SCM4 - Carbon Monoxide Detector
Contents
1. F 0 to 50 C 15 to 90 R H non condensing Storage Environment 32 to 68 F 0 to 20 C at lt 80 R H with battery removed from meter Battery 9V Battery Life 150 hours typical alkaline Auto Power Off After 15 minutes Storage To rage sensor integrity do not store in areas containing solvent vapors This includes aerosols such as air freshener wax polish window cleaner and all organic solvents CO Detectors and Cracked Heat Exchangers A CO detector cannot tell you if a heat exchanger is good A CO detector can indicate that a heat exchanger may be cracked only if all of the following conditions occur simultaneously The flame must generate high con centrations of CO lack of oxygen excess fuel high temp Enough exhaust gases must be emit ted from the heat exchanger crack The exhaust gases from the crack must not be diluted too much before coming in contact with the sensor A cracked heat exchanger may leak CO in a small stream You may measure high concentrations at one point but low concentrations only an inch away 4 Theheat exchanger must be the only possible source forthe CO detected _ N W Limited Warranty This meter is warranted against defects in material or workmanship for one year from date of purchase Fieldpiece will replace or repair the defective unit at its option subject to verification of the defect This warranty does not apply to defects resulting2. from abuse neglect accident unauthorized repair alteration or unreasonable use of the instrument Any implied warranties arising from the sale of a Fieldpiece product including but not limited to implied warranties of merchantability and fitness for a particular purpose are limited to the above Fieldpiece shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim of such damage expenses or economic loss State laws vary The above limitations or exclusions may not apply to you CO Exposure Effects Minimal Max allowable concentration for eight hours EPA and ASHRAE Max for continuous exposure for one 35 PPM hour EPA and ASHRAE 50 ppm Max for eight hours OSHA Trips installed CO detectors UL2034 ieee specifies a max exposure of 100 min In two to three hours slight headache tiredness dizziness nausea UL2034 specifies a max exposure of 35 min In one or two hours frontal headaches In three hours life threatening UL2034 specifies a max exposure of 15 minutes Note Effects can vary significantly depending on age sex weight and overall health For Service In the USA call Fieldpiece Instruments for one price fix all out of warranty service pricing Send check or money order for the amount quoted Send the meter freight prepaid to Fieldpiece Instruments Send proof of date and location of purchase for
3. in the mouth of the cup You should see readings in the 100s Take it out if it approaches 1000PPM CO Sensor Replacement The SCM4 uses a carbon monoxide smart sensor If you are seeing erratic CO readings or no readings in a known CO environment you likely need to replace the sensor 1 Obtain replacementsensor model RCM4 from your local distributor 2 Remove sensor cap by removing the 4 screws 3 Directly pull out old sensor 4 Hold the new sensor by the sides While holding the sensor on the sides press down to secure the new sensor Do not press the new sensor from the top 5 Ifthe sensor is incorrectly installed CO Err will be displayed and the meter will automatically shut down after 5 seconds waea Fieldpiece oy Combustion Check with AutoPump Accessory Heads Sensor Disposal The RCM4 Replacement carbon monoxide smart sensor contains sulfuric as well as precious metals The sensor should be recycled properly through a local electronic waste center T Abas VACUUM Vacuum Gauge
4. in warranty service The meter will be repaired or replaced at the option of Fieldpiece and returned via least cost transportation Outside of the USA please visit www fieldpiece com for service contact information Fieldpiece Designed in USA MADE IN TAIWAN www fieldpiece com Fieldpiece Instruments Inc 2013 v08 Maintenance Clean the exterior with a dry cloth Do not use liquid Battery Replacement When the meter displays L the battery should be replaced Turn your SCM4 off and replace the 9V battery Check Your Sensor Coffee Cup CO Test To demonstrate that your CO sensor works turn a ceramic coffee cup upside down and slide it over the edge of a counter or desk to expose about a third of the mouth of the cup Burn a cigarette lighter inside the exposed mouth of the cup Don t burn the counter When the flame starts to flicker you ve burned up most of the oxygen in the cup creating carbon dioxide and now you re starting to produce carbon monoxide Bring the flame in and out of the mouth of the coffee cup to just keep the flame alive The longer you keep the flame flickering the More Instruments from Fieldpiece OOo oo LI inh Lie M Armonphar e Pressure Digital Refrigerant Manifolds smana e e bar Psig MkPa Psp in L L cmHg GROG onana i e pie more CO you produce After 10 seconds of flickering extinguish the flame and put the CO head
5. Fieldpiece Carbon Monoxide Detector OPERATOR S MANUAL Model SCM4 Carbon Monoxide Detector Measures CO in PPM Fielapiece scema Y Display Auto Power Off APO APO Enabled X rm Real Time CO ppm Measurement Maximum CO ppm Measurement Controls ON OFF Hold for one second to toggle power Cancel out any ambient nominal CO See Zero Set Toggle backlight on display ENL Quick Start 1 Install 9V battery located in the bat tery compartment 2 Press ON OFF for 1 second to power on the SCM4 in a nominal CO envi ronment such as outdoors Note 10 second warm up ensues 3 If necessary press ZERO while out doors to set the ambient CO ppm 4 Carbon monoxide CO above nomi nal levels will be displayed in parts per million ppm 5 PressON OFF for 1 second to power off Certifications C Tick N22675 N22675 E c YO WEE RoHS Compliant Instrument Muted Low Battery Mute the beep Hold for one second to check battery remaining Hold while powering ON to disable APO Show maximum measurement Description The SCM4 standalone carbon monoxide detector measures carbon monoxide in parts per million ppm It is intended to measure levels of CO in still ambient air The most practical application of the SCM4 is to determine if the indoor CO levels are higher than outdoor levels and to deter
6. ful chemicals such as methanol etha nol or dirt the filter can deteriorate and or impede diffusion of CO to the sensor Zero Set As needed set the reading to zero in a known zero CO atmosphere and in a temperature similar to the sample air to be tested Zero only when ambient air is within specifications and probe is in equilibrium temperature and relative humidity with ambient To zero hold the ZERO button for one second or until ZERO is displayed Note For safety reasons the SCM4 will not zero if reading is above 5ppm WARNING A Extended exposure to even relatively low carbon monoxide concentrations can be hazardous to human health Evacuate areas of significant CO concentration immediately See the CO Exposure Effects section of this manual CAUTION A Do not take measurements directly at a tailpipe or at a flue See Precautions Do not rely solely on a carbon monoxide measurement to determine if a heat exchanger is bad See CO Detectors and Cracked Heat Exchangers section The majority of toxic gas sensors contain sulphuric acid electrolyte and the chemical hazard is mainly related to the corrosive nature of this compound These sensors also contain platinum ruthenium gold silver carbon some of which are toxic Any skin or eye contact with the contents of these sensors should be washed immediately with copious amount of water Obtain medical advice Electrochemical gas sensors are sealed uni
7. mine the source In many cases it can help locate a source of CO The SCM4 uses a fast reacting electrochemical sensor that does not consume chemicals and can easily be replaced in the field if needed Sensor life is primarily determined by the type of exposure How to Use Walk Around Test The SCM4 responds almost instantly to changes in CO levels in the air If you see a difference in CO levels from outside to inside you need to find the source of the CO Walk around and watch the display By constantly going towards the area of higher concentration you can determine the source of the CO Persistent sources of CO such as malfunctioning combustion equipment in occupied spaces must be serviced immediately These can be life threatening When searching for sources of CO make sure that you never put yourself or anyone else in danger of excessive exposure to CO Overexposure to CO can have long term health effects and can be fatal Precautions 1 Do not measure gas engine exhaust or other high CO or highly contami nated gases High levels of CO and other contaminants can ruin the sensor and be a health hazard 2 Do not take readings directly in stream of air at register or in a flue 3 AllowenoughtimeforSCM4toreach ambient temperature and RH 4 The sensor has built in permanent non replaceable filter to filter out trace concentrations of SO NO and most hydrocarbons If exposed to high concentrations of harm
8. ts containing an aqueous electrolyte and a combination of other substances as detailed above Provided these sensors are used only for their intended application they do not represent a chemical hazard The sensors must not be exposed to temperatures outside the range 50 C to 60 C Toxic gas sensors should not be exposed to organic vapours which may cause physical damage to the body of the sensor for example 1 2 dichloroethane Should any sensor be so severely damaged that leakage of the contents occurs then the following procedures should be adopted a Avoid skin contact with any liquid or internal component through use of protective gloves b Disconnect sensor if it is attached to any equipment c Use copious amounts of clean water to wash away any spilt liquid This is particularly important in equipment where the sensor involved contains sulfuric acid or phosphoric acid because of the corrosive nature of these electrolytes Specifications Sensor Type Electrochemical specific to C0 Sensor Calibration Factory calibrated 205 ppm CO Range 0 to 1000 ppm 0 to 2000 ppm less than 5 minute exposure time Initial Accuracy 73 F 9 F lt 75 R H 0 15ppm 5 reading 1 ppm after zeroing 16 35ppm 5 reading 2 ppm after zeroing 36 1000ppm 5 reading 5ppm after zeroing Long Term Drift less than 5 per year depending on use CO Air Sample Temperature Range 32 to 105 F Operating Environment 32 to 122
Download Pdf Manuals
Related Search