Model DSS26M
Pressure gauge to EN 837-1 with a mounted diaphragm seal on a flange connection with internal diaphragm, NS 100, class 1.0, 0-6 to 0-40 bar, to EN 1092-1 or ASME B16.5 flanges.
Prices on request. Contact us for availability and quotations.
The WIKA DSS26M pairs a Bourdon tube pressure gauge to EN 837-1 with a diaphragm seal on a flange connection, for aggressive, highly viscous, crystallising or hot media in chemical and petrochemical process plant. The diaphragm keeps the medium away from the measuring element while the system fill fluid transmits pressure to the Bourdon tube.
The seal in this model uses an internal diaphragm set in a diaphragm bed within the flange, as distinct from the flush-diaphragm DSS27M. Flange connections follow EN 1092-1 with a form B1 sealing face, or ASME B16.5 with an RF 125 to 250 AA finish, in the sizes given in the datasheet - DN 25 PN 10/40 for EN, and 1/2" and 1" class 150 or 300 for ASME.
Nominal size is 100 mm at accuracy class 1.0. Scale ranges are 0 ... 6, 0 ... 10, 0 ... 16, 0 ... 25 and 0 ... 40 bar, with vacuum and compound ranges of -1 ... +5, -1 ... +9 and -1 ... +10 bar. The wetted diaphragm is stainless steel 1.4435 (316L) and the diaphragm seal body 1.4404 (316L); the system fill fluid is silicone oil KN 2 for general applications.
Permissible medium temperature is -10 to +150 °C, ambient 10 to 40 °C, and ingress protection is IP65. When ordering, specify the scale range, the flange standard, nominal diameter and pressure class, and confirm the flange facing the mating equipment requires.
| Design | Pressure gauge with Bourdon tube per EN 837-1, diaphragm seal with flange connection, internal diaphragm |
|---|---|
| Nominal Size and Accuracy | NS 100, accuracy class 1.0 |
| Scale Range | 0 ... 6, 0 ... 10, 0 ... 16, 0 ... 25 and 0 ... 40 bar [0 ... 100 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, sealing face form B1, DN 25 PN 10/40; or flange per ASME B16.5, sealing face RF 125 ... 250 AA, 1/2" and 1" 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 |
