Bourdon Tube Pressure Gauge

Description

New measuring principle
• non-contact device
• low moment of inertia, only a slight increased weight
of the pointer by the electronic transponder
• no mechanical drag as in existing limit switches

Robustness and reliability
• no mechanical components and therefore no mechanical wear
in the e-Gauge®
• tamper proof switch points – factory set

Technical Data e-Gauge®

Output signal
4…20 mA (3 wire)

Nominal rating
8…28 VDC, max. 50 mA, reverse polarity protection

Load impedence [Ω]
(UB-8 V) / 0.02 A

Accuracy of the output signal
± 1.0 % of full scale value

Repeatability
< ±0.2 % of full scale value

Resolution
12 bit

Temperature ranges for e-Gauge with pressure gauge
Storing temperature: -40 °C…+70 °C (-40 °F…+158 °F)
-20 °C…+70 °C (-4 °F…+158 °F)
for glycerine filling

Ambient temperature: -30 °C…+60 °C (-22 °F…+140 °F)
-20 °C…+60 °C (-4 °F…+140 °F)
for glycerine filling

Temperature influence
0.1% of full scale value / 10K
in design temperature range: 0…50 °C (32…122°F)

Switching outputs
2 NPN-outputs (Open Collector), short-circuit proof

Switching function
Opening or closing circuit
Please quote in order

Limit values
coloured marks at the limit values on the dial
breaking contact: red
making contact: green
Please quote in order
Both limit values of the e-Gauge® can be set at the same point.

Switching hysteresis
1% of span

Switching capacity
max. 28 VDC, max. 50 mA

Response time
0.1s default

Electrical connection
1.5 m cable, not insulated wire ends, 8xAWG24

EMC
EN 61326:2006

CE mark
The instruments are CE-marked

Electrical Connection

1) green / yellow (DATA & CLOCK) do not connect –
factory use only.

See page 3 for technical details of the pressure gauge

Case Configurations, Code Letters, Dimensional Data and Weights, Blow-out Device

Standard Versions Bourdon Tube Pressure Gauge

Information on general and metrological features (load limits, temperature limitations) and standard pressure ranges / scale
divisions of bourdon tube model RCh100/160 and RChG 100/160 can be found on general information leaflet 1000. Detailed
descriptons can be found on data sheet 1201.

Technicel Data Bourdon Tube Pressure Gauge

Accuracy (EN 837-1)
Class 1.0

Case
Bayonet ring, 1.4301 (304 stainless steel)

Case Protection Type (EN 60 529 / IEC 529)
IP 54
IP 55 for model RChG

Blow-out Device
Model RCh Blow-out plug in the back of the case, 1″ (Ø 25mm)

Model RChG 100 Blow-out plug in the back of the case,11⁄2″ (Ø 40mm)

Model RChG 160 Blow-out screw fitting at the top of the case

Case Ventilation
Model RChG 100 without ventilation, but with internal pressure
compensation by pressure equalizing membrane. Model RChG 160
by blow-out screw fitting.

Case Filling
for model RChG: glycerine

Nominal Case Size
100 (mm) (4″), 160 (mm) (6″)

Wetted Parts
Type –3: Connection: 1.4571 (316 stainless steel)

Bourdon tube: 1.4571 (316 stainless steel), argon arc welding, < 40 bar (600 psi) c-form, > 60 bar (800 psi) helical, 1,600 bar (20,000 psi) NiFe-alloy, helical

Type –1: Connection: brass

Bourdon tube: < 40 bar (600 psi) = bronze, c-form, soft-soldered,

> 60 bar (800 psi)= 1.4571 (316 stainless steel), silver brazed, helical

Case Configuration
Connection: screwed

Position of the connection: bottom connection, optional lower back connection (r)

Mounting device: without, optional back flange for surface mounting (Rh), see page 2

Pressure Ranges (EN 837-1)
0-0.6 bar (0-10 psi) to 0-1,600 bar (0-20,000 psi) for type –3
0-0.6 bar (0-10 psi) to 0-1,000 bar (0-15,000 psi) for type –1

Process Connection
G 1⁄2 B (1⁄2″ BSP)

Window
Polycarbonate (PC)

Movement
Stainless steel for type –3
Brass / German silver for type –1

Dial
Aluminum, black figures, white background

Pointer
Aluminum, black

Reference Temperature
+ 20°C (68 °F)
If the operating temperatures of the measuring system (measuring unit and movement) deviate from the reference temperature, ad-
ditional deviations of the indication could occur. According to EN 837-1 these can be up to 0.4 % of the span per 10 K.

Safety Category according to EN 837-1
NCS 100: S1 pressure gauges with blow-out device

Options

see page 4

Accessory

Chemical seals: see catalogue-heading 7
Other accessory : see catalogue-heading 11

Options: e-Gauge®