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   Stainless Steel Internals Brass Internals
Dial 2.5” (63mm), 4” (100mm), 4.5” (115mm) and 6” (150mm), white aluminum with black and red markings 2.5” (63mm), 4” (100mm), 4.5” (115mm) and 6” (150mm), white aluminum with black and red markings
Case

2.5” (63mm), 4” (100mm): AISI 304 SS

4.5” (115mm), 6” (150mm): Aluminum, painted black

2.5” (63mm), 4” (100mm): Steel, painted black

4.5” (115mm), 6” (150mm): Cast aluminum, painted black

Lens

2.5” (63mm), 4” (100mm): Polycarbonate

4.5” (115mm), 6” (150mm): Glass

2.5” (63mm), 4” (100mm): Polycarbonate

4.5” (115mm), 6” (150mm): Glass

Ring

2.5” (63mm), 4” (100mm): No ring

4.5” (115mm), 6” (150mm): Aluminum

2.5”(63mm): No ring

4” (100mm): Steel

4.5” (115mm), 6” (150mm): Aluminum

Socket AISI 316 SS Brass
Connection 1/4” NPT standard 1/4” NPT standard
Diaphragm Element AISI 316 SS Phosphor bronze
Movement AISI 316 SS

2.5” (63mm): Engineering plastic upper and lower plate with brass pinion and sector;

4” (100mm), 4.5” (115mm), 6” (150mm): Brass

Pointer Aluminum, anodized black Aluminum, anodized black
Welding TIG Solder/brazed
Working Pressure 75% of full scale value 60% of full scale value (fluctuating) 75% of full scale value (static)
Over-pressure Limit 30% of full scale value 30% of full scale value
Ambient/Process Temperature -40°F to 150°F (-40°C to 65°C) -40°F to 150°F (-40°C to 65°C)
 Accuracy ±1.6% of full scale ±3-2-3% ANSI/ASME Grade B
Enclosure Rating IP52 IP52