User guide
8-24
Pressure switches
http://products.ecc.emea.honeywell.com/europe
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For flow monitoring and differential pressure control of steam, gas, hot/cold water and automatic
checking of filter plant.
Differential pressure switch for liquid, gas (DDCM)
Kind of pressure differential pressure, relative
Pressure connection internal thread G1/4
Electrical connection Plug DIN 43650
Protection class IP54
Housing material rugged housing of seawater resistant aluminium die casting GD Al
Si 12
Media temp. -25 ... 70
o
C
Media temp. limit temperatures up to 85
o
C are allowable for short periods. Higher
temperatures are possible, provided that the limit is safeguarded
by suitable measures (e.g. water tube trap, see Accessories for
Pressure Switches / Transmitters)
Ambient temperature -25 ... 70
o
C
Ambient temp. limit at temperatures below 0
o
C, ensure that no water condensation
can arise in the sensor and in the switching device
Switch function/capacity SPDT Microswitch; capacity 5 A inductive, 8 A resistive
Optional functions add the type numbers below to the listed type numbers for extra
functionality as described
• -301: terminal connection housing, IP65
• -205: maximum limiter with reclosing lock-out, interlocking
with increasing pressure
• -206: Minimum limiter with reclosing lock-out, interlocking with
falling pressure
• -307: two microswitches, switching in parallel or in succession,
fixed switching interval, terminal connection case, IP65 (with
the exception of DDCM252, 662, 1602, 6002)
• -217: two microswitches, 1 plug, switching in succession,
adjustable switching interval (with the exception of DDCM252,
662, 1602, 6002)
• -213: gold-plated contacts, switching capacity: max. 24 Vdc,
100 mA, min. 5 Vdc, 2 mA. And others not available with
adjustable switching difference.
• -351: protection class IP65 and switching housing with surface
protection (chemical version)
• -513: gold-plated contacts, switching differential permanent,
IP65, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2
mA; suitable isolating switching amplifier, degree of protection
EEx-i
Pressure adjustment range Switching differential Max. pressure Sensing element material
Type
bar bar bar
0,004 ... 0,025 0,002 0,5 Perbunan + Aluminium
DDCM252
0,01 ... 0,06 0,015 1,5 Perbunan + Aluminium
DDCM662
0,02 ... 0,16 0,02 3 Perbunan + Aluminium
DDCM1602
0,1 ... 0,6 0,035 3 Perbunan + Aluminium
DDCM6002
-0,1 ... 0,4 0,15 15 1.4305 + 1.4571
DDCM014
0,2 ... 1,6 0,13 15 1.4305 + 1.4571
DDCM1
1 ... 4 0,2 25 1.4305 + 1.4571
DDCM4
0,5 ... 6 0,2 15 1.4305 + 1.4571
DDCM6
3 ... 16 0,6 25 1.4305 + 1.4571
DDCM16
Syphon for high temperature, steel, U-shape (for more accessories, see Accessories
for Pressure Switches / Transmitters)
U430B