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- Accessory
Description
Pressure and differential pressure measuring transducer
PREMASGARD® 711x
The calibratable pressure sensors PREMASGARD® 711x (series) with eight switchable measuring
ranges (eight devices in one), housing made from impact-resistant plastic, optionally with/ without
display, with cable gland or M12 connector according to DIN EN 61076-2-101 and pressure connection
nozzles (quick connect optional) are used to measure positive, negative or differential pressures in air.
The piezoresistive measuring element is temperature-compensated and guarantees a high degree of
reliability and accuracy.
Applications of these pressure sensors are in clean room, medical and filter technology, in ventilation
and air conditioning ducts, in spray booths, in large-scale catering facilities, for filter monitoring
and level measurement or for triggering frequency converters. Media measured with these pressure
transducers are air (non-precipitating), or other gaseous, non-aggressive, non-combustible media.
The pressure sensor has a button for manual zero point calibration (automatic zero point calibration
optional/standard for 25 Pa) and an offset potentiometer for final value correction. The sensor is
factory-calibrated; an environmental precision adjustment by an expert is possible. The delivery
includes the connection set ASD-06 (2 m connection hose, two pressure port nipples, screws).
Technical details
Power consumption
< 2 VA/ 24 V DC, < 3.5 VA/ 24 V AC
Voltage supply
15...36 V DC
depending on working resistance, residual ripple stabilised ± 0.3 V
depending on working resistance, residual ripple stabilised ± 0.3 V
Working resistance
Ra (ohm) = (Ub -14 V)/ 0.02 A for I variant
Connection type
2- or 3-wire connection
Measuring ranges
multi-range switching with 8 switchable measuring ranges
Media temperature
–20...+50 °C
Type of pressure
differential pressure
Zero point offset
< ± 0.7 % of final value
± 1.4 % of final value for pressure ranges < 250 Pa
± 1.4 % of final value for pressure ranges < 250 Pa
Above- below-pressure
máx. ± 100 hPa
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
Signal filtering
switchable 1 s/ 10 s
Electrical connection
2- or 3-wire connection
0.14 - 1.5 mm², via plug-in screw terminal
0.14 - 1.5 mm², via plug-in screw terminal
Housing dimensions
126 x 90 x 50 mm (Tyr 2)
Cable gland
M 16 x 1.5; including strain relief
Dimensions
126 x 90 x 50 mm (Tyr 2)
Pressure range
±25Pa
Sum of Linearity+hysteresis
< ± 1 % of final value
± 2 % of final value for pressure ranges < ± 250 Pa
± 2 % of final value for pressure ranges < ± 250 Pa
Temperature drift values
± 0.1 % / °C
± 0.3 % / °C for pressure ranges < 250 Pa
± 0.3 % / °C for pressure ranges < 250 Pa
Output
4...20 mA
Air humidity
< 95 % RH, non-precipitating air
Output signal
4...20 mA
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Pressure connection
with connection nozzle
for pressure hose Ø 6 mm,
optionally with quick connect made from stainless steel
for PVC fabric pressure hose Ø 6 mm (external diameter)
for pressure hose Ø 6 mm,
optionally with quick connect made from stainless steel
for PVC fabric pressure hose Ø 6 mm (external diameter)
Accuracy
(25 Pa): typically ± 1 Pa
compared to the calibrated reference device
compared to the calibrated reference device
Accuracy, pressure
± 1 Pa
Measuring range pressure
0 ... +25 Pa / -25 ... +25 Pa
Cable connection
Cable fitting, plastic
(M 16 x 1.5; with strain relief, exchangeable,
max. inner diameter 10.4 mm)
(M 16 x 1.5; with strain relief, exchangeable,
max. inner diameter 10.4 mm)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Standards
CE conformity,
according to EMC directive 2014/ 30/ EU,
according to EN 61326-1, according to EN 61326-2-3
according to EMC directive 2014/ 30/ EU,
according to EN 61326-1, according to EN 61326-2-3
Features
three-line display with illumination, cutout approx. 70 x 40 mm (W x H),
for displaying ACTUAL pressure
as well as automatic zero point calibration
for displaying ACTUAL pressure
as well as automatic zero point calibration