Catalog Number 8544 Sigma 900 Composite Sampler INSTRUMENT MANUAL © Hach Company, 2003. All rights reserved. Printed in the U.S.A.
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Table of Contents Section 1 Specifications..................................................................................................................................... 5 Section 2 General Information .......................................................................................................................... 7 2.1 Instrument Description ........................................................................................................................................ 7 2.
Table of Contents Section 5 Maintenance ..................................................................................................................................... 33 5.1 Cleaning the Sampler ....................................................................................................................................... 33 5.1.1 Cleaning the Sampler Housing................................................................................................................ 33 5.1.
Section 1 Specifications Specifications are subject to change without notice. Controller Dimensions Height: 34 cm (13.5 in.), Width 28 cm (11 in.), Depth 20.3 cm (8 in.) without wall bracket, 33 cm (13 in.) deep with wall bracket Pump/Controller Housing High impact injection molded ABS: submersible, watertight, dust tight, corrosion and ice resistant; NEMA 4X, 6 Sample Pump High speed peristaltic, dual roller, with 9.53 ID x 15.9 mm OD (3/8 in. x 5/8 in.) medical grade silicone rubber pump tube.
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Section 2 General Information 2.1 Instrument Description The instrument is designed to automatically collect and preserve samples from a liquid source. The sampler is suitable for collection of conventional and toxic pollutants and suspended solids. The sampler collects samples on either a timed cycle basis, or in proportion to flow when used in conjunction with a flow meter (flow meter connected to the auxiliary connector).
Section 2 Figure 1 Interface Connectors 1 2 1. 12 V dc 2. Auxiliary 2.3 Front Panel The front panel consists of the keypad, liquid crystal display, and the internal case humidity indicator (Figure 2). 2.3.1 Keypad and Display The sampler controller is equipped with a 24 character alphanumeric liquid crystal display which automatically steps the user through the program settings. 2.3.2 Humidity Indicator The internal case humidity indicator (Cat. No.
Section 2 Figure 2 900 Composite Sampler 1 2 7 6 3 4 5 1. Function Key 5. Power On Indicator LED 2. Peristaltic Pump 6. Desiccant Indicator 3. Peristaltic Pump Tubing 7. 24-character Alphanumeric Liquid Crystal Display 4. Tubing Clamp 2.4 Safety Information Please read this entire manual before unpacking, setting up, or operating this instrument. Pay particular attention to all danger and caution statements.
Section 2 2.4.1 Use of Hazard Information If multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the greatest hazard. DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury. NOTE Information that requires special emphasis. 2.4.
Section 2 DANGER Bien que certains produits Hach soient conçus et certifiés pour être installés dans des endroits dangereux tels que définis par le National Electric Code, de nombreux produits Hach ne conviennent pas pour de tels endroits. Il relève de la responsabilité des personnes qui placent les produits dans des endroits dangereux de déterminer s'ils sont adaptés à cet environnement.
Section 2 2.4.5 Definition of Confined Space A Confined Space is any location or enclosure that presents or has the immediate potential to present one or more of the following conditions: • An atmosphere with less than 19.5% or greater than 23.
Section 3 Installation DANGER Only qualified personnel should conduct the installation tasks described in this section of the manual 3.1 Unpacking the Instrument Remove the sampler from the shipping carton and inspect it for any damage. Contact Hach Customer Service at 1-800-227-4224 if any items are missing or damaged. 3.2 Selecting the Installation Site The sampler is completely self-contained and may be located indoors or outdoors without protection, between 0 to 50 °C (32 to 120 °F).
Section 3 Figure 4 Wall Mount Bracket 3.3 Mounting the Sampler Attach the wall mount bracket to a stable panel or wall (Figure 4). Mount the bracket so the sample display and keypad are easily accessible. Mount the sampler to the wall bracket using the four screws provided. 3.4 Attaching the Intake Line 3.4.1 Vinyl Intake Tubing 1. Push one end of the clear flexible PVC (vinyl) tube to the tapered end of the intake strainer, until the tube is within 0.635 cm (¼ in.
Section 3 4. Slide the tubing clamp over the silicone tubing until it is over the stainless steel fitting on the liquid sensor. Tighten to secure. 5. Repeat the procedure for the intake strainer. 3.5 Setting Up the Intake Line and Strainer For each sampling location, the intake line should be as short as practical, and be free of any sharp bends, coils, or loops.
Section 3 Figure 5 Full Bottle Shut-off 1 2 1. Sample Tubing 2. Full Bottle Shut-off 3.8 Power Connections The sampler controller operated on 12 V dc which is supplied by an optional ac/dc power converter and/or battery. Note: Make sure both rubber holddowns are attached to the clips at each end of the power supply. The power supply (or battery) is placed in the compartment located directly behind the controller.
Section 3 • Before performing any maintenance, disconnect the sampler from the power source. • Do not attempt to make any connection or otherwise handle the electrical components of the sampler when connected to ac line power if the immediate area is wet, or if hands or clothing are wet. • If the circuit breaker or fuse in the ac power source is tripped, determine the cause before restoring power to the sampler.
Section 3 Table 2 Auxiliary Pin Assignments Pin Signal Description Wire Color Purpose Rating D Liquid Level Actuator/Auxiliary Control Input Black This line is held at 5 V dc inside the sampler. When shorted to ground (Pin B), a signal is sent to the microprocessor inside the sampler causing it to “wake up” and begin or resume the sampling program.
Section 3 Figure 6 4–20 mA Interface and Pulse Duration Input (+) To Auxillary Connector (-) For details on programming the sampler for flow proportional operation, refer to SECTION. Splitter Interface This splitter interface (Cat. No. 939) can be used if access to more than one of the Auxiliary Receptacle functions is required simultaneously. Connecting the interface to the 6-pin connector on the sampler provides three additional connectors for use.
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Section 4 Operation 4.1 Keypad and Key Functions Figure 8 shows the 18-position keypad and 24-character alphanumeric display. Button Function ON Energizes Sampler OFF De-energizes sampler and halts program in progress START PROGRAM NEW PROGRAM YES/ENTER NO/PASS CLEAR ENTRY DISPLAY FEEDBACK CHANGE/HALT RESUME PROGRAM BOTTLE ADVANCE Initiates the sampling program and resets all counts to zero (including datalogger).
Section 4 Figure 8 Front Panel 4.2 Tips and Techniques for Programming the Instrument • The instrument beeps each time a key is pressed. • After the ON button is presses, the display will show one of the following messages: "Program Halted", "Program Running", "Program Complete", or "Ready to Start". • The program status changes to Program Complete when sampling is complete and there are no samples to be taken or the optional full bottle shut-off is actuated.
Section 4 4.3 Setting the Time and Date Before programming the sampler for the first time, check the real time clock and date settings. Note: When setting the time and date, the * key causes the display to back up to the previously flashing character. 1. Check the real-time clock and date settings by pressing TIME/READ. The display will show the time and date for several seconds: 10:35 AM 24OCT00 2. If the time or date are not correct, press TIME/SET.
Section 4 4.5 Explanations of Program Messages Item Number Message 1 READY TO START 2 PROGRAM HALTED 3 PROGRAM RUNNING 4 PROGRAM COMPLETE This message is displayed after program completion. To repeat the program, press START PROGRAM. Press NEW PROGRAM to enter a different program. 5 RE-ENTER PROGRAM, DEPRESS * When the sampler is on, this message will appear if the sampler was turned off during program entry. 6 PROGRAM DELAY This is the first message in the programming sequence.
Section 4 Item Number Message 13c TRY AGAIN? 14 ENTER ID# 15 SETUP COMPLETE, READY TO START Description of Message If STOP PUMP was pressed before or after the desired rinse time, press YES to initiate another rinse cycle. Press NO to view item 16. Enter an optional identification number if desired. This message indicates that all programming steps have been completed. Press START to begin. The display will read "Program Running". To review the program operating status, press DISPLAY FEEDBACK.
Section 4 5. To exit the manual mode, press CLEAR ENTRY. This returns the sampler to the standby state. While the sampler is in standby, a sample cycle can be initiated by pressing the TAKE SAMPLE key. 4.8 Measurements Triggered by Liquid Levels or Flow The sampler can operate in any one of three control modes, using an external controlling device (i.e. Liquid Level Actuator, Cat. No. 943, or an external flow meter).
Section 4 4.9 Programming the Sampler for Level Control Put the sampler in a standby state (i.e. "Program Halted", "Ready To Start" or "Program Complete") hold CLEAR ENTRY for two seconds. This will cause the display to read "Level Control?". The following messages may be displayed in the level control program: Item Number Message 1 LEVEL CONTROL 2 LEVEL START? If you press YES, the sampler operates as described in Mode 1. If you press NO, the display shows item number 4.
Section 4 4.11 Flow Proportional Operation 4.11.1 How to Calculate Pulses/Counts 4.11.1.1 Flow Proportional Sampling Intervals—Using External Pulses The sampler is equipped to receive either a momentary dry contact closure or a +5 to +12 V dc pulse from a flow meter, where each pulse represents a known flow increment.
Section 4 1. Determine the flow increment between samples: gallons- = 3,542 gallons/sample f = Q ---- = 85,000 -------------------------------------n 24 samples 2. Multiply the flow increment, f, by the pulse frequency output of the flow meter. 1 pulse 3,542 gallons/sample × --------------------------- = 70.84 pulse/sample 50 gallons Therefore, the value for INTV = _ _ _ _ CNTS is 71. Example 3 You want to collect 48 samples over a 16-hour period.
Section 4 Use the following examples to help you determine the value that you need to enter when programming for sampling based on counts. Example 1 You want to collect 24 samples over a 24-hour period on a 4–20 mA flow proportional basis. Average Flow Rate = 3.5 mgd (average flow rate over the 24-hour period) Maximum Flow Rate = 10 mgd a = 1440 minutes 1. Calculate Q. Average Flow Rate- = 3.5 mgd- = 0.
Section 4 2. Calculate t. 1440 min - = 15 min/sample t = a --- = -----------------------------n 96 samples 3. Multiply Q x t. 0.26 mgd × 15 min/sample = 3.9 Therefore, the value entered for INTV = _ _ _ _ CNTS is 4. Example 4 You want to collect 32 samples over an 8-hour period. Average Flow Rate = 70 gpm (average flow rate over the 8-hour period) Maximum Flow Rate = 210 gpm a = 480 minutes 1. Calculate Q. Average Flow Rate- = ---------------------70 gpm- = 0.
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Section 5 Maintenance DANGER Only qualified personnel should conduct the installation tasks described in this section of the manual 5.1 Cleaning the Sampler 5.1.1 Cleaning the Sampler Housing The interior and exterior sampler housing may be cleaned with a damp sponge and mild detergent. Do not use abrasive cleaners. 5.1.2 Cleaning the Sample Bottles Clean the bottles using a brush and water with mild detergent, followed by a fresh water rinse and a diluted water rinse.
Section 5 4. Place the controller, face down, on a cloth-covered workbench to prevent scratching the front panel. 5. Inside the Center Section, remove the four screws that fasten the Controller. 6. Lift the Center Section off the controller. 7. Remove the 17 screws from around the perimeter of the controller back panel. 8. Carefully pull open the bottom panel and let the attached connectors swing out of the way. 9. If necessary for the repair being performed, unplug the appropriate connectors.
Section 5 5.8 Internal Desiccant Module The Internal Desiccant Module (Cat. No. 787) consists of a moisture-absorbent material inside a poly bag. If the humidity indicator on the front panel turns pink, replace the module and the back panel perimeter gasket. The desiccant module is located under the CPU board. Note: The desiccant module cannot be recharged by heating. Do not attempt to bake the desiccant module in an oven to remove the moisture as this could be a fire hazard. 5.
Section 5 1. Desiccant module slides under circuit board 6. J5 Distributor/Full Bottle Shut-off 2. J8 LCD Display 7. J2 12 V dc 3. J6 Auxiliary 8. J3 Fuse 4. J1 Liquid Sensor 9. J4 Motor 5. Lithium Memory Battery 10. J9 Keypad 5.10 Motor/Gear Box The motor/gear box requires no regular maintenance. The special formulation gears are self lubricating and require no oil or grease. 5.
Section 6 Contact Information for U.S.A. & Outside Europe Ordering Information for the U.S.A. By Telephone: (800) 635-4567 By Mail: Hach Company P.O. Box 389 Loveland, Colorado 80539-0389 U.S.A By Fax: (970) 461-3915 Ordering information by E-mail: orders@hach.
Section 7 Contact Information for Europe For technical support, repair service, and ordering information please refer to the contact information below for your specific country. For additional information, visit www.hach-lange.com. Austria Dr. Bruno Lange Ges. MBH Industriestraße 12 A - 3200 Obergrafendorf Tel. +43 (0)27 47 74 12 Fax +43 (0)27 47 42 18 info@hach-lange.at Italy Dr. Bruno Lange s.r.I. Via Riccione, 14 I-20156 Milano Tel. +39 02 39 23 14-1 Fax +33 02 39 23 14-39 info@hach-lange.
Section 8 Limited Warranty Hach Company warrants its products to the original purchaser against any defects that are due to faulty material or workmanship for a period of *one year* from date of shipment unless otherwise noted in the product manual. The sc100 Controller is warranted for two years from the date of shipment.
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Section 9 Parts and Accessories Description Part Number 3-way Splitter Assembly ........................................................................................................................................ 939 4–20 mA Interface, 10 ft Cable............................................................................................................................ 2021 900 Series Peristaltic Pump Tubing, 15 ft .....................................................................................
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Appendix A Programming Flow Chart Program Flow Chart Ready to Start Program Halted Program Complete Bottle Setup - Press \ Press NEW PROGRAM key to start here Enter units for bottle volume (ML or Gal) Enter bottle volume (in specified units) If previously entered parameters are desired for another (new) program, it is not necessary to re-enter the parameters.
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Appendix B Batteries and Chargers Lead-Acid (Gel Cell) Batteries Lead-acid batteries are designed to prevent electrolyte leakage from the terminals or case. The electrolyte is suspended in a gel, which ensures safe, efficient operation in any position. Gel cells are classified as “Non-Spillable” and meet all requirements of the International Air Transport Association. Maintenance These lead-acid batteries are maintenance-free.
Appendix B Table 3 Lead-Acid Battery Storage Recommendations Storage Temperature Maximum Recommended Storage Time 0 to 20 °C 12 months 21 to 30 °C 9 months 31 to 40 °C 5 months 41 to 50 °C 2.5 months Nickel-Cadmium Batteries Nickel-cadmium batteries provide superior power capabilities when used at low temperatures. They also perform a higher number of charge/discharge cycles than lead-acid batteries. Maintenance Nickel-cadmium cells are of a sealed construction.
Appendix C Exploded View Drawings Exploded View (1 of 6) 1 2 3 6 4-5 Item Number Description QTY Part Number 1 Pump Assembly 1 1075 2 Overlay 1 906 3 Pump Tube Insert 1 2441 4 Hex Nut 4 SE 403 5 Threadlock 4 SE 957 6 Flat Washer 4 SE 400 8544apdx_engdraw.
Appendix C Exploded View (2 of 6) 1 2 3 4 5 6 Item Number Description QTY Part Number 1 Latch 1 2279 2 Keypad Cable Assembly 1 8586 3 Screw 6 SE 340 4 CPU PCB Assembly 1 8921 5 900 Controller Cover 1 8611 6 PCB Shield Plate 1 8624 Page 48 Exploded View Drawings 8544apdx_engdraw.
Appendix C Exploded View (3 of 6) 29 28 26-27 1 25 24 23 2 22 21 20 3 4 5-6 19 18 17 15-16 14 7 12-13 9 11 8 10 Item Number Description QTY Part Number Item Number Description QTY Part Number 1 900 Controller Case 1 8619 16 O-ring Lubricant 1 SE 1048 2 Hex Nut 4 SE 701 17 Mounting Plate 1 2547 3 Screw/Threadlock (SE 957) 2 SE 747 18 Auxiliary Cable Assembly 1 8913 4 PCB Assembly 1 8538 19 Connector Cap 1 2859 5 Screw 2 SE 747 20 Screw 12 SE 229 6
Appendix C Exploded View (4 of 6) 1 2 3 4 10 9 8 5 7 6 Item Number Description QTY Part Number Item Number Description QTY Part Number 1 5 Amp Fuse Label 1 8537 6 Hex Nut (tighten to 16 in./lb) 17 SE 301 2 Overlay 1 8807 7 Distributor Cable Assembly 1 8539 3 Screw 1 SE 343 8 900 Controller Cover 1 8611 4 Desiccant Bag 1 8849 9 Lock Nut 1 8783 5 Lock Washer 17 SE 302 10 O-ring Main Seal 1 8606 Page 50 Exploded View Drawings 8544apdx_engdraw.
Appendix C Exploded View (5 of 6) 1 2 8 9 22 10 11 3 4 5 12 6-7 21 13 14 15 16 17 19-20 18 Item Number Description QTY Part Number Item Number 8910 12 QTY Part Number Screw 1 SE 214 Description 1 Gearbox Assembly 1 2 Motor Cable Assembly 1 8859 13 Lock Washer 1 SE 208 3 Screw 1 SE 229 14 Desiccant Card Bracket 1 2594 4 Internal Power Cable Assy.
Appendix C Exploded View (6 of 6) 1 11 10 9 Insert wires into motor terminals from gearbox side. Solder wires directly to motor terminals—snip any excess wire as necessary.
