2 1/2″ All Stainless Steel Industrial Pressure Gauges Model Number 25SS

Durable and corrosion resistant, our Stainless Steel gauges are made to provide maximum protection in harsh conditions.

• Built-In Over-Range and Under-Range Protection
• Welded Socket to Case on 6″
• Reinforced Sector Improves Accuracy Over Life of Gauge
• 4″ & 6″ Gauges Come with Removable Stainless Steel Restrictor

Case:AISI 304 Stainless Steel in 2-1/2″ (63 mm), 4″ (100mm), and 6″ (150mm) diameter. Case and socket welded together on 6″ gauges.

Fill:Glycerine Filled or Dry, (Dry gauges can be filled). Silicone optional on 4″ and 6″ gauges.

Ring:AISI 304 Polished Stainless Steel, Bayonet Connection on 25SS, 40SS, and 60SS. Crimped Bezel Ring on 25CS.

Window:Instrument Glass. Safety Glass optional on 4″ and 6″ gauges

. Socket:AISI 316 Stainless Steel. Ranges over 200PSI on 4″ and 6″ gauges come with removable Stainless Steel Restrictor. No restrictor on 2-1/2″ gauge.

Connection:1/4″ on 2-1/2″, 1/2″ NPT on 4″ and 6″, Optional 1/2″ F to 1/4″ M NPT SS Adaptor.

Bourdon Tube:All Pressure Sensing Elements are AISI 316 Stainless Steel. All 2-1/2″ gauges less than 600 PSI, and 4″ and 6″ gauges less than 1000 PSI range use a C-tube configuration. All other gauges use a spiral tube.

Movement:Stainless Steel.

Pointer:Balanced Black Aluminum. Micrometer adjustable in 25SS, 40SS, and 60SS only.

Dial:White Aluminum with black markings in accordance with ASME B40.1 -2005.

Range Availability:PSI, Metric, and Dual Scales. See information on pg 9.

Process Fluid Temperatures:212°F (100°C) maximum for standard tube and socket materials.

Overpressure Limits:As a percent of full scale value:
o 30% for ranges up to 870 PSI (60 Bar).
o 25% for ranges from 870 to 1400 PSI (100 Bar).
o 15% for ranges above 1400 PSI (100 Bar).
Overpressure in excess of these values may affect calibration but will not damage the movement due to the mechanical stops.

Temperature Errors:For a normal temperature of 68° F (20° C) approximately +0.3% error for a temperature increase of 18° F and -0.3% error for a temperature decrease of 18° F (10°C). Refer to order matrix for dual scale codes.