Field Assistant

Yokogawa's "Field Assistant" is an enabler for digital transformation of field activities in process plant, such as operator’s round, basic equipment care, predictive maintenance, and so on. 
It helps to enhance safety, reliability, efficiency, and seamless communication, not only for work inside individual department, but crossorganizational work.
It consists of simple on-premise server, web client & tablet applications. 
The tablet application is designed to work off-line during field activities.


Major benefits include the following:

1. Digital Transformation for field activities in process plant

  • Loss-less information capturing from field activities
  • Digitalized SOP with further assistant features and its compliance check evidence
  • Smart document reference anytime at field

2. Operation & Maintenance integration

  • Seamless information sharing on unified work platform beyond organization
  • Standardized communication scheme with digitalized data collected from field

3. Digitalized data from field for further analysis & utilization

  • Digitalized data can be utilized in conjunction with process data or other plant data





About OpreX™

OpreX™ is the comprehensive brand for Yokogawa’s industrial automation(IA) and control business. The OpreX™ name stands for excellence in the technology and solutions that Yokogawa cultivates through the co-creation of value with its customers, and encompasses the entire range of Yokogawa’s IA products, services, and solutions. With this brand, Yokogawa will deliver integrated solutions that address specific needs and support its customers in their efforts to transform and grow their businesses.


Web Client

1. Dashboard

- Can check summary of current situation at a glance
- Can drilldown to find out more detail
- 1-shot (non-recurrent) round creation

2. Reporter

- Referring, Analyzing data with various filters & conditions
- Making report and print for submission

3. Log Manager

- Modify/delete/create any type of field logs by web client for management purpose

4. Composer

- Performing necessary configuration

  • User management
  • Shift setting
  • Plant hierarchy setting
  • Round Route setting
  • Task scheduling
  • Document registration
  • E-mail notification setting


Tablet Application

1. Common app

- Network & other initial setting for the tablet apps

2. Logger app

- Digitalized field check list
- Field readings input

  • Alert in case exceeding preset range

- Past field reading data indication

  • Numeric
  • Trend with range

- NFC / QR Code scanning for detecting tag name of a device in front

  • NFC / QR Code scanning can be set as mandatory for inputting field readings

- Adding logs on any devices or plant hierarchies
- Photo / video / sound recorded can be added onto any logs as attachment

  • Max 5 attachments /log
  • Video file size is restricted to 10 MB /file (about 20 sec. as 640 X 480 resolution)

3. Doc reader app

- Refer to device related digitalized document from tablet

  • Available file type depends on apps installed into a tablet

- NFC / QR Code scanning for referring related document of a device in front


Integration with Yokogawa Operations Management (OM) System

1. OM Work Instruction (WI) can trigger an inspection round, which is preconfigured in the Field Assistant

2. OM WI with a step-by-step Instruction & its compliance check, can be sent & executed in the Field Assistant

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