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.
As switch contacts magnetic snap-action contacts, reed switches, inductive contacts - for requirements to ATEX - or electronic contacts for triggering a PLC are available.
For further information on the different switch contacts please see data sheet AC 08.01.
Standard version
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 and vacuum ranges
Pressure limitation
Steady: Full scale value
Fluctuating: 0.9 x full scale value
Overpressure 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), 22 mm flats
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
With safety version: With solid baffle wall (Solidfront) and
blow-out back
Window
Laminated safety glass
Bezel ring
Cam ring (bayonet type), stainless steel
Electrical connection
Terminal box
Ingress protection
IP 54 per EN 60529 / IEC 529
Switch contacts
Magnetic snap-action contact model 821
No control unit and no extra 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 effect on the indication accuracy
Fail-safe switching at high switching rates
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 effect on the indication accuracy
Fail-safe switching at high switching rates
Insensitive to corrosion
Up to 3 switch contacts per measuring instrument
Reed switch model 851
No control unit and no extra 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
Switching function
The switching function of the switch is indicated by function index 1, 2 or 3.
Model 8xx.1: Contact makes (clockwise pointer motion)
Model 8xx.2: Contact breaks (clockwise pointer motion)
Models 821.3 and 851.3: Change over; one contact breaks
and one contact makes simultaneously
when pointer reaches set point
For further information please see data sheet AC 08.01, electrical switch contacts
Options
Other process connection
Sealings (model 910.17, see data sheet AC 09.08)
Liquid filling (filling liquid silicone oil M50, ingress protection IP 65)
Overpressure safety: 10 x full scale value, max. 40 bar
Vacuum safe to -1 bar
Max. medium temperature +200 °C
Higher indication accuracy, class 1.0 and 0.6
Open connecting flanges per DIN/ASME from DN 15 to DN 80 (preferred nominal widths DN 25 and 50 or DN 1" and 2"; see data sheet IN 00.10)
Wetted parts lined/coated with special materials such as PTFE, Hastelloy, Monel, nickel, tantalum, titanium, silver (gauges with accuracy class 2.5)
Inductive contacts also in safety version (SN, S1N)
Instruments with special approvals 1)
Pressure switch per VdTÜV code of practice 100
SIL2 approval
DVGW declaration for the use in gas supply systems
DIN/DVGW registration: Pressure switch per EN 1854
Gost standard approval (Russia)
Design approval for connection to hazardous zone 0
1) Specification on request
Dimensions in mm
switchGAUGE model PGS43.100 with switch contact model 821, 831 or 830 E