《descriptionofsystem》由会员分享，可在线阅读，更多相关《descriptionofsystem（8页珍藏版）》请在金锄头文库上搜索。
1、Specifications:The equipment to be provided in this section is to be standard catalog products of a systems supplier of control and telemetry products. All level transducers control, monitoring, telemetry equipment and software furnished shall be standard catalogued products of the system supplier t
2、o assure single source responsibility. Systems utilizing generic programmable controllers (PLCs) are not acceptable. Not less than eighty percent by dollar volume of all equipment furnished shall be standard catalogued products of the system.Construct the equipment specified in this section in a UL
3、508 listed controls manufacturing facility. Provide certification of UL 508 compliance with submittals.SureControl equipment as supplied by Enviromation, Inc. has been established as the standard of quality to furnish a system compatible with the telemetering equipment presently installed at the Mai
4、n Side Water Treatment Plant.Other Control System Suppliers, proposing to furnish compatible systems and having the qualification enumerated below will be considered, subject to a detailed offering and an acceptable statement of qualifications.1.3QualificationsThe System /suppliers shall be a system
5、 integrator who is regularly engaged in such work and has the following minimum qualifications: A.A minimum of 5 years of experience in supplying telemetering systems.B.Have a minimum of 4 qualified service technicians on staff who have experience in installing, starting up, maintenance and repair o
6、f telemetering systems. At least two of these technicians shall work at a location within 200 miles of the job site and shall work directly for the System Supplier.1.4System ResponsibilityA.The Telemetering System Supplier shall assume complete responsibility for engineering, programming furnishing,
7、 implementing, technically advising on and certifying the correctness of installation, making finial correction to, installing, terminating, calibrating, adjusting, documenting, testing and starting up the complete system. In addition, the Supplier shall coordinate and cooperate with any other Subco
8、ntractor, Equipment Vendor, Owner, Engineer and Prime Contractor as required and necessary to ensure the successful and timely startup of this project.1.5Regulatory RequirementsA.Material, equipment and installation shall meet requirements of applicable federal, state and codes and standards. Where
9、applicable, material and equipment shall bear the UL label.1.6SubmittalsA.Submit shop drawings and product data in accordance with section 01000 General Requirements.(1)Specifications, dimension, wiring and/or piping drawings covering all items of equipment including interconnection diagrams to full
10、y correlate field wiring and equipment termination.(2)Supplementary information deemed necessary by Supplier or Engineer to fully illustrate full compliance with Specifications.B.Submit operation and maintenance data, in accordance with Section 01000 General Requirements.C.Deliver maintenance materi
11、als, spare parts and test equipment to Owner prior to project closeout.1.7Protection Against Lightning Induced VoltagesA.Provide power line protectors on AC power supply to all electronics equipment. Each panel will be provide with AC lightning protection. AC lightning protectors shall be manufactur
12、ed by Joslyn, MCG, Phoenix, or approved equal.B.Provide signal line protectors on all items of equipment mounted outside of buildings orstructures or connected to signal lines installed between buildings or structures.C.Protectors shall conform to the following:(1)Protectors shall conform to equipme
13、nt manufacturers recommendations.(2)Gas filled, spark gap arresters, fused metal-oxide varistors and inductors will be considered the minimum protection acceptable for AC incoming power.(3) Zener-diodes and inductors will be considered the minimum protection acceptable for low-voltage dc signal cond
14、uctors.(4) All surge protection shall be earth grounded or suitably connected to a metallic water pipe.D.Lightning protection devices shall be as manufactured by Joslyn, MCG, Phoenix or approved equal.2.0PRODUCTS2.1Tank Level TransducerA.Static Error Band: =1-0.5% for calibrated range. Includes line
15、arity, hysterisis andRepeatability.B.Temperature Range: 1.Compensated: =25 to =150 degrees F. 2.Operating: -40 to =176 degrees F.C.Temperature Effect: Over any 100 degree F range within the compensated range. 1. Zero: +1-2.0% of rated range. 2. Span: +1-2.0% of output multiplied by turndown ratio.D.
16、Zero and Span Adjustment Range Span: 1. 6.5 turn down ratio: 100% to 15% of rated range. 2. Zero Suppression: 85% maximum with maximum turn down.E.Ripple: 0.1% F.S. RMS, maximum.F.Output Impedance: 1.0 meg ohm, nominal.G.Power Input: 12 to 38 VDC, 24VDC nominal.H.Input Voltage Effect: 1% input voltage change to cause less than or equal to .005% change in output.I.Overpressure Ratings: 1. Proof Pressur
