H38.REV

THERMOMETERS, GAUGES AND RECORDING INSTRUMENTS

NOTE: FINAL COPY: JANUARY, 1987.

Part 1 -	GENERAL

1)	WORK INCLUDED

A.	Work included in this Section includes the providing of labor, materials, equipment and services necessary for a complete and safe installation in accordance with the contract documents and all applicable codes and authorities having jurisdiction for the following

NOTE: COORDINATE WITH AUTOMATIC CONTROL SYSTEMS SECTION AND AUTOMATION DEPARTMENT

1.	Thermometers.

2.	Thermometer wells.

3.	Direct connected pressure gauges.

4.	Pneumatic temperature and pressure receiver gauges and transmitters

5.	Electronic temperature, pressure, and flow receiver gauges and transmitters

6.	Valved outlets for pressure gauges.

7.	Manometers.

8.	Steam pressure and flow recording instruments.

9.	Liquid flow measuring instruments.

B.	For Air Flow Measuring Stations, refer to Section AUTOMATIC CONTROL SYSTEMS

2)	RELATED WORK AND REQUIREMENTS

A.	Requirements of GENERAL CONDITIONS, DIVISION NO.1 and Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK apply to all work in this Section

NOTE: EDIT TO SUIT PROJECT REQUIREMENTS. INCLUDE ONLY SECTIONS DIRECTLY AFFECTING WORK OF THIS SECTION

B.	Related work in the following Sections:

1.	CHILLED WATER SYSTEMS.

2.	HOT WATER SYSTEM.

3.	FAN COIL SYSTEM.

4.	REFRIGERATION PLANT. (Centrifugal Units

5.	REFRIGERATION PLANT. (Absorption Units

6.	PACKAGED RECIPROCATING WATER CHILLERS. (Water Cooled

7.	CONDENSER WATER SYSTEM. (Packaged Cooling Towers

8.	AIR HANDLING SYSTEM EQUIPMENT.

9.	AUTOMATIC CONTROL SYSTEMS.

10.	STEAM SYSTEM.

11.	-----.

3)	REFERENCE STANDARDS

A.	Published Specifications' standards, tests or recommended methods of trade, industry or governmental organizations apply to work in this Section

B.	Comply with all applicable national, state and local codes and refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for additional Reference standards

4)	QUALITY ASSURANCE

A.	Refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for Guarantee and other Quality Assurance requirements

5)	SUBMITTALS

A.	Submit shop drawings and product data for thermometers, pressure gauges, manometers, steam pressure and flow recording instruments and liquid flow measuring instruments

Part 2 -	PRODUCTS

1)	BASE BID MANUFACTURERS

A.	Direct connected pressure gauges: Ashcroft Instrument Div., Dresser Industries, inc., Helicoid Gauge Div., H.O. Trerice Co., Weiss Son, Inc. and Weksler Instruments Corp

B.	Pneumatic temperature and pressure gauges and transmitters: Ashcroft Instrument Div., Dresser Industries, Inc., Bristol Babcock, Inc., Honeywell Inc., Johnson Controls, Inc., Taylor Instrument Process Control Div., Sybron Corp., The Foxboro Co. and Fisher and Porter Co

C.	Electronic temperature pressure and flow receiver gauges and transmitters: Bristol Babcock, Inc., Honeywell Industrial Div. of Honeywell, Inc., Fisher and Porter Co. and The Foxboro Co

D.	Thermometers: Moeller Instrument Co., Palmer Instruments, Inc., Taylor Instrument Process Control Div., Sybron Corp., Trerice Co., Weksler Instruments Corp. and Weiss Son, Inc

E.	Venturi flowmeters: Barco Div. Aeroguip Corp., The Foxboro Co. and BIF Unit of General Signal Corp

F.	Pitot insert type flow meters: Dieterich Standard Corp.

G.	Differential Pressure Indicators: ITT Barton, Rosemount Engineering Co. and Meriam Instrument Co

H.	Manometers: Uehling Instrument Co., Dwyer Instrument, Inc. and Meriam Instrument Co

I.	Fuel oil flow meters: Brooks Industrument Div., Emerson Electric Co. and Flow Engineering Systems Div., Neptune Eastech

2)	THERMOMETERS

A.	For industrial case type thermometers, provide 9 inch scale, adjustable angle type brass stem with V-shaped brass or cast aluminum case and glass front, mercury filled

NOTE: STEM LENGTH AS MEASURED FROM TIP OF STEM TO BASE OF STEM THREADS

1.	Stem Length for Nominal Pipe Sizes:

a.	Below 4 inches shall be 3-1/2 inch stem, elbow mounted

b.	4-8 inches shall be 3-1/2 inch stem.

c.	10-14 inches shall be 6 inch stem.

d.	16-20 inches shall be 9 inch stem.

e.	24 inches shall be 12 inch stem.

f.	30 inches shall be 15 inch stem.

g.	36-42 inches shall be 18 inch stem.

h.	Over 43 inches shall be 24 inch stem.

NOTE: INSERT RANGES FOR OTHER SYSTEMS SUCH AS HEAT RECOVERY, ETC.

2.	Thermometer temperature ranges:

a.	Hot water system: 30-300 deg F, 2 deg increment

b.	Chilled water system: 0-100 deg F, 1 deg increments

c.	Condenser water system: 30-180 deg F, 2 deg increments

d.	Fuel oil system: 30-300 deg F, 2 deg increments

3.	Provide well with separable brass socket connection for locations within 5 feet of viewing position, similar to Moeller Instrument Co. Model 903AJ

B.	Provide vapor actuated dial type thermometers for installation in cabinets, panels and locations where temperature sensing bulb is installed more than 5 feet from viewing position. Diameter shall be 4-1/2 inch, except as noted. Case and ring shall be stainless steel. Movement shall be brass, bronze bushed, recalibrator type. Connecting tubing shall be plotted double braided bronze armor over copper capillary. Bulbs shall be copper, brass separable socket on piping. Provide flush type, back outlet, except as noted

NOTE: (1) CALIBRATION WILL VARY BY A CONSTANT IF A DIAL IS AT A DIFFERENT ELEVATION THAN THE STEM (2) CRITICAL PORTION OF TEMPERATURE RANGE SHOULD BE ON THE UPPER HALF OF THE SCALE (3) LENGTH OF BLUB DEPENDS UPON TUBE LENGTH FROM STEM TO DIAL. CHECK DATA FROM MANUFACTURER FOR PROPER BULB SIZE

1.	Provide insertion stem length the same as for Industrial Case Type

2.	Temperature ranges:

a.	Hot water system: 0-300 deg F.

b.	Chilled water system: -20-120 deg F.

c.	Condenser water system: 40-140 deg F.

d.	Fuel oil system: 30-300 deg F.

3.	Dial type shall be similar to Ashcroft Model 6140TW

NOTE: THIS SHALL BE USED WHERE MERCURY OR VAPOR TYPE CANNOT BE USED DUE TO PROCESS REQUIREMENTS

C.	Provide bi-metal type thermometers with stainless steel case, ring and dial hermetically sealed, non-removable, gasketed and 5 inches - dished dial. Stem lengths shall be the same as for industrial case type. Use well of corresponding size

1.	Temperature ranges:

a.	Hot water system: 50-300 deg F.

b.	Chilled water system: -20 to 120 shall be F.

c.	Condenser water system: 0-200 deg F.

d.	Fuel oil system: 50-300 deg F.

2.	Stem shall be stainless steel, with stainless steel thread connection. Accuracy shall be 1 percent full span. Connection shall be 1/2 inch NPT with brass well. Dial shall be adjustable and dial may be rotated 360 degrees and the stem turned 180 degrees for readability. Well shall be separable brass socket connection. Bi-metal type shall be similar to Ashcroft Model 50 EI60-E

D.	Provide thermometer wells with separable brass socket connection, cap and chain, similar to Weksler Thermowell

3)	PRESSURE GAUGES

A.	Provide 6 inches diameter gauge for pipe or equipment mounted type, with black finished cast aluminum with flangeless back, and threaded black enamel cast aluminum ring with gasketed glass face. Provide Type 316 stainless steel spring tube, stainless steel bushed precision movement and micrometer adjustment on needle. Accuracy shall be 1/2 of 1 percent full scale range. Provide bar stock needle valve cock similar to Weksler AV-44. Steam gauges shall be steel coil syphon, similar to Weksler CP54. Provide pulsation dampers, for use with positive displacement pumps, similar to Weksler Type RS7. Provide solid front type similar to Weksler Model AA 44-A

NOTE: USE DIRECT CONNECTED GAUGES WHERE SENSING ELEMENTS ARE MAXIMUM 25 FT. FROM PANEL

B.	Provide 4 1/2 inch diameter, direct connected gauge cabinet or panel mounted type, except as noted. Case and ring shall be aluminum alloy with black enamel coating and steel hinge. Movement shall be stainless steel bushed type 316, micrometer adjustment. Steam gauges shall be with steel coil syphons, and solid fronts, similar to Weksler CP54. Accuracy shall be 1/2 of 1 percent of full scale range. Provide flush type, except as noted, for use with sensing lines up to 25 feet in length, similar to Weksler Model AA44-6

NOTE: USE THE FOLLOWING FOR PNEUMATICALLY OPERATED RECEIVER GAUGES WITH CORRESPONDING PNEUMATIC TRANSMITTERS FOR DISTANCES UP TO 150 FEET. MAY ALSO BE USED FOR FLOW MEASUREMENT

C.	Provide 4 1/2 inch diameter gauges cabinet or panel mounted type, pneumatically operated, except as noted. Case shall be aluminum alloy black enamel, flush. Ring shall be black plastic. Movement shall be brass, bronze bushed, recalibrator type. Provide steam gauges with chrome plated steel coil syphon, similar to Weksler CP54. Accuracy shall be 1/2 of 1 percent of full scale range. Scales and graduations shall be as required; submit for review. Provide indicating pressure transmitter with each panel gauge including tubing, connections, valves and accessories similar to Ashcroft C-4080 for use with sensing lines up to 150 feet. Gauge shall be similar to Weksler AR14-W

NOTE: THE FOLLOWING ELECTRONICALLY OPERATED RECEIVER GAUGE WITH CORRESPONDING ELECTRONIC TRANSMITTERS MAY BE USED FOR INDUSTRIAL TYPE APPLICATIONS FOR DISTANCES IN EXCESS OF 15 FEET. REVIEW WITH AUTOMATION DEPARTMENT. MOST APPLICATIONS OVER 150 FT WILL USE AN AUTOMATED MONITORING SYSTEM

D.	Provide electronically operated cabinet or panel mounted temperature, flow or pressure gauges, with electric receiver type variable process indicator. Gauges shall be designed for operation from 120 volt nominal, 106 volt minimum, 60 plus or minus 0.5 Hz power source. Signals shall be received from transmitters up to 1/2 mile away. Receiver accuracy shall not be affected by variations in transmission line impedance, voltage fluctuations or induced effects of nearby power line. Flush mounted case shall be rectangular steel with gasketed die cast aluminum door with gray vinyl finish. Chasis shall be slide out type with plug in connector to inside rear of case. Input shall be 3-12 second pulse duration signal on a 15 second cycle. Electrical connections shall be 1/2 inch conduit. Calibrated accuracy shall be plus or minus 1/2 percent of span. Face shall be 6 inches diameter circular dial with 7 inch x 7-1/8 inch case. Provide gauge similar to Bristol Babcock Model OM1M670-9J8 Metometer Receiver

NOTE: SELECT RANGES AS REQUIRED, FILL IN CORRECT RANGE.

E.	Pressure gauge ranges in psig shall be as follows:

HWP

1.	Chilled water pump: 0-200.

2.	Chilled water pump: 0-400.

3.	Chilled water pump: 0-600.

HWP

4.	Chilled water make-up pump: 0-160.

OND

5.	Condenser water pump: 30 inches-0-30 psig.

6.	Condenser water pump: 0-200.

OND

WPMP

7.	Condenser water pump: 0-400.

8.	Condenser water pump: 0-600.

WPMP

9.	Refrigerant and steam condensers: 0-400.

STRA

10.	Condenser Strainers: 0-200.

11.	Condenser Strainers: 0-400.

12.	Condenser Strainers: 0-600.

STRA

13.	Condenser water make-up pump: 0-160.

14.	Condensate pump set: 0-60.

15.	Condenser water to cooling tower: 0-100

16.	Steam to each Refrigeration machine after pressure reducing valve: 0-200

17.	Steam to each refrigeration machine turbine: 0-200.

18.	Steam to each refrigeration machine gland seal: 0-100

19.	Steam exhaust from each refrigeration machine: 30 inches-0-30 psig

20.	Steam smothering lines to boilers: 0-250.

21.	Steam supply to each domestic hot water heater: 0-100.

22.	Low pressure, pressure reducing valve station: 0-30.

23.	Medium pressure, pressure reducing valve station: 0-160

24.	High pressure, pressure reducing valve station: 0-200

RPMP

25.	Fuel oil transfer pump: 0-50.

26.	Fuel oil transfer pump: 0-100.

27.	Fuel oil transfer pump: 0-200.

28.	Fuel oil transfer pump: 0-400.

RPMP

29.	Fuel oil priming pump: 30 inches-0-30 psig, 0-160.

30.	Fuel oil pump suction strainer: 30 inches-0-30 psig.

31.	Fuel oil transfer pump suction strainer: 30 inches-0-30 psig

FPMP

32.	Chemical feed pumps (condenser water): 0-200.

33.	Chemical feed pumps (condenser water): 0-400.

34.	Chemical feed pumps (condenser water): 0-600.

FPMP

BPMP

35.	Chemical feed pumps (Boiler): 0-60.

36.	Chemical feed pumps (Boiler): 0-300.

37.	Chemical feed pumps (Boiler): 0-400.

38.	Chemical feed pumps (Boiler): 0-800.

BPMP

39.	Chemical feed pump (Deaerator): 0-160.

40.	Diesel overflow pump: 30 inches-0-100 psig, 0-160.

41.	Diesel oil pump: 0-160.

42.	Diesel oil pump strainer: 30 inches-0-30 psig.

43.	Boiler feed pump: 0-300.

44.	Deaerator feed pump: 0-160.

EHEAT

45.	Reheat hot water pumps: 0-160.

46.	Reheat hot water pumps: 0-250.

EHEAT

AD

47.	Radiation hot water pumps: 0-160.

48.	Radiation hot water pumps: 0-250.

AD

49.	Radiation and reheat hot water make-up pumps: 0-160.

OIL

50.	Combination coil water pumps: 0-400.

51.	Combination coil water pumps: 0-250.

52.	Combination coil water pumps: 0-160.

OIL

53.	Heating coil water pump: 0-160.

54.	Cooling tower winterization water pump: 0-160.

55.	Hot water tanks for terminal reheat coils and radiation: 0-100

56.	Fuel oil hot water pump: 0-160.

57.	Fuel oil hot water make-up pump: 0-160.

GPMP

58.	Emergency generator jacket water pump: 0-50

59.	Emergency generator jacket water pump: 0-200.

60.	Emergency generator jacket water pump: 0-400.

61.	Emergency generator jacket water pump: 0-600.

GPMP

62.	Water cooler: 0-400.

63.	Refrigeration machine drain tank: 30 inches-0-30 psig.

64.	Hot well pump: 0-160.

65.	City water connection, connection to equipment: 0-100.

FPMP

66.	Boiler feed pump: 0-60.

67.	Boiler feed pump: 0-250.

68.	Boiler feed pump: 0-400.

69.	Boiler feed pump: 0-800.

FPMP

70.	Pressure gauges indicated on drawings or in specifications not indicated above shall be submitted with appropriate range for approval

4)	DIFFERENTIAL PRESSURE INDICATORS

A.	Provide 6 inch diameter differential Pressure Indicators with die cast aluminum case and elastomer ring. Movement shall be stainless steel bellows and copper torque tube; self draining. Indicating movement shall be jeweled rotary type with zero and range adjustment screws. Scales shall be uniform, calibrated in psig range 0 to 25. Accuracy shall be 1/2 of 1 percent full scale range. Manifold shall be stainless steel with carbon steel tubing. Working Pressure shall be 500 psig. Provide ITT Barton Model 224 Differential pressure unit with Model 227 Indicator and Model 235 manifold

5)	MANOMETERS

A.	Provide U-tube type, manometers with straight pyrex tubes with bottom metal connecting base. Mercury filled, scale shall be 30 inches vacuum. Graduations shall be tenths of inches, external micrometer scale adjustment, zero check cock. Provide by-pass valves and connecting tubing, shut-off valve, and drain valve. Housing shall be aluminum case with glass front and manometers shall be similar to Uehling Instrument Co. Model 30M

NOTE: USE FOLLOWING PARAGRAPH IS FOR FORMAT ONLY. CHECK WITH TRADE CHIEF ENGINEER, NEED AND LOCATION OF RECORDING INSTRUMENTS. COORDINATE WITH CORRESPONDING EQUIPMENT SECTIONS. RECORDING INSTRUMENTS ARE EXPENSIVE AND OWNER'S APPROVAL SHOULD BE OBTAINED ESPECIALLY FOR PROJECTS UNDER 1000 TON CAPACITY. COORDINATE ELECTRICAL WIRING FOR RECORDERS WITH ELECTRICAL DEPARTMENT

6)	STEAM PRESSURE AND FLOW RECORDING INSTRUMENTS

A.	Provide instruments for each steam turbine drive or absorption refrigeration unit. Record steam pressure in psig and steam flow in pounds. Steam pressure shall be compensated

NOTE: IF METER ADJACENT TO RECORDER USE DIRECT CONNECTED, IF BETWEEN 25 TO 150 FEET USE PNEUMATIC TRANSMITTERS, IF OVER 150 FEET USE ELECTRONIC TRANSMITTERS

1.	Signal transmission shall be pneumatic. Provide complete with orifice plate, connecting tubing, correction charts, isolation valves and accessories

NOTE: COORDINATE WITH ELECTRICAL DEPARTMENT.

B.	For recorders, provide charts, 12 inches diameter, 7 day, charts with direct reading, motor driven and with evenly divided graduations over entire range. Pens shall be arranged to pass each other without interference. Provide ink sufficient for 1 year of operation

C.	For steam flow measurement and integrators, calibrated accuracy shall be plus or minus 1/4 of 1 percent of full scale span. Provide flow orifices, Type 316 stainless steel with permanent maximum pressure loss of 2 psig and sized for flow as scheduled at end of this Section. Provide flow integrators with calibrated accuracy of plus or minus 1/4 of 1 percent of signals received

D.	Provide transmitters as required, complete with measuring elements including orifice flange with Type 316 stainless steel orifices and straightening vanes, as required by manufacturer recommendations and differential pressure indicator with forged steel body, 100 psig working pressure, 316 stainless steel bellows, similar to ITT Barton Model 199. Provide constant level reservoirs with shut-off and equalizing valves, mercury-filled thermal system, separable socket thermometer with armored capillary tubing and similar to Bristol Babcock Model 1G500-14

NOTE: INDICATE FLOW STATION LOCATIONS ON DRAWINGS.

7)	LIQUID FLOW MEASUREING INSTRUMENTS

A.	Venturi flowmeters: Provide coordinated system, including Venturi flowmeters and portable dry-type master meter with 6 inches dial, complete with pressure taps, quick connect and bar stock needle valves. 1/2 inch through 2 inch shall be bronze, threaded ends. 2 1/2 inch through 8 inches shall be cast steel, weld ends (or flanged ends where noted). 10 inches through 30 inches shall be fabricated steel, weld ends (or flanged ends where noted). For minimum permanent pressure loss and maximum accuracy, Venturi length shall be 1.6 times pipe size. Venturis shall include vinyl laminated tag attached to Venturi with chain to include size, venturi location, flow rate, and differential pressure reading. Venturis shall be selected to read 10 to 40 inches differential pressure on 0 - 50 inches master meter or 15 to 80 inches on a 0 - 100 inches master meter. Venturi accuracy shall be plus or minus 1 percent uncalibrated. Venturi accuracy, laboratory calibrated shall be plus or minus 1/4 of 1 percent. Minimum upstream straight pipe diameters shall be 5, downstream, shall be 2, regardless of upstream piping condition. Permanent pressure drop shall be 1 percent of 1 ft head

NOTE: SUITABLE FOR STEAM OR WATER FLOW.

B.	Annular self averaging flow meters: Provide coordinated system, including annular self-averaging flow meters with pitot insert and portable dry-type master meter with 6 inches dial, complete with hoses, disconnect valves and carrying case. 1/2 inch through 2-1/2 inch shall be Type 315 stainless steel or equal. 3 inches through 5 inches shall be Type 335 stainless steel or equal. 6 inches and 8 inches shall be Type 355 stainless steel or equal. 10 inches and larger shall be Type ANR-75 stainless steel or equal

1.	Pitot insert shall include metal tag and chain giving location, flow rate and differential pressure for meter reading. Pitot insert shall be selected to read 10 to 40 inches differential pressure on 0 - 50 inches master meter or 15 to 80 inches on a 0 - 100 inches master meter. Pitot insert accuracy shall be plus or minus 1 percent of actual flow and repeatability plus or minus 0.1 percent of actual value

NOTE: LOCATE ON DRAWINGS WITH REQUIRED STRAIGHT PIPE SECTIONS UPSTREAM AND DOWNSTREAM. DO NOT LOCATE ANY VALVES WITHIN THESE PIPE DIAMETERS

2.	Minimum upstream and downstream straight pipe diameters shall be as per manufacturer's published recommendations. If required straight pipe diameters are not available, straightening vanes shall be used. Provide pressure and temperature rating to 275 psig at 400 deg F. Hot tap pitot insert shall be used where installation or removal of element while in service is required. Provide meters similar to Annubar, Dieterich Standard Corp

C.	Provide fuel oil positive displacement flow meter with minimum pressure rating of 120 psig, temperature range to 160 deg F and flow range: --- to --- gph. Fuel oil type shall be No. ----- and meters shall be similar to Brooks Series 9400 with Digital Totalizer

Part 3 -	EXECUTION

1)	INSTALLATION

A.	Provide mercury type thermometers at inlets and outlets of bank of cooling coils, bank of heating coils, chiller, condenser, heat exchanger, each circuit, convertor, indoor cooling tower, in chilled water flow and return at entry to equipment rooms and return main for each circuit of hot water systems and as noted. For absorption refrigeration, provide mercruy type thermometers in condenser water line from condenser generator after by-pass. For turbine driven refrigeration units, provide mercury type thermometers in steam condenser hot well outlet. For condensate cooler, provide mercury type thermometers in condensate discharge line

B.	Provide thermometer wells at outlet of individual water coils and adjacent to each bulb for controllers, remote temperature indication, recording thermometers and where noted. Supply 6 spare industrial case type thermometers for use in wells

C.	Provide pressure gauges in water piping inlets and outlets of chiller, condenser and heat exchanger circuits and circulating pumps at suction and discharge, between shut-off valves and pump, condenser water inlet to cooling tower, at city water inlet to equipment or tanks, at discharge of condensate pump and boiler feed pump and as noted. At condenser water pump inlet, provide compound type pressure gauges.

1.	In steam piping, provide pressure gauges at the inlet of refrigeration unit (turbine, absorption) and convertor, pressure reducing stations at first stage inlet and at each reducing valve outlet and entry to equipment rooms and as noted. Pressure gauge at main steam header in boiler room shall be 8 inches diameter. At the turbine drain tank gauge shall be compound type

D.	Provide valved outlets for pressure gauges in supply and return of water coil assemblies and as noted. Supply 6 spare gauges for use at valved outlets

E.	Provide manometer for steam condenser of turbine driven refrigeration units and connect tubing to tapping in condenser near exhaust steam inlet for direct reading of vacuum. Supply and charge with mercury. Supply spare charge of mercury. Mount on panel adjacent to respective refrigeration unit steam condenser

F.	Mount steam pressure and flow recording instruments near respective refrigeration unit. Submit for review. Transmitters shall be racked and supported. Submit for review

G.	Install strainer immediately upstream of fuel oil flow-meter