MSA Chillgard® L Series RefrigerantMonitoring Systems

[ The new wave of photoacoustic IR refrigerant leak detection monitors ]

Expanding the Chillgard line of refriger-ant monitors, MSA now offers the newChillgard L Series Monitoring Systems.These new products offer a wide rangeof choices and benefits and feature theutmost in detection and configurationflexibility.

The ProductsChillgard LS Refrigerant MonitorThe Chillgard LS Refrigerant Monitoruses MSA's market-leading photoa-coustic infrared technology to senserefrigerant gases. The LS Monitor is avail-able in either single-point diffusion (nopump needed) or 4-point pumped ver-sions for remote sampling. The monitorcan work either as a stand-alone unit orin conjunction with the Chillgard LCControl Module.

For more information on the Chillgard LSRefrigerant Monitor, see Data Sheet#07-2042.

Chillgard LC Control ModuleThe MSA Chillgard LC Control Modulecan communicate with up to eight sam-ple points from Chillgard LS RefrigerantMonitors over an RS-485 communicationline. The Chillgard LC Control Module canremotely display gas concentration,alarm status, calibration and fault diag-nostics for the LS Monitors.

Features for the Chillgard LC ControlModule are provided at the end of thisdata sheet.

Chillgard LE Refrigerant MonitorThe Chillgard LE Monitor also uses pho-toacoustic infrared sensing technologyto sense refrigerant gases. The ChillgardLE Monitor is available in single-pointdiffusion, single-point pumped and 4-point pumped versions. The LE Monitorcontains the sensor and the controlmodule in one enclosure.

For more information on the Chillgard LERefrigerant Monitor, see Data Sheet#07-0008.

The ApplicationsRefrigerant monitoring needs vary basedupon chiller size, # of chillers, # of refrig-erant gases to be detected, power avail-ability, need for entry way signaling andbudget. The L Series RefrigerantMonitoring Systems allow you to makethe right solution to meet your needs.

Typical ChillerConfigurations and the L Series SolutionsFigures 1-4 illustrate four possible config-urations for the Chillgard L SeriesSystems. Other configurations are possi-ble. Contact your trained MSA salesassociate for help in configuring the sys-tem of monitors and controllers to meetyour needs.

Powering the L SeriesSystemsThe L Series Systems provide the maxi-mum flexibility available for powering.

Each system can be configured throughMSA's assemble to order process tomeet your power requirements. TheTable below summarizes the possiblepowering configurations for the L Seriescomponents.

MSA Chillgard® L Series RefrigerantMonitoring Systems

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Figure 1: A single chiller located in the mechanical room. The Chillgard LS Monitor(s) islocated near the floor for detection of the refrigerant gas. The LC Module is located ateye level providing gas concentration and alarm indication. (Chillgard LS Monitor can

exist as a stand-alone monitor.)

Chillgard LCInput Output24 VAC N/A110/220 VAC 24 VDC (std) or

24 VAC Option**powers up to 6 diffusion LS units or two 4-point LS pumped units

Chillgard LS Input Options24 V AC/DC 110/220 VAC

Chillgard LE Input24 V AC/DC110/220 VAC

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Figure 3: The Chillgard LC ControlModule is located outside of themechanical room providing entry waysignaling and control of the ChillgardLS Monitor(s) located inside of theroom.

Figure 4: A Chillgard LE Monitor is located in the mechanical room providing integrat-ed sensing and controlling. Up to four points of monitoring provide for maximumprotection around the chiller.

Figure 2: Two chillers containing differentrefrigerants requiring only one samplepoint each. The refrigerant-specificChillgard LS Monitors are located near thechiller with the refrigerant of interest. TheLC Control Module provides monitor-spe-cific information for both Chillgard LSMonitors.

[ The new wave of photoacoustic IR refrigerant leak detection monitors ]

Note: This Data Sheet contains only ageneral description of the productshown. While uses and performancecapabilities are described, under nocircumstances should the product beused except by qualified, trainedpersonnel, and not until the instructions,labels or other literature accompanyingthe product have been carefully read andunderstood and the precautions thereinset forth followed. Only they contain thecomplete and detailed informationconcerning this product.

DS 07-0009May 2002 (L) © MSA 2002 Printed in U.S.A.

Instrument Division:P.O. Box 427, PittsburghPA 15230 U.S.A.http://www.msanet.com

In U.S.:Phone: 1-800-MSA-INSTFax: 1-724-776-3280

In Canada:Phone: 1-800-MSA-INSTFax: 1-905-238-4155

In Mexico:Phone: 52 (5) 5 76 64 44Fax: 52 (5) 3 59 43 30

MSA International:Phone: 412-967-3228Fax: 412-967-3373

Offices and representativesworldwideFor further information:

Chillgard L SeriesCommunication

* Chillgard LC and LS Modulescommunicate over a twistedpair RS-485

* Chillgard LC Control Modulerecognizes each sensor modulecommunicating to Chillgard LCModule and the gas type beingmonitored by each sensormodule

* System is expandable-moresensor modules can be added tothe RS-485 network later

* Chillgard LC Module detectscommunication loss with sensormodules

* Class two wiring allows powerand signal wiring to be run

together from the Chillgard LCModule to the LS Module

* Output options of Chillgard LC,LS and LE Modules givetremendous flexibility whenused in conjunction with abuilding automation system.

Chillgard LC ModuleFeatures

* Expandable: Configurable with upto 8 LS sensor module points ofdetection

* Easy to use: 20-position LCDdisplay with 4-button keypad

* Display software provides gasconcentration, alarm status,calibration and fault diagnostics

* 3 LEDs-POWER, FAULT andALARM-give a quick visual

indication of monitor status* 4 internal relays: FAULT and 3

ALARM levels * 24 V output can power remote "L"

Series sensor modules* Beacon option* 85 db piezo horn; with

100 db option* Analog outputs: 0-10 V and

4-20 mA* Serial output: RS-232 with

datalogging and RS-485 modbus* Water- and corrosion-resistant

enclosure* Power: 24 V AC or DC, 110/220

VAC, 50/60 Hz option