Related Manuals for Envent 331S
Summary of Contents for Envent 331S
- Page 1 Envent Engineering Ltd. Hydrogen Sulfide Analyzer Model 330S & 331S Model 330SDS & 331SDS ANUAL Revision 2.4 Jan 2019...
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Page 3: Table Of Contents
Limitation of Warranty ................................2 Disclaimer ....................................3 Key Symbols ..................................... 3 Warnings & Cautions ................................3 Warning & Cautions for 330S & 331S H S Analyzers .................... 4 • Warning & Cautions for 330S Analyzer Only ......................5 •... - Page 4 Unpacking the Analyzer ............................23 • Standard spare parts for 330S H S analyzers: ..................... 23 • Standard spare parts for 331S H S analyzers: ..................... 24 • Installation procedure & Start-up ............................24 OPERATION & CONFIGURATION ............................26 Analyzer Display Interface ..............................26 CALIBRATION PROCEDURES ...............................
- Page 5 Figure 3. Space Requirements for the 330S & 331S H S Analyzers ................. 13 Figure 4. 331S Recommended Venting for 331S (Same for 330S model) ............... 15 Figure 5. AO 4-20 mA Output Wiring Options ......................17 Figure 6. Sample Chamber (Exploded View) ......................18 Figure 7.
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Page 6: Introduction
S Analyzer units. This manual is intended for all technical level users. Throughout this document will be referring to the models 330S and 331S. However, the information applies equally to the 330SDS and 3301SDS (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: China Office
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. Envent Engineering Ltd. -
Page 8: Disclaimer
This section covers all warnings and cautions for the 330S and 331S H S analyzers. They are divided into warnings and cautions applicable to both the 330S and 331S, only 330S, and only 331S H S analyzers. Please read and understand all statements as they are for your own safety when installing, operating and maintaining the analyzer(s). -
Page 9: Warning & Cautions For 330S & 331S H S Analyzers
If the equipment is used in a manner not specified by Envent Engineering Ltd, the protection provided by the equipment may be impaired. Do not use solvents, brake cleaners, soaps, detergents or rubbing alcohol to clean up analyzer or sample system. -
Page 10: Warning & Cautions For 330S Analyzer Only
• this cover can indicate the possibility that a failed primary seal condition could exist in the pressure switch). Warning & Cautions for 331S H S Analyzer Only Substitution of components may impair suitability for Class I, Division 2. The eductor is required with this model in order to maintain electrical safety and certification in division 2 areas. -
Page 11: Analyzer Specifications
Utilized when the analyzer needs to measure ranges above 100 ppm. A System permeable membrane dilution system Liquid Sampling Utilized when a liquid sample conditioning system is required to measure hydrogen sulfide in Liquids Envent Engineering Ltd. Page 6 Revision 2.4... -
Page 12: Table 1. 330S/331S H2S 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/331S H2S Analyzer Specifications Envent Engineering Ltd. Page 7 Revision 2.4... -
Page 13: Principle Of Operation
→ The electronics built into the models 330S and 331S 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 S sensing tape, the analyzer sensor reads 1000 mV (+/- 100 mV). -
Page 14: 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. Analyzers sold prior to Mid-August 2016 are set to have a 360 second analysis cycle. -
Page 15: Figure 2. H 2 S Analysis Cycle
"Concentration Calculation" stage (3) to (4). However, RRA values can be used as a trigger alarms setpoint in case the application requires a rapid response time (less than the RRA Analysis completion). Envent Engineering Ltd. Page 10 Revision 2.4... -
Page 16: Dual Sensor Analysis Cycle (Sds)
It is important to clarify that when the first sensor has finished its analysis cycle, even when it is waiting for the second sensor to complete its analysis cycle, it immediately updates any outputs associated with that sensor (Analog output 4-20 mA, alarms, display H2S value, etc.). Envent Engineering Ltd. Page 11 Revision 2.4... -
Page 17: Installation
S analyzers is 0 to 50 Degree Celsius. If the analyzer is installed in an area where temperatures go out of this range or it varies abruptly, Envent Engineering Ltd has options such as cabinets or shelters; consult Envent Engineering Ltd. -
Page 18: Space Requirements
Space Requirements Figure 3. Space Requirements for the 330S & 331S H S Analyzers Envent Engineering Ltd. Page 13 Revision 2.4... -
Page 19: Sample Point Selection
H S sensing tape is located. Sample Point Selection The sample to the 330S/331S 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 20: Sample Volume & Flow Rate
Figure 4. 331S Recommended Venting for 331S (Same for 330S model) Sample Volume & Flow Rate The sample should be supplied to the 330S/331S H S analyzer at 10-15 psig and at a flow of 83.63 cc/min (set flowmeter at 2.0). A bypass sweep is recommended to... -
Page 21: Installation Of Analyzer Components
(PLC) is required for the analog to output. Figure 5 shows the different wiring set ups for the analog outputs. The third wiring option shown in Figure 5 uses Envent's powered AO board(s) to provide self-powered analog outputs. These boards are available at Envent Engineering Ltd. -
Page 22: Figure 5. Ao 4-20 Ma Output Wiring Options
Figure 5. AO 4-20 mA Output Wiring Options Envent Engineering Ltd. Page 17 Revision 2.4... -
Page 23: Sample Chamber
Figure 6. The window keeps a clear view for the LED and the photodiode to work properly and isolates them from the sample gas. The rubber gasket seals the Sample Chamber compartment preventing any leaks. Envent Engineering Ltd. Page 18 Revision 2.4... -
Page 24: Aperture Strip
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 25: Figure 7. Envent's Humidifier Unit For 330S & 331S
S sensing tape; refer to Figure 7 . Figure 7. Envent's Humidifier Unit for 330S & 331S The humidifier works by using Nafion Tubing. This material has the capability to transports water vapor from the most humidified medium to the driest medium. The sample gas traveling inside the Nafion tube is dryer than the outside of the tube which is being saturated with water, thus, humidifying the gas sample. -
Page 26: Eductor Block
The analyzer should be mounted in an area in which it is not exposed to vibration, excessive pressure, temperature and/or environmental variations. Figure 8 shows know how to install the humidifier unit in a model 331S H S analyzer. Same principle applies for the model 330S H S analyzer. -
Page 27: Receiving The Analyzer
Receiving the Analyzer Inspect the packaging for external damage right after is received. If there is any physical damage, please contact Envent Engineering Ltd and request that the carrier's agent be present when the analyzer is unpacked. If a disagreement arises the incoterms agreed by the seller and the customer will overrule any dispute. -
Page 28: Unpacking The Analyzer
5. Funnel 6. 330S 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) Envent Engineering Ltd. Page 23 Revision 2.4... -
Page 29: Standard Spare Parts For 331S H S Analyzers
S Sensing Tape. Part No. 330133XS 4. 1 Liter Analyzer Fluid. Part No. 330129 5. Funnel 6. 331S Serial Comm. External Cable (USB to Mini USB). Part No. 600002 7. Humidifier (uninstalled). Part No. 330061 (Part No. 330061D for SDS) Installation procedure & Start-up The following steps should be followed for proper installation and start-up of the analyzer. - Page 30 16. Allow twenty minutes for the analyzer to stabilize. The analyzer calibration can be verified if calibration gas is available. If no calibration gas is available, the analyzer may be operated using the factory calibration settings until calibration gas is available. Envent Engineering Ltd. Page 25 Revision 2.4...
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Page 31: Operation & Configuration
The display is made up of a Graphic Display, four (4) push-buttons and (8) LED's. Refer to Figure 10. Figure 10. 330S Display (left) & 331S Display (right) The Descriptions and Function of the display buttons and LED's are described in table Table 4 &... -
Page 32: Table 5. Display Led Description/Function
By default, H alarm activates LED-1 and HH alarm activates LED-2. (Refer to the LED Sticker on the analyzer door on the inside (331S) or to the right side of the blue chassis on of the XP enclosure). Table 5. Display LED Description/Function Envent Engineering Ltd. -
Page 33: Calibration Procedures
CALIBRATION PROCEDURES S Gas Calibration Depending on the application, the 330S/331S 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 34: Re-Zero Sensor Procedure
• Value should be 1000mV (+100mV) Put on sensor cover. 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 29 Revision 2.4... - Page 35 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 30 Revision 2.4...
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Page 36: 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 11. 331S & 331SDS Sensing Tape Change Procedure (Same as the 330S & 330SDS models) Envent Engineering Ltd. Page 31 Revision 2.4... -
Page 37: Sample Conditioning System Cleaning Procedure
Sample Conditioning System Cleaning Procedure During start-up or plant upset situations, the 330S/331S H S 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 38 5. Once sample conditioning system has been re-assembled, apply calibration gas to the analyzer. Refer to "H S Gas Calibration" on page 28. Envent Engineering Ltd. Page 33 Revision 2.4...
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Page 39: Troubleshooting
S Sensing tape for a few seconds. Re-zero sensor block if necessary. Refer to "Re-zero Sensor procedure" on page 29. Regulator not maintaining 15 Replace Regulator, Consult Envent psig (Changing flow rate to Engineering Ltd. analyzer) Continued on next page Envent Engineering Ltd. - Page 40 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 32.
- Page 41 (follow all safety procedures to bleed out all high H2S 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 42 Make sure the humidifier unit is placed and installed correctly. Please refer to "Humidifier Unit" on page 19. 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"...
- Page 43 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 44 H2S 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 H2S Sensing tape. Refer to "H (Sensor Low) H2S sensing tape because Sensing Tape Change Procedure"...
- Page 45 If the alarm does not clear once a new H2S failure sensing tape is installed, the low H2S sensing tape sensor or its wires have failed and need to be replaced. Consult Envent Engineering Ltd to order a replacement. Low H2S sensing Tape Sensor Part #: 330046A...
- Page 46 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 47 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 48 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 49: Appendices
Box of 10 Micro Filter Glass Fiber Element 12/19-57-50CSK 330423 13'' 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 44 Revision 2.4... -
Page 50: Chico A Sealing Compound: For Sealing Fittings In Hazardous Locations
Chico A Sealing Compound: For sealing fittings in Hazardous Locations Envent Engineering Ltd. Page 45 Revision 2.4... -
Page 51: Safety Data Sheet For H S Sensing Tape
Safety Data Sheet for H S Sensing Tape Envent Engineering Ltd. Page 46 Revision 2.4... - Page 52 Envent Engineering Ltd. Page 47 Revision 2.4...
- Page 53 Envent Engineering Ltd. Page 48 Revision 2.4...
- Page 54 Envent Engineering Ltd. Page 49 Revision 2.4...
- Page 55 Envent Engineering Ltd. Page 50 Revision 2.4...
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Page 56: Risk Assessment - Safety Information
700 ppm and > Immediate loss of consciousness above > Permanent brain damage and death in a few minutes even if removed to fresh air at once Table 7. Hydrogen Sulfide Quantities & Health Effects Envent Engineering Ltd. Page 51 Revision 2.4... - Page 57 H2S monitor, wear a hard hat, hearing protection (if applicable), safety glasses, hand protection, steel toed boots. Depending on the location of the H2S analyzer, appropriate breathing device Envent Engineering Ltd. Page 52 Revision 2.4...
- Page 58 (if applicable), safety glasses, hand protection, steel toed boots. Depending on the location of the H2S analyzer, appropriate breathing device might be required such as SCBA (Self-contained Breathing Envent Engineering Ltd. Page 53 Revision 2.4...
- Page 59 Electrostatic Hazard – Backpan hazard - Explosion health risk. and Certification nameplate must hazard be cleaned only with a damp cloth to prevent static charging hazard which could result in an explosion Table 8. Risk Assessment Envent Engineering Ltd. Page 54 Revision 2.4...
- Page 60 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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