Series 490A Hydronic Differential Pressure Manometer
Bulletin D-24A
Specifications - Installation & Operating Instructions
SPECIFICATIONS
Service:
Compatible gases & liquids.
Wetted Materials:
316 SS; -3V option: 316LSS, Buna-N, silicone, grease, PTFE,
brass 360, copper, reinforced acetal copolymer; -HKIT option: 316LSS, PTFE,
brass, copper.
Accuracy:
±0.5% FS from 60 to 78°F (15.6 to 25.6°C); ±1.5% FS from 32 to 60°F
and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C).
Pressure Hysteresis:
±0.1% FS.
Pressure Limits:
See chart
Temperature Limits:
Operating: 0 to 140°F (-17.8 to 60°C); Process with -HKIT
option: -20 to 180°F (-29 to 82°C); Storage: -4 to 176°F (-20 to 80°C).
Display:
4-digit LCD (.425˝ H x .234˝ W digits).
Resolution:
See chart.
Process Connections:
Two 1/8˝ (3.18 mm) female NPT; -HKIT option: Two 1/4˝
male 45° flare fittings.
Power Requirements:
9 V alkaline battery, installed non-functional, user
replaceable.
Weight:
14.1 oz (400 g); -HKIT option: 3.6 lb (1.63 kg).
Agency Approvals:
CE.
Series 490A Hydronic Differential Pressure Manometer
are versatile, hand-held,
battery operated manometers available in several basic ranges for positive or
positive differential pressure measurement and can tolerate most liquid media
compatible with 316LSS. A memory function allows storage of up to 40 readings for
later recall and a backlight provides auxiliary lighting for hard-to-see locations.
Standard are a hold feature and both visual and audible overpressure alarms. A
new feature added to the Series 490A is a field adjustable damping, independent
viewable high/low pressure readings, and low range increased resolution. This
allows the user to choose the level of display averaging rate corresponding to the
fluctuation level common in many applications. A 9 V alkaline battery is included
that provides up to 100 hours of operation.
Model
490A-1
490A-2
490A-3
490A-4
490A-5
490A-6
English
Range
0 to 15 psi
0 to 30 psi
0 to 50 psi
0 to 100 psi
0 to 500 psi
0 to 200 psi
Metric
Range
0 to 103.4 kPa
0 to 206.9 kPa
0 to 344.8 kPa
0 to 689.5 kPa
0 to 3448 kPa
0 to 1379 kPa
Maximum
Pressure
30 psi (2.7 bar)
60 psi (4.13 bar)
100 psi (6.89 bar)
200 psi (13.78 bar)
1000 psi (68.9 bar)
400 psi (27.57 bar)
Available Engineering Units
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
psi, in w.c., in Hg, cm w.c., mm Hg, kPa, hPa, mbar, bar, oz/in
2
6-15/64
[158.27]
29/32
[22.86]
2-53/64 [71.73]
1/8 NPT
1-1/4
[31.75]
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