Dräger X-AM 2500 - User Manual

Dräger X-am
®
2500
(MQG 0011)
i
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Instructions for Use
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Summary

Safety Guidelines and Alerts

Explosion Hazard Area Safety

Details requirements for using devices in explosion-hazard areas, including approvals and regulations.

Alert Icons Definitions

Product Description and Usage

Instrument Component Overview

Intended Use and Area Classifications

Defines instrument purpose and specifies use in explosion-hazard zones and divisions.

Configuration and Approvals

Product Approvals and Directives

Instrument Configuration Process

Explains how to configure the instrument using PC software and a USB cable.

Default Instrument Settings

Operation: Initial Setup

Preparations for Operation

Outlines steps before initial use, like inserting batteries or power packs.

Switching on the Instrument

Describes the procedure for turning on the instrument, including self-test and display information.

Operation: Basic Controls

Switching off the Instrument

Details the process for safely turning off the instrument.

Before Entering the Workplace

Emphasizes pre-work checks like display verification, calibration, and alarm checks.

During Operation Monitoring

Explains how measured values are displayed, including indicators for exceeded ranges and alarms.

Operation: Alarm Handling

Identifying Alarm Patterns

Concentration Alarms (A1;A2)

Operation: Advanced Alarms & Modes

Exposure and Battery Alarms

Quick Menu Functionality

Operation: Common User Tasks

Common User Tasks Overview

Battery Replacement Guide

NiMH Power Pack Charging

Operation: Testing and Calibration

Manual Bump Test Procedure

Guides users through performing a manual bump test using test gas and a calibration cradle.

Instrument Calibration Process

Explains the process of fresh air calibration and adjusting the sensitivity for individual measuring channels.

Maintenance Procedures

Scheduled Maintenance Intervals

Approval Information: Safety & CSA

Critical Safety Instructions

Provides crucial safety instructions, especially regarding battery handling in hazardous locations.

Daily Sensitivity Test Requirement

Declaration of Conformity

Overview

1. Function Description
2. Usage Features
3. Maintenance Features
4. Battery Replacement and Charging
5. Calibration
6. Cleaning
7. Disposal

The Dräger X-am® 2500 (MQG 0011) is a portable gas detection instrument designed for the continuous monitoring of various gas concentrations in ambient air, particularly in working and explosion-hazard areas. It can independently measure up to four different gases, depending on the Dräger sensors installed.

Function Description

The device is intended for use in areas at risk for explosions, classified by zones (Zone 0, Zone 1, Zone 2) or in mines susceptible to black damp. It operates within a temperature range of -20 °C to +50 °C and is suitable for areas where gases of explosion groups IIA, IIB, or IIC and temperature class T3 or T4 may be present. For Zone 0, the temperature class is limited to T3. In mines, it should only be used in areas with a low risk of mechanical impact. It is also approved for areas at risk for explosions of Class I&II, Div. 1 or Div. 2, within the same temperature range, and for areas with gases or dusts of groups A, B, C, D or E, F, G, and temperature class T3 or T4.

The instrument features a clear display that shows measured gas values, special symbols for various statuses (e.g., fault message, warning, peak value, TWA, STEL, bump test mode, fresh air calibration), and battery status indicators. Visual, audible, and vibration alarms are integrated to alert users to hazardous situations.

Usage Features

Before operation, users must carefully read the Instructions for Use and those of associated products, strictly adhering to all instructions. Only trained and competent users are permitted to operate the device, and all local and national rules and regulations must be followed.

To prepare for operation, batteries or a charged NiMH power pack must be inserted. The instrument then performs a self-test, displaying the software version, calibration/adjustment reminders for sensors, and alarm thresholds. During the warm-up period, measured values flash, and a warning symbol is displayed, with no alarms issued.

During operation, the device continuously displays measured values. If a measuring range is exceeded or not reached, specific symbols will appear instead of the measured value. Excess concentrations of flammable materials can lead to oxygen deficiency, and low O2 concentrations will trigger an error indication. In the event of an alarm, visual, audible, and vibration alarms are activated.

The device features different alarm types:

• Concentration pre-alarm A1: Indicated by an alternating A1 display and measured value (not for O2). This alarm is not latching and stops when the concentration drops below the threshold. A single tone and flashing LED accompany it. Acknowledging with the OK-key silences audible and vibration alarms.
• Concentration main alarm A2: This is a self-retaining alarm, indicating a risk of fatal injury, and cannot be acknowledged or canceled. Users must leave the area immediately. It's displayed as an alternating A2 and measured value. For O2, A1 signifies lack of oxygen, and A2 signifies excess oxygen.
• STEL / TWA exposure alarm: This alarm also requires personnel to leave the area immediately and is subject to national regulations. It cannot be acknowledged or canceled.
• Battery pre-alarm: A flashing special symbol on the display. Acknowledging with the OK-key silences audible and vibration alarms. The battery will last approximately 20 minutes after this alarm.
• Battery main alarm: A flashing special symbol, indicating the instrument will automatically switch off after 10 seconds. This alarm cannot be acknowledged or canceled.
• Instrument alarm: A special symbol displayed, indicating the instrument is not ready for operation. Maintenance or Dräger Service contact is required.

The device also includes an "Info Mode" to display warning/fault messages, peak values, and exposure values (TWA and STEV). A "Quick Menu" allows access to functions like bump test mode, fresh air calibration, and display/deletion of peak values.

Maintenance Features

The instrument should be inspected and maintained annually by suitably qualified persons, following EN 60079-29-2 and EN 45544-4 guidelines. Recommended calibration intervals for Ex, O2, H2S, and CO measuring channels are 6 months. Calibration intervals for other gases depend on the specific DrägerSensors.

Battery Replacement and Charging:

• Only approved battery types (Alkaline or NiMH rechargeable) should be used, as they are part of the Ex approval.
• Batteries must not be replaced or charged in hazardous areas.
• NiMH power packs should be charged with the appropriate Dräger charger within an ambient temperature range of 0 to +40 °C.
• The charger LED indicates charge status (Charge, Malfunction, Full).
• To conserve battery life, charging occurs between 5 and 35 °C. The charging process is automatically interrupted if this range is exceeded and resumes when the temperature returns to normal.
• New NiMH power packs achieve full capacity after three complete charge/discharge cycles.
• The instrument should not be stored for extended periods without being connected to a power source (maximum 2 months) to prevent the internal buffer battery from draining.

Calibration:

• Manual Bump Test: Requires a test gas cylinder with a specific volume flow and gas concentration higher than the alarm threshold. The instrument is inserted into a calibration cradle, and test gas flows over the sensors. If displays are outside specified ranges, the instrument must be calibrated by service personnel.
• Fresh Air Calibration: Calibrates the instrument to fresh air, free of measured or interfering gases. This sets the zero point of all sensors (except DrägerSensor XXS O2, which is set to 20.9 vol. %). If a fault occurs, the fresh air calibration should be repeated, or the sensor replaced.
• Span Calibration/Adjustment: The sensitivity for individual measuring channels can be adjusted using a standard test gas. For the ex-channel, propane can be used as a substitute calibration gas, with specific display adjustments for nonane or methane.

Cleaning:

• The instrument can be cleaned by washing with cold water, using a sponge if necessary, to remove dirt and deposits.
• Abrasive cleaning tools, cleaning agents, and solvents should not be used as they can damage the dust and water filters.
• After cleaning, the instrument must be carefully dried with a cloth.

Disposal:

• The product must be disposed of in accordance with applicable regulations and not as household waste, as indicated by the WEEE icon. It can be returned to Dräger free of charge.
• Batteries and rechargeable batteries must not be disposed of as household waste but taken to battery collection centers, as indicated by the battery disposal icon.

Dräger X-AM 2500 Specifications