Hanging Scales vs. Crane Scales for Industrial and Civil Engineering Applications

Hanging scales and crane scales both measure suspended loads, but the Arlyn HNG and ARC product families are different weighing systems. The HNG hanging scale is a modular system that connects an S-type load cell to a separate MKE-5 or UpScale indicator. The ARC crane scale is a compact, self-contained instrument with an integrated weight display and rechargeable battery power.

This distinction affects capacity selection, display placement, portability, connectivity, automation and customization. An ARC crane scale can be a strong choice for straightforward suspended weighing with an integrated local display. An HNG hanging scale offers a broader range of capacities and substantially greater flexibility for remote indicators, touchscreen workflows, data collection, industrial communication and custom process integration.

Hanging Scale vs. Crane Scale: Quick Comparison

These distinctions provide a starting point rather than engineering approval for a particular operation. Capacity, attachment geometry, rigging, environmental exposure, cable routing, indicator placement and applicable safety requirements must be evaluated for the complete system.

What Is an HNG Hanging Scale?

The Arlyn HNG hanging scale is built around an S-type load cell. The load cell is installed in the tension load path, while a cable connects it to a separate digital weight indicator. This modular arrangement separates the weighing sensor from the operator interface.

The indicator can be positioned where it is easier for the operator to see, reach and use. Depending on the application, it may be installed on a nearby wall, column, machine frame or control station. The mounting location and cable path must be protected from damage and must not interfere with the load or surrounding equipment.

The HNG scale can be configured with either:

• Arlyn MKE-5 indicator: A pushbutton industrial indicator with a monochrome graphics display, weighing functions, stored tare capabilities and optional communication or control outputs.
• Arlyn UpScale indicator: A 7-inch color touchscreen platform offering expanded workflow customization, data handling, user controls, communication choices and industrial integration.

This modular design is the HNG scale’s principal advantage. The customer is not limited to reading weight from a display incorporated into the suspended sensor. The weighing system can become part of a manufacturing, testing, monitoring, data or process-control workflow when the appropriate configuration is selected.

What Is an ARC Crane Scale?

The Arlyn ARC crane scale combines its stainless steel load sensor, protective housing, digital display and rechargeable batteries into a self-contained instrument. The scale is suspended between suitable overhead lifting equipment and a properly rigged load.

The integrated LCD uses 1-inch-high characters so the weight can be viewed from a distance. Standard functions include pushbutton zero, tare, net and gross weight display, adjustable display response and multiple weighing units. Optional hooks and shackles are available for different attachment requirements.

The ARC configuration is useful when the principal requirement is to lift and obtain a local weight reading without installing a separate indicator, routing a display cable or designing an extensive communication system.

When the HNG Hanging Scale Is the Better Choice

The HNG system is generally the stronger candidate when flexibility, indicator placement and integration are central to the project.

1. You Need a Capacity Outside the ARC Range

The current ARC family is offered in 2,500-, 5,000- and 10,000-pound capacities. The HNG family extends from 25 pounds to 20,000 pounds, providing more choices for lighter suspended measurements and a higher standard maximum capacity.

This broader selection can help match readability more closely to the measuring requirement. Selecting a 10,000-pound scale for a 100-pound load would provide much coarser readability than an appropriately selected lower-capacity HNG model.

2. The Weight Display Must Be Positioned Remotely

A separate indicator can be placed where it is easier for an operator to see and use. This can be valuable when the load cell is installed above eye level, within a machine, beneath a suspended vessel, on a test structure or in another location where an integrated display would be inconvenient.

3. The Scale Must Communicate With Other Systems

Depending on the selected indicator and configuration, the HNG scale can support communication methods such as:

• RS-232 serial communication
• RS-422 or RS-485
• USB communication
• Ethernet TCP/IP
• Wi-Fi with an appropriate UpScale configuration
• Analog output such as 4-20 mA or 0-5 VDC

These options can transmit weight information to a computer, data-acquisition system, compatible controller or industrial network. The correct interface depends on the receiving equipment, protocol, update requirements, cable distance and system architecture.

4. The Application Needs Industrial Protocols or a REST API

With the appropriate UpScale configuration, available interfaces include Modbus RTU/ASCII, Modbus TCP, EtherNet/IP, PROFINET and a REST Web API.

The REST API can allow a compatible software application to request weight information directly from the scale. This creates possibilities for custom databases, production systems, inventory software and specialized software workflows.

Interface availability does not make integration automatic. Network configuration, authentication, data mapping, update behavior, error handling and software development requirements should be reviewed before ordering.

5. Operators Need a Custom Touchscreen Workflow

The optional UpScale touchscreen can provide an interface tailored to the process rather than limiting the operator to a basic weight display. Potential capabilities include customized screen formats, stored tare information, set-point recipes, user-defined fields, data logging, user controls and supported import or export functions.

This is useful when personnel must associate a project, component, batch, test, individual or location with the recorded weight.

6. Weight Must Support a Process Action

Setpoints, relays, alarms and light-tower options can support properly engineered monitoring, filling, batching and process-control applications. For example, a suspended vessel or material container may be monitored as material is added or removed.

These process options must not be confused with lifting-safety controls. A setpoint, relay or scale warning should not be treated as a replacement for required overload protection, lifting controls or engineered safety systems.

7. The Organization Needs Better Weight Records

Depending on the indicator and options selected, the HNG system can support time-and-date output, USB data logging, PC-based remote indicator software, Google Sheets logging, printer output, REST API access and AxChange cloud monitoring.

Automated data collection can reduce manual transcription and associate readings with production, quality-control, inventory, maintenance or operational records.

When the ARC Crane Scale Is the Better Choice

A highly configurable weighing system is not required for every operation. ARC may be the better choice when:

• The expected load fits within a 2,500-, 5,000- or 10,000-pound configuration.
• A self-contained display is visible from the intended operating position.
• Rechargeable battery-powered portability is more important than extensive networking.
• The scale will be moved among appropriate lifting locations.
• The process requires straightforward tare, zero, net/gross and unit-conversion functions.
• The customer prefers an integrated housing instead of a separate load cell, indicator and connecting cable.
• Only selected additional functions, such as counting, time-and-date output or basic set-point control, are required.

Choosing ARC does not mean choosing an inferior weighing instrument. It means selecting a more focused, self-contained architecture for an application that does not need the HNG system’s broader integration potential.

Published Capacity and Readability Options

Readability is the smallest increment shown on the display. It is not the same as accuracy. Both product families currently list accuracy of 0.1% of full scale, while their capacity and readability choices differ significantly.

Product configurations can change. Confirm current capacity, readability, attachment, power and indicator options when ordering.

Choosing an Indicator for an HNG Hanging Scale

Review the complete Arlyn indicator comparison when deciding between MKE-5 and UpScale. Communication and software options must be selected as part of the complete scale configuration.

Civil Engineering and Construction Applications

Both product types can support civil engineering and construction-related weighing, but their strengths apply to different situations.

Potential HNG Hanging Scale Applications

• Fabrication measurement stations: Install the S-type load cell as part of a dedicated suspended weighing station and position the indicator at the operator’s workstation.
• Structural-component documentation: Record the measured weight of fabricated assemblies, pipe sections, frames or other suitable components.
• Material-container monitoring: Monitor suitable suspended hoppers, bags, bins or vessels as material is added or removed.
• Engineered test fixtures: Incorporate the load cell into an appropriately designed tension or force-measurement setup.
• Remote data acquisition: Transfer readings to a computer, industrial network or data-logging system.
• Process control: Use configured setpoints, outputs or alarms within a properly engineered manufacturing or material-handling system.
• Touchscreen workflows: Prompt operators to select a project, component, batch or test before recording the weight.

Potential ARC Crane Scale Applications

• Portable suspended weight verification: Move the self-contained scale among appropriate lifting locations.
• Shipping and receiving: Obtain a local weight reading for suitably rigged components or containers.
• Field material handling: Weigh loads where an integrated battery-powered display is more practical than a separate indicator.
• Fabricated-assembly checks: Measure components that fit the published ARC capacities.
• Temporary weighing operations: Use the self-contained unit when permanent data or control integration is unnecessary.

Important Safety and Capacity Distinctions

Both current product pages identify an overload warning at 102% of scale capacity. That message means the scale has exceeded its rated weighing range. It is not advance overload prevention, additional operating capacity or authorization to continue the operation.

Accuracy, Readability and Stable Measurements

Arlyn currently publishes an accuracy of 0.1% of full scale for both the HNG and ARC families. Accuracy should not be confused with readability:

• Capacity is the maximum load the scale is designed to measure within its published range.
• Readability is the smallest weight increment shown on the display.
• Accuracy describes how closely the measured result is expected to agree with the actual value under defined conditions.

For example, the HNG-100 displays changes in 0.02-pound increments, while the HNG-10000 displays changes in 2-pound increments. Selecting a capacity much higher than the application requires can reduce the usefulness of the displayed measurement.

Suspended loads can also move, swing and vibrate. Readings should be taken after the load stabilizes whenever the approved procedure permits. Applications involving movement, dynamic force or high-speed measurement should be reviewed with Arlyn before the equipment is selected.

How to Choose Between HNG and ARC

Use the following questions to identify the better starting point:

1. What is the maximum gross suspended load? Include the load, container and attachment components.
2. What is the smallest weight change that must be displayed?
3. Should the indicator be attached to the scale or mounted separately?
4. Will the scale be portable or installed as part of a fixed process?
5. Does the application require AC, DC or rechargeable battery power?
6. Must weight data reach a computer, PLC, industrial network, cloud system or healthcare application?
7. Are setpoints, relays, alarms, printing, API access or data logging required?
8. Would a custom touchscreen workflow reduce operator or transcription errors?
9. What temperature, moisture, dust, vibration or chemical exposure will the equipment encounter?
10. What load-cell attachments and mounting components are required?
11. How much vertical headroom is available?

Frequently Asked Questions