Ultra Low pressure gauge
Type: P423
 
Service intended
 
P423 series are designed to measure ultra low, vacuum or compound pressure. 
These models have a stainless steel measuring element 
which consists of two formed diaphragms and diaphragms 
are welded together.
 
Nominal diameter
 
100 mm
 
Accuracy
 
· ±1.6% of full scale 
 
Scale range (kPa, mbar)
 
· -1 ~ 0 to -0.2 ~ 0 kPa
· -0.1 ~ 0.1 to -0.5 ~ 0.5 kPa
· 0 ~ 0.2 to 0 ~ 1 kPa
 
Working pressure
 
· Steady pressure : 75% of full scale 
· Over range protection : 130% of full scale
 
Working temperature
 
· Ambient : -20 ~ 65 °C
· Fluid : Max. 100 °C
 
Temperature effect
 
Accuracy at temperature above and below the reference 
temperature (20 ℃) will be effected by approximately
±0.6 % per 10 ℃ of full scale 
 
 
Standard features
 
Pressure connection
 
Stainless steel (316SS)
 
Element
 
· Stainless steel (316L SS)
· Pressure Chamber : Up to 1 kPa
 
Case
 
Stainless steel (304SS)
 
Cover
 
Stainless steel (304SS)
 
Window
 
Safety glass
 
Movement
 
Brass
 
Dial
 
White aluminium with black graduations
 
Pointer
 
Black painted aluminium alloy
 
Process connection
 
¼", ⅜", ½" PT, NPT and PF 
 
Option
 
Internal zero adjustment
 
 
Download:  CATALOG