HP OS-3 User's Manual
Contents
1. found on the Eco Sensors website www ecosensors com CE MOUNTING HOLES 4 7 mm 3 16 dia 73mm 2 7 8 centers ib 0 10 ppm Relay ECO SENSORS Power 05 3 Ozone Switch Precalibrated sensor module SM 10 Plugs into 1 meter cable from the OS 3 SPECIFICATIONS Sensor Heated metal oxide semiconductor Operates at 200 degrees C The sensor is incorporated in a precablibrated preamplifier module which plugs with a cable from the OS 3 Ozone Switch Standard operating range 0 10 ppm Accuracy 20 in the 5 10 ppm range Response time Within 2 minutes of when ozone reaches the sensor Temperature and humidity range 50 80 deg F 10 27 deg C For indoor use only 30 60 relative humidity Supply voltage required 12 24 volts DC 200 mA Ground Adapter plug 5 5mm 2 5mm female center Relay contacts rating SPDT non latching 5 amps 250 volts AC or 1 8 HP inductive load Size 3 X 2 1 2 X 15 8 76 X 64 X 42 mm Weight 5 oz 140 grams Conformity This product conforms to the European Community ICE requirements for emissions EMI and interference immunity SAFETY FEATURES Loss of power protection relay opens shuts off generator when the instrument loses Power Enclosure Flame retardant ABS UL approved Relay UL and CSA approved Electrical a Circuits operate at 24 volts 200 mA or less b Power input circuitry includes automatically resetting fuse polari2. vary from state to state RECORD YOUR SERIAL NUMBER HERE KEEP THIS MANUAL FOR YOUR RECORDS Eco Sensors is a registered trademark of Eco Sensors Inc Ozone Switch is a trademark of Eco Sensors Inc c Eco Sensors Inc 2000 Revision 1 For OS 3 REV 1 Relay Contacts 5A 250 V Max Sensor Module Cable Connection RECOMMENDED ACCESSORIES FOR THE OS 3 OG 1 Ozone Test Generator Hand held Generates up to about 7 ppm for verifying instrument response OG 2 Ozone Source Calibrator Precision UV lamp calibrated ozone source Generates 1 ppm reference concentration Battery operated Small and simple to use DL Series Data Loggers Tiny battery operated data loggers record data for later analysis in PCs Set Point Adjustment Scale PPM S Do Not Use Below 5 5 PPM CE wo s 100 10 SET POINT 0 10 PPM Data Logger Power in if Jack is not used 0 1V OUTPUT 12 24VDC IN SENSOR Power Jack CAUTION Avoid excessive touching of the inlet end of the sensor and keep it free from chemicals lubricants dust water etc Do not use silicone caulking compound or RTV near the sensor More information about our products and applications at www ecosensors com
3. ECO SENSORS INC OZONE SWITCH Model OS 3 INSTRUCTIONS FOR USE GENERAL The model OS 3 acts like a thermostat to control ozone generators and alarms based on an adjustable ozone set point The standard available range is 0 10 ppm The design incorporates hysteresis or a dead band to avoid system chatter The SPDT relay contacts will handle up to 5 amps at 250 volts or up to a 1 8 HP motor The OS 3 should not be used in the presence of acid gases strong VOC s or strong halogen fumes The instrument is conditionally warranted for one year Save a copy of your purchase document as a proof of purchase and date and read the warranty statement at the and of this manual OPERATION First verify that the instrument is working as received Connect your AC adapter to the power jack or your 12 24 V DC supply to terminals 4 and 5 of terminal block TB1 found on the inside back of the instrument Caution Many AC adapters and DC supplies deliver a higher voltage than on the nameplate 24 volts can be 32 volts etc Verify that the voltage to the input does not exceed 24 volts and that it is not AC In either case major damage to the instrument can result The sensor must be conditioned to burn off chemicals it may have absorbed during shipping and storage before it develops full ozone sensitivity Allow 1 8 hours warm up before attempting to test the instrument and at least 24 hours before using the instrument It is r
4. be affected by greases oils solvents and other VOC generators in the area sensitivity will appear to be reduced or by extremes of temperature and humidity by oxidizing chemicals such as acid gases sensitivity will appear to be increased Note that the instrument should be recalibrated after changing the sensor and at least annually Rough check of the instrument s functionality should be made every three months by presenting it with ozone and verifying that It detects SERVICE AND MAINTENANCE Do not attempt to do board level repairs yourself This will void the warranty SENSOR The ozone sensor is incorporated into a precalibrated module part no SM 10 This plugs into the cable from the OS 3 In the event of a sensor failure or deviation from correct calibration the senor module should be replaced rather than trying to repair or recalibrate it AC POWER ADAPTERS The Ozone Switch tm will not operate properly if it is not receiving 12 24 V DC at 200 mA Check your power supply circuit or AC adapter to ascertain that it is on and is supplying the correct power AC adapters can burn out during lightening strikes or other electrical surges but this is very unlikely that the Ozone Switch tm will completely fail during such surges due to its extensive input power protection circuity Eco Sensors can supply AC adapter for North America Elsewhere AC adapters should be purchased through our distributors or locally using specifications
5. ecommended to test the instrument for positive response with an ozone generator when the instrument is received and again at the site where the instrument is installed Eco Sensors Inc offers an inexpensive battery operated hand held ozone generator for this test purpose the Model OG 1 Adjust the set point if required It should not be set below 5 ppm A data logger can be connected to TB1 terminals 1 and 2 The output will be 0 2 volts Voltage readings are directly proportional to the ozone concentration on a scale of 1 volt 10 ppm You can now connect the Ozone Switch tm to external devices such as an ozonator to be controlled or an alarm circuit Disconnect the power to the generator control wiring and the DC power to the instrument while connecting the wiring Bring the external wiring through the bottom access hole of the instrument or drill the access holes as required Wire generator control circuits only to terminals 2 and 3 of the terminal block TB2 Do not leave oils solvents or greases on In or near the Instrument Their fumes however minor can cancel the instrument s ozone responsiveness CALIBRATION The Ozone Switch tm is shipped from the factory calibrated to detect at 10 ppm Lower values than that are settable by the calibrated control found by opening the back cover The calibration should be within 20 from 50 10 ppm We do not recommend operating with a set point for detection below 50 ppm The calibration will
6. s When in doubt operate the instrument at least 24 hours in your worst case environmental condition to see if it will operate properly WARRANTY This product is warranted against detects in materials and workmanship for one year following the date of purchase by the original owner This warranty does not include damage to the product as a result of misuse accident damage modifications or alterations and it does not apply if the instructions in this manual are not followed If a defect develops during the warranty period Eco Sensors at its election will repair the instrument or will replace it with a new or reconditioned model of equivalent quality In the event of replacement with a new or reconditioned model the replacement unit will continue the warranty of the original unit If the product should become defective during the warranty period it should be returned freight prepaid with proof and date of purchase to the address indicated by calling 800 472 6626 faxing 505 988 1315 or e mailing to sales ecosensors com Except as provided herein Eco Sensors makes no warranties express or implied including warranties of merchantability and fitness for a particular purpose Eco Sensors shall not be liable for loss or use of this instrument or other incidental or consequential damages expenses or economic loss or claims for such damage or economic loss This warranty gives you specific rights and you may also have other rights which
7. ty reverse protection diode and overvoltage protection diode PRECAUTIONS e Allow at least 1 4 hours warm up for functionality testing and 24 hours warm up for operational use Read all the instructions in this manual Keep the instrument dry Never let water or other liquids into the sensor Do not drop the instrument or subject it to continuous vibration Do not store or operate the instrument in high levels of dust When operating at lower temperatures or high humidity such as warehouses or refrigerated areas for correct and reliable operation please contact Eco Sensors or your distributors about special provisions Do not attempt to service the instrument yourself Service should only be done by authorized technicians or you will void the warranty Do not clean the instrument with cleaning chemicals or solvents Clean it with a damp cloth Do not operate the instrument near heavy aerosols spray usage or where oxygen is being administered The sensor element which is very small operates at a temperatures of about 200 deg C 392 deg F Do not operate the instrument where this could be a problem Do not operate the instrument or rely on its readings where there are high concentrations of e Chlorine or other halogen compounds e Sulfur compounds Strong VOC s hydrocarbons Urine residues and ammonia compounds Acid gases such as sulfuric or nitric acid fume
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