WIKA DPGS43.100 switchGAUG
带开关触点的
不锈钢全焊接差压表
Differential pressure gauge with switch contacts
All welded construction
Models DPGS43.1x0, stainless steel version
Differential pressure gauge model DPGS43.100 with switch
contact model 831.2
Applications
Control and regulation of process values
Monitoring of plants and switching of electric circuits
For measuring points with increased differential overpressure
Monitoring and control of pumps
Filter monitoring
Level measurement in closed tanks
Special features
Differential pressure measuring ranges from 0 … 16 mbar
High working pressure (static pressure) and high overpressure safety up to 40 bar
Also available with liquid-filled case for high dynamic pressure loads or vibrations
Gauges with inductive contacts for use in hazardous areas with ATEX approval
Gauges with electronic contact for PLC applications
Description
Wherever the process pressure has to be indicated locally, and, at the same time, circuits are to be made or broken, the model DPGS43.1x0 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.
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
Design
Lower mount pressure connections,
highly corrosion-resistant all-metal construction,
measuring cell secured against unauthorised intervention,
pressure connection location adjustable to mounting conditions,
WIKA trade pattern DT - GM 86 08 176
Nominal size in mm
100, 160
Accuracy class
1.6 (2.5 at 0 ... 16 mbar and 0 ... 25 mbar)
Scale ranges
0 ... 16 mbar to 0 ... 25 bar
Scale range 0 ... 16 mbar: Scale length approx. 180 ? °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
see table on page 3
Max. working pressure (static pressure)
see table on page 3
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. ±0.5 %/10 K of full scale value
Measuring chamber with process connection (wetted)
Stainless steel 1.4571,
lower mount, 2 x G ¼ female
Pressure elements (wetted)
≤ 0.25 bar: Stainless steel 1.4571
> 0.25 bar: NiCrCo-alloy (Duratherm)
Sealing bellows (wetted)
Stainless steel 1.4571
Venting of the media chambers (wetted)
Stainless steel 1.4571 for scale ranges ≤ 0.25 bar
(option for scale ranges ≥ 0.4 bar!)
Movement
Stainless steel
Dial
Aluminium, white, black lettering
Pointer
Aluminium, black
Case
Stainless steel, with blow-out device
Window
Laminated safety glass
Bezel ring
Cam ring (bayonet type), stainless steel
Mounting
according to affixed symbols
⊕ high pressure,
? low pressure
Mounting by means of:
Rigid measuring lines
Mounting holes in measuring flange
Panel mounting flange (option)
Mounting bracket for wall or pipe mounting (option)
Electrical connection
Terminal box
Ingress protection
IP 54 per EN 60529 / lEC 529 (with liquid filling IP 65)
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 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 influence 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 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
Liquid filling
Sealings (model 910.17, see data sheet AC 09.08)
Safety version
Higher max. working pressure (static pressure) and higher overpressure safety (see table)
Indication accuracy better than class 1.6
Venting of the media chambers (wetted) for scale ranges ≥ 0.4 bar
Zero adjustment appliance
Lateral connection location (right, left, front or back)
Other threaded pressure connections, female or male
Combined display of differential pressure and working pressure
Medium temperature > 100 °C
Permissible ambient temperature -40 ... +60 °C (silicone oil filling)
Mounting bracket for wall or pipe mounting
Panel mounting flange
Pressure compensating valve (data sheet AC 09.11)
Inductive contacts also in safety version (SN, S1N)
Max. working pressure / Overpressure safety
1) Accuracy class 2.5
Dimensions in mm
switchGAUGE model DPGS43.100 with switch contact model 821, 831 or 830 E
switchGAUGE model DPGS43.160 with switch contact model 821, 831 or 830 E
switchGAUGE model DPGS43.100 with switch contact model 851.3 or 851.33 
switchGAUGE model DPGS43.160 with switch contact model 851.3 or 851.33