[e.
Dual temperature water, from minus one to 116 degrees C 30 to 240
degrees F.]
[f.
Heating hot water temperature, from 38 to 121 degrees C 100 to
250 degrees F.]
[g.
Condenser water temperature, from minus one to 54 degrees C 30 to
130 degrees F.]
[h.
Outside air temperature, from minus 34 to 54 degrees C 30 to 130
degrees F.]
[i.
Relative humidity, from 0 to 100 percent for high/low limit
applications; from 20 to 80 percent for space applications.]
[j.
Differential pressure for VAV supply duct static pressure from 0
to 498 Pa 0 to 2.0 inches water gage.]
[k.
Pitot tube airflow measurement station and transmitter, from 0 to
25 Pa 0 to 0.1 inch water gage for flow velocities of 2.50 to 6 m/s
500 to 1200 fpm, 0 to 62 Pa 0 to 0.25 inch water gage for
velocities of 2.50 to 9 m/s 500 to 1800 fpm, or 0 to 124 Pa 0 to
0.5 inch water gage for velocities of 2.50 to 13 m/s 500 to 2500
fpm, or 0 to 374 Pa 0 to 1.5 inches water gage for velocities of
7.5 to 23 m/s 1500 to 4500 fpm, or 0 to 498 Pa 0 to 2 inches water
gage for velocities of 15 to 30 m/s 3000 to 6000 fpm as required
by the duct system.]
[l.
Electronic airflow measurement station and transmitter, from 0.64
to 13 m/s 125 to 2500 fpm, 7.5 to 23 m/s 1500 to 4500 fpm, or 15
to 30 m/s 3000 to 6000 fpm as required by the duct system.]
2.6.2
Temperature Sensors
2.6.2.1
Resistance Temperature Detectors (RTD's)
RTD shall be platinum with a tolerance of plus or minus 0.25 percent at 0
degrees C 32 degrees F, and shall be encapsulated in epoxy, Series 300
stainless steel, anodized aluminum, or copper. RTD shall be furnished with
RTD transmitter as specified, integrally-mounted unless otherwise indicated.
2.6.2.2
Continuous Averaging RTD's
Continuous averaging RTD's shall have a tolerance of plus or minus 0.55
degrees C 1.0 degrees F at the reference temperature, and shall be of
sufficient length to ensure that the resistance represents an average over
the cross section in which it is installed. Sensing element shall have a
bendable copper sheath. Averaging RTD shall be furnished with RTD
transmitter as specified, to match the resistance range of the averaging
RTD. Element length shall be a minimum of 3280 mm per square meter one
linear foot per square foot of coil face area.
2.6.2.3
RTD Transmitter
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NOTE: Indicate where transmitters are required and
not required.
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SECTION 15901N
Page 23
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