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Honeywell Midas

Honeywell Midas
160 pages
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Midas Gas Detector
User Manual
Table of Contents
Description
Overview
Default Configuration
Installation
Startup
Operation
Navigating Menus
Maintenance
Pyrolyzer Module Options
LonWorks Interface
Troubleshooting/Faults
REFLEX
Internal Web Server
Installation Topologies
Ordering Information
Specifications
Calibration/Bump Testing
Modbus/TCP Interface
Gas Tables
Warranty

Table of Contents

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Honeywell Midas Specifications

General IconGeneral
Power Supply24 VDC
Detection TechnologyElectrochemical, Infrared
Sampling MethodDiffusion
DisplayLCD
CommunicationModbus RTU, 4-20mA
Operating Temperature-20°C to +50°C
Humidity Range0% to 95% RH (non-condensing)
Target GasMultiple gases
Response Time< 30 seconds
Operating Humidity0% to 95% RH (non-condensing)
Outputs4-20mA
Protection RatingIP66
CertificationsATEX, UL, CSA
Detection GasesOxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Methane (CH4), and others

Summary

1 Description

2 Overview

2.1 Chassis Components

Details the main chassis, its display, pump module, and sensor cartridge chamber.

2.2 Mounting Bracket Assembly

Describes the mounting bracket, terminal module, and connection ports for installation.

2.3 Sensor Cartridge

Explains the types of sensor cartridges and how they are fitted into the detector.

2.4 Unit Covers

Details the standard and ventilated pyrolyzer covers for environmental protection.

3 Default Configuration

4 Installation

4.1 Mounting and Location

Guidance on selecting the detector's location and mounting it securely.

4.2 Mechanical Installation

Step-by-step instructions for mechanically installing the Midas detector unit.

4.3 Tubing Calculations

Provides tables for calculating sample and exhaust tubing lengths and flow rates.

4.5 Local Detector Option

Describes using the Midas detector for local ambient monitoring.

4.6 Electrical Installation

Covers wiring requirements and typical installation diagrams for electrical connections.

4.7 Electrical Connections

Illustrates various electrical connection configurations for the Midas detector.

4.8 Refitting the Main Chassis

Details the procedure for refitting the main chassis to the mounting bracket.

4.9 Installing the Sensor Cartridge

Step-by-step instructions for installing the sensor cartridge into the detector.

5 Startup

6 Operation

6.1 Normal Operation Mode

Describes the display and indicators during normal gas monitoring operation.

6.2 Review Mode

Allows safe review of detector settings without making changes.

6.3 Set-up, Calibration, and Test Mode Overview

Introduces modes for setting changes, calibration, and testing the detector.

7 Navigating Modes and Submenus

7.1 Review Mode Navigation

Explains how to navigate and view detector settings safely using review mode.

7.2 Set-up, Calibration, and Test Mode Navigation

Details navigation for setup, calibration, and test menus.

8 Maintenance

8.1 Sensor Cartridge Replacement

Provides instructions for replacing the sensor cartridge.

8.2 Pump Replacement

Details the procedure for replacing the pump module.

8.3 Reassembling the Detector

Step-by-step guide for reassembling the detector after maintenance.

8.4 Filter Replacement

Instructions for easy replacement of the internal filter.

8.5 System Leak Check Procedure

Procedure to perform a system leak check to ensure connections are secure.

9 Pyrolyzer Module Options

9.1 Fitting the Pyrolyzer Module

Instructions for installing the pyrolyzer module onto the Midas gas detector.

9.2 Reassembling the Detector

Procedure for reassembling the detector with the pyrolyzer module installed.

9.3 Configuring the Detector

Details how to configure the Midas detector after pyrolyzer installation.

10 Optional LonWorks Interface Installation

10.1 LonWorks Installation

Explains how to integrate the Midas gas detector into a LonWorks network.

10.2 LonWorks Software

Overview of LonWorks protocol, network variables, and behaviors.

11 Troubleshooting and Fault Diagnosis

12 REFLEX

13 Internal Web Server

13.1 Physical Network Components

Details the physical network components required for web server access.

13.2 Internet Settings

Explains the IP address and netmask requirements for communication.

13.3 Running the Web Browser

Guides on accessing and using the Midas web interface for diagnostics.

14 Typical Installation Topologies

14.1 Conventional Installation

Illustrates standard installation configurations with relays and PLCs.

14.2 ModbusTCP Installation

Shows typical installation diagrams using Modbus/TCP communication.

14.3 Power over Ethernet (PoE) Installation

Details Power over Ethernet installation options and power budgets.

15 Ordering Information

15.5 Midas Complete Gas Detector Kits

Lists complete Midas gas detector kits with part numbers.

15.6 Accessories and Spares

Provides a list of available accessories and spare parts.

16 Specifications

17 Calibration and Bump Testing

A ModbusTCP Interface

B Gas Tables

C Warranty

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