Related Manuals for Envent 330S-Ex
Summary of Contents for Envent 330S-Ex
- Page 1 Envent Engineering Ltd. Hydrogen Sulfide Analyzer Model 330S-Ex Model 330SDS-Ex User's Manual Revision 1 21 Jan 2022...
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Page 3: Table Of Contents
Limitation of Warranty ........................2 Disclaimer ............................2 Key Symbols ............................3 Warnings & Cautions .......................... 3 Warning & Cautions for 330S-Ex & 330SDS-Ex H S Analyzers ............3 Analyzer Specifications ........................6 PRINCIPLE OF OPERATION ........................ 7 Physical Reaction ..........................7 Analysis Cycles .......................... - Page 4 S Gas Calibration ......................... 32 Re-zero Sensor Procedure ....................... 33 MAINTENANCE ..........................35 S Sensing Tape Change Procedure ..................... 35 Sample Conditioning System Cleaning Procedure ................36 Material List ..........................36 Procedure ............................. 36 TROUBLESHOOTING ........................38 APPENDICES ............................. 48 Recommended Spare Parts List .......................
- Page 5 Figure 7. Space Requirements for 330SDS-Ex with Standard Backpan (Size may vary) ..... 18 Figure 8. Space Requirements for 330S-Ex with Total Sulfur Option (Backpan size may vary) .... 19 Figure 9. Space Requirements for 330SDS-Ex with Total Sulfur Option (Backpan size may vary) ..20 Figure 10.
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Page 6: Introduction
Throughout this document will be referring to the models 330S-Ex. However, the information applies equally to the 330SDS-Ex (Dual sensor), unless otherwise stated. To clarify, the difference between an "S" model and a "SDS" model analyzer is the second sensor the "SDS"... -
Page 7: Warranty & Liability Statements
Extended warranty may be available with certified start-up. Contact Envent Engineering Ltd for details. Envent Engineering Ltd reserves the right to change the product design and specifications at any time without prior notice. Disclaimer No other warranty is expressed or implied. -
Page 8: Key Symbols
Envent Engineering Ltd is not resposable for the proper disposal of the H sensing tape which contains lead acetate. It is the responsibility of the end user to properly dispose the tape according to their local or national regulations. Envent... - Page 9 The user is solely responsible for the product selection, safety and warning requirements for the application. If the equipment is used in a manner not specified by Envent Engineering Ltd, the protection provided by the equipment may be impaired.
- Page 10 (flow from this cover can indicate the possibility that a failed primary seal condition could exist in the pressure switch). If the 330S-Ex or the 330SDS-Ex has a total sulfur enclosure, ensure its caps are engaged to a minimum of 12 threads.
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Page 11: Analyzer Specifications
Utilized when more than two analog outputs are required Board Ethernet Port Utilized for TCP/IP communication capabilities Auto Calibration Utilized to initiate a calibration based on time of day or manually Table 1. 330S-Ex 330SDS-Ex H2S Analyzer Specifications Envent Engineering Ltd. Page 6 Revision 1... -
Page 12: Principle Of Operation
→ COOH The electronics built into the models 330S-Ex and 330SDS-Ex have been programmed to measure the rate of darkening over time which, in turn, gives the hydrogen sulfide concentration level. When no H S is in contact with the H sensing tape, the analyzer sensor reads 1000 mV (+/- 100 mV). -
Page 13: Analysis Cycles
An analysis Cycle lasts up to a maximum of 720 seconds (12 minutes). Do not change the Maximum Analysis Time, consult Envent Engineering Ltd. Once an analysis cycle is complete, the motor moves the H S sensing tape giving the sensor block new tape surface area to start the analysis again. -
Page 14: Figure 2. H 2 S Analysis Cycle
(4) "Concentration Calculation" starts. On this stage, the H S slope is optimal for calculating the final H S value for that Cycle. Algorithms are used by the controller board to calculate as accurately as Envent Engineering Ltd. Page 9 Revision 1... -
Page 15: Dual Sensor Analysis Cycle (Sds)
(Analog output 4- 20 mA, alarms, display H2S value, etc.). Envent Engineering Ltd. Page 10 Revision 1... -
Page 16: Installation
4. 1 Liter Analyzer Fluid. Part No. 330129 5. Funnel 6. 330S-Ex Serial Comm. External Cable (USB to Mini USB). Part No. 600002 7. Humidifier (uninstalled). Part No. 330061 (Part No. 330061D for SDS) 8. Bolts For explosion proof enclosure (x22) 9. -
Page 17: Installation Procedure & Start-Up
The pressure regulator is completely closed when the knob handle is counterclockwise. 14. Turn on the sample gas flow to the conditioning sample system and then open the sample inlet valve. Envent Engineering Ltd. Page 12 Revision 1... -
Page 18: Installation Requirements
Make sure the analyzer meets the requirements for the installation site. These analyzers are to be installed in Zone 1 areas. The 330S-Ex and 330SDS-Ex H S analyzer should be mounted in an area in which it is not exposed to vibration, excessive pressure, temperature and/or environmental variations. -
Page 19: Earth Connections, Entry Specifications & Space Requirements
Earth Connections, Entry Specifications & Space Requirements Figure 3. Enclosure Entries & Earth Connections Envent Engineering Ltd. Page 14 Revision 1... -
Page 20: Figure 4. Space Requirements & Entry Specifications For Model 330S-Ex (No Backpan)
Figure 4. Space Requirements & Entry Specifications for Model 330S-Ex (No Backpan) Envent Engineering Ltd. Page 15 Revision 1... -
Page 21: Figure 5. Space Requirements & Entry Specifications For Model 330Sds-Ex (No Backpan)
Figure 5. Space Requirements & Entry Specifications for Model 330SDS-Ex (No Backpan) Envent Engineering Ltd. Page 16 Revision 1... -
Page 22: Figure 6. Space Requirements For 330S-Ex With Standard Backpan (Size May Vary)
Figure 6. Space Requirements for 330S-Ex with Standard Backpan (Size may vary) Envent Engineering Ltd. Page 17 Revision 1... -
Page 23: Figure 7. Space Requirements For 330Sds-Ex With Standard Backpan (Size May Vary)
Figure 7. Space Requirements for 330SDS-Ex with Standard Backpan (Size may vary) Envent Engineering Ltd. Page 18 Revision 1... -
Page 24: Figure 8. Space Requirements For 330S-Ex With Total Sulfur Option (Backpan Size May Vary)
Figure 8. Space Requirements for 330S-Ex with Total Sulfur Option (Backpan size may vary) Envent Engineering Ltd. Page 19 Revision 1... -
Page 25: Figure 9. Space Requirements For 330Sds-Ex With Total Sulfur Option (Backpan Size May Vary)
Figure 9. Space Requirements for 330SDS-Ex with Total Sulfur Option (Backpan size may vary) Envent Engineering Ltd. Page 20 Revision 1... -
Page 26: Sample Point Selection
H S sensing tape is located. Sample Point Selection The sample to the 330S-Ex and 330SDS-Ex H S analyzer must be representative of the process stream and should be taken from a point as close as possible to the analyzer to avoid lag times and sample degradation in the tubing. -
Page 27: Sample Volume & Flow Rate
Figure 10. Recommended Venting for 330S-Ex (Same as the 330SDS-Ex H S Analyzer) Sample Volume & Flow Rate The sample should be supplied to the 330S-Ex and 330SDS-Ex H S analyzer at 10-15 psig and at a flow between 100-200 cc/min (set flowmeter at 2.0). A bypass sweep is recommended to reduce sample lag time in the sample line if it is at high pressure or it is longer than 15 feet (4.6 m) (The Standard H... -
Page 28: Installation Of Analyzer Components
(PLC) is required for the analog to output. Figure 11 shows the different wiring set ups for the analog outputs. The third wiring option shown in Figure 11 uses Envent's powered AO board(s) to provide self-powered analog outputs. These boards are available at Envent Engineering Ltd. -
Page 29: Sample Chamber
The sample chamber is the component that allows the H S sample to come in contact to the H S sensing tape which in turn is read by the sensor block. The sample chamber is made of the following components: Envent Engineering Ltd. Page 24 Revision 1... -
Page 30: Figure 12. Sample Chamber (Exploded View)
Various sizes of apertures match different measurement ranges. Table 3 shows the aperture size according to its range. Envent Engineering Ltd. Page 25 Revision 1... -
Page 31: Humidifier Unit
Aperture strips can be changed to accommodate for a different range application. Refer to the table shown above to select the best option on the new concentration application. Contact Envent Engineering Ltd to purchase an aperture strip. Remember: gain and span values on analog outputs will have to change based on new range application. -
Page 32: Figure 13. Envent's Humidifier Unit For 330S-Ex & 330Sds
The analyzer should be mounted in an area in which it is not exposed to vibration, excessive pressure, temperature and/or environmental variations. Figure 14 shows know how to install the humidifier unit in a model 330S-Ex H analyzer. Same principle applies for the model 330SDS-Ex H S analyzer. -
Page 33: Eductor Block
Figure 14. Humidifier Unit Installed in a 330S-Ex H S Analyzer Eductor Block The analyzer reading can be affected by positive or negative pressure on the sample vent line. This can be caused by strong winds blowing across or directly into the vent;... - Page 34 15 psig pressure being expelled through the restricted fitting creating suction from the gas vent line (Venturi Effect). DO NOT block the opening at the bottom of the eductor or the modified elbow fitting. Envent Engineering Ltd. Page 29 Revision 1...
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Page 35: Operation & Configuration
The display is made up of a Graphic Display, four (4) pushbuttons and (8) LED's. Refer to Figure 16. Figure 16. 330S-Ex or 330SDS-Ex Display The Descriptions and Function of the display buttons and LED's are described in table Table 4 &... -
Page 36: Table 5. Display Led Description/Function
By default, H alarm activates LED-1 and HH alarm activates LED-2. (Refer to the LED Sticker to the right side of the blue chassis on the XP enclosure). Table 5. Display LED Description/Function Envent Engineering Ltd. Page 31 Revision 1... -
Page 37: Calibration Procedures
CALIBRATION PROCEDURES S Gas Calibration Depending on the application, the 330S-Ex and 330SDS-Ex H S analyzer will require more or fewer periodic calibrations. There is no specific time as to how often the H S analyzer should be calibrated. It will depend on the application, importance of accuracy for the application, and how dirty or clean the environment and sample are. -
Page 38: Re-Zero Sensor Procedure
Value should be 1000mV (+100mV) Put on sensor cover. 9. Turn on sample gas flow using sample inlet valve. 10. Set the gas pressure to 15 psig and the flow meter to 2.0. Envent Engineering Ltd. Page 33 Revision 1... - Page 39 11. Confirm the analyzer reads below the H S alarm set points. 12. Remove the analyzer from bypass mode by pressing the bypass button. Verify the "Bypass" LED turns off. Alarms are armed after removing the bypass mode. Envent Engineering Ltd. Page 34 Revision 1...
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Page 40: Maintenance
Check the sample conditioning filter(s) every time the H S sensing tape is replaced. Replace the filter(s) as required. S Sensing Tape Change Procedure Figure 17. 330S-Ex & 33SDS-Ex H S Sensing Tape Change Procedure Envent Engineering Ltd. Page 35... -
Page 41: Sample Conditioning System Cleaning Procedure
Sample Conditioning System Cleaning Procedure During start-up or plant upset situations, the 330S-Ex/330SDS-Ex H2S analyzer may become contaminated with amine or hydrogen sulfide scavenger solution. This may cause the analyzer to read low (this can be determined at calibration). If the analyzer reads low, it will require incremental increases in the gain to maintain calibration. - Page 42 5. Once sample conditioning system has been re-assembled, apply calibration gas to the analyzer. Refer to "H S Gas Calibration" on page Envent Engineering Ltd. Page 37 Revision 1...
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Page 43: Troubleshooting
S Sensing tape for a few seconds. Re-zero sensor block if necessary. Refer to "Re-zero Sensor procedure" on page 33. Regulator not maintaining 15 Replace Regulator, Consult Envent psig (Changing flow rate to Engineering Ltd. analyzer) Continued on next page Envent Engineering Ltd. - Page 44 Possible Reasons Possible Solutions Contaminants in sample Clean sample chamber, aperture and chamber window; replace if required. Contact Envent Engineering Ltd for replacement assistance. Contaminants or liquid carry If contaminants or liquid has carried over over in sample conditioning the sample system, refer to page 36.
- Page 45 (follow all safety procedures to bleed out all high H S level concentrations) and re-connect the tubing to the fittings on canister lid. Contact Envent engineering Ltd for replacement if required. Total Sulfur's Hydrogen flow The flow of hydrogen being mixed with was decreased at the flow sample gas has been decreased.
- Page 46 Please refer to " Humidifier Unit" on page 26. Humidifier Leaking: it needs to either be repaired or replaced. Consult Envent Engineering Ltd. Sensor/ sensor wire failure Re-zero the sensor block. Refer to "Re-zero Sensor Procedure" on page 33.
- Page 47 Possible heat trace required. Contaminants in sample Clean sample chamber. Replace aperture chamber and window if required. Contact Envent Engineering Ltd for replacement and assistance. H2S Sample inlet constantly If the H2S sample inlet is greater than the...
- Page 48 S Sensing tape for a few seconds. The alarm should clear. Faulty Sensor Sensor needs to be replaced. Contact Envent Engineering Ltd for replacement. Fault LED Sensor did not zero on white Re-install H S Sensing tape. Refer to "H...
- Page 49 If the alarm does not clear once a new H failure sensing tape is installed, the low H sensing tape sensor or its wires have failed and need to be replaced. Consult Envent Engineering Ltd to order a replacement. Low H S sensing Tape Sensor Part #:...
- Page 50 Blown fuse Check fuse in the controller board. Replace turning ON if required. Controller board Malfunction Consult Envent Engineering Ltd for a controller board replacement. Not using the appropriate Make sure to use the appropriate voltage to voltage rating power the analyzer. DC controller boards...
- Page 51 If more than one time occurrence: Sample conditioning system may need a system for wet/dirty sample gas (extra filters set as coalescing, add liquid float stops, etc.). Consult Envent Engineering Ltd. Regulator not Problems with the Regulator Replace Regulator, Consult Envent...
- Page 52 Humidifier The humidifier body cracked - A replacement may be required. Consult leaking liquid Could be due to extreme Envent Engineering Ltd for a replacement. temperature changes. Calibration Issues Problems Possible Reasons Possible Solutions Change gain...
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Page 53: Appendices
12/19-57-50CSK 330423 13'' (33.02 cm) Chubby Quartz Tube (Total Sulfur option only) 3300429 TS Ceramic Heater (Total Sulfur option only) 330431 Kalrez O-rings (Total Sulfur option only) 330900 Tubing, Cleaner, Fittings Maintenance Kit Envent Engineering Ltd. Page 48 Revision 1... -
Page 54: Sealing Compound: For Sealing Fittings In Hazardous Locations
Sealing Compound: For sealing fittings in Hazardous Locations Envent Engineering Ltd. Page 49 Revision 1... - Page 55 Envent Engineering Ltd. Page 50 Revision 1...
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Page 66: Safety Data Sheet For H S Sensing Tape
Safety Data Sheet for H S Sensing Tape Envent Engineering Ltd. Page 61 Revision 1... - Page 67 Envent Engineering Ltd. Page 62 Revision 1...
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- Page 71 For further information, or a copy of our most recent operating manual, please visit us at www.envent- eng.com. Envent Engineering Ltd reserves the right to change product design and specifications at any time without prior notice Envent Engineering Ltd.
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