Contents

Revision and Copyright Information
Table of Contents
1. Introduction
2. Precautions
3. Initial Inspection
4. Overview
5. Specifications
6. Installation
7. Operation
- 7.1 Measurement Concepts
- 7.2 Quarter-Bridge Strain
  - 7.2.1 Quarter-Bridge Strain with Three-Wire Strain Element
    - 7.2.1.1 Quarter-Bridge Strain with Three-Wire Element Wiring
      - 7.2.1.1.1 Quarter-Bridge Strain with Three-Wire Element Wiring Using a Multiplexer
    - 7.2.1.2 Quarter-Bridge Strain with Three-Wire Element Calculations
    - 7.2.1.3 Quarter-Bridge Strain with Three-Wire Program Examples
      - 7.2.1.3.1 CRBasic Programming
  - 7.2.2 Quarter-Bridge Strain with Two-Wire Element
    - 7.2.2.1 Quarter-Bridge Strain with Two-Wire Element Wiring
    - 7.2.2.2 Two-Wire Quarter-Bridge use with Multiplexers and Equations
  - 7.2.3 Quarter-Bridge Strain with Dummy Gage
    - 7.2.3.1 Quarter-Bridge Strain with Dummy Gage Wiring Setup
    - 7.2.3.2 Quarter-Bridge Strain with Dummy Gage Calculations
    - 7.2.3.3 Quarter-Bridge Strain with Dummy Gage Example Programs
  - 7.2.4 Quarter-Bridge Strain Lead Resistance Compensation
    - 7.2.4.1 Mathematical Lead Compensation for Three-Wire, Quarter-Bridge Strain
      - 7.2.4.1.1 Mathematical Lead Compensation Circuit and Equations
      - 7.2.4.1.2 Mathematical Lead Compensation Programs
    - 7.2.4.2 Shunt Calibration Lead Compensation for Three-Wire, Quarter-Bridge Strain
      - 7.2.4.2.1 Three-Wire Gage Circuit with Shunt
        
        7.2.4.2.1.1 Three-Wire Gage Circuit with Remote Shunt across the Active Gage
        
        7.2.4.2.1.2 Three-Wire Gage Circuit with Shunt across the Dummy Resistor
      - 7.2.4.2.2 Math for Shunt Calibration of Three-Wire, Quarter-Bridge Strain Circuits
      - 7.2.4.2.3 Example Programs for Shunt Calibration of Three-Wire, Quarter-Bridge Strain Circuits
    - 7.2.4.3 Lead Compensation using Quarter-Bridge Strain with Two-Wire Element
  - 7.2.5 Calculation of Strain for Quarter-Bridge Circuits
- 7.3 Half-Bridge Strain Circuit
  - 7.3.1 Advantages/Strengths verses Disadvantages/Weaknesses
  - 7.3.2 Half-Bridge Bending Strain
    - 7.3.2.1 Half-Bridge Bending Strain Wiring
    - 7.3.2.2 Half-Bridge Bending Calculations
      - 7.3.2.2.1 CR1000 Half-Bridge Strain with Three Reps Program Example
  - 7.3.3 Half-Bridge Axial Strain
    - 7.3.3.1 Measurement Strain Sensor
      - 7.3.3.1.1 Example of a Static Measurement Gage
        
        7.3.3.1.1.1 Hitec HBWF-35-250-6-XGP-NT Calibration Sheet Example
        
        7.3.3.1.1.2 HBWF-35-250-6-XGP-NT Example Program
    - 7.3.3.2 Half-Bridge Axial Strain Wiring
    - 7.3.3.3 Half-Bridge Axial Strain Equations and Programming
      - 7.3.3.3.1 Half-Bridge Axial Strain with Zero and Shunt Calibration Program Example
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Campbell Scientific 4WFBS120 Product Manual

Campbell Scientific 4WFBS120 Peripheral manual cover

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Campbell Scientific 4WFBS120 Peripheral Specification

The Campbell Scientific 4WFBS120 Peripheral is a sophisticated weatherproof enclosure designed to house and protect sensitive electronic instrumentation in a variety of outdoor environments. This peripheral unit is engineered to ensure the longevity and reliability of the equipment it safeguards, featuring a robust construction that withstands harsh weather conditions, including extreme temperatures, precipitation, and UV exposure. The enclosure is crafted from high-quality, durable materials that provide excellent impact resistance and corrosion protection, making it suitable for deployment in both remote and urban settings.

Internally, the 4WFBS120 is equipped with a customizable mounting system that accommodates a wide range of devices, allowing for seamless integration with data loggers, power supplies, and communication peripherals. The enclosure is designed with a thoughtful layout that facilitates efficient cable management and easy access for maintenance and installation tasks, minimizing downtime and service interruptions.

Security features of the 4WFBS120 include lockable latches and tamper-proof hardware options, ensuring that the enclosed equipment remains secure from unauthorized access and potential vandalism. Additionally, the enclosure is designed to support various power configurations, including solar power systems, providing flexibility and sustainability for long-term field deployments.

The 4WFBS120 also incorporates ventilation and thermal management systems to prevent overheating and ensure optimal performance of the housed equipment. With its versatile design, the Campbell Scientific 4WFBS120 Peripheral is an ideal solution for researchers and technicians requiring dependable protection and operational support for their outdoor electronic systems. This makes it a preferred choice for applications in meteorology, environmental monitoring, and agricultural research.

Campbell Scientific 4WFBS120 Peripheral F.A.Q.

What is the primary function of the Campbell Scientific 4WFBS120 Peripheral?

The Campbell Scientific 4WFBS120 Peripheral is designed to expand the input/output capabilities of data loggers by providing additional four-wire full-bridge sensor inputs.

How can I connect the 4WFBS120 to a data logger?

To connect the 4WFBS120 to a data logger, use the supplied cables to attach the peripheral to the data logger's control ports or analog inputs, following the instructions in the user manual for specific pin configurations.

What troubleshooting steps should I take if the 4WFBS120 is not recognized by the data logger?

Ensure all connections are secure and verify the data logger's configuration settings are correct. Check for any firmware updates for both the data logger and peripheral. If the issue persists, consult the troubleshooting section of the user manual.

How do I calibrate sensors connected to the 4WFBS120?

Calibration requires following the sensor manufacturer's guidelines and using the data logger's calibration functions to adjust the readings to match known standards or reference measurements.

What maintenance is required for the 4WFBS120?

Regularly inspect the 4WFBS120 for physical damage, ensure all connections are tight, and keep the peripheral clean and free from dust and moisture. Periodically check for firmware updates and apply them as necessary.

Can the 4WFBS120 be used in outdoor environments?

While the 4WFBS120 is designed for rugged use, it should be housed in a weatherproof enclosure if used outdoors to protect it from environmental elements.

How do I interpret error codes displayed by the 4WFBS120?

Refer to the troubleshooting section of the user manual for a list of error codes and their meanings, along with recommended corrective actions.

What are the power requirements for the 4WFBS120?

The 4WFBS120 typically operates from the power supplied by the connected data logger. Ensure the data logger can supply adequate power as detailed in the specifications section of the manual.

How do I perform a factory reset on the 4WFBS120?

To perform a factory reset, consult the user manual for the specific reset procedure, which typically involves a sequence of button presses or jumper settings on the device.

What should I do if the 4WFBS120 shows inconsistent sensor readings?

First, check sensor connections and ensure they are secure. Verify that the sensors are properly calibrated. If inconsistencies persist, check for interference from nearby electrical devices and review the configuration settings.