DatasheetDynisco SPX4222 / SPX4622 Pressure Transmitters
The Dynisco SPX4222 and SPX4622 Series include variable, smart 2-wire pressure transmitters with 4…20 mA output signal. The devices were specifically developed for use in explosion-hazardous areas and are optionally available with a HART™ interface. This makes them particularly suitable for production plants in the plastics and chemical industries where reliable pressure measurement, high noise immunity and flexible communication are required.
The pressure transmitters are certified according to ATEX II 2 (1) G 100a with intrinsic safety EEx ia IIC T4/T6 and, depending on the version, can also be supplied for use outside explosion-hazardous areas. The 2-wire connection enables simple and cost-effective wiring. At the same time, the robust signal transmission allows use in harsh field environments, even when unshielded connection cables are used.
The SPX4222 and SPX4622 models feature a sensing tip with 1/2″-20 UNF connection thread for installation in standard mounting holes. The sensors are suitable for process temperatures up to 400 °C and are available in pressure ranges from 0…17 bar to 0…2000 bar. Optional integrated replaceable thermocouples or Pt100 elements are available for simultaneous temperature measurement close to the pressure sensing diaphragm.
| Type | Smart 2-wire pressure transmitter with 4…20 mA output |
|---|---|
| Series | Dynisco SPX4222 / SPX4622 Series |
| Models | SPX4222 and SPX4622 |
| Application | Pressure measurement in plastics and chemical plants, optionally for explosion-hazardous areas |
| Output signal | 2-wire 4…20 mA with superimposed digital communication for models with HART™ protocol |
| Optional communication | HART™ interface |
| Pressure ranges | 0…17 bar to 0…2000 bar |
| Accuracy SPX4222 | ±0.25 % F.S. according to BFSL; up to 70 bar ±0.5 % F.S. |
| Accuracy SPX4622 | ±0.50 % F.S. according to BFSL |
| Repeatability | ±0.1 % F.S. |
| Maximum overload | 2 × pressure range; 1000 and 1400 bar ranges max. 1750 bar; 2000 bar range max. 2450 bar |
| Burst pressure | 6 × pressure range, max. 3100 bar |
| Material in contact with media | 15-5 PH stainless steel, material no. 1.4545, standard DyMax™ coated |
| Optional wetted materials | Hastelloy C-276, Inconel 718 |
| Max. process temperature | 400 °C |
| Max. housing operating temperature | Standard and EEx ia IIC up to T1…T4: 85 °C; EEx ia IIC up to T6 versions: 50 °C |
| Compensated temperature range | -18…65 °C |
| Housing zero shift due to temperature change | 0.2 % F.S. / 10 °C |
| Sensitivity shift due to temperature change | SPX4222: 0.2 % F.S. / 10 °C | SPX4622: 0.4 % F.S. / 10 °C |
| Max. diaphragm operating temperature | 400 °C |
| Diaphragm zero shift due to temperature change | SPX4222: 0.2 bar / 10 °C | SPX4622: 0.3 bar / 10 °C |
| Measuring system | 4-arm strain gauge |
| Signal output in fault condition | Failure signal level according to NAMUR NE43: <3.6 mA or >21 mA |
| Range adjustment | Turn-down up to 3:1 for versions with option “B” HART™ protocol |
| Supply voltage without intrinsic safety | 14…36 VDC for SPX4XX2“N” models |
| Supply voltage with intrinsic safety | 16…26 VDC for SPX4XX2“S” models |
| ATEX approval SPX4XX2 “S” | II 2 (1) G ATEX 100a, EEx ia IIC T4/T6 |
| Zero adjustment range | -40 % to +10 % F.S.; -80 % to +20 % F.S. for pressure ranges up to 35 bar |
| Span adjustment range | ±2 % F.S. maximum |
| Zero and span adjustment | For all versions via “ZERO” and “SPAN” push buttons; for versions with option “B” HART™ protocol also selectable via HART™ commands or push buttons |
| Load resistance | 500 Ω at 26 VDC supply voltage; 1000 Ω at 36 VDC supply voltage |
| Process connection | 1/2″-20 UNF connection thread |
| Optional temperature measurement | Integrated replaceable thermocouple or Pt100 element for temperature measurement close to the pressure sensing diaphragm |
| Key features | ATEX option, HART™ communication, high noise immunity, autozero and autocall, variable range adjustment, suitable for field applications |
