P239 test pressure gauge series are designed to be a transfer standard for periodically checking the accuracy of pressure instruments. Its use expends to a laboratory instrument for research and test labs. External adjustable dial and zero adjustable pointers are avilable for some models. It is an excellent choice for process applications where high accuracy is must.
Nominal diameter | 160 and 250 mm |
Accuracy | ± 0.25% of full scale |
Scale range (MPa, kPa, bar) | 0 ~ 60 kPa to 0 ~ 100 Mpa |
Working pressure | Steady : Full scale value |
Working temperature | Ambient : -40 ~ 65 °C |
Medium : Max. 100℃ | |
Temperature effect | Accuracy at temperature above and below the reference temperature (20℃) will be effected by approximately ±0.4% per 10℃ of full scale |
Pressure connection | Stainless steel (316SS) |
Element | Stainless steel (316SS) |
<100 bar : C type bourdon tube | |
≥100 bar : Helical type bourdon tube | |
Case | 160mm : stainless Steel (304SS) bayonet type |
250mm – Black painted aluminium, solid front | |
Cover | 160mm : stainless Steel (304SS) bayonet type |
250 mm – Black painted aluminium | |
Window | Safety glass |
Movement | Brass |
Dial | 270° mirror band scale White aluminium with black graduations |
Pointer | Black painted aluminium alloy |
Zero adjustment | Internal (160 mm) |
External (250 mm) | |
Process connection | ⅜”, ½” PT, NPT and PF |