PRESSURE GAUGE PRESSURE GAUGE
PRESSURE GAUGE PRESSURE GAUGE
PRESSURE GAUGE PRESSURE GAUGE
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LOW <strong>PRESSURE</strong> <strong>GAUGE</strong><br />
MODEL : P421 SERIES<br />
SERVICE INTENDED<br />
The P421 Series are designed to measure low pressure,<br />
vacuum or compound ranges. These models have a stainsteel 316L<br />
measuring element which consists of two formed diaphragms which<br />
have been welded together.<br />
NOMINAL DIAMETER<br />
75, 100 and 150mm<br />
ACCURACY<br />
±1.5% of Full Scale<br />
SCALE RANGE<br />
Refer to Pressure Table<br />
WORKING <strong>PRESSURE</strong><br />
Steady : 75% of Full Scale<br />
Over Range Protection : 130% of Full Scale<br />
WORKING TEMPERATURE<br />
Ambient : -20 ~ 65˚C<br />
Fluid : -20 ~ 80˚C<br />
Standard Features<br />
<strong>PRESSURE</strong> CONNECTION<br />
100mm and 150mm : 304SS and 316SS<br />
75mm : Cr Plated Brass<br />
ELEMENT<br />
75mm, 100mm and 150mm : 316SS and 316LSS<br />
75mm : Phosphor Bronze<br />
Pressure Chamber : up to 3500mmH 2O<br />
C type Broudon Tube : 4000, 5000mmH 2O<br />
CASE<br />
304SS<br />
COVER<br />
304SS<br />
WINDOW<br />
Glass (75mm)<br />
Tempered Safely Glass<br />
(100mm and 150mm)<br />
MOVEMENT<br />
Brass<br />
DIAL<br />
POINTER<br />
White Aluminium with<br />
Black Graduations<br />
Aluminium alloy, Black painted<br />
CONNECTION<br />
75mm : 3/8” PT , NPT & PF<br />
100mm and 150mm : 3/8” 1/2” PT, NPT & PF<br />
PD04-02
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