Model DSS27M
Pressure gauge to EN 837-1 with a mounted diaphragm seal on a flange connection with flush welded diaphragm, NS 100, class 1.0, 0-1 to 0-40 bar, to EN 1092-1 or ASME B16.5 flanges.
Prices on request. Contact us for availability and quotations.
The WIKA DSS27M is a Bourdon tube pressure gauge to EN 837-1 mounted on a diaphragm seal with a flange connection and a flush welded diaphragm. It is used where the medium is aggressive, highly viscous, crystallising, corrosive, toxic or hot, and where a recess in the wetted face would trap product.
The flush diaphragm is the difference from the internal-diaphragm DSS26M: the diaphragm sits level with the flange face, leaving no dead space in which medium can accumulate or solidify. The all-welded construction gives a permanently sealed assembly, and the system fill fluid transmits pressure from the diaphragm to the Bourdon tube.
Nominal size is 100 mm at accuracy class 1.0. Scale ranges are 0 ... 1 to 0 ... 40 bar (0 ... 15 to 0 ... 600 psi) with vacuum and compound ranges of -1 ... +5, -1 ... +9 and -1 ... +10 bar. The wetted diaphragm is stainless steel 1.4435 (316L), the diaphragm seal body 1.4404 (316L), and the system fill fluid silicone oil KN 2.
Flange connections follow EN 1092-1 form B1 in DN 50 PN 10/40 and DN 80 PN 10/16 or 25/40, or ASME B16.5 with RF 125 to 250 AA facing in 2" and 3" class 150 and 300. Permissible medium temperature is -10 to 150 °C and ingress protection is IP65. When ordering, specify scale range, flange standard, nominal diameter and pressure class.
| Design | Pressure gauge with Bourdon tube per EN 837-1, diaphragm seal with flange connection, flush diaphragm |
|---|---|
| Nominal Size and Accuracy | NS 100, accuracy class 1.0 |
| Scale Range | 0 ... 1 to 0 ... 40 bar [0 ... 15 to 0 ... 600 psi]; vacuum and +/- ranges -1 ... +5, -1 ... +9 and -1 ... +10 bar |
| Wetted Materials | Diaphragm stainless steel 1.4435 [316L]; diaphragm seal stainless steel 1.4404 [316L] |
| Process Connection | Flange per EN 1092-1, form B1: DN 50 PN 10/40, DN 80 PN 10/16 and 25/40. Flange per ASME B16.5, RF 125 ... 250 AA: 2" and 3", class 150 and 300 |
| Case and Window | Case stainless steel 1.4301 [304]; window laminated safety glass; dial and pointer aluminium |
| System Fill Fluid | Silicone oil KN 2 for general applications |
| Level of Cleanliness | Oil and grease free per ASTM G93-03 level F and ISO 15001 (< 1,000 mg/m2) |
| Permissible Temperature | Medium -10 ... 150 °C [14 ... 302 °F]; ambient 10 ... 40 °C; storage 10 ... 60 °C |
| Ingress Protection | IP65 per IEC/EN 60529 |
