Applications
* Control and regulation of industrial processes at measuring points with increased overpressure and scale ranges from 0 … 25 mbar
* Monitoring of plants and switching of electric circuits
* For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience
* Process industry: Chemical, petrochemical, power plants, mining, on- and offshore, environmental technology, machine building and general plant construction
Special Features
* High reliability and long service life
* Wide choice of special materials
* Up to 4 switch contacts per instrument
Also available with liquid filling for high dynamic pressure loads or vibrations
* Instruments with inductive contacts for use in hazardous areas
* Instruments with contacts for PLC applications
Specifications
Standard:
EN 837-3: Diaphragm and capsule pressure gauges
DIN 16085: Pressure gauges with electrical limit contact devices
Other version:
Oil- and grease-free
Oil- and grease-free for oxygen
Silicone-free
Per NACE 1) MR0175 / ISO 15156, use in H₂S-containing environments in oil and gas production
Per NACE 1) MR0103 / ISO 17945, metals resistant to hydrogen sulphide stress cracking
With pre-volume deflagration flame arrester 2) for mounting to zone 0 (EPL Ga); model 910.21, see data sheet AC 91.02
Diaphragm pressure gauge with output signal, models PGT43.100, PGT43.160; see data sheet PV 14.03
Diaphragm pressure gauge, high overload safety; models 43x.x6, PGx43HP, see data sheets PM 04.07, PV 24.07 and PV 14.07
With flushing bore on the open connecting flange
Nominal size (NS): Ø 100 mm [4"], Ø 160 mm [6"]
Window: Laminated safety glass, Polycarbonate
Case Design:
Safety level “S1” per EN 837-1: With blow-out device
Safety level “S3” per EN 837-1: With solid baffle wall and blow-out back
Case Material: Stainless steel 1.4301 (304), Stainless steel 1.4571 (316Ti)
Case filling: Without, Silicone oil
Movement: Stainless steel
Type of measuring element: Diaphragm element
Materials (wetted):
Diaphragm element: Span ≤ 0.25 bar - Stainless steel 316L
Span ≥ 0.4 bar - NiCr alloy (Inconel)
Coating / Lining: Without, PTFE, Hastelloy, Monel, Tantalum, Gold (only for diaphragm element) Further materials on request
Accuracy class: 1.6, 2.5
Temperature error: On deviation from the reference conditions at the measuring system: ≤ ±0.8 %/10 K of respective full scale value
Switch hysteresis: Depending on the type of contact used, see from page 7
Reference conditions: Ambient temperature +20 °C [+68 °F]
Unit: bar, psi, mbar, kg/cm², MPa, kPa Other units on request
Overload safety:
5 x full scale value, max. 40 bar
10 x full scale value, max. 40 bar
Vacuum resistance: Without, Vacuum-resistant to -1 bar
Dial Scale layout: Single scale, Dual scale
Dial Scale colour:
Single scale: Black
Dual scale: Black/red
Dial Material: Aluminium
Instrument pointer: Aluminium, black
Set pointer →See type of contact, from page 7
Process connection
Standard: EN 837, ANSI / ASME B1.20.1, ASME B16.5, EN 1092-1, form B
Size:
EN 837: G 1/2 B, M20 x 1.5
ANSI / ASME B1.20.1: 1/2 NPT
ASME B16.5: Open connecting flange 1" class 150, RF, Open connecting flange 2" class 150, RF, Open connecting flange 1" class 300, RF
EN 1092-1, form B: Open connecting flange DN 25 PN 40, Open connecting flange DN 50 PN 40
Materials (wetted)
Diaphragm element: Span ≤ 0.25 bar - Stainless steel 316L
Span ≥ 0.4 bar - NiCr alloy (Inconel)
Process connection with lower measuring flange: Stainless steel 316L
Coating / Lining: Without, PTFE, Hastelloy, Monel, Tantalum, Gold (only for diaphragm element)
Seal: FPM/FKM, PTFE
Output signal
Type of contact:
Magnetic snap-action contact, model 821 (→ See page 8)
Inductive contact, model 831 (→ See page 9)
Electronic contact, model 830 E (→ See page 10)
Reed switch, model 851 (→ See page 11)
Switch technology
Magnetic snap-action contact, model 821:
No control unit and no supply voltage required
Direct switching up to 250 V, 1 A
Inductive contact, model 831:
Suitable for use in hazardous areas with corresponding control unit (model 904. xx)
Long service life due to non-contact switching
Low influence on the indication accuracy
Fail-safe switching at high switching frequency
Insensitive to corrosion
Also available in safety version
Electronic contact, model 830 E:
For direct triggering of a programmable logic controller (PLC)
Long service life due to non-contact switching
Low influence on the indication accuracy
Fail-safe switching at high switching frequency
Insensitive to corrosion
Reed switch, model 851:
No control unit and no supply voltage required
Direct switching up to 250 V, 1 A
For direct triggering of a programmable logic controller (PLC)
Wear-free, as non-contact
Contact setting:
Contact(s) adjustable, adjustment key attached to cable socket
Contact(s) fixed, without adjustment lock 1)
Adjustment lock sealable (tamper-proof)
Adjustment lock sealed (tamper-proof) 1)
Captive adjustment key with the adjustment lock connected
