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4600 Gas Plus - User Manual

1. Alarm 1 2 and Fail Relay Activation Indicator Figure 4 Front Panel Operations and Indications System Start Up Once all transmitters sensor rain shield etc have been assembled and installation has been completed recheck electrical connections to be sure wiring is correct Once checked the DC supply to GasPlus may be energized Once power is applied GasPlus will initialize an LCD character display test routine Verify that all character segments are displayed In addition the transmitter will detect and display sensor gas type 52 chlorine 80 oxygen etc and its full scale range Once display information is completed GasPlus alarm output is auto inhibited and loop power is held at the user selected loop inhibit level default 4 mA for about 30 seconds to permit sensor stabilization Alarm and Loop Power Inhibit The GasPlus transmitter s inhibit function prevents activation of alarms in addition to holding loop power at the selected inhibit output level see below during calibration To activate or deactivate the inhibit function use the magnet and momentarily place it over the Z ZERO calibration zone Observe the LCD indicates the IHB function is active The inhibit mode can be manually deselected by reapplying the magnet the Z ZERO calibration zone GasPlus will automatically return to run mode about 9 minutes after the last adjustment OR after 30 seconds upon
2. Using Permeation Tube Device When using a permeation tube device during a calibration session it is recommended that constant flow of zero air be established for at least 10 minutes before being hooked up to the calibration adaptor on the sensor This ensures that any analyte gas which may have been present from a previous span calibration is flushed from the tubing and adaptor Optional Sensor Functional Test These transmitters are designed to operate in many different environments In some extreme conditions the sensor may become unresponsive to the target gas due to continuous or excessive exposure to dust or dirt on the membrane or very high low humidity conditions To ensure a unit continues to function a sensor test should be considered Functional tests can be conducted by exposing the sensor to the target gas Follow all necessary safety precautions while conducting this test The frequency and necessity of this check is dependent upon the specific characteristics of the site in which the sensor is located and should be determined by the user Zero Calibration Procedure To zero the GasPlus proceed as follows STEP 1 Inhibit the 4 20 mA output by momentarily placing the magnet over the ZERO calibration zone Observe the LCD indicates the function is active STEP 2 Install the calibration adaptor or flow cell to the GasPlus transmitter see Figure 5 Make all appropriate tubing connections per
3. RED AE The 4600 and 4688 IR relays are all single pole note that the high alarm on the 5300 is a double pole relay Single and Double Throw The number of throws refers to the number of contact positions available The contacts on single throw ST relays operate in normally open mode or normally closed mode but not both The contacts on double throw DT relays operate in both normally open and normally closed modes Note that a single throw relay only requires 2 terminal block positions common and NC or NO output whereas a double throw relay requires 3 terminal block positions common NC output NO output Single Throw Double Throw Ls ET or a Although the 4600 and 4688 IR relays are double throw only 2 positions are available on the terminal block due to space limitations Thus the relays are effectively single throw and must be ordered in NO or NC configuration Summary of 4600 and 4688 IR Features The 4600 and 4688 IR provide 2 SPST alarm relays and 1 SPST fail relay The relays can be either NO or NC however the position must be specified when the instrument is ordered All relays can be set normally energized or normally de energized at the instrument and the relays can be set latching or non latching 34 Manual 087 0005 04 2008 SCOIT HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter Manual 087 0005H 04 2008 35
4. 0030 Manual 087 0005H 04 2008 31 Series 4600 Gas PLUS Universal Toxic Gas Transmitter Rock Solid Sensors continued CONT HEALTH amp SAFETY Call 800 247 7257 or Your Local Sales Representative R S Hydrogen Bromide HBr Low Humidity Model 94 8 Digit Prefix Suffix 096 2334 XXXX 1 3 PPM 5 PPM 10 PPM 15 PPM 20 PPM R S Hydrogen Cyanide HCN Low Humidity Model 20 8 Digit Prefix Suffix 096 2724 XXXX 1 PPM 0001 2 PPM 0002 3 PPM 0003 5 0005 10 0010 R S Hydrogen Bromide HBr High Humidity Model 95 8 Digit Prefix Suffix 096 2335 XXXX 1 PPM 0001 3 PPM R S Hydrogen Cyanide HCN High Humidity Model 19 S Digit Prefix Suffix 096 2785 XXXX 1 PPM 0001 2 PPM 0002 3 PPM 0003 5 0005 10 0010 R S Ozone Low Humidity Model 76 8 Digit Prefix Suffix 096 2377 XXXX 1 PPM 0001 3 0003 5 0005 10 0010 15 0015 20 0020 25 0025 30 0030 R S Sulfur Dioxide SO High Humidity Model 97 8 Digit Prefix Suffix 096 2337 XXXX 0010 0015 0020 0025 0030 R S Ozone High Humidity Model 77 8 Digit Prefix Suf
5. 1000 10 0010 Manual 087 0005H 04 2008 29 Series 4600 Gas PLUS Universal Toxic Gas Transmitter HEALTH amp SAFETY Traditional Sensors Call 800 247 7257 or Your continued Local Sales Representative Hydrogen Sulfide H2S Methylene Chloride Ozone Silane SiH Hi Humidity gt 50 CH2 CI2 Model 60 Model 68 Model 81 Model 34P 8 Digit Prefix Suffix 8 Digit Prefix Suffix 096 1961 XXXX Lo Humidity lt 50 Model 72 8 Digit Prefix Suffix 096 1959 Hydrogen Sulfide H2S w Low Methanol Sensitivity Model 21 8 Digit Prefix Suffix 096 2751 XXXX Methanol CH3OH Model 59 8 Digit Prefix Suffix 096 2148 XXXX 500 0500 Methyl Hydrazine MMH Model 35 8 Digit Prefix Suffix 096 2423 XXXX 50 0050 Model 44 8 Digit Prefix Suffix 096 2188 XXXX 25 0025 Hydrogen Sulfide H2S Methyl lodide CH3 1 8 Digit Prefix Suffix Methyl Mercaptan CH3SH Model 46 8 Digit Prefix Suffix 096 2348 XXXX 5 PPM 0005 Nitric Oxide NO Model 86 8 Digit Prefix Suffix 096 1966 XXXX Nitrogen Dioxide NO2 Model 84 8 Digit Prefix Suffix 096 1964 XXXX 25 PPM 0025 50 PPM 0050 100 PPM 0100 250 PPM 0250 Nitrogen Trifluoride NF3 Model 33P
6. Application Note 2 Wire Configuration Split Power Supplies GROUND CONDUCTOR must not be used to eee provide instrument DOS PLC Etc power Any configuration 090 Ro which causes more than INPUT 8 VDC to be present on INPUT the loop terminal relative to earth will ao Die damage the instrument WIRE IS RECOMMENDED FOR ELECTRICAL CONNECTIONS EMI RFI ALERT When installing transmitters GROUNDING NOTE IT IS RECOMMENDED IN ORDER TO equipped with internal MINIMIZE GROUND LOOP PROBLEMS relays all power lines GROUND THE TRANSMITTER AT THE SAME GROUND AS THE 24VDC should be shielded The POWER SUPPLY best practice is to run relay Let 4600 IS POLARITY SENSITIVE switched wiring In separate REVERSING POLARITY WILL DAMAGE conduit from DC power and THE SENSOR HOUSING BARRIER control wiring and away oa UNIT TO NOT DETECT from other 110 VAC power lines or sources of EMI RFI such as variable speed drive controls GROUND CONDUCTOR EARTH GND TYPICAL RELAY USAGE ROUND SCREW 3 or 4 Wire Configuration INDICATOR POWER RED A SON ALARM W 3WIECONNECTIONS N M Wee N NOTE LOOP amp POWER ARE ni Y YELLOW RS p 228 CONNECTED INTERNALLY WARNING NEUE QE e I IN
7. 500 PPB 0500 R S Boron Trichloride BCL Low Humidity Model 26 8 Digit Prefix Suffix 096 2634 XXXX R S Arsine AsH High Humidity Model 37 S Digit Prefix Suffix 096 2458 XXXX 1 PPM 0001 3 PPM 0003 5 0005 R S Bromine Low Humidity Model 98 8 Digit Prefix Suffix 096 2366 0005 0010 0015 0020 0025 0030 R S Boron Trichloride BCI High Humidity Model 27 S Digit Prefix Suffix 096 2635 XXXX 1 PPM 0001 3 PPM 0003 5 PPM 0005 10 0010 R S Boron Trifluoride BF Low Humidity Model 28 S Digit Prefix Suffix 096 2636 XXXX 0001 10 0010 R S Bromine High Humidity Model 99 8 Digit Prefix Suffix 096 2367 XXXX 15 0015 20 PPM 0020 25 PPM 0025 30 PPM 0030 R S Boron Trifluoride BF High Humidity Model 29 S Digit Prefix Suffix 096 2637 XXXX 1 PPM 0001 PPM 0003 5 PPM 0005 10 0010 R S Chlorine CL Low Humidity Model 22 8 Digit Prefix Suffix 096 2247 XXXX 1 PPM 0001 3 0003 5 0005 10 0010 15 0015 20 0020 25 0025 30 0030
8. 8 Digit Prefix Suffix 096 2099 XXXX 8 Digit Prefix Suffix 096 1948 096 1956 XXXX 2 PPM 0002 10 PPM 0010 3 PPM 0003 25 PPM 0025 5 PPM 0005 Sulfur Dioxide SO High RH Model 83 8 Digit Prefix Suffix 096 1963 XXXX Oxygen 02 Model 80 8 Digit Prefix Suffix 096 1960 XXXX 10 0010 200 PPM 0200 25 96 0025 500 PPM 0500 Phosgene COCI2 Sulfur Dioxide SO Model 49 Low R H 8 Digit Prefix Suffix Model 75 096 2235 8 Digit Prefix Suffix 1 PPM 0001 096 2359 Model 50 w Getter 8 Digit Prefix Suffix 096 2235 XXXX 2 PPM 0002 500 PPM 0500 Phosphine PH3 Model 66 8 Digit Prefix Suffix 096 1954 XXXX 1000 PPB 1000 Tetraethoxysilane TEOS Model 58 8 Digit Prefix Suffix 096 2381 50 0050 Vinyl Chloride Monomer VCM Model 73 096 2404 20 PPM 30 Manual 087 0005H 04 2008 HEALTH amp SAFETY Rock Solid Sensors Series 4600 Gas PLUS Universal Toxic Gas Transmitter Spare Parts Sensors Call 800 247 7257 or Your Local Sales Representative R S Arsine AsH Low Humidity Model 36 8 Digit Prefix Suffix 096 2457 XXXX 1 PPM 0001 3 PPM 0003 5 0005
9. Troubleshooting When the 4600 Gas Transmitter detects a fault it drives the analog output to 3 55mA 05mA In addition the front screen will display FFF Note that some faults cannot be detected by the 4600 Gas Transmitter and therefore span gas calibration is required on a regular basis to determine proper operation Refer to Troubleshooting Chart below for various problems that may occur during operation TROUBLESHOOTING CHART SYMPTOM FFF Display Transmitter does not respond to Span Gas Transmitter Zero Drifts Manual 087 0005H 04 2008 POSSIBLE CAUSE Missing Sensor Bad Elastomeric Pad Incorrect Endcap Damaged Stainless Steel Sensor Housing Bad Elastomeric Pad Bad Sensor Bad or Weak Calibration Gas Poor Gas Delivery Wind Interfering Gas Present Rapid Temperature Changes High Gain on Sensor CORRECTIVE ACTION Tighten Endcap Replace Pad Confirm correct endcap is being used Replace Sensor Housing Replace Pad Replace Sensor Replace Gas Source Cover holes on Endcap Leave one hole open Check Tubing for cuts For Cl2 applications Confirm Regulator Tubing was not used with H2S For sticky gases HF HCI Cl2 SO2 etc Confirm that Teflon Tubing is being used Check Calibration Cup Diffuser is not plugged Place Zero Air on Sensor to determine if outside gas present If possible shield sensor from source of temperature changes Recheck Sensor Calibra
10. 073 0210 S S End Cap Rock Solid 096 2249 Power Supply Board MB w o relays 096 2202 Junction Box w 3 4 NPT bottom amp Blind Cover 096 2203 Junction Box P C B Assembly 096 2204 Junction Box Assembly 1 1 4 Fitting w 50 Ft cable 096 1987 1 Standard 4 20 Spare Transmitter Assy 3 board transmitter stack 096 1987 3 Relay equipped Spare Transmitter Assy 3 board transmitter stack 096 1942 3 Power Supply Board w Relays 096 1942 1 Power Supply Board without Relays 096 1941 1 CPU Board 096 1940 Display Board 096 2104 Dust Filter H2S amp CO only Bag of Qty 10 096 2141 H2S Filter for HCN NH3 amp Hydride Sensors Bag of Qty 5 096 2146 5 Condensing Humidity Membranes for end caps 096 2142 amp 096 2276 1 4 Turn Calibration Accessories Part Description 074 0305 1 4 Turn Teflon Rain Shield 096 2101 1 4 Turn Calibration Plug Assembly w 1 x 3 16 Barb Fitting 096 2102 1 4 Turn Flowcell Assembly w 2 1 8 NPT x 3 16 O D Barb Fitting 096 2105 1 4 Turn Sensor End Cap Assembly 096 2140 1 4 Turn Hydride Sensor End Cap Assembly w IPA Filter 096 2916 096 2142 Condensing Humidity End Cap 096 2273 1 4 Turn Sensor End Cap Assembly Rock Solid 096 2276 Condensing Humidity End Cap Rock Solid 096 2352 1 4 Turn Methyl Mercaptan Sensor 4645 End Cap Assembly w Hydrogen Sulfide Getter Filter 096 2323 096 2387 1 4 Turn Phosgene Sensor 4650 E
11. manufacturer recommendations Turn on the air flow at a rate of 500 cc min and let circulate over the sensor for 5 minutes STEP 3 Zero the transmitter by using the magnet and placing it over the over the ZERO point on the transmitter body for approximately 5 seconds Remove the magnet The display will read CAL then 0 0 the display will vary with range 0 0 0 or 0 00 STEP 4 If spanning the instrument proceed to Span Calibration STEP 2 OR take the GasPlus out of inhibit mode by momentarily placing the magnet over the Z ZERO Observe the LCD indicates the IHB function is deactivated the transmitter will automatically deactivate inhibit mode after 9 minutes Span Calibration When calibrating the transmitter span the concentration of the span gas standard should be at least 50 BUT NOT IN EXCESS OF 90 of the transmitter s range In addition if the calibration gas is not in an air balance nitrogen for example do not allow the gas to flow across the sensor for more than 5 minutes This will deplete oxygen in the sensor and cause erroneous readings and slow recovery to normal operation most sensors require a minimum of 596 oxygen for proper operation Special Span Calibration Requirements Hydrides Calibration Hydride sensors ASH Arsine PH Phosphine Diborane SiH Silane GeH Germane exhibit a significant transient response to changes of oxygen concentration This response will not effect
12. 2 i e 10 PPM i e 16 Lower Gas MM Defining Alarm and Relay Characteristics Rising Alarms are alarms which are activated whenever the gas concentration level is equal to or above the alarm setpoint Rising alarms are assigned by setting the ALARM 2 trip point above the ALARM 1 trip point Falling Alarms are activated whenever a gas concentration level is equal to or below the alarm setpoint Falling alarms are assigned by setting the ALARM 2 setpoint below the ALARM 1 setpoint Latching Alarm LA on the LCD designates the mode of operation for the GasPlus or its relay if so equipped Once the gas concentration no longer constitutes an alarm condition the GasPlus or its internal relay has to be reset to its normal condition by applying the magnet to the alarm setpoint zone Also can be know as manual reset Non Latching Alarm nLA on the LCD Transmitter must be equipped with internal alarm relays in order for this feature to be functional Designates the mode of operation for GasPlus or its relay if so equipped Once the gas concentration no longer constitutes an alarm condition the relay will reset to its normal condition automatically Also can be known as Auto Reset Normally energized En on the LCD Transmitter must be equipped with internal alarm relays in order for this feature to be functional Designates a relay which operates so that under normal conditions its contacts to the terminal strip
13. DO NOT CAP THE BOTTLE UNTIL THE GENERATION OF GAS HAS STOPPED OR THE BOTTLE MAY BURST For transmitters detecting NH Use household liquid ammonia Hold the mouth of the bottle near the tip of the sensor Do not overexpose the sensor to ammonia or it will take a long time for it to recover to zero Also do not splash liquid ammonia solution onto the membrane CAUTION FACE MAND ANo Boby USE APPROPRIATE SAFETY PROTECTION REQUIRED PRECAUTIONS fF yy Age WHEN HANDLING CHEMICALS ONLY TRAINED PERSONNEL SHOULD HANDLE ACID COMPOUNDS EXTREME CARE 26 Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT he Universal Toxic Gas Transmitter scott Health amp Safety Warranty GENERAL POLICY COVERAGE The manufacturer warrants to the original purchaser and or ultimate customer of the manufacturer s products that if any part s thereof except for those listed below prove s to be defective in material or workmanship within 18 months from the date of shipment or 12 months from the date of start up whichever comes first Such defective part s will be repaired or replaced free of charge if shipped prepaid to the factory in a package equal to or original container Exceptions to this general warranty policy are Gas Sensors Gas sensors which are part of certain products are covered by a 12 month warranty Should a failure occur within 12 months of shipment the sensor will be replace
14. R S Chlorine CI High Humidity Model 24 8 Digit Prefix Suffix 096 2295 XXXX 1 PPM 0001 3 0003 5 PPM 0005 10 PPM 0010 15 0015 20 PPM 0020 25 PPM 0025 30 PPM 0030 R S Diborane Low Humidity Model 42 8 Digit Prefix Suffix 096 2463 XXXX 1 PPM 0001 2 PPM 3 PPM R S Diborane B H High Humidity Model 43 8 Digit Prefix Suffix 096 2464 XXXX 1 PPM 0001 R S Chlorine Dioxide CIO Low Humidity Model 57 8 Digit Prefix Suffix 096 2283 XXXX 1 PPM 0001 3 PPM 0003 5 0005 10 PPM 0010 15 PPM 0015 20 PPM 0020 25 PPM 0025 30 PPM 0030 R S Chlorine Dioxide CIO High Humidity Model 78 8 Digit Prefix Suffix 096 2315 XXXX 1 PPM 0001 3 0003 5 0005 R S Fluorine F Low Humidity Model 17 8 Digit Prefix Suffix 096 2846 X XXX 1 PPM 0001 0003 0005 0010 15 PPM 0015 20 PPM 0020 0025 30 PPM 0030 R S Fluorine High Humidity Model 18 8 Digit Prefix Suffix 096 2847 XXXX 1 PPM 0001 3 PPM 0003 5 PPM 0005 10 0010 0015 0020 25 PPM 0025 30 PPM
15. are closed Such relay operation is also known as fail safe because the contact will open if an alarm condition is met Normally not energized nEn on the LCD Transmitter must be equipped with internal alarm relays in order for this feature to be functional Designates a relay which operates so that under normal conditions its contacts to the terminal strip are open Such relay operation is also known as normal or non fail safe because the contact will close if an alarm condition is met Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter Acknowledging Alarm Conditions Transmitters whose alarm parameter has been designated as atching _LA must be manually reset acknowledged once the concentration level of the target gas exceeds that of the designated alarm setpoint and an alarm immunity period of 5 seconds is exceeded To reset the transmitter momentarily apply then remove the magnet to the alarm setpoint zone Observe that the specific alarm 1 2 or F indication flag has cleared from the main display Failure Alarm Indications Alarm activation is indicated by flags on the GasPlusLCD The following are conditions upon which alarm indications will be activated Alarms 1 and 2 Target gas concentration levels have exceeded those designated in the alarm 1 and or 2 setpoints see Designating Alarm Setpoints and Relay Operation section Fail Indication A fail in
16. mA output by momentarily placing the magnet over the ZERO calibration zone Observe the LCD indicates the IHB function is active STEP 2 Unscrew the sensor end cap and remove the sensor requiring calibration Removal of the sensor will drive the loop current to its Fail value 3 5 mA STEP 3 Replace the sensor with a pre calibrated sensor and reinstall the sensor end cap refer to Pages 2 5 Ensure proper electrical connection between the sensor and the transmitter has been made see System Start Up STEP 4 Take the GasPlus out of inhibit mode by momentarily placing the magnet over the ZERO Observe the LCD indicates the IHB function is deactivated Storing Sensors Proper storage of the pre calibrated sensor is critical to ensure long term functionality of the spare sensor It is important to remember that upon disconnection of the GasPlus sensor from the transmitter assembly the bias potential required by electrochemical sensors across the sensor s electrodes will be maintained via the integral battery The battery is capable of providing up to a total of 9 months of off line power because the battery is not rechargeable off line time is cumulative providing proper storage procedures are followed When storing the sensor off line block the sensor gas hole by placing a small piece of electrical tape over the front of the sensor do not touch the membrane as this will cause damage the sensor and
17. reinstallation of a sensor 12 Manual 087 0005H 04 2008 COIT HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter The GasPlus Programming Routine Sequence 1 1 Alarm Setpoint 2 1 Relay Function 3 2 Alarm Setpoint 4 2 Relay Function 5 Inhibit Output mA Level Setting Inhibit Loop Current Normally the GasPlus outputs a 4 mA current during inhibit mode This may be changed from 3 5 mA to 20 mA on units wired in the 2 wire configuration or 0 to 20 mA on units wired in the 4 wire configuration wiring configuration is auto sensed by the GasPlus Inhibit outputs can be set in 0 1 mA increments To set the loop current output level during inhibit mode STEP 1 Place and hold the magnet over the Alarm Setpoint and Reset Zone In approximately 5 seconds the transmitter will enter program mode and display the value of the first alarm setpoint Remove the magnet and allow the transmitter to scroll through the programming routine until IHB is displayed STEP 2 Immediately following the IHB display message a value mA output setting will appear on the display By holding the magnet over the Alarm Setpoint and Reset Zone the value will change Momentarily remove the magnet then reapply to reverse the direction of change When the desired output is displayed i e 4 0 for 4 mA remove the magnet The new value will be permanently stored and the next time the inhibit func
18. the gas stream or ambient air allows humidity to condense on the sensor the water on the membrane will cause loss of sensitivity or slow response or both Once the sensor has had a chance to dry out normal operation should be restored If the source of moisture is a result of water spray or rain a rain shield may be installed on the sensor module to protect the sensing membrane Keep in mind that the some gases may chemically react with water vapor and be converted to other species ammonia hydrolyzes to form ammonium hydroxide when exposed to water vapor In addition other gases such as hydrogen fluoride are very reactive and may be absorbed on the inner surfaces of flow tubing before reaching the sensor during calibration Such questions should be referred to chemists or industrial hygienists Sensor Oxygen Requirements Scott Health amp Safety Traditional and Rock Solid Hydride and HCN gas sensors require a minimum of 5 oxygen for continuous operation under ambient conditions except the Model 80 Oxygen sensor Sensors operating in conditions of less than 596 oxygen will provide erroneous or unstable concentration data Beyond the 596 minimum oxygen concentration requirement all Traditional Hydride sensors Arsine Diborane Germane Hydrogen Selenide Phosphine Silane require constantoxygen concentration when performing sensor calibration Fluctuating oxygen concentration during calibration will result in erroneous
19. 30 After 5 days the sensor once again shows the same sensitivity as that seen prior to the high gas exposure This increased sensitivity does not occur for exposure concentrations less than or equal to 200 PPM Therefore 3 recommendations are being made 1 The 0 1000 PPM range sensor should not be calibrated any more frequently than once per week 2 The sensor should be calibrated with actual methyl iodide with a concentration of less than 500 PPM 3 If the sensor is exposed to a high concentration of gas it should be allowed a recovery period of 7 days before recalibration Alternatively it is suggested that a spare GasPlus sensor be kept to swap out any sensor exposed to concentrations greater than 500 PPM This will allow the exposed sensor time to recover Keep in mind that exposure concentrations greater than 500 PPM methyl iodide will be unusual Even if the sensor were to be exposed to a high concentration the only side effect is increased sensitivity for 3 5 days If another gas leak occurs then the sensor will simply overrespond to the gas leak which is safe sided If you have any questions please feel free to contact your local Regional Sales Manager or your inside sales support contact at Bacharach EIT New Mandatory Calibration Method of HF Sensors When spanning HF sensors using a surrogate gas such as HCI and CI might be preferred by the operator When doing this keep in mind that the cross calibration factor
20. DICATOR V POWER LOOP 7 XN F t POWER TERMINALS GREEN N 7 NOT PRESENT ON SX 1 1 2WIRE VERSION POWER SS N O O e lll ae 24DC 7 PS TCC RECEIVER UNIT 2L 42 7 DCS PLC Etc AM AM S NC POWER AND LOOP ARE x pd CONNECTED INTERNALLY DUET THE RECEIVER MUST HAVE A Eel TERMINUS 7 FLOATING INPUT NOTPRESENTON Figure 2 A Wiring Diagram 2 WIRE VERSION Manual 087 0005H 04 2008 7 Series 4600 Gas PLUS Universal Toxic Gas Transmitter HEALTH amp SAFETY COLOR CODE OF CABLE SUPPLIED BY SCOTT INSTRUMENTS je PRIOR TO JUNE 2001 lt S m sos A528 m 2 z mm TRANSMITTER _7 POWER SUPPLY BOARD LOWER 3 4 SCREW IN CONDUIT FITTING SUPPLIED BY CUSTOMER Q TO TRANSMITTER JUNCTION BOX 3N79 3LIHM N33Y9 3LIHM NMO 9 3LIHM 31IHWN3389 31IlHW3 n18 31IHW39NV3O 3LIHWNMOHWS TO TRANSMITTER BROWNWHTE ORANGEMHITE BLUE WHITE Em GREENMHITE WHITE BROWN WHITE GREEN WHITE BLUE SEALS ARE REQUIRED TO BE INSTALLED WITHIN 18 ON ANY CONDUIT ENTERING AN ENCLOSURE WHEN TWO ENCLOSURES ARE CONNECTED BY A RUN NOT OVER 3 FEET LONG A
21. Normally Closed X The 4600 and the 4688 IR can operate in either or configurations Activation Mechanism Activation mechanism describes how the relay is activated i e by removing power to the coil or by powering the coil The coil of a normally energized relay also called a fail safe relay is powered in the inactivated state activation removes power to the coil In contrast the coil of a normally de energized relay also called a non fail safe relay is not powered in the inactivated state A normally energized normally closed relay provides a high level of security by opening either when it is activated or when the instrument loses power The 4600 and 4688 IR allow users to choose an activation method for each relay Reset Mode The reset mode describes how a relay is reset A non latching relay automatically resets itself when the condition that caused its activation ends In contrast a latching relay requires some form of operator acknowledgment before it can be reset The 4600 and 4688 IR allow users to choose a reset mode for each alarm relay Single and Double Pole The number of poles refers to the number of contacts available from a single relay Single pole SP relays provide 1 contact while double pole DP relays provide 2 contacts that operate identically Manual 087 0005H 04 2008 33 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter HEALTH amp SAFETY Single Pole Double Pole
22. Rev Date ECN Part 4600 VerH 04 11 08 129032 087 0005 SCOTT HEALTH amp SAFETY Sa ies 4600 PLUS b Universal Toxic Gas Transmitter Operation amp Maintenance Manual SCOTT Series 4600 Gas PLUS HEALTH 8 SAFETY Universal Toxic Gas Transmitter Contents Introduction The Scott Health amp Safety Gas Sensor 1 Overview of Sensor Operation 1 The Sensor and Battery 1 Gas Specificty 2 Sensor Accuracy 2 Sensor Response Times 2 Sensor Life 2 Environmental Influences to the Scott Health amp Safety Sensor 3 Sensor Oxygen Requirements 3 Sensor Intrinsic Safety 4 Sensor Handling and Disposal 4 GASPLUS Installation Location Considerations 5 Physical Installation and Wiring 5 Gas Transmitter or Remote Sensor Junction Box Mounting 6 Remote Sensor Mounting Without Junction Box 6 Typical Installation 7 2 Wire Configuration 8 3 or 4 Wire Configuration 8 Junction Box Electrical Installation 9 Duct Adaptor Installation 10 Sensor Installation 11 Twist and Lock Accessories 12 System Operation System Start Up 13 Alarm and Loop Power Inhibit 13 Setting Inhibit Loop Current 14 Calibration Frequency 14 Remote Sensor Calibration 15 Storing Sensors 16 Zero Calibration 16 Zero Calibration Using Ambient Air 16 Using A Permeation Tube Device 17 Zero Calibration Procedure 17 Span Calibrati
23. SINGLE SEAL LOCATED AT THE CENTER OF THE RUN IS CONSIDERED SATISFACTORY ONLY EXPLOSION PROOF UNIONS COUPLINGS ELBOWS AND CONDUIT BODIES SIMILAR TO L AND CROSS TYPE SHALL BE PERMITTED BETWEEN THE SEALING FITTING AND THE ENCLOSURE ALL INSTRUMENTS ARE TO BE INSTALLED IN ACCORDANCE WITH LOCAL REQUIREMENTS 3 4 SCREW IN CONDUIT FITTING SUPPLIED BY CUSTOMER WIRE COLOR SIGNAL BROWN WHITE GND ORANGE WHITE SCL BLUE WHITE SDA GREENWHITE GND WHITE BROWN V TEMP WHITE GREEN VIN WHITE BLUE 5VDC 1st COLOR IS THE BASE INSULATION 2nd COLOR IS THE STRIPE EXAMPLE BLUE WHITE IS A BLUE WIRE WITH A WHITE STRIPE COLOR CODE OF CABLE SUPPLIED BY SCOTT INSTRUMENTS PRIOR TO JUNE 2001 WIRE COLOR SIGNAL BLUE GND WHITE SCL YELLOW SDA GREEN GND RED V TEMP BROWN VIN BLACK 5VDC Figure 2B Junction Box Electrical Installation 50 FT 15 2 METERS MAX SEPARATION SCOTT INSTRUMENTS SUPPLIED CABLE SPECIFY CABLE LENGTH WHEN ORDERING 50 FT MAXIMUM Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT m Universal Toxic Gas Transmitter 6 8 Curved Duct Mount Adaptor Shown IMPORTANT Prt 096 2118 6 8 Optional silver Flat Duct Mount dot used on Adaptor Prt 096 2118 F older Rock Solid Sensors only must be orient a
24. Weekly Operational Response Checks It is suggested that a sensor response test should be performed weekly to ensure the transmitter continues to respond to the target gas It is recommended to briefly expose the transmitter to a dose of the calibration gas used to span the instrument A 5 to 10 second gas stream directed at the base of the sensor should suffice in producing a response from the transmitter If response is slow typical response time will be within 5 seconds check the tip of the sensor for either dirt buildup or condensation on the membrane Both can cause slower than normal operation If an excessive dirt buildup is present the sensor is generally not repairable If there is excessive moisture present the sensor may be removed to a dry area and permitted to dry Under such conditions the cause of the excessive moisture should be determined and prevented condensing humidity wash downs etc Refer to the appendix for alternative methods of generating operational check gases GasPlus Alarms The GasPlustransmitter permits 2 alarm setpoints and relay operation for those transmitters equipped with the relay option to be specified The program routine sequence is Present Alarm 1 setpoint Alarm 1 latching non latching status displayed as LA nLA Alarm 1 energize non energize relay status displayed as En or nEn Present Alarm 2 setpoint Alarm 2 latching non latching status Alarm 2 energiz
25. Y EXPRESSED OR IMPLIED EXCEPT AS STATED ABOVE Year 2000 Compliance The Model 4600 accepts all dates in the years after 1999 as valid dates The instrument s functionality performance and accuracy will not be affected as a result of the run date or dates being processed irrespective of the century Manual 087 0005H 04 2008 27 Series 4600 Gas PLUS Universal Toxic Gas Transmitter COIT HEALTH amp SAFETY Spare Parts Call 800 247 7257 or Your Local Sales Representative Miscellaneous Part Description 096 2149 Separated sensor housing w 6 feet of cable no junction box For Duct Mount Adaptors 096 2149 1 Same as 096 2149 but without window for condensing humidity applications 096 2118 6 8 6 8 Curved Duct Mount Adaptor 096 2118 F Flat Duct Mount Adaptor 093 0097 Elastomeric Connector w O Ring 096 2065 Heater Assembly P models only 077 0127 Pump Assembly P models only 077 0120 Scott Health amp Safety Magnetic Screwdriver 096 1943 Sensor Rain Shield Calibration Adaptor used with S S End Caps 073 0165 amp 073 0210 096 1981 S S Sensor Housing 3 4 NPT w window does not include end cap 096 1981 1 Same as 096 1981 but without window for condensing humidity applications 096 2170 S S Sensor Housing 1 1 4 NPT with window does not include end cap 096 2213 S S Sensor Housing 1 1 4 NPT w o window for condensing humidity applications 073 0165 S S End Cap
26. ansmitter 2 Wire plus Gnd Typical Installation Power Supply 24 0 e Com Loop e Loop PLC DCS or Receiver TxG A Loop In e e Mounting Beam 250 ohms gt nominal Vg Ground resistance p Installation Notes At Installation as wired above but before applying power measure the voltage at the transmitter between the Loop terminal and the case case terminal is negative meter lead If this voltage Vgd falls between the range 0 5V lt Vgd lt 8V than the installation is acceptable If not when power is applied barrier damage is likely to occur due to the difference in ground potentials Note At all times the transmitter enclosure must be at earth potential to prevent a hazardous condition Remedies Improve the electrical connection between TxG and Vg until the above requirement is met line marked A in diagram above If this is not possible electrically isolate the 4600 Transmitter enclosure from local earth ground and include the grounding wire from the TxG terminal to the Vg connection line marked A in diagram above Terms TxG Transmitter Ground Vg Power supply ground Vgd Voltage ground differential difference between power supply ground and transmitter ground Manual 087 0005 04 2008 CHIT Series 4600 Gas PLUS Universal Toxic Gas Transmitter
27. concentration readings during system operation 2 Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter Note The above does not apply to the Scott Health amp Safety Rock Solid Acid Cl2 O3 and ClO2 sensors Contact Scott Health amp Safety for specific applications Sensor Intrinsic Safety An intrinsically safe circuit is simply defined as an electrical circuit which does not contain or store enough energy to cause ignition of a given explosive atmosphere GasPlus sensors are designed as intrinsically safe and with the transmitter incorporating built in safety barrier circuitry can be removed from the transmitter housing within explosive environments Sensor Handling and Disposal Do not attempt to disassemble the sensor in any way The GasPlus sensor contains various chemicals electrolytes Skin and eye contact should be avoided and should be considered hazardous The GasPlus sensor can be disposed of as ordinary trash with no special precautions Incineration in a municipal commercial incinerator poses no hazard Manual 087 0005H 04 2008 3 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm k GasPluslnstallation Location Considerations Prior to installing GasPlus consideration should be given to the following items when choosing its location 1 Orientation Always mount the sensor pointing downwards or horizontal with respect to the floo
28. d at no charge providing the sensor has been used and installed in accordance with the O amp M Manual recommendations The Phosgene sensor has a warranty of six 6 months TERMS AND CONDITIONS All product will be returned freight prepaid and allowed if it is determined by the manufacturer that the part s failed due to defective materials or workmanship The seller assumes no liability for consequential damages of any kind and the buyer by acceptance of this equipment will assume all liability for the consequences of its use or misuse by the buyer his employees or others A defect within the meaning of this warranty in any part of any piece of equipment shall not when such part is capable of being renewed repaired or replaced operate to condemn such piece of equipment This warranty does not cover consumable items batteries or wear items subject to periodic replacement including lamps and fuses This warranty is in lieu of all other warranties including without limiting the generality of the foregoing warranties of merchantability and fitness for a particular purpose guarantees obligations or liabilities expressed or implied by the seller or its representatives and by the statute or rule of law This warranty is void if the instrument has been subject to misuse or abuse or has not been operated in accordance with instructions or if the serial number has been removed SCOTT HEALTH amp SAFETY MAKES NO OTHER WARRANT
29. del 30 S Digit Prefix Suffix 096 2638 XXXX 1 PPM 0001 3 PPM 0003 5 PPM 0005 R S Silicon Tetrafluoride SiF High Humidity Model 32 8 Digit Prefix Suffix 096 2639 XXXX 1 PPM 0001 3 PPM 0003 5 0005 R S Tungsten Hexafluoride WF Low Humidity Model 23 8 Digit Prefix Suffix 096 2632 XXXX 1 PPM 0001 3 0003 5 PPM 0005 R S Tungsten Hexafluoride WF High Humidity Model 25 8 Digit Prefix Suffix 096 2633 XXXX 1 PPM 0001 3 PPM 0003 5 0005 32 Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter Appendix 1 Relay Operation and Configuration Summary The 4600 and 4688 IR offer multiple relay configurations Although this provides customers with a lot of flexibility it has also caused some confusion This tech tip defines and explains these configurations Position Position describes the relay s state when it is inactivated Normally open NO relays represent a break in the circuit the circuit is completed when the relay is activated In contrast with a normally closed NC relay the circuit is broken when the relay is activated Note that a relay s position open or closed is independent of its activation mechanism energized or de energized Normally Open
30. dication will be displayed by both the F flag indicator and FFF on the LCD A Fail indication is usually a result of either a removed or poor sensor to housing electrical connection or sensor failure discovered by the self diagnostic routine The self diagnostic routine interrogates transmitter and sensor memory transfer integrity and is continuously performed by the GasPlus Should a failure occur transmitter mA output goes to 3 55 mA 05mA Sensor Strength Failure Indication This flag will only appear during system calibration where the transmitter has applied a calibration factor of less than 150 This helps indicate to the operator that the sensor requires replacement The SEN flag will remain on until sensor is replaced There is no effect on the transmitter s mA output EFF Indication Missing Sensor Indicator This display combination is used to indicate a missing sensor or loss of continuity between the sensor and the transmitter Should this occur the transmitter s mA output goes to the Fail level 3 55 mA 05 Alarm Setpoint amp F F F Reset Zone 000100010101 II ub 12FCIS GA PLUS rN H D UNIVERSAL GAS TRANSMITTER Alarm 1 2 and Fail relay activation indicated by double flag Manual 087 0005H 04 2008 23 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter 24 HEALTH amp SAFETY Contacting Scott Health amp Safet 4320 Goldmine R
31. e non energize relay status To view or change alarm setpoints and relay latching function STEP 1 Place and hold the magnet over the Alarm Setpoint and Reset Zone In approximately 5 seconds the transmitter will enter program mode and display the value of the first alarm setpoint STEP 2 If the magnet is held in position for longer than 1 2 second the Alarm 1 setpoint will begin to change If the magnet is removed the programming routine will scroll through each programmable parameter in the sequence listed above To change any of these parameters apply the magnet to the alarm setpoint zone while the parameter is being displayed Alarm setpoints require the magnet be applied at the alarm setpoint zone and held in position until the alarm setpoint value is achieved momentarily removing the magnet and reapplying will reverse the direction in which the values scroll Changing alarm relay functions latching non latching energized non energized is accomplished by momentarily applying then removing the magnet to the alarm setpoint zone All parameters will be displayed for 7 seconds after the last alarm setpoint zone activation Manual 087 0005H 04 2008 21 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm 22 g Higher in no i Alarm Trip Point Alarm 2 i e 20 PPM y Qo em Rising iei Falling Alarm 16 50 i e Danger Trip Point Alarm Trip Point Alarm 1 w Alarm
32. een applied to the sensor The calibration factor has an inverse relationship to the amount of gain applied to derive the correct 4 20 mA output signal Sensors having a calibration factor of 150 or less are approaching the end of their useful life and should be replaced soon STEP 6 Take the transmitter out of inhibit mode by momentarily applying the magnet to the ZERO point Observe that the 2 inhibit indication flags are no longer visible NOTE The transmitter will automatically return to run mode about 9 minutes after the last adjustment After calibration is complete disconnect the calibration system The unit should now be operating properly and displaying the current gas concentration Manual 087 0005H 04 2008 17 Series 4600 Gas PLUS i Universal Toxic Gas Transmitter SCOTT HEALTH amp SAFETY 18 Important Notes on Calibration of Sensors Calibration of 0 1000 PPM Methyl lodide Sensor Please note that as of March 30 1999 Scott Health amp Safety has released a new high range CH I sensor There is an important calibration method that MUST be adhered to when calibrating this sensor Upon multiple exposures to high concentrations of gas gt 500 PPM it begins to show increased sensitivity for a duration of approximately 5 days In other words it provides a higher output when exposed to the same concentration of gas The increased sensitivity varies from sensor to sensor but is typically on the order of
33. fix 096 2378 XXXX 1 PPM 0001 3 PPM 0003 5 0005 10 0010 15 0015 20 0020 25 0025 30 0030 R S Hydrogen Chloride Low Humidity Model 92 8 Digit Prefix Suffix 096 2332 XXXX 1 PPM 0001 R S Hydrogen Fluoride HF Low Humidity Model 90 8 Digit Prefix Suffix 096 2330 0010 15 0015 20 PPM 0020 25 PPM 0025 30 PPM 0030 R S Hydrogen Chloride HCl High Humidity Model 93 8 Digit Prefix Suffix 096 2333 XXXX R S Hydrogen Fluoride HF High Humidity Model 91 8 Digit Prefix Suffix 096 2331 XXXX 1 PPM 0001 3 PPM 0003 0005 10 PPM 0010 25 PPM 0025 30 PPM 0030 R S Phosphine Low Humidity Model 38 S Digit Prefix Suffix 096 2459 500 PPB 0500 R S Phosphine High Humidity Model 39 S Digit Prefix Suffix 096 2460 XXXX 1 PPM 0001 3 PPM 0003 5 PPM 0005 500 PPB 0500 R S Sulfur Dioxide SO Low Humidity Model 96 8 Digit Prefix Suffix 096 2336 XXXX 1 PPM 3 PPM 5 PPM 10 PPM 15 20 PPM 25 PPM 30 PPM R S Silicon Tetrafluoride SiF Low Humidity Mo
34. has failed and will not operate only that it will require a 4 8 hour warm up time upon installation Once the sensor has warmed up and has become stable calibration may occur as normal Gas Specificity Each gas sensor is engineered and designed to be gas specific however the very nature of electrochemical gas detection is such that the presence of certain gases may act as an interferant to certain sensors Each sensor can have its own interferant s causing the sensor to respond electrochemically Scott Health amp Safety has tested and documented some of the known interferant These are listed in an Addendum located in the back of the manual Sensor Accuracy The accuracy of a toxic gas sensing system is limited by the accuracy of the standard used to calibrate the system For many toxic gases obtaining a high accuracy standard that is suitable for field calibration use may be difficult about the best accuracy of gas concentration achievable is 5 using a permeation system with good temperature control For this reason no fixed accuracy statement is possible The accuracy of the GasPlus sensor cannot be better than the accuracy of the calibration gas The best accuracy to be expected assuming a perfect standard is limited by the repeatability which is 2 of span full scale Sensor Response Times Electrochemical gas sensors are optimized to give the fastest possible response time while maintaining excellent zero stability a
35. ities from 350 Enq Cao ied 9 99 1000 ft minute Available for use flat ducts 6 to 8 diameter ducts custom sizes also available For use only with transmitters configured for remote sensor and without junction box Flowcell Part 096 2102 Use your Model 4600 in sample draw configurations The Teflon baffle prolongs sensor life by reducing air velocity past the sensor face Rain Shield P N 074 0305 1 4 NPT x 3 16 OD Barb Fitting Calibration Adaptor P N 096 210 101 Flowcell 096 2102 TJ 1 8 x 3 16 OD Barbed Fittings 7 Round Duct Adaptor Side View P N 096 2118 6 8 Flat Duct Adaptor Top View P N 096 2118 F Flat Di Duct Adaptor Manual 087 0005H 04 2008 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter HEALTH amp SAFETY System Operation Alarm Setpoint amp St art Up Reset Zone Not e j PLUS GAS Span Calibration UNIVERSAL GAS TRANSMITTER Zone lt Zero Calibration appears after power has been applied the sensor may not be making electrical cee Indication contact with the Cri Flag note double ss Retighten the sensor Sensor Strength end cap to ensure 4 lt Failure Indicator electrical continuity x Inhibit Activation 46 Indicator
36. kit to be used i e permeation tube device bottled gas gas generator etc and make the appropriate connections to the transmitter s calibration adaptor Attach the calibration adaptor to the transmitter s sensor assembly STEP 4 Initiate gas flow and allow the span gas to flow for approximately 5 minutes at a rate of 500 cc min NOTE When calibrating outdoors on a windy day it will be necessary to temporarily cover the holes around the circumference of the rain shield Otherwise rapid air flow caused by wind will dilute the gas standard as it enters the sensor area The holes need not be tightly sealed The transmitter should begin to respond to the calibration gas immediately The indicated gas concentration should slowly level off to a value usually close to that of the span gas concentration and remain stable STEP 5 Using the magnet place the magnetic tip over the point transmitter body hold it there reading will start to slowly move either up or down If this change in reading is moving in the wrong direction remove the magnet for a moment then replace it on the SPAN point and the reading will start to move in the opposite direction After 15 counts the change in reading will become faster Once the displayed concentration has reached the desired reading the concentration of the span gas being used remove the magnet The GasPlus will then display the span calibration factor which has b
37. nd Cap Assembly w Hydrogen Cyanide Getter Filter 096 2386 28 Manual 087 0005H 04 2008 HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter Spare Parts Sensors Traditional Call 800 247 7257 or Your Local Sales Representative Sensors Ammonia NH3 Chlorine Cl Model 85 Model 52 8 Digit Prefix Suffix 096 1965 XXXX 50 0050 100 PPM 0100 150 PPM 0150 250 0250 300 0300 500 0500 8 Digit Prefix Suffix 096 1945 XXXX Arsine lt Model 65 8 Digit Prefix Suffix 096 1953 XXXX 1000 1000 Chlorine Cl 3 PPM 0003 lt 35 R H 10 PPM 0010 Model 56 8 Digit Prefix Suffix 096 2257 Bromine Br Model 61 8 Digit Prefix Suffix 096 1949 XXXX 1 PPM 0001 15 PPM 0015 3 PPM 0003 25 PPM 0025 5 PPM 0005 30 PPM 0030 Model 53 8 Digit Prefix Suffix Carbon Monoxide 096 1946 XXXX Model 82 8 Digit Prefix Suffix 096 1962 100 0100 150 PPM 0150 200 PPM 0200 250 PPM 0250 300 PPM 0300 500 PPM 0500 1000 PPM 1000 Chlorine Oxidant 1 Model 520X 8 Digit Prefix Suffix 096 2003 XXXX Diborane B2Hc Model 67 8 Digit Prefix Suffi
38. nd minimum drift approximate sensor response times are listed an Addendum in the back of the manual If the response time appears to be slow refer to the Weekly Operational Checks within the SYSTEM OPERATION section Sensor Life Because applications are of such a variable nature only experience on a given application can truly tell what the sensor life will be GasPlus sensors will generally provide a minimum of 12 months of service in ambient air gas detection applications Extremes of humidity and temperature and exposure to dirty atmospheres containing particulate matter or oily vapors will decrease sensor life In addition extended exposure to target or other active gases may shorten sensor life In applications where only trace levels of target gas exist except under leak conditions sensor life will most likely be over 18 months While sensors may have some or even substantial life remaining it is recommended that sensors be replaced at a convenient interval between 12 and 18 months Experience in a given application or plant condition will determine the best replacement frequency Manual 087 0005H 04 2008 1 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm Environmental Influences to the Scott Health amp Safety Sensor Although the GasPlus transmitter is designed to operate at temperatures from 40 to 140 40 to 60 C the operating temperature is dictated by which gas sensor has been i
39. nstalled The GasPlus Operating Parameters Addenda see back of manual show the operating temperature ranges for each sensor type Extreme temperatures and exposure to dirty atmospheres containing particulate matter or oily vapors can affect sensor response and decrease sensor life Humidity RH has the potential to affect the performance of electrochemical sensors Gas sensors are designed to provide stable output over a range of humidity conditions Continuous exposure to relative humidity conditions from 25 to 90 non condensing RH 70 RH nominal will not affect operation of most sensors Extreme has the potential to adversely affect the operation of electrochemical sensors Atrelative humidities continuously below 25 or above 90 sensors can exhibit an early loss of sensitivity after a few days to a week of operation This is caused by a slow loss of water dry air or gain of water moist air from the internal sensor electrolyte Suspending the sensor over a jar of water for 24 hours will usually restore sensitivity to a sensor that has dried out The operation of H S and sensors will be affected by continuous exposure to relative humidity conditions below 50 RH therefore Models 4654 and 4671 low humidity sensors respectively are offered and should be used when operating under these conditions Extremely humid or wet conditions can affect these sensors which rely on an unobstructed gas diffusion path into the sensor If
40. oad Monroe NC 28110 Scott Health amp Safety may be contacted Monday through Friday 8 30 AM to 5 00 PM EST Phone 1 800 247 7257 FAX 1 704 291 8340 e mail service www scotthealthsafety com Technical Specifications Repeatability 2 FS Linearity 2 FS Output 4 20 mA Max Loop Load 2 Wire 460 ohms at 24 VDC 25 mA based 4 Wire 800 ohms at 24 VDC 25 mA based Power 18 30 VDC 0 6 W in basic configuration nominal 1 7 W max in 4 wire w relays 21 mA max 4 20 loop Display 3 5 digit LCD 0 100 concentration bargraph Alarm indication Inhibit indication Temperature Sensor See Capabilities Chart Transmitter 40 to 140 F 40 to 60 C LCD 22 to 140 F 30 to 60 C Humidity Up to 99 RH non condensing Weight 5 Ibs 2 25 Kg Separated Sensor Up to 50 15 25m Alarm Relays 2 concentration Self Diagnostic Routines 1 Fail 10 amp SPDT rated 120 v resistive load Weak sensor indication Electronic faults System memory Missing sensor Sensor configuration Approvals UL amp C UL Classified Fire and Explosion Hazards Class I Div 1 Groups B C amp D Class Il Groups E F G amp Class 1 for Standard Configuration only as shown in Figure 1 on Page 5 Sensor Life 9 months unpowered Warranties Transmitter 1 Year Sensor 1 Year Manual 087 0005H 04 2008 HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter
41. on 17 Special Span Calibration Requirements 17 Span Calibration Procedure 18 Important Notes on Calibration of Sensors 19 Weekly Operational Response Checks 22 Defining Alarm and Relay Characteristics 23 Acknowledging Alarm Conditions 24 Failure Alarm Indications 24 Alarms 1 and 2 24 Fail Indication 24 Sensor Strength Failure Indication 24 FFF Indication Missing Sensor Indicator 24 Contacting Scott Health amp Safety 25 Technical Specifications 25 Troubleshooting 26 Making Operational Check Gases 27 Series 4600 Gas PLUS SCOT Universal Toxic Gas Transmitter HEALTH amp SAFETY Contents Continued Scott Health amp Safety Warranty 28 Spare Parts 29 APPENDIX 1 Relay Operation amp Configuration 34 Toxic Gas Quick Reference Data Supplements HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter Sensor battery failure does not render the sensor useless but it will require a 4 8 hour warm up time upon installation When storing the sensor off line block the sensor gas hole by placing a small piece of electrical tape over the front of the sensor do not touch the membrane as this will cause damage the sensor and store the sensor in a cool dry place such as a refrigerator Should the sensor be kept off line for a cumulative period of time exceeding 9 months the sensor will continue to operate Sensor battery failure does not mean the sensor
42. or STEP 7 Remove the calibration adapter and re install the rain shield if necessary Note Some generators don t have air pumps with enough power to overcome the pressure drop of the porous diffuser plug in the calibration adapter In this case the diffuser must be removed prior to starting the process STEP 1 With pliers or a 9 16 wrench remove the barbed hose fitting from the calibration adapter STEP 2 Through the hole push out the diffuser with a screwdriver or a pencil Put the plug in a pocket or other safe place STEP 3 Replace the hose fitting and tighten STEP 4 When the calibration process is finished put the diffuser plug back into its hole and press it until its face is flush with calibration adapter s face ll Using calibration gas cylinders STEP 1 Attach a regulator capable of delivering 0 5 Ipm gas to the cylinder STEP 2 Connect the regulator output to a calibration adapter using a length of Teflon amp tubing or Tygon clad Teflon amp Do not apply to the sensor at this time STEP 3 Be sure the porous diffuser plug is in place in its hole in the calibration adapter STEP 4 Allow the gas to flow through the delivery tube and calibration adapter to let them equilibrate with the gas before connecting to the sensor Depending on the local environment this may take 5 to 15 minutes or longer STEP 5 While waiting check the sensor zero reading and zero it if necessary STEP 6 After
43. r 2 Gas Density For gases heavier than air it is recommended that the sensor be installed approximately 18 from floor level In these applications care should be taken to protect the sensors from physical damage For gases that are lighter than air sensors should be installed at a high level or close to the potential leak source 3 Potential Gas Sources The location and nature of potential vapor gas Sources e g pressure amount source temperature and distance need to be assessed 4 Ambient Temperature amp Relative Humidity Insure that the system is located within an area that complies with the specified operating temperature and humidity range 5 Vibration Mount the transmitter and sensor in a manner that minimizes vibration 6 Accessibility When determining mounting location consider future maintenance and calibration requirements 7 Avoid water Droplets adhering to the outer membrane of the sensor will reduce or negate sensor performance A rain shield is recommended for outdoor installations 8 Avoid strong electromagnetic fields Mounting the gas transmitter near power transformers or other strong EM fields may cause undesirable results 9 Avoid pressure and excessive air velocity GasPlus sensors are designed to measure gas concentration under normal atmospheric conditions with up to 1 LPM air flow High air velocities will result in inaccurate measurement and reduce sensor life 10 Conduit Seal
44. r Nitrogen for Oxygen Sensor ad N Regulated Flow w f COIT HEALTH amp SAFETY Tygon Tubing Teflon Tubing NOTE When using calibration kit for NH3 HCI or CI2 Tygon tubing must be installed on the barbed fitting The Teflon tubingthen slides into the Tygon Figure 5 Calibration Equipment Calibration Reminder Document your calibration schedule requirements Maintain an organized system to prevent confusion between calibrated and un calibrated sensors e Properly store all spare sensors Remote Sensor Calibration The GasPlusis designed so the sensor may be removed from the transmitter and calibrated at a remote location Fixed gas detection installations using this feature should utilize a documented calibration log see Calibration Frequency to determine sensor rotation schedules In addition spare sensor s will be required so that continuous monitoring of the detection point Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter is assured and a spare powered transmitter will be required to conduct the calibration at a remote site Prevent accidental installation of uncalibrated sensors by marking all calibrated sensors with their last calibration date or maintain them in an otherwise appropriate manner To remove and replace the GasPlussensor STEP 1 Inhibit the 4 20
45. r connection between the sensor and the sensor housing tighten the threaded sensor end cap hand tight do not overtighten as this could damage the elastomeric connector or the sensor housing 10 Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter Twist and Lock Accessories Designed for quick easy installation and removal from your GasPlus Universal Gas Transmitter Twist and Lock accessories connect directly to the standard end cap and help make your gas detection system easier to use Rain Shield Splashguard Part 074 0305 Sensor Electronics Provides protection from wet weather and hose downs Teflon construction permits use with both reactive such as hydrogen fluoride hydrogen chloride and ammonia and non reactive 1 362 gases Lab tested hole geometry protects sensors from stray 2 water droplets o Internal Pin Sensor End Cap Calibration Adaptor Part 096 2101 Delivers calibration gas directly to the sensor face without dilution from environmental interferences such as wind Barb fitting provided for tube connection to the calibration gas source gas cylinder permeation device generator Duct Mount Aqaptor Part 096 2118 6 8 6 to 8 Duct or 096 2118 F Flat Duct Monitors airflow in exhaust or ventilation ducts without drying out 125 Slot your Model 4600 sensor Able to handle flow veloc
46. s Protect the transmitter electronics from moisture by thoroughly sealing the conduit entries and tightening the cover of the transmitter housing Physical Installation and Wiring Installation of the GasPlus System requires the physical mounting of the enclosure see Figure 1 and connection of the power output lines see Figure 2A 2B The transmitter enclosure is provided with bolt holes in the mounting flange for mounting When installing GasPlus follow these guidelines ensuring that the area of installation is declassified if required STEP 1 Make all physical connections i e conduits pipes enclosure plastic spacer block junction box etc STEP 2 Unscrew transmitter cover STEP 3 Remove 2 stack transmitter boards board assembly simply unplugs 4 Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter STEP 4 Make wire connections 18 to 22 AWG wire is recommended for electrical connections in accordance with Figures 2A 2B Ensure that proper wire gauge is used and that all wire electrical grounds and sensor connections are secure and intact STEP 5 Replace transmitter stack assembly STEP 6 Screw transmitter cover on ensuring a tight seal STEP 7 Remove red label from the bottom of the sensor end cap Remote Sensor Junction Box Mounting If the application requires that the sensor be mounted remote from the transmitter care should be taken to insure
47. store the sensor in a cool dry place a refrigerator for example Should the sensor be kept off line for a cumulative period of time exceeding 9 months the sensor will continue to operate Battery failure of the sensor does not mean the overall sensor has failed and will not operate only that it will require a 4 8 hour warm up time upon installation Once the sensor has warmed up and has become stable calibration may occur as normal Zero Calibration The transmitter s zero is set by adjusting the loop output to 4 mA while the sensor is exposed to air which is free of the gas being detected and any interferant gases which may be present Zero Calibration Using Ambient Air Ambient air may only be used for the zeroing process if it is certain to be free of both the target gas and any possible interferants otherwise a source zero grade air should be used except when zeroing an Oxygen transmitter which uses Nitrogen for this procedure Manual 087 0005H 04 2008 15 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm IMPORTANT If using the transmitter with a Scott Bacharach Hydrogen Sulfide scrubber part 096 2141 the scrubber MUST be in place prior to calibration TUBING ALERT Ensure the proper tubing is used when performing span calibration Teflon tubing should be used when calibrating with hydrogen fluoride or acid gas Calibration Factor 50
48. ted as shown Separated y Sensor 096 2105 1 4 turn Sensor End Cap Optional Silver 4600 Rock Solid P Sensor IMPORTANT Stainless steel sensor housing must be isolat ed from ground Round Duct Adaptor Side View Flat Duct Adaptor Top View Figure 2C Duct Adaptor Installation Manual 087 0005H 04 2008 9 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm Alignment Post Ensures the proper alignment of the sensor for insertion into the sensor housing Sensor Housing Elastomeric Connector This gray foam like pad provides an electrical pathway between the sensor and the sensor housing Align the notch with the pin alignment hole in the sensor IMPORTANT Sensor should always be facing downward or horizont al Cont act factory for other _ Threaded End Cap installations A DA Hand tighten ONLY Sensors should s Note Transmitters are supplied with a 1 4 turn Twist and Lock End Cap See never point up 4 Installing Transmitter Accessories at any angle Figure 3 Installing The GasPlus Sensor Sensor Installation Figure 3 depicts the GasPlus sensor installation Be sure to include the elastomeric connection pad when installing the sensor into the sensor housing Rotate the sensor until it locks into the alignment pin The gas name range will be visible through the housing front To ensure prope
49. that all code and regulatory requirements are met In these applications it is recommended that the sensor be separated from the transmitter no more than 50 Additional items needed will be a junction box and sensor cable see Figure 2B These items can be ordered from Scott Health amp Safety Conduit must be obtained from your local vendor Remote Sensor Mounting without Junction Box The sensor cannot be located more than 50 feet away from the transmitter and the stainless steel sensor housing must be electrically isolated This installation is not rated for hazardous locations Typical Power Consumption 4 20 Loop 21mA Control circuitry 8mA Relays 20mA each Total 89mA 2 1 watts 24VDC MOUNTING SPACER PLATE 2 3 4 NPT CONDUIT 074 0289 MUST BE INSTALLED FITTINGS CONDUIT BEHIND EITHER THE TRANSMITTER CUSTOMER SUPPLIED OR THE JUNCTION BOX IF OPTION IS ORDERED p SS I Z Clm NON 5 1 8 130 2mm Z 5 23 32 s 145mm MOUNTING SURFACE 5 16 8mm MOUNTING HOLES TYP 2 PLCS lt 8 7 8 MAX 225mm 2532 Figure 1 44 16 lt 6 3 16 157mm REF GasPlus Dimensions 103 2mm Manual 087 0005H 04 2008 5 11 16 144mm 1 2 13mm Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter rmm 4600 Gas Tr
50. the delivery tube and adapter have equilibrated with the gas attach the adapter to the 4600 sensor end cap remove the rain shield first if there is one ACD s Advanced Calibration Designs model 300 and EC Cal Cal 2000 do not have this problem You may suspect your generator is one that has a weak pump if the sensor s response is zero or much lower than anticipated Manual 087 0005H 04 2008 19 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter PEATA SAFETY STEP 7 Continue the gas flow and after five minutes adjust the span to agree with cylinder label value STEP 8 Shut off the gas remove the calibration adapter from the end cap and reinstall the rain shield if there is one Note Sometimes regulators require time to adjust after changing from one gas type to another For example a regulator that has been on an 5 cylinder will have absorbed H S especially when it is brass The sulfided interior will destroy gasses such as CI until enough time and gas have passed to clean out the regulator In extreme cases it will probably be better to use a new regulator and then reserve it exclusively for use with the particular gas i e chlorine 20 Manual 087 0005H 04 2008 HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter NOTE When det ect ing oxygen deficiency the ALARM 2 set point should be BELOW the ALARM 1 set point a falling alarm
51. the sensor s usefulness when operating in normal atmospheric breathing air Manual 087 0005H 04 2008 COIT HEALTH amp SAFETY Series 4600 Gas PLUS Universal Toxic Gas Transmitter IMPORTANT The operat ion response check is not int ended bea quant it at ive measurement of the transmitter s out put signal However when calibrating a hydride sensor hydride gases bottled in backgrounds other than 20 996 oxygen should not be used as the sensor will see a change in oxygen background For this reason permeation tube devices are recommended with normal air as a diluent Ammonia NH Note It is acceptable to use ammonia sensors in reduced oxygen environments down to 296 providing that the sensor is stored within the environment for 24 hours prior to calibration in the same environment Span Calibration Procedure To span the GasPlustransmitter proceed as follows STEP 1 Ensure that the transmitter inhibit feature is activated and if using the hydrogen sulfide scrubber part 096 2141 that it is in place STEP 2 Verify that the span gas being used has not exceeded its expiration date Old or improperly stored calibrations gases can degrade causing inaccurate calibration A minimum gas concentration of 1596 of the full scale range is required however a gas concentration of a least 5096 of the full scale range is recommended BUT NOT IN EXCESS OF 90 STEP 3 Assemble the specific calibration
52. tion Factor Sensors with Low Calibration Factors tend to drift more 25 Series 4600 Gas PLUS SCOTT Universal Toxic Gas Transmitter HEALTH amp SAFETY Making Operational Check Gases The following methods can be used during operational response checks of the transmitter For transmitters detecting Cl ClO O Br F Place a teaspoon of powdered calcium hyporchlorite in a small plastic bottle and cap tightly When you wish to test a sensor simply remove the cap and hold the mouth of the bottle near the tip of the sensor For transmitters detecting Observe Extreme Caution Place about 10 cc of concentrated hydrochloric acid approximately 38 HCl into a small plastic polyethylene bottle Unscrew the cap and hold the mouth of the bottle near the tip of the sensor For transmitters detecting HF Observe Extreme Caution Line the bottom of a small plastic polyethylene bottle with 1 or 2 pieces of laboratory filter paper Add 2 3 drops of concentrated hydrofluoric acid 49 and cap tightly Unscrew the cap and hold the mouth of the bottle near the tip of the sensor For transmitters detecting HCN SO H S Observe Extreme Caution Place about 10 cc of 1N sulfuric acid into a small plastic polyethylene bottle Add a few crystals of sodium sulfide to the acid just prior to testing the sensor since the resulting SO gas will quickly dissipate Hold the mouth of the bottle near the tip of the sensor CAUTION
53. tion is activated the transmitter will output at that value STEP 3 After period of a few seconds the GasPlus will return to normal operation and the IHB flags will disappear Calibration Frequency All GasPlus transmitters require calibration upon receipt from the factory after which the calibration interval for each transmitter should be independently established through a documented procedure which maintains a calibration log Calibration frequencies will vary depending upon individual applications Harsh environments will generally require more frequent calibration At a minimum it is recommended that these calibration frequencies be followed Zero Calibration Upon system power up every 30 days or less upon new or old sensor re connection to the transmitter Oxygen Transmitter exception every 90 days Span Calibration Upon system power up unless sensor has been pre calibrated every 90 days or less Oxygen Transmitter exception every 30 days Manual 087 0005H 04 2008 13 Series 4600 Gas PLUS Universal Toxic Gas Transmitter 14 UNIVERSAL GAS TRANSMITTER Optional Flow Cell m Calibration Adaptor Required Calibration Equipment Calibration adaptor Gas compatible tubing Teflon recommended for acid gases HF HCI etc 500 cc min flow regulator Calibration gas Zero ai
54. used to adjust the span is an estimate based on the average response of several sensors CI an oxidizing gas may be used to span an HF sensor but it is recommended to bump test it by exposing the sensors briefly to vinegar vapors to be sure its ability to respond to the acidic HF gas has not been exhausted Using a gas generator STEP 1 Attach the delivery tube from the generator to a calibration adapter Use the delivery tube supplied by the manufacturer or a length of Teflon or Tygon clad Teflon Do not apply to sensor at this time STEP 2 Start the generator being sure the flow rate is set to 0 5 Ipm and the gas concentration is set to the desired value STEP 3 Allow the gas to flow through the delivery tube and calibration adapter to let them equilibrate with the gas before connecting to the Manual 087 0005H 04 2008 Series 4600 Gas PLUS GIT Universal Toxic Gas Transmitter sensor Depending on the local environment this may take 5 to 15 minutes or longer STEP 4 While waiting check the sensor zero reading and zero it if necessary STEP 5 After sufficient time has passed for the gas delivery tube and calibration adapter to equilibrate with the gas flowing through them attach the calibration adapter to the 4600 sensor end cap remove the rain shield first if there is one STEP 6 After five minutes adjust the span to agree with the concentration of gas coming after the generat
55. x 096 1955 Chlorine Dioxide CIO Ethylene Oxide ETO Model 15 8 Digit Prefix Suffix 096 2905 XXXX 10 0010 Fluorine F2 Model 62 8 Digit Prefix Suffix 096 1950 XXXX 3 PPM 0003 5 PPM 0005 10 PPM 0010 15 PPM 0015 25 PPM 0025 30 PPM 0030 50 PPM 0050 100 PPM 0100 Germane GeH Model 69 8 Digit Prefix Suffix 096 1957 XXXX Hydrogen H Low Humidity Model 87 8 Digit Prefix Suffix 096 1967 1 Hydrogen H High Humidity Model 52 8 Digit Prefix Suffix 096 2712 XXXX Hydrogen Chloride 1 Lo Humidity lt 50 Model 54 8 Digit Prefix Suffix 096 1947 Hydrogen Chloride 1 Hi Humidity gt 50 Model 71 8 Digit Prefix Suffix 096 1958 XXXX Hydrogen Cyanide HCN Model 64 8 Digit Prefix Suffix 096 1952 XXXX 25 0025 30 0030 50 0050 100 PPM 0100 Hydrogen Cyanide HCN Low RH Model 16 8 Digit Prefix Suffix 096 2871 XXXX Hydrogen Fluoride HF Model 63 8 Digit Prefix Suffix 096 1951 XXXX Hydrogen Fluoride HF Hi RH gt 75 Model 70 8 Digit Prefix Suffix 096 2185 Hydrogen Selenide H Se Model 89 8 Digit Prefix Suffix 096 1968 XXXX 1000

4600 Gas Plus - User Manual

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