This high-quality Bourdon tube pressure gauge has been designed especially for increased safety requirements within the process industry. The use of high-quality stainless steel materials and the robust design are geared to applications in the chemical and process engineering industries. Thus the instrument is suitable for liquid and gaseous media, also in aggressive environments.

Applications: 
■Increased safety requirements for personal protection 
■ With liquid-filled case for applications with high dynamic pressure loads or vibrations (model 233.30) 
■ For gaseous and liquid aggressive media that are not highly viscous or crystallising, also in aggressive environments 
■ Oil and gas industry, chemical and petrochemical industries, power engineering and also water and wastewater technology

Parameters

Nominal size(mm):     63, 100, 160

Accuracy class:          NS 63: 1.6             NS 100, 160: 1.0

Scale ranges              NS 63: 0 ... 1 to 0 ... 1,000 bar

                                   NS 100: 0 ... 0.6 to 0 ... 1,000 bar

                                   NS 160: 0 ... 0.6 to 0 ... 1,600 bar

                                   or all other equivalent vacuum or combined pressure and vacuum ranges

Pressure limitation      NS 63:  Steady: 3/4 x full scale value,

                                                Fluctuating: 2/3 x full scale value,

                                                Short time: Full scale value

                                    NS 100, 160:  Steady: Full scale value,

                                                           Fluctuating: 0.9 x full scale value,

                                                           Short time: 1.3 x full scale value

Permissible temperature

Ambient: -40 … +60 °C with unfilled instruments -20 … +60 °C with instruments with glycerine filling

Medium: +200 °C maximum with unfilled instruments, +100 °C maximum with filled instruments

Temperature effect

When the temperature of the measuring system deviates from the reference temperature (+20 °C): max. ±0.4 %/10 K of full scale value.

Ingress protection per IEC/EN 60529 IP65 (instruments with back mount connection: IP54)

Process connection Stainless steel 316L (NS 63: 1.4571)

Lower mount (radial) or lower back mount

NS 63: G ¼ B (male), SW 14 NS 100, 160: G ½ B (male), SW 22

Pressure element Stainless steel 316L C-type or helical type

Movement Stainless steel

Dial Aluminium, white, black lettering NS 63 with pointer stop pin

Pointer Aluminium, black

Case Stainless steel, with solid baffle wall (Solidfront) and blowout back, scale ranges ≤ 0 ... 16 bar (lower mount) with compensating valve to vent case

Window Laminated safety glass (NS 63: Polcarbonate)

Ring Bayonet ring, stainless steel

Filling liquid (for model 233.30) Glycerine (glycerine-water mixture for scale ranges ≤ 0 ... 2.5 bar)