In addition, the user has the ability to adjust full scale for each chemistry, in discrete steps, to accommodate 1, 2, 3, or 4 times the calibrator concentration. The YSI 2730 also provides three discrete signal outputs (TTL logic level) to control external pumps which can be used to replenish nutrients or optimize byproduct concentrations.
External Chamber..........0.75 x 0.75 x 0.88 inches Pump Head ............2.0 x 2.2 x 0.85 inches Pump Motor ............13.6 VDC, 2-40 rpm, 22 inch-ounce torque (power source is 2730 Board) Sample Inlet Tubing ..........Silicone, 0.08 OD x 0.02 ID (inches) Volume............. 5.1 microliters/inch ®...
417# 'LJLWDO#6LJQDOV Signal Direction Description Ready output Active High, set immediately after analog outputs have been updated. This signal will reset itself immediately prior to updating the analog outputs if not reset externally via the Ack\ signal input. Ack\ input Active low, resets Ready output, minimum width >10ms.
Remove the two screws on the upper rear of the instrument to allow the hinged back panel to open. Open the rear panel to expose the main printed circuit board and the smaller "piggyback" YSI 2710 turntable controller board as shown in Figure 1.
Best results are obtained by alternately prying one end of the IC and then the other. Once the old EPROM has been removed, make sure that all the pins are straight on the new 2730 EPROM and install it in the U11 socket. Make sure that the orientation of the IC (the position of the notch) agrees with that of the part that was just removed.
Figure 4. Reuse the two 5/16" locknuts that were removed above and secure the Pump/Valve Assembly. 13. Plug the Pump Motor lead (six conductor) into the socket marked J4 on the 2730 PC board. (The connector is keyed for proper installation.) Plug the Solenoid Valve lead (two conductor) into the socket marked J3.
18. Install the supplied label on the back of the instrument to indicate that it is equipped with the 2730 hardware. This is intended to prevent others from using the instrument with the turntable (doing so would damage the 2730 circuits).
Figure 5 Tube Routing Label 22. Activating monitoring software. Refer to Software Flow Chart (Figure 9). Press the MENU key, then choose 2-Setup, then 3-RunMode, then 4-Monitor. Six selections are shown. Set the Monitor default parameters to those shown below, confirming each by pressing the ENTER key. You may change parameters later to fit your application.
See the following sections if you have special Analog/Control Output requirements. 3.2.1 Full Scale Voltage The Digital-to-Analog Converters on the YSI 2730 circuit board may be individually configured to provide either +5 volts or +10 volts full scale. The JP1 jumper positions 3 through 6 control this parameter.
YSI enzyme biosensor, filtration and/or dilution may not be necessary and the 2700/2730 may draw the sample directly. If cell loss is a concern, or if high cell density is expected, a filtration device (e.g., tangential flow filter) which separates broth and cells may be installed between the sample source and the 2730 Monitor and Control accessory.
4.1.2 Examples Monitor Only Monitor with 2730 Control Monitor with Computer Control Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
These "handshake signals" are nominally +5 volts for a logic 1 and ground (0 volts) for a logic 0. The "READY" signal is output from the YSI 2730 and is set to a logic 1 when the analog output signals have been updated.
Biochemistry Analyzer. If you ordered the 2700 and 2730 together and are setting up for the first time, you should refer to the 2700 SELECT USER’S MANUAL for instructions. Once you have successfully set up and operated the 2700 in the discrete sampling mode, you may proceed with the 2730 Monitor and Control Accessory installation and setup.
814# 6RIWZDUH Features specific to the YSI 2730 have been added to the Setup and Service sections of the 2700 menu structure. Figure 9 shows the new structure with the 2730 features in bold lettering. The following section briefly describes the 2730 menu options.
815# 6HWXS 5.2.1 Monitor As described in Section 2, Installation, there are six menu selections under Monitor Setup that you must consider. Briefly, they are: External Pump Purge Time..Time in seconds required to deliver fresh sample from your source to the External Sampling Chamber Station # ........Station number where the Sipper Tube will go for a monitor sample, usually station #5 the external sampling chamber...
Section 5.2.1) and the antiseptic solution must be primed immediately after the tubing is reconnected (see Section 5.3.1). The 2730 may be used for process monitoring and/or control applications without the use of an antiseptic. Refer to Section 5.2.1. 5.2.4 Make-Up Cycle The make-up cycle occurs after the 2730 has pumped sample from the sample source for the user programmed amount of time and the sipper is ready to aspirate.
However, the flexibility to disable is there and may be exercised. If you are writing a software program to remotely command the 2700/2730 system (via the RS232 port), you may want to disable all autocalibration parameters and bring calibration frequency totally under your software program control.
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To calculate the minimum feed stock concentration use the following formula: Cnc = (SI * Mrc * Vol) / (.8 * SI) Where: SI = 2700 Sampling Interval in minutes. Mrc = Maximum rate of change of the analyte concentration in the analyte’s unit of measure per minute per liter of volume (e.g.
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TPU = (1 / 0.035) * 3.5 TPU = 101 The TPU parameter has another important function in the 2730 software. PID regulation is enabled whenever this parameter is not zero (See Section 6). No pump control output will occur if this parameter is set to zero.
PID control algorithm. The 2730 control algorithm is no exception. Certain assumptions apply to the application of this control scheme of which the user should be aware. Deviations from these assumed conditions will result in degraded regulation.
PharMed pump tubing, solenoid valve tubing, antiseptic tubing and sample source tubing. The 2731 Preventive Maintenance Kit provides a complete set of tubings for the YSI 2730 Monitor and Control Accessory. If you elect to clean tubings, solutions such as 70% isopropanol, 0.5% hypochlorite, and mild detergents in water are acceptable cleaning agents.
Next install a retainer washer on the sample line and insert the tubing through the outer pump chamber such that the plastic retainer tab and washer will be located on the top when mounted. Reassemble the 2 pump housings insuring they mate flush. Rotate the halves so that the mounting holes are aligned.
Before taking corrective action related to any problem, be certain to collect as much pertinent data as possible. Try to make use of the 2730 service and diagnostic routines to test potential problem areas. If you cannot resolve a problem, contact YSI Technical Support for help (See APPENDIX B). When you communicate with service personnel, please indicate the serial number of the 2700 SELECT and the serial number of the 2730 Monitor and Control Accessory.
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________________________________________________________________ Bubbles appear at the top of the 2730 External Chamber when the Monitor Pump runs. POSSIBLE CAUSE: The 2730 Monitor Pump tubing is not configured properly and fluid in the waste line is trying to flow backwards. CORRECTIVE ACTION: Check Section 8.1 and correct tubing configuration.
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POSSIBLE CAUSE: Tubing routed incorrectly in solenoid valve. CORRECTIVE ACTION: Check tubing routing per Section 8.1.2. NOTE: Replace membrane if damaged by antiseptic. FOR PROBLEMS NOT IDENTIFIED IN THE ABOVE CHART CONTACT YSI TECHNICAL SUPPORT FOR ASSISTANCE. REFER TO APPENDIX B FOR PHONE, FAX AND ADDRESS INFORMATION.
;18# 3DUWV#/LVW REF # PART NO. DESCRIPTION 2731 Preventive Maintenance Kit 110430 PC board assembly 062428 Fuse, PCB, 2 Amp, 125V, fast act. 027709 Cable, interface 8.5.1 Monitor Pump/Solenoid Assembly Refer to reference numbers in the diagram on the following page (Figure 14). REF # PART NO.
<1# $SSHQGL[#$#0#5HTXLUHG#1RWLFH The Federal Communications Commission defines this product as a computing device and requires the following notice. This equipment generates and uses radio frequency energy and if not installed and used properly, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class A or Class B computing device in accordance with the specification in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation.
431# $SSHQGL[#%#0#:DUUDQW\#DQG#6KLSSLQJ ,QIRUPDWLRQ The YSI Model 2700 Analyzer is warranted for one year from date of purchase by the end user against defects in materials and workmanship, exclusive of batteries. Within the warranty period, YSI will repair or replace, at its sole discretion, free of charge, any product that YSI determines to be covered by this warranty.
We will contact the sender for instructions as to the disposition of the equipment. Disposition costs will be the responsibility of the sender. When service is required, either at the user's facility or at YSI, the following steps must be taken to insure the safety of our service personnel.
4315# 3DFNLQJ#,QVWUXFWLRQV 1. Clean and decontaminate items to insure the safety of the handler. 2. Complete and include the Cleaning Certificate. 3. Place the product in a plastic bag to keep out dirt and packing material. 4. Use a large carton, preferably the original, and surround the product completely with packing material.
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