44-0297-00 Sherlock 102-202 VER5.3 05-02-19
SHERLOCK102/202 REFRIGERANT MONITOROperations ManualPart # 44-0297GENESIS INTERNATIONAL, INC.1040 FOX CHASE INDUSTRIAL DRARNOLD, MO ENESIS-INTERNATIONAL.COMTEL: 636-282-0011FAX:636-282-2722
TABLE OF CONTENTS1. SAFETY WARNINGS2. INTRODUCTION3. COMPONENT OVERVIEWSherlock 102/202 Control ModuleInfrared SensorSolid State (CMOS) SensorVentline SensorHigh Pressure Ventline SensorElectro-Chemical Ammonia SensorElectro-Chemical Oxygen Depletion SensorStrobe LightHorn and Strobe ComboStacked Horn and Strobe ComboAutoAlarm DialerRemote Alarm and Strobe Combo4. COMPONENT INSTALLATION5. WIRING SPECIFICATIONSSensor WiringLine Voltage Power InPower Output ( 12VDC)Alarm Relay OutputsOptional Aux Zone Isolation Alarm RelaysAlarm Components Basic Wiring6.7.8.9.HELPFUL HINTS AND STARTUP GUIDEKEYPAD BUTTON DESCRIPTIONDEFAULT SCREEN/ RESPONSE TO ALARMMENU STRUCTUREAccess MenuStatus MenuAlarm Log MenuSetpoint MenuCalibration MenuSystem Config MenuSet Time MenuTest Menu10. MAINTENANCE AND CALIBRATIONZero CalibrationMeasured Gas Calibration11. TROUBLE SHOOTINGCMOS Sensor Trouble ShootingInfrared Sensor Trouble ShootingElectro-Chemical Ammonia Sensor Trouble Shooting12.13.14.15.16.17.GLOSSARYCOMPONENTS PART LISTGENERAL WIRING SCHEMATICFIELD WIRING DIAGRAM (BLANK)RECOMMENDED ALARM SETPOINTSWARRANTY INFORMATION44-00-0297 SHERLOCK102/202 REV. 5.3 484950515253553
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SAFETY WARNINGSCAUTION, RISK OF ELECTRIC SHOCK!!!SHUT OFF ALL POWER TO CONTROL PANEL AND CONTROL CIRCUITSBEFORE OPENING ENCLOSURE DOOR AND PERFORMING SERVICE.CAUTION, RISK OF ELECTRIC SHOCK!!!RELAY CONTACTS MAY BE ELECTRIFIED ALTHOUGH CONTROL POWERTO PANEL IS SHUT OFF. ENSURE THAT ALL POWER IS DISCONNECTEDBEFORE OPENING ENCLOSURE DOOR AND PERFORMING SERVICECAUTION, IMPROPER CONNECTION OF EXTERNAL DEVICESMAY RESULT IN DAMAGE TO CONTROL SYSTEM.44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-195
This manual has been checked for accuracy. However, due to newtechnology being made available, some changes may have beenimplemented to the control but not necessarily to this manual. If youhave any questions regarding any discrepancies, please call Genesiscustomer service for clarification.644-00-0297 SHERLOCK102/202 REV. 5.3 05-02-19
INTRODUCTIONTHE SHERLOCK REFRIGERANT GAS MONITORThe American Society of Heating, Refrigeration, and AirConditioning Engineers, Inc Standard ANSI/ASHRAE 152004 Safety Code for Mechanical Refrigeration states:8.11.2 Each machinery room shall contain a detector,located in an area where refrigerant from a leak willconcentrate, which shall activate an alarm and mechanical ventilation .The International Conference of Building Official UniformMechanical Code, 2000 states:SECTION 1121 - DETECTION AND ALARMSYSTEM1121.1 General. Alarm shall be activated whenever therefrigerant vapor Permissible Exposure Limit (PEL)is exceeded. In other than machinery rooms, suchsystems shall also automatically stop the flow ofrefrigerant to evaporators within the space and stopthe flow of refrigerant in all supply lines leaving themachinery room whenever the refrigerant vapor concentration is detected at or above 50 percent of theIDLH [Immediately Dangerous to Life or Health] or 25percent of the LEL (lower explosive limit).The SHERLOCK 102, and 202 Refrigerant Gas Monitor wasdesigned to meet these and other requirements.Monitoring PanelThe SHERLOCK 102 and 202 Control Module is an ETLlisted, hard wired, permanently mounted electronic controlpanel that is capable of monitoring the analog output signalof up to two SHERLOCK Refrigerant Gas Sensors or oneSHERLOCK Refrigerant Gas Sensors and one SHERLOCKOxygen Depletion Sensors. The Control Module will activatefour Form C SPDT relay contacts based upon the programmedalarm setpoints of each sensor. The relays are referred to as K1,K2 for the first alarm level and K3, K4 for the second alarmlevel. There is optional zone isolation alarm relay (K5 & K6)for each Sensor. The Control Module can be located in the areato be monitored, or in a separate location, typically outside ofthe monitored room.GENESIS INTERNATIONAL, INC.1040 FOX CHASE INDUSTRIAL DRIVEARNOLD, MISSOURI 63010PH. (636) 282-0011 FX. (636) 282-2722ETL ListedConforms To UL Std. 3111-1Certified To CAN/CSAC22.2 Std. No. 1010.1980099544-00-0313Monitoring PointsEach monitoring point consists of an analog signal generating sensor connected to the control module via discrete, threeconductor cable. Each sensor can be mounted up to 1000 feet(longer run with3.00"special cable) away in locations where leakedrefrigerant is likely to concentrate.1040 FOX CHASE INDUSTRIAL DRIVEARNOLD, MISSOURI 63010PH. (636) 282-0011FX. (636) 282-2722ETL ListedConforms To UL Std. 3111-1Certified To CAN/CSAC22.2 Std. No. 1010.1980099544-00-0313Genesis InternationalETL Label P/N 44-03133.0 x 1.25 in1.25"GENESIS INTERNATIONAL, INC.The Sherlock gas sensors are available in three varieties:Ceramic Metal Oxide Semiconductor (CMOS) or SolidState SensorNon-Dispersive, Pyro-Electric Infrared Sensor.Ammonia & Oxygen Depletion Electro-chemical Sensor.CMOS or Solid State SensorThe SHERLOCK CMOS (Solid State) Sensor utilizes a Tin-Oxide filiment, heated to 400 F, to detect the presence ofoxygen molecules within the air. At this temperature, Oxygenmolecules cling to the filament. When a molecule of an organiccompound or a halogen strikes the filament, it displaces an oxygen molecule thus increasing the resistive value of the filament.This change in resistance is processed by the sensor circuitryto produce an analog output signal, which sent to the ControlModule as the sensor reading.Sensors are available in configurations that detect refrigerantgases by class; CFC/HCFC, HFC and Ammonia. These sensorsproduce a non-linear output signal that generally corresponds tothe concentration of refrigerant in the air.NOTE: These sensors, due to their nature, are susceptibleto detection of non-refrigerant gases and cannot distinguishthe presence of different refrigerant gases, only that there isa gas present. The CMOS sensor will detect high concentrations of gasoline, diesel, and propane exhaust and fumesfrom solvents, paints, cleansers, and others (Please callGenesis Customer Support for more information).Infrared SensorThe SHERLOCK Non-Dispersive, Pyro-Electric Infrared Sensorutilizes a detection chamber with an infrared light emmiter andan infrared Pyro-Electric photo sensor with a filtering lens. TheIR sensor will detect the presence of a certain gas by measuring the change in the intensity of light measured by the photosensor. Each sensor is designed to detect only infrared light ofa specific wavelength corresponding to the refrigerant gas tobe monitored. This change in light intensity is processed by thesensor circuitry to produce an analog output signal, which sentto the Control Module as the sensor reading.Sensors are available in specific configurations that detect certain refrigerant gases. Check with Genesis International for acurrent list a available gas sensors.These sensors produce a linear output signal that corresponds tothe concentration of refrigerant in the air. The Control Modulewill translate the analog signal and display the readings in Partsper Million values.Electro-Chemical Ammonia SensorThe SHERLOCK Electro-Chemical Ammonia Sensor utilizesa chemical cell to determine the concentration of Ammonia inthe air. The chemical cell produces small chemical reactionwith Ammonia molecules, thus producing a voltage drop acrossthe cell. When the concentration of Ammonia goes up, thevoltage drop across the cell changes. This change in voltage is44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-19Shown is a Negative Image. Actual shall havebackground black and lettering and logos white.7
INTRODUCTIONprocessed by the sensor circuitry to produce an analog outputsignal, which is sent to the Control Module as the sensor reading. The range is 0-500 ppm.Oxygen Depletion SensorThe SHERLOCK Oxygen Depletion Electro-chemical Sensorutilizes a chemical cell to determine the concentration ofoxygen in the air. The chemical cell produces small chemicalreaction with oxygen molecules, thus producing a voltage dropacross the cell. When the concentration of oxygen changes,the voltage drop across the cell changes. This change in voltage is processed by the sensor circuitry to produce an analogoutput signal, which sent to the Control Module as the sensorreading.Alarm Level SettingsThe SHERLOCK 2-Series allows you to set a unique Level1 Alarm Setpoint and delay and Level 2 Alarm Setpoint anddelay for each individual sensor. These relays can be activeNormally Open (N.O.) or Normally Closed (N.C.). When anAlarm Setpoint is exceeded, after the user set delay, corresponding alarm relays are activated Each Alarm Setpoint has aprogramable Alarm Delay, 1 to 120 minutes. Sensor readingsare required to exceed an Alarm Setpoint for the programmedamount of time before the control activates the correspondingalarm relay contacts. For example, if the Alarm Setpoint is200 and the Alarm Delay is five minutes, the control will enteran alarm condition only if the sensor detects a level of 200 orhigher for more than five minutes.Alarm IndicationAll alarms are logged to indicate which sensor went in and outof any of the two alarm levels, the time and date of the alarm.The alarm log stores the last 10 alarms. When a sensor is inalarm, a red alarm light on the front panel will flash and the onboard beeper will sound and the display will show the activatedalarm level.Alarm Relay ContactsThe SHERLOCK 2-Series provides two fused SPDT (SinglePole Double Throw) relay outputs for each alarm level thatswitch positions in the event of an alarm condition. Level 1Alarm activates #1 (REFR LEAK LEVEL 1) and #2 (REFRLEAK LEVEL 1 SILENCEABLE) relays. Level 2 Alarmactivates #3 (REFR LEAK LEVEL 2) and #4 (REFR LEAKLEVEL 2 SILENCEABLE) relays. One alarm relay on eachlevel can be silenced (returned to non-alarm state), (#2 REFRLEAK LEVEL 1 SILENCEABLE / #4 REFR LEAK LEVEL2 SILENCEABLE) when the ALARM CLEAR button on thefront panel is pushed. The other 2 alarm relays will remainactive until the alarm condition is cleared. The SHERLOCK2-Series can be programmed so that the alarm is cleared automatically when the air is cleared below the alarm setpoint(UNLATCHED) The relays can also be programmed so thealarm is latched “ON” until the alarm is manually reset. Therelays can be configured so the relays are "Energized to Alarm"(where the C-NC contacts open on alarm) or "De-Energized toAlarm" (where the relay is energized during normal operationsand the C-NC contacts close on alarm).8Zone isolation Alarm Relays (Factory Installed Option)Optional zone isolation alarm relay (#5 SENSOR A ZONE, #6SENSOR A ZONE SILENCE-ABLE, #7 SENSOR B ZONE,#8 SENSOR B ZONE SILENCE-ABLE). Each sensor can beprogrammed to activate by level 1 or level 1 & 2 alarm. Onerelay is silenceable and one is non-silenceable. This is a factoryinstalled option and cannot be retro-fitted in the field.Analog Signal Generator (Factory Installed Option)The SHERLOCK 102 and 202 has an optional 4-20 mA analogoutput generator for each sensor. Either of these signals can beincorporated to any commercially used monitoring and alarming system or in-house Data Management System. This optioncan only be installed in the factory and cannot be retro-fitted inthe field.Systems Sensor Open MonitoringThe SHERLOCK 2-Series constantly monitors the wiringto the sensors. Should any of the activated sensor wires becut or disconnected, “SENSOR ALARM” will appear on theSHERLOCK display, the#1 (REFR LEAK LEVEL 1) and #2(REFR LEAK LEVEL 1 SILENCEABLE) relays will be activated and the condition is logged.Setback Alarm SettingsIn some locations the sensor may be expected to function in twodifferent environments. For example, the sensor may have toperform in still air (i.e. with the exhaust fan off) and in movingair ( i.e. with the exhaust fan on), or the sensor may be used in alocation where changes in air quality, perhaps caused by the useof propane powered floor buffers, elevates the sensor readings.The SHERLOCK 2-Series provides a feature called SETBACKto accommodate alternate environments under which the sensor would operate. SETBACK provides a second ALARMSETPOINT and a second ALARM DELAY enabling the sensor to perform in this second environment. The SHERLOCK2-Series switches to the second set of parameters when a drycontact (i.e. air flow switch, sail switch or timer switch) closesor on a daily time schedule.Each sensor can be programmed with one of five SETBACKoptions:1) No SETBACK2) SETBACK triggered by setback input 1 and theSetback Clock3) SETBACK triggered by setback input 2 onlyEach sensor can be programmed with only one SETBACKoption; however, different sensors may be programmed to follow different options.Genesis International Inc. offers a variety of external alarmsfor office use - A Remote Alarm, Remote Alarm with Strobe,Automatic Alarm Dialer as well as for mechanical room use a Strobe Light and a combination Horn / Strobe as well as aStackable Beacon.44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-19
CONTROL MODULESHERLOCK 102 / 202CONTROL MODULEOVERVIEWThe SHERLOCK Monitoring System was designed to monitorup to two SHERLOCK Refrigerant Gas Sensors, activating upto two alarms based upon user defined alarm level setpoints.The SHERLOCK is compliant with ASHRAE 15-2010 andMechanical Code requirements for refrigerant gas monitoring.Nema/IPSizeElectrical PollutionModel #RatingInches (mm) Category ProtectionSHER10217.25 x 8.0 x 3.0I2SHER202(184 x 203 x 76)SHER102-4 4X/IP67 12.3 x 15.0 x 8.2II3SHER202-4(305 x 356 x 178)NEMA 1 TYPE ENCLOSURE(SHER102 & SHER202)NEMA 1 Compliant Enclosure - This enclosure is intendedfor indoor use only primarily to provide a degree of protectionagainst contact with the enclosed equipment. The enclosure isnot designed to provide protection from water or to be placedin a hazardous environment. Mount only in Pollution Level 2environments, ie. environmentally controlled offices, controlrooms, or environmentally controlled machine rooms.NEMA 4X Enclosure - This enclosure is intended for eitherindoor or outdoor use, 0 to 50 C, to provide a degree of protection against corrosion, windblown dust and rain, splashingwater, and hose directed water.Power Input100 to 250 VAC, 50/60 Hz, 0.8 AmpInputsUp to two Refrigerant Sensors:orOne Refrigerant Sensor and/orOne Oxygen Depletion SensorOutputsFour (4) SPDT, 250V AC / 30V DC,5.0 Amp Alarm RelaysOptional Zone Isolation Alarm RelaysOptional 4-20mA Analog SignalOptional RS-485 for GenCom or ModbusSetback24 Hour Time ClockTwo Dry Contact Digital InputsAlarmsTwo Alarm Levels, Two SPDT Relay perLevel, Fuse On Common Terminal. Onerelay on each alarm level can be silenceablewhen in alarm. Optional zone isolation alarmrelay for each sensor.Control Operating EnvironmentTemperature 32 F To 120 F (0 C To 50 C)Humidity0 To 95% RH Non-condensingDisplay2 Line By 16 Characters AlphanumericBacklighted LCD displayKeypad5 Tactile PushbuttonsScroll Up, Scroll Down, Alarm Silent/Clear,Select/Edit/Change, Exit Function-MenuNEMA 4X TYPE ENCLOSURE(SHER102-4 & SHER202-4)Listings ETL,Conforms to UL Std. 3111-1Certified to CAN/CSAC22.2 Std. No. 1010.1Alarm IndicatorsDisplayName & Current Reading Of AlarmingSensorBuzzerBuilt-in Piezo-electric, 90db @10ft (3.05M),SilenceableLightBuilt-in Flashing red Light on front panel44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-199
IR SENSOR(Also see manual 44-0295 IR Sensor)The SHERLOCK Non-Dispersive IR Refrigerant Gas Sensorwas designed to monitor for the presence of refrigerant gaseswithin an enclosed space. The sensor is mounted within thespace to be monitored and connected by cable to a SHERLOCKSystem. The IR sensor is calibrated to a specific refrigerantgas. The IR comes in two Temperature ranges depending uponthe monitoring environments: Machine room and Extended forrefrigerated applications in NEMA 3R Aluminum (Pictured).Water-tight ABS fiberglass housing for Wash down protection(NEMA 3R) and Stainless Steel enclosure are also available.The IR Sensor is a reliable method of monitoring for refrigerant gas leaks in environments that have air quality problems.The IR will eliminate many false alarms in environments thatcontain gasoline, diesel, and propane exhaust and fumes fromsolvents, paints, cleansers, and others.ENCLOSURE RATINGNEMA 3R Aluminum,Black Powder CoatDIMENSIONSInches (mm)12.86 x 4.8 x 2.44(327 x 122 x 62)OPERATING ENVIRONMENTTEMPERATUREMachine Room 32 -110 F(0 -43.3 C)Extended Temp -40 -110 F(-40 -43.3 C)HUMIDITY0 TO 90% RH Non-CondensingPOWER INPUT12VDC, 0.4 AEFFECTIVE RANGE0 to 1000ppmSENSITIVITY 1 ppm at 77 F (25 C), 45% RHRESOLUTION1 ppmRESPONSE TIMEUnder Than 60 SecondsCALIBRATIONEvery 6 MonthsWARM-UP TIMEReadings stabilize in 6 to 7 hrsLIFE EXPECTANCYAverage of 5 to 7 years innormal environmentsAVAILABLE GAS SENSORS (Part Numbers)*Machinery Room/Walk-In Cooler ApplicationR11 - 60-0057R12 - 60-0104R22 - 60-0053R114 - 82-0260R123 - 60-0137R134A - 60-0054R402A - 60-0231R404A - 60-0052R407A - 60-0223R407C - 60-0214R407F - 60-0514R125 - 60-0466R408A - 60-0184R409A - 60-0066R410A - 60-0165R500 - 60-0067R502 - 60-0059R507 - 60-0061Ammonia/NH3 - 60-0095Extended Temperature/Freezer ApplicationR11 - 60-0058R22 - 60-0047R402A - 60-0142R404A - 60-0051R408A - 60-0065R502 - 60-0060R507 - 60-0062Ammonia/NH3 - 60-0096*Call factory for list of additional refrigerantsAPPLICATIONSTypical applications include:WineriesHVAC Chiller Equipment RoomsBakeriesRefrigeration Mechanical RoomsRefrigerated RoomsFood Processing PlantsNEMA 3R ALUMINUM HOUSING10WARNING!!!! The infrared sensor is not to beapplied into all refrigerated storage applicationswhere other toxic gases are used in the same room.Some installations are not suitable for Infraredtechnology. Misapplication may result in damageto sensor. Contact the factory for a specific list ofapproved applications.44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-19
IR SENSORLOOSEN SCREW AND SLIDE LOWER PLATE DOWN TO ACCESSWIRING AND CALIBRATION BUTTON AND OTHER FEATURESCALIBRATION LEDLED 2STATUS LEDLED 1GENESIS INT’L INC 01-0224VER .1.0 IROUTB 07-25-024CALIB.GAS CALIBRATIONINTAKELight Emitting Diodes (LED)LED L1 - LED L1 will indicate if the sensor microprocessor isoperating and if the sensor if the sensor is in test mode. Whenthe microprocessor goes through start-up, it will turn on L1 andkeep it on unless switch 5 is on or pushbutton 1 is depressed.StatusOffP13STATUS2ON1SIG OUT1 2 3 4 5 6 7 8ON SteadyON FlashingARTIFICIAL 200 PPMPUSH BUTTONCALIBRATIONPUSH BUTTONDIPSWITCHESConnector P1FIGURE 7P1-4P1-3P1-2P1-1Sherlock 3-WireGround 12V DC inGround(Not Used)Signal Output4 - 20 MilliAmpV returnV in(10-36VDC)MA returnMA outputLED L2 - LED L2 is used for zero calibration. When pushbutton 2 is pressed, LED 2 will light after 8 seconds and turn offonce the button is released.StatusOffON SteadyOPERATIONBEFORE CONTINUING, DON'T FORGET TO WRITEDOWN THE START UP DATE ON THE FRONT OFEACH SENSOR. FAILURE TO DO SO COULD VOIDTHE WARRANTY.Infrared Sensor components description and use. (Please see44-0295 Infrared sensor Manual for more information)Dip Switch -- Switches 1 to 8 are set to off at the factory.This is the standard dip switch setting for normal operationSwitches 1, 2, and 3 - Switches 1, 2, and 3 are for communications port addressing.Switch 4 - For auto long term zero compensation. It will recalibrate up to 10 ppm every 7 days. No more than 100 ppm betweenmanual calibrations. Disable for low level detection.On zero CompensationSW4 OFFDisabledSW4 ONSwitch 5 - For field testing at a set level.NormalSW5 OFFFixed 200 ppm outputSW5 ONSwitch 6 - For factory calibration.NormalSW6 OFFDefa
44-00-0297 SHERLOCK102/202 REV. 5.3 05-02-19 3 TABLE OF CONTENTS 1. SAFETY WARNINGS 5 2. INTRODUCTION 7-8 3. COMPONENT OVERVIEW Sherlock 102/202 Control Module 9 Infrared Sensor 10-12 Solid State (CMOS) Sensor 13-14 Ventline Sensor 15 High Pressure Ventline Sensor 15 Electro-Chemical Ammonia Sensor 16 Electro-Chemical Oxygen Depletion Sensor 17
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