FISCHER DS 11, User Manual, Page: 6 / 16

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11 Technical data
General points
Admissible ambient temperature -
10 … +70 °C
Admissible media temperature -
10 … +70 °C
Admissible storage temperature -
15 … +75 °C
Enclosure protection class IP55 acc. to DIN EN 60529
Weight
1.2 kg (Pressure chamber in aluminium)
3.5 kg (Pressure chamber in stainless steel 1.4305)
Measuring system
Measuring range ≤ 16 bar Pressure spring measuring diaphragm system made of fabric-reinforced elastomers
Measuring range 0 … 25 bar Plate spring measuring system, plate spring made of DURATHERM
©
Measuring range
0 … 400 mbar to 0 … 25 bar (see order code)
Rated pressure of the
measuring system
25 bar
Max. static operating pressure depending on measuring range (see order code)
Max. pressure load on-sided over-pressure-proof up to the rated pressure of the measuring system
resistance to under-pressure on the (+) and (-) side
Measurement accuracy ± 2.5% of the upper range value
Zero-point adjustment Arranged in the front panel of the scale
Switch contacts
Contact output 1 or 2 micro-switches with 1-pin changeover contact.
Switch point setting
can be set to reference scales from outside
Smallest settable value approx. 5% of the end value of the measuring range.
Switch hysteresis approx. 2.5% of the upper range value
Load data/contact AC DC
U
max
250V 30V
I
max
5A 0.4A
P
max
250 VA 10 W
Ports
Process connection
Inner thread G 1/4
Connecting shank G¼ DIN EN 837
Cutting ring connections for 6, 8, 10 mm (brass, steel galvanized or stainless steel)
electr. connection Fixed wire numbered cables
Cable connection socket
7-pole plug connection
Materials
Pressure chamber Aluminium GkAlSi10(Mg), painted black
Aluminium GkAlSi10(Mg) with HART-COAT©-surface protection
Chromium nickel steel 1.4305
Measuring diaphragm
Measuring diaphragm and seals made of NBR or Viton©
Plate spring made of DURATHERM© NiCrCo alloy
Inner parts in contact with
mediums
Stainless steel 1.4310, 1.4305
Hood Makrolon
Mounting
Installation position vertical
Wall mounting - three mounting feet
Control panel assembly - control panel installation set DZ11 Ø132mm
Pipe connection, pressure connections acc. to attached symbols
- via screwed-in cutting or clamp screw connections
- via screwed-in connection shanks acc. to DIN EN 837
for nipple connections acc. to DIN 16284
Approvals
type testing according to the regulations of Det Norske Veritas and the Germanischen Lloyd,
test symbol DNV-GL
EAC Declaration of conformity
EN 61508 2001 Functional safety of safety-related electrical/electronic/
programmable electronic systems requirements for SIL2