Tiếng Việt
732.31 & 732.51
WIKA 732.31 & 732.51 – Đ (Differential Pressure Gauge) loại all-metal media chamber hãng WIKA/Germany
Application
- For gaseous and liquid aggressive media that are not highly viscous or crystallising, also in aggressive environments
- Pump monitoring and control
- Filter monitoring
- Level measurement on closed vessels
Product features
- Differential pressure measuring ranges from 0 … 16 mbar [0.23 psi]
- High working pressure (static pressure) up to 40 bar [580 psi]
- High overload safety up to 40 bar [580 psi]
- Model 73x.31: Case with safety level “S3” per EN 837
- All-welded media chamber
WIKA 732.31 & 732.51
| Design | Differential pressure gauges per DIN 16003, lower mount process connections, highly
corrosion-resistant all-metal design, instrument protected against unauthorised intervention, position of process connection adjustable to mounting conditions ■ Models 733.31 and 733.51: Version with liquid filling ■ Model 73x.31: Case with safety level “S3” per EN 837: With solid baffle wall and blowout back ■ Version with switch contacts 1) ■ Version with output signal 2) |
| Nominal size in mm | 100, 160 |
| Accuracy class | 1.6
1.0 2.5 |
| Scale ranges | 0 … 16 mbar to 0 … 25 bar [0 … 0.23 to 0 … 363 psi] |
| Scale | ■ Single scale
■ Dual scale ■ Special scale (e.g. linear pressure or square root incrementation) Scale angle approx. 180° for scale range 0 … 16 mbar [0 … 0.23 psi], with all other scale ranges the scale angle is 270°. |
| Zero point setting | ■ External setting, for instruments with liquid filling 3)
■ Setting by means of adjustable pointer, for instruments without liquid filling |
| Pressure limitation | Steady: Full scale value
Fluctuating: 0.9 x full scale value |
| Static pressure influence | ■ ±0.3 %/1 bar [14.5 psi] for scale ranges 0 …16 to 0 … 250 mbar [0 … 0.2 to 0 … 3.63 psi]
■ ±0.04 %/1 bar [14.5 psi] for scale ranges 0 … 400 mbar to 0 … 25 bar [0 … 5.8 to 0 … 363 psi] |
| Connection location | ■ Lower mount (radial)
■ Other connection location on request |
| Process connection | ■ 2 x G ¼ female thread
■ 2 x G ½ B ■ 2 x G 1/NPT male thread |
| Permissible temperature | Medium: ■ -20 … +100 °C [-4 … +212 °F]
■ -20 … +120 °C [-4 … +248 °F] ■ -20 … +150 °C [-4 … +284 °F] Ambient: ■ -20 … +60 °C [-4 … +140 °F] for instruments without liquid filling ■ -40 … +60 °C [-40 … +140 °F] with silicone oil filling (only for models 733.31 and 733.51) |
| Temperature effect | When the temperature of the measuring system deviates from the reference temperature (+20 °C [68 °F]): max. ±0.5 %/10 K of full scale value |
Materials (wetted) |
|
| Media chambers with process connection | Stainless steel 1.4571 |
| Pressure element | ■ ≤ 0.25 bar [3.63 psi]: Stainless steel 1.4571
■ > 0.25 bar [3.63 psi]: NiCr alloy (Inconel) |
| Bellows | Stainless steel 1.4571 |
| Venting of the media chambers | Stainless steel 1.4571
For scale ranges ≤ 0.25 bar [3.63 psi], venting of the media chambers is always provided. For scale ranges > 0.25 bar [3.63 psi], venting of the media chambers can be ordered. |
| Materials (non-wetted) | |
| Case | Stainless steel, safety level “S1” per EN 837: With blow-out device |
| Movement, bayonet ring | Stainless steel |
| Dial | Aluminium, white, black lettering |
| Instrument pointer | ■ Model 732.51: Adjustable pointer, aluminium, black
■ Model 733.51: Standard pointer, aluminium, black |
| Window | Laminated safety glass |
| Ingress protection per IEC/EN 60529 | IP54
IP65 (with liquid filling) |
| Mounting | Mounting by means of:
■ Rigid measuring lines ■ Mounting holes with measuring flange |
