Cycle time adjustable range
[1 to 5] [_____] minutes
2.2.12
Blowers
Blowers shall conform to [Section 11215 FANS/BLOWERS/PUMPS; OFF-GAS]
[_____]. Dry contacts and 4 to 20 mA signals shall be provided in the
control panel for remote monitoring.
2.2.13
Dew Point Monitor
The dew point transmitter shall be of a solid state design housed in a NEMA
4 enclosure as defined in NEMA 250, with an accuracy of plus or minus 3
degrees C over an operating ambient temperature range of minus 10 to plus
60 degrees C, over a dew point range of minus 110 to plus 10 degrees C.
The transmitter shall receive the signal from the thin film aluminum metal
oxide sensor, convert and send it as a [single 4 to 20 mA DC signal
proportional to the dewpoint level] [direct digital reading] to the central
control unit. Sensor shall transmit output to an analyzer with digital
display.
2.2.14
Pressure Gauges
Water pressure gauges shall be glycerine filled units conforming to the
requirements of ASME B40.100.
2.2.15
Sampling Ports
Aqueous and gas phase sampling ports shall be provided [where indicated on
the drawings] [upstream and downstream of each reactor vessel]. Sampling
ports shall be provided at locations accessible to plant operators. Ports
and associated piping shall be constructed of [6] [12] [_____] mm [1/4]
[1/2] [_____] inch minimum diameter [PVDF] [316 stainless steel] [teflon]
[_____] with [PVDF] [316 stainless steel] [_____] [NPT x hose] ball valves.
2.2.16
Gas Flow Meters
**************************************************************************
NOTE: Numerous meters may be required which may
necessitate a table be included identifying the flow
capacity for each unit.
**************************************************************************
Flow meters for ozone or oxygen applications shall have stainless steel
body, tube, valves, floats, and knobs with glass windows. Flow meter shall
be rated for a flow rate of [_____] cms scfm at a minimum pressure of [345]
[_____] kPa [50] [_____] psi. Each flow meter shall be provided with a
separate stainless steel valved connection for ease of maintenance. Each
pipe penetration through the reactor wall serving a single ozone diffuser
or bank of diffusers shall be equipped with a flow meter. The [air]
[oxygen] feed stream to the ozone generator shall also be equipped with a
flow meter. Each flow meter shall have an easily readable scale in cms scfm
with a minimum of ten divisions from zero to 150 percent of the expected
flow through the meter. Each meter shall be provided with an analyzer
which receives the signal from the flow meter transmitter, converts and
sends it as a [single 4 to 20 mA DC signal proportional to the flow rate]
[direct digital reading] to the central control unit. Sensor shall
transmit output to an analyzer with digital display.
SECTION 11377
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