Emerson DIXELL MRLDS-450 Quick Reference Manual
Ip41 & ip66 refrigerant gas detection
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Also See for DIXELL MRLDS-450:
- Installation and operation manual (44 pages) ,
- Installing and operating instructions (39 pages) ,
- Quick start manual (10 pages)
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Summary of Contents for Emerson DIXELL MRLDS-450
- Page 1 MRLDS-450 IP41 & IP66 Refrigerant Gas Detection...
- Page 2 The complete MRLDS-450 manual is available to download scanning the QR code at the end of this Quick Refence Guide, or at the address: https://webapps.emerson.com/Dixell/Pages/Manuals Safety Instructions IMPORTANT: Before using this product, carefully read and strictly follow the instructions in the manual.
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Page 3: Product Description
2. PRODUCT DESCRIPTION Intended Uses / Applications MRLDS-400 gas detectors are to be installed in non-classified, non-hazardous, permanent locations for the purpose of continuously monitoring ambient air (indoor or outdoor) for the following gas types: • Refrigerants • Oxygen • Toxic and combustible gases WARNING: This instrument is neither certified nor approved for operation in oxygen- enriched atmospheres. - Page 4 Technical Specifications Category Specifications Normal operation:..........4 to 20 mA Drift below zero:............. 3.8 mA Measuring range exceeded:......... 20.5 mA Signals to Central Analog Current Controller Instrument fault:..........≤ 1.2 mA Fault on analog interface:........> 21 mA Offline mode/Maintenance signal:..3 mA steady signal 0 to 5V;...
- Page 5 Enclosure IP41 / IP66 Protection Physical MRLDS-450 IP41: 6.5× 6.5×3.0” (165×165×77 mm) Enclosure Size Specifications MRLDS-450 IP66: 6.5×6.5×3.4” (165×165×87 mm) (W×H×D) (Approx.) Weight (Approx.) 1lb, 1oz (480 g) Temperature - 40 to 120 ºF (-40 to 50 ºC) Storage - 5 to 100 ºF (-20 to 40 ºC) Temperature 5 to 90 %RH, non-condensing Humidity...
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Page 6: Installation
3. INSTALLATION IMPORTANT: The manufacturer of this product requires that a bump test or calibration be performed following installation to verify instrument functionality. Mechanical Installation WARNING: DO NOT allow the lid / sensor to hang from the ribbon cable. Failure to comply may result in damage to the product. - Page 7 3.2.3 Power & Signal Wiring 1. Locate the relevant connections (Power, Analog, Modbus) and remove the terminal block from the PCBA. (The PCB terminal blocks are pluggable type and may be removed to aid termination). 2. Remove plugs from the corresponding M16 cable glands. •...
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Page 8: Operation
2. Reconnect the ribbon cable from the sensor to the PCBA as shown: 3. Ensure no cables are interfering with the sensor module and close the lid. 5/32” (4 mm) hex key/allen wrench, tighten the lid screws in an X tightening pattern: 4. - Page 9 Switch Functions User interaction with the MRLDS-400 gas detector is accomplished through the use of two magnetic switches located on the bottom of each unit. To actuate a magnetic switch (referred to as MAG#1 or MAG#2), apply the supplied magnetic wand to the relevant switch location as indicated below: Depending on the duration the switch is held, a short “TAP”...
- Page 10 MRLDS-400 Smartphone Application To download the MRLDS-400 App, visit either the App Store or Google Play. The companion smartphone application allows users to perform a variety of functions to configure and interact with the MRLDS-400 gas detector, including: ● View real-time measurements ●...
- Page 11 State Status Ring Description Warm-up Green Gas detector stabilizing after power on or restart Normal Green Normal operation Low Alarm Yellow Gas measurement has exceeded low alarm setpoint High Alarm Gas measurement has exceeded high alarm setpoint Gas Detector in maintenance mode and is not actively Offline Orange monitoring gas...
- Page 12 1592018560 MRLDS-450 QRG GB r.1.2 08.06.2020 MRLDS-450 12/12...