SECTION 23 05 19 METERS AND GAUGES FOR HVAC PIPING PART 1 GENERAL 1.1 SUMMARY A. Section includes 1. Digital Thermometers. 2. Pressure Gauges. 3. Test Plugs and Kits. 1.2 DEFINITIONS A. CR: Chlorosulfonated polyethylene synthetic rubber. B. EPDM: Ethylene-propylene-diene terpolymer rubber. 1.3 SUBMITTALS A. Submit in accordance with Section 01 33 00 and 01 33 23. B. Product Data: For each type of gauge and fitting specified. Provide manufacturers data which indicates use, construction, operating range, total range, accuracy, and dimensions. Submit a gauge schedule showing manufacturer s figure number, scale range, location and accessories for each gauge. 1. Provide a Gauge Application Table indicating each different use of gauges and the gauge range to be utilized, including minimum and maximum measurement valves. C. Wiring Diagrams: For power, signal and control wiring. D. Product Certificates: For each type of thermometer and gauge, signed by product manufacturer. E. Maintenance Data to be included in the Operating and Maintenance Manuals specified in Division 1. Include data for the 1. Thermometers. 2. Pressure gauges. 3. Test Plugs. 1.4 QUALITY ASSURANCE A. Comply with applicable portions of American Society of Mechanical Engineers (ASME) and Instrument Society of America (ISA) standards pertaining to construction and installation of meters and gauges. B. Design Criteria: The Drawings, Piping Diagrams and Details indicate the location of thermometers, gauges and test ports. Thermometers and gauges are based on the specific manufacturer types and models indicated. Thermometers and gauges having equal BID SET 23 05 19-1 SEPTEMBER 28, 2011
performance characteristics by other manufacturers may be considered, provided that deviations do not change the design concept or intended performance as judged by the CDCR Representative. The burden of proof for equality of meters and gauges is on the proposer. 1.5 EXTRA MATERIALS A. Test plugs and kits. PART 2 PRODUCTS 2.1 DIGITAL THERMOMETERS 3. Weksler Instruments Corp. B. Basis of Design: Weiss Vari-angle Digital Thermometer, Model #DVU35 with the 1. Accuracy 1-percent of reading or 1-degree, whichever is greater. 2. Range: -40-to-300-degree F. 3. Case Hi-Impact ABS. 4. Display 3/8-inch LCD digits, wide ambient formula. 5. Resolution 1/10-degree between -19.9/199.9-degree. 6. Recalibration internal potentiometer. 7. Lux rating 10-lux (one-foot candles) 8. Update every 10 seconds. 9. Ambient temperature error Zero. 10. Humidity 100 percent 11. Sensor glass passivated thermister. C. Thermometer wells for above: Weiss Instruments, Inc.- Industrial Thermometer Wells (separable socket) as follows: 1. Brass Construction for copper pipe; stainless steel for steel pipe. 2. 2/4-inch NPT size. 3. 3-1/2-inches stem size or 6-inches stem size. 4. Standard or extension neck to suit installation. 5. Schedule: a. ModelStem Size. b. E-35-75BS, 3-1/2-inches. c. ER6-75BS, 6-inches. d. EN6-75BS, 6-inches insertion and 2-1/2-inches extension for insulation. 2.2 PRESSURE GAUGES 3. Weksler Instruments, Inc. BID SET 23 05 19-2 SEPTEMBER 28, 2011
B. Basis of Design: Weiss Model Solar Powered pressure gauge with the 1. Case: 4-1/2-inches black steel glass reinforced thermo plastic (PBTP), solid front construction, blow out back safety design, weatherproof IP65. 2. Sensor: Lux Capacitor. 3. Wetted Materials: Phosphor Brass/Bronze. 4. Connection: 1/4-inch NPT. 5. Range: 0-400-psi. 6. Accuracy: 0.5-percent full scale ASME B40.100 7. Ambient Operating: -15 to +150-degree F. 8. Display: LCD. 9. Lux Rating: <10 (one foot candle). 10. Digits: (4) 5/8-inch high. 11. Update: One Second. C. Pressure Gauge Accessories: 1. Pressure Snubbers: Weiss [PSN-B] pressure snubber with the a. 1/4-inch FNPT gauge connection and 1/4-inch MNPT process connection. b. Corrosion resistant porous metal dampering element/disc. c. Pressure rating @ 70 degree F is 15,000-psi. d. Brass construction. 2.3 PRESSURE GAUGES (NATURAL GAS) 3. Weksler Instruments, Inc. B. Basis of Design: Weiss Model Solar Powered pressure gauge with the 1. Case: 4-1/2-inch black steel glass reinforced thermo plastic (PBTP), solid front construction, blow out back safety design, weatherproof IP65. 2. Sensor: Lux Capacitor. 3. Wetted Materials: Phosphor Brass/Bronze. 4. Connection: 1/4-inch NPT. 5. Range: 0-400 psi. 6. Accuracy: 0.5-percent full scale ASME B40.100 7. Ambient Operating: -15 to +150-degrees F. 8. Display: LCD. 9. Lux Rating: <10 (one foot candle). 10. Digits: (4) 5/8-inch high. 11. Update: One Second. 2.4 TEST PLUGS AND KITS 1. Texas Fairfax Company. 3. Sisco Co., Spedco, Inc. BID SET 23 05 19-3 SEPTEMBER 28, 2011
B. Test Plug Basis of Design: Texas Fairfax Company with the 1. 1/4-inch or 1/2-inch NPT brass fitting and cap for receiving 1/8-inch outside diameter pressure or temperature probe with neoprene core for temperatures up to 200-degrees F; neoprene core for temperatures up to 350-degrees F; lag extension for pipe insulation. C. Test Kit Basis of Design: Texas Fairfax Company with the 1. Internally padded and fitted carrying case; two (2) 3-inch diameter pressure gaugesscale range: 0 to 200-psi; two gauge adapters with 1/8-inch type 316 stainless steel probes; two (2) 1-inch dial thermometers with 5-inch stem and external calibration-scale range: 25 to 125-degree F; two (2) 1-inch dial thermometers with 5-inch stem and external calibration- scale range: 0 to 220-degree F. PART 3 EXECUTION 3.1 GENERAL A. Install in complete conformance with the manufacturer s instruction. B. Provide instruments with scale ranges selected according to service with largest appropriate scale. C. Install pressure gauges and thermometers in locations where they are easily read from normal operating level without crawling or climbing. Install vertical to 45-degrees off vertical. D. Adjust gauges and thermostats to final angle, clean windows and lenses and calibrate to zero. 3.2 THERMOMETERS A. Provide thermometers where indicated on the drawings, piping diagrams, and details. Install thermometers in piping systems in sockets in short couplings. Enlarge pipes smaller than 2-1/2 inches for installation of thermometer sockets 24-inches on each side of the thermometer. Ensure sockets allow clearance from insulation. 3.3 GAUGES A. Provide pressure gauges where indicated on the drawings, piping diagrams, and details. B. Install pressure gauges with snubbers. Provide ball valve to isolate each gauge. Extend nipples to allow clearance from insulation. 3.4 TEST PLUGS AND KITS A. Provide temperature and pressure test plugs where indicated on the drawings, piping diagrams, and details. B. Turn over test kit to CDCR at project closeout. 3.5 ADJUSTING AND CLEANING A. Adjusting: Adjust faces of gauges to proper angle for best visibility. BID SET 23 05 19-4 SEPTEMBER 28, 2011
B. Cleaning: Clean windows of meters and gauges and factor-finished surfaces. Replace cracked and broken windows and repair scratched and marred surfaces with manufacturer s touchup paint. END OF SECTION BID SET 23 05 19-5 SEPTEMBER 28, 2011