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Description
Differential pressure switch / differential pressure controller
PREMASREG® DS
The PREMASREG® DS-2 mechanical differential pressure switch/monitor with 4-hole plastic base ring is used for monitoring above-atmospheric, differential and below-atmospheric pressure of clean air, gaseous, non-aggressive media in air ducts, air intake or exhaust devices. It can serve as a flow monitor, differential pressure governor, pressure controller for flow monitoring of electric heating registers as well as monitor for V-belts and filters, as an air pressure deficiency protection monitor for ventilators, dampers, or as a limit value controller. Switchpoint adjustment is done using an internal precision scale. The device is factory-calibrated.
The DS-2 differential pressure sensor device is supplied including our ASD-06 connection set (2 m connection hose, two pressure connection nipples, screws).
Technical details
Mounting
with mounting ring
Max. pressure
5000 Pa (50 mbar)
Pressure range
high adjustment accuracy due to individual laser-etched scale
for each switch
for each switch
Pressure range (adjustable)
100…1000 Pa (1.0...10.0 mbar)
Switching capacity (Contact load)
5 (0.8) A, 250 V AC
4 (0.7) A, 30 V DC
4 (0.7) A, 30 V DC
Contact
single-pole potential-free changeover contact,
multi-layer contact, gold-plated (DDC compatible)
multi-layer contact, gold-plated (DDC compatible)
Media temperature
–30 ...+85 °C
Operating Difference approx.
0.4 mbar ± 15 %
Pressure connection
P1 (+) for higher pressure
P2 (–) for lower pressure
Ø 6.2 mm (nipples)
P2 (–) for lower pressure
Ø 6.2 mm (nipples)
Measuring range pressure
100...1000Pa
Electrical connection
0.14 - 1.5 mm2,
via terminal screws on circuit board
via terminal screws on circuit board
Housing
base: material PC (10 % GF),
colour light grey (similar to RAL 7035),
snap-on lid: material PC, transparent,
cable gland PG 11 with strain relief
colour light grey (similar to RAL 7035),
snap-on lid: material PC, transparent,
cable gland PG 11 with strain relief
Membrane
silicone, LSR (Liquid Silicon Rubber,
tempered at +200 °C, non-outgassing, LABS-free,
no emission of varnish-adhesion inhibiting substances),
long-term stability of switching points
due to trapezoidal bead membranes
tempered at +200 °C, non-outgassing, LABS-free,
no emission of varnish-adhesion inhibiting substances),
long-term stability of switching points
due to trapezoidal bead membranes
Humidity
< 90 % r. H., non-precipitating air
Mounting
by 4-hole base ring, plastic
(included in the scope of delivery),
recommended mounting position:
vertical (pressure connections downward) – factory setting,
horizontal (cap up/ down)
(included in the scope of delivery),
recommended mounting position:
vertical (pressure connections downward) – factory setting,
horizontal (cap up/ down)
Protection class
II (according to EN 60 730)
Protection type
IP 54 with top cover (according to EN 60529)
Standards
CE conformity,
low-voltage directive 2014/ 35/ EU
low-voltage directive 2014/ 35/ EU
Tests
DVGW (according to DIN 1854),
VDE 0630, EN 61058,
directive on gas devices 2009/ 142/ EU,
CE 0085 A P 0918
VDE 0630, EN 61058,
directive on gas devices 2009/ 142/ EU,
CE 0085 A P 0918
Function
Contact 1 - 2 breaks when pressure/ differential pressure
rises to the preset value.
Contact 1 - 3 closes when pressure/ differential pressure
drops and can be used as signal contact.
rises to the preset value.
Contact 1 - 3 closes when pressure/ differential pressure
drops and can be used as signal contact.
Tests
DVGW (nach DIN 1854)
VDE 0630, EN 61058
Gasgeräterichtlinie 90 / 396 / EWG,
CE 0085 A P 0918
VDE 0630, EN 61058
Gasgeräterichtlinie 90 / 396 / EWG,
CE 0085 A P 0918