P256 Series_Euro gauge Safety pattern type overpressure protection pressure gauge
P256 Series
Service intended
P256 series are made with a solid plate wall and a blow-out back. Its stainless steel case and cover have a good appearance. It has the excellent proof against corrosion and chemical attack. Suitable for protection against damage to the measuring element when high overpressure is applied to the gauge instantaneously. Max overpressure is up to 4 times of measuring range.
| Nominal diameter | 100 and 160 mm |
| Accuracy | ±1.0 % of measuring range |
| Scale range (MPa, kPa, bar) | -0.1 ~ 0 to 0 ~ 4 MPa |
| Working pressure | Steady : 100 % of full scale Over range protection : 4 times the measuring range |
| Working temperature | Ambient : -40 ~ 65 ℃ -20 ~ 65 ℃ (With glycerin filling) -40 ~ 65 ℃ (With silicone filling) Fluid : Max. 200 ℃ Max. 100 °C (With glycerin filling) Max. 100 ℃ (With silicone filling) |
| Degree of protection | EN60529/IEC529/IP67 |
| Temperature effect | Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately ±0.4 % per 10 ℃ of full scale * NOTE : P256 series is not applied with diaphragm seal. |
Standard features
| Pressure connection | Stainless steel (316SS) |
| Element | Stainless steel (316SS) |
| Case | Stainless steel (304SS) |
| Cover | Stainless steel (304SS) Bayonet type |
| Blowout protection | Solid front Blow-out back |
| Window | Laminated safety glass |
| Movement | Stainless steel |
| Dial | White aluminium with black graduations overpressure range indicated by a black sector |
| Pointer | Black painted aluminium alloy |
| Process connection | ½”, ⅜” PT, NPT and PF |
| Option | Zero adjustable pointer Pressure connection and element : Monel Case and cover material : 316SS |
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