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General| Ingress protection | IP66 / IP67 |
|---|---|
| Gas types | Toxic gases, Oxygen |
| Measurement Principle | Electrochemical, Infrared, Catalytic |
| Output signal | 4-20 mA |
| Communication | HART |
| Approvals | ATEX, IECEx, UL, CSA |
| Housing Material | Stainless steel |
Procedures for regular inspection and servicing by trained personnel.
Guidelines for using equipment in potentially explosive atmospheres according to regulations.
Information on liability transfer and warranty provisions.
Stationary, continuous monitoring for concentrations of combustible gas/air or vapour/air mixtures below LEL.
Details on Polytron Ex and Ex R transmitters and their measuring ranges (0-99% LEL, 0-9.9% LEL).
Concepts for Polytron Ex transmitters with integrated sensors (PR M, LC M) for accessible locations.
Concepts for Polytron Ex R transmitters with remote sensing heads (SE Ex PR M ET, SE Ex LC M) for inaccessible locations.
Specific safety guidelines for the Polytron Ex transmitter and its Ex-sensor connections.
Specific safety guidelines for the Polytron Ex R transmitter and its remote sensing head connection.
General safety measures for power supply, signal transmission, and operating temperatures.
Substances that may impair sensor sensitivity and recommended actions.
Explosion protection concepts (EEx me [ib] IIC T4/IIB T4) and zone applicability.
Suitability for specific gases, special conditions for safe use, and measurement principles.
Selecting location, avoiding external influences, and professional wiring for explosive atmospheres.
Proper placement based on gas density and ventilation for optimal detection.
Methods for mounting the transmitter, including using screws or mounting brackets.
Guidelines for mounting the Polytron Ex R, including cable length and fixing methods.
Instructions for mounting the SE Ex sensing head, including fixing and further information.
Procedures for connecting the transmitter to the central unit, including cable gland and routing.
Specifics on cable resistance, grounding, and connections for the 3-wire setup.
Specifics on cable gland, cable resistance, grounding, and connections for the 4-wire setup.
Connecting the Polytron Ex R transmitter to the SE Ex sensing head, including cable color coding.
Step-by-step guide for installing an Ex-sensor into the transmitter, including mounting and adjustment.
Procedure for adjusting constant current for the Ex-sensor, including jumper settings and voltage checks.
Instructions for switching on the supply voltage and allowing the transmitter to warm up.
Procedure for zero adjustment of the Polytron Ex transmitter using clean air or a calibration adapter.
Procedure for sensitivity adjustment of the Polytron Ex transmitter using calibration gas.
Specifics on displaying concentration for LC M sensors and using calibration chambers.
Procedure for zero adjustment of the Polytron Ex R transmitter using clean air or a calibration adapter.
Procedure for sensitivity adjustment of the Polytron Ex R transmitter using calibration gas.
Comparing transmitter display with central unit reading and checking alarm triggering with test gas.
Procedure for testing sensor signal sensitivity using test gas and calculating sensitivity E.
Final steps after testing the sensor signal, including setting the sliding switch and closing the flap.
Understanding display indications, reference numbers, and current signal loop values (4-20 mA).
Guidelines for using the dust filter with Ex-sensor PR M, including maintenance and calibration.
Procedures for system readiness after interruptions like servicing or inspection, including recalibration.
Performing visual inspections to ensure the device is operational.
Performing zero/sensitivity calibration, checking display, and inspecting sensor sintered metal disc.
Annual inspection by trained specialists and recommendations for service contracts.
Detailed steps for replacing Ex-sensors in both Polytron Ex and Polytron Ex R transmitters.
Identifies a faulty cable as the cause for no display and suggests checking the connection.
Addresses calibration issues due to faulty or poisoned Ex-sensors and suggests replacement.
Troubleshooting fluctuating current by resetting the sliding switch to normal mode.
Diagnoses low current (<3.0 mA) due to sensor issues and suggests recalibration or replacement.
Detailed technical specifications including measuring range, voltage, dimensions, and environmental conditions.
Information on CE marking, degree of protection, and device description according to directives.
Parameters related to power supply, sensor output current, and connectable inductance/capacity.
Technical data for Ex-sensor PR M and LC M, including part numbers and operational parameters.
Technical data for SE Ex PR M and SE Ex LC M sensing heads, including part numbers and operational parameters.
References to pages detailing the dimensions of the Transmitter Ex/Ex R and Sensing Head SE Ex.
Test results for detecting various gases and vapours, including LEL, linearity error, and display values.
Diagram showing the dimensions of the Transmitter Ex / Ex R with measurements in mm.
Diagram showing the dimensions of the Sensing Head SE Ex with measurements in mm.
Description of the Polytron Ex and Ex R transmitter housings, materials, and sensor construction.
Detailed explanation of the heat-of-reaction principle, Wheatstone bridge, and signal conversion.
List of part numbers for Polytron Ex, Ex R transmitters, and associated Ex-sensors.
List of part numbers for accessories like cable glands, dust filters, and calibration equipment.
List of available spare parts, including Ex-sensors, adapter plates, and special keys.
Details of the gas measuring device (Polytron Ex/Ex R) and its manufacturer, Dräger Safety.
Information on ATEX compliance, zone applicability (II 2G EEx me [ib] IIC/IIB T4), and labeling.
Description of the gas measuring head and its intrinsically safe output circuit parameters.
Specific conditions for safe application, including sensor connection and IP protection.
First addendum to the EC type-examination certificate covering specific gases and vapors for explosion protection.
Notes to be observed from the operating manual regarding safe usage.
Declaration of conformity for Polytron Ex/Ex R, complying with Directive 94/9/EC and referencing the EC type-examination certificate.
Details of the notified body (EXAM) and the approved quality system for manufacturing.
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