Description
Diaphragm pressure gauge with switch contacts model PGS43.100
Wherever the process pressure has to be indicated locally, and, at the same time, circuits are to be made or broken, the model PGS43.1×0 switchGAUGE can be used.
Switch contacts (electrical alarm contacts) make or break an electric control circuit dependent upon the position of the instrument pointer.
The switch contacts are adjustable over the full extent of the scale range (see DIN 16085), and are mounted predominantly below the dial, though also partly on top of the dial.
The instrument pointer (actual value pointer) moves freely across the entire scale range, independent of the setting.
The set pointer can be adjusted using a removable adjustment key in the window.
Switch contacts consisting of several contacts can also be set to a single set point. Contact actuation is made when the actual value pointer travels beyond or below the desired set point.
The pressure gauge is manufactured in accordance with DIN 16085 and fulfils all requirements of the relevant standards (EN 837-3) and regulations for the on-site display of the working pressure of pressure vessels.
Nominal size in mm
- 100, 160
Accuracy class
- 1.6
Scale ranges
0 … 25 mbar to 0 … 250 mbar (flange Ø 160 mm)
0 … 400 mbar to 0 … 25 bar (flange Ø 100 mm)
or all other equivalent vacuum or combined pressure andvacuum ranges
Pressure limitation
- Steady: Full scale value
- Fluctuating: 0.9 x full scale value
Overload safety
- 5 x full scale value, however max. 40 bar
Permissible temperature
- Ambient: -20 … +60 °C
- Medium: +100 °C maximum
Temperature effect
When the temperature of the measuring system deviates from the reference temperature (+20 °C): max. ±0.8 %/10 K of full scale value
Process connection with lower measuring flange
- Stainless steel 316L, G ½ B (male), SW 22
Pressure element
- ≤ 0.25 bar: Stainless steel 316L
- > 0.25 bar: NiCr-alloy (Inconel)
Pressure chamber sealing
FPM/FKM
Movement
Stainless steel
Dial
Aluminium, white, black lettering
Pointer
- Instrument pointer: Aluminium, black
- Set pointer: Red
Case with upper measuring flange
Stainless steel, with blow-out device in case back
Safety version option: With solid baffle wall (Solidfront) and blow-out back
Switch contacts
Magnetic snap-action contact model 821
- No control unit and no power supply required
- Direct switching up to 250 V, 1 A
- Up to 4 switch contacts per measuring instrument
Inductive contact model 831
- Long service life due to non-contact sensor
- Additional control unit required (model 904.xx)
- With corresponding control unit suitable for use in zone 1 /21 (2 GD) hazardous areas
- Low influence on the indication accuracy
- Fail-safe switching at high switching frequency
- Insensitive to corrosion
- Up to 3 switch contacts per measuring instrument
Electronic contact model 830 E
- For direct triggering of a programmable logic controller (PLC)
- 2-wire system (option: 3-wire system)
- Long service life due to non-contact sensor
- Low influence on the indication accuracy
- Fail-safe switching at high switching frequency
- Insensitive to corrosion
- Up to 3 switch contacts per measuring instrument
Reed switch model 851
- No control unit and no power supply required
- Direct switching up to 250 V, 1 A
- Also suitable for direct triggering of a programmable logic controller (PLC)
- Free from wear as without contact
- Up to two change-over contacts per measuring instrument
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