data collection for heat transfer oil tanks, hydraulic oil stations, lubricating oil storage tanks and water treatment dosing systems.

Flammable & Hazardous Chemical Storage On-site metering and safety interlock early warning for various atmospheric storage tanks holding flammable, explosive and corrosive media.

7. After-sales & Supporting Services

One-stop Professional Technical Support Full-process technical services including on-site installation guidance, complete machine wiring commissioning and instrument parameter configuration, with remote online troubleshooting assistance.

Ultra-low On-site Operation & Maintenance Cost No wearing mechanical parts inside the device; no regular consumable replacement required, greatly reducing daily maintenance workload of tank farms.

Global After-sales Service Network Solidat Applied Technologies Ltd. is equipped with a professional after-sales technical team to rapidly respond to customer demands and provide timely spare parts supply and on-site door-to-door service.

Customized Tailored Solutions Exclusive schemes for metering compensation parameters, communication protocols and alarm logic can be customized according to customer tank dimensions, medium characteristics and tank farm automatic control system requirements.

8. Contact Information

Company Name: Solidat Applied Technologies Ltd. Official Website: www.solidat.net China Office Tel: +86-010-86468485 We provide customized full-set tank farm measurement solutions covering radar level measurement and magnetostrictive level measurement for global industrial customers. Commercial inquiries and project cooperation are warmly welcomed.

9. Core Product Keywords

Tank-side Indicator, Industrial Tank Side Table, On-site Tank Metering Terminal, Explosion-proof Tank Farm Collector, Multi-parameter Tank-side Controller, Trade Settlement Meter, Liquid Level Temperature Pressure Acquisition Terminal, Tank Historical Data Recorder

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