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KROHNE DW 181 User Manual

KROHNE DW 181
39 pages
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Installation and
operating instructions
DW 181 184
Standard, high-temperature,
tropical and ATEX versions
Flow switches
©
KROHNE 06/2018
7.02125.26.00
CMD
Electromagnetic flowmeters
Variable area flowmeters
Mass flowmeters
Ultrasonic flowmeters
Vortex flowmeters
Flow controllers
Level measuring instruments
Pressure and temperature
Heat metering
Communications technology
Switches, counters, displays and recorders
Engineering systems & solutions

Table of Contents

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KROHNE DW 181 Specifications

General IconGeneral
BrandKROHNE
ModelDW 181
CategorySwitch
LanguageEnglish

Summary

Safety and Compliance

General Safety Advice

Crucial safety guidelines for installation and operation.

Standards and Approvals

Overview of the standards and directives the product complies with.

Ex Safety Instructions

Specific safety measures for hazardous area installations.

Handling Precautions

Guidelines for safe handling and transport of the device.

Product Information

Product Liability and Warranty

Details on product liability, warranty terms, and conditions.

Included Items and Documentation

List of supplied items and documentation provided with the product.

Official Approvals and Certificates

Information on official certifications and approvals for the product.

Product Identification and Components

Principle Components Overview

Exploded views and identification of key components for different versions.

Equipment Labeling Details

Explanation of standard and supplementary equipment labels.

Type Code Structure

Explanation of the product's type code and its elements.

1 Mechanical Installation

Positioning the Flow Switch

Guidance on optimal positioning within the piping system.

Installation in Hazardous Areas

Specific instructions for installing in ATEX/hazardous zones.

Connecting to the Pipe

Steps for securely connecting the device to the pipeline.

Flow Direction Considerations

Importance of indicating and respecting flow direction.

2 Electrical Connections

3 Commissioning and Adjustment

General Commissioning Notes

Basic guidelines for starting and commissioning the flow switch.

Adjusting Limit Switches (Std/EEx ia)

Procedure for adjusting limit switches on standard and EEx ia versions.

Type G Indicator Adjustment

Specific steps for adjusting limit switches with Type G indicator.

Type A Indicator Adjustment

Specific steps for adjusting limit switches with Type A indicator.

Adjusting Limit Switches (EEx d)

Procedure for adjusting limit switches on EEx d versions.

MS 12/BRX Switch Adjustment

Detailed instructions for adjusting the MS 12/BRX switch.

4 Display and Versions

Local Flow Indication

Description of Indicator G and Indicator A for local flow display.

Limit Switch Specifications

Overview of available limit switches and their ratings.

EEx d Version Technical Data

Technical specifications for the EEx d switch version.

High-Temperature Version Details

Technical specifications for the high-temperature (non-EEx) version.

Tropical Version Features

Information on the tropical version's junction box and plug.

5 Service and Maintenance

Routine Maintenance Guidelines

Instructions for cleaning and basic maintenance.

Instrument Exploded Views

Diagrams showing disassembled components for various models.

Inspection Procedures

Steps for inspecting the measuring assembly and housing.

Measuring Assembly Inspection

Detailed checks for the measuring system, cone-disc, and spring.

Housing Inspection (DW181/182)

Procedure for inspecting the housing of DW181 and DW182 models.

Basic Servicing Procedures

Customer-accessible servicing tasks.

Adjusting Type A Indicator Dial

Guide to repositioning the dial on Type A indicators.

Removing Display Assembly

Instructions for removing the display assembly for fault diagnosis.

Cleaning Springs / Replacing Measuring System

Steps to clean springs or change the measuring system sub-assembly.

Changing DW 183 Gaskets

Procedure for replacing gaskets in DW 183 flow controllers.

5.3 Spare Parts Catalog

6 Technical Data

Flow Range Tables

Detailed flow rate ranges for DW 181, 182, 183, and 184 models.

Product Temperature Limits

Specifications for standard and HT versions' temperature resistance.

ATEX Application Conditions

Special conditions and markings for ATEX certified versions.

Limit Switch and Relay Specifications

Ratings and characteristics for various limit switch types.

Instrument Version Materials

Details on materials used for different instrument versions.

7 Dimensions and Weights

8 Measuring Principle

Overview of Measuring Systems

Explanation of measuring systems C, E, and P.

DW 183 Specifics

Details on the DW 183 model's application and characteristics.

Appendix A: Return for Service

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