10
G
PREMASGARD
®
711x
Rev. 2019 - V28
The calibratable
PREMASGARD
®
711x
pressure sensors (series) are equipped with eight switchable measuring ranges and equipped with optional
display (eight devices in one) and are used to measure above-atmospheric, below-atmospheric, or differential pressures in air. The piezoresistive
measuring element is temperature-compensated and guarantees a high degree of reliability and precision.
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 monitoring filters, for level measurement or for triggering frequency converters. Media measured with these
pressure transducers are clean 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 at 25 Pa) and one offset potentiometer for final value correction.
Fine adjustment by the user is possible at any time. The delivery includes the connection set
ASD-06
(2 m connection hose, two pressure connection
nipples, screws).
TECHNICAL DATA
Power supply:
24 V AC (± 20 %); 15...36 V DC for U variant
15...36 V DC for I variant, depending on working resistance, residual ripple stabilised ± 0.3 V
Working resistance:
R
a
(ohm) = (U
b
-14 V) ⁄ 0.02 A for I variant
Load resistance:
R
L
> 5 kOhm for U variant
Power consumption:
< 2 VA ⁄ 24 V DC, < 3.5 VA ⁄ 24 V AC
Measuring ranges:
multi-range switching with 8 switchable measuring ranges
(see table)
Output signal:
0 -10 V or 4...20 mA
Connection type:
2- or 3-wire connection
Media temperature:
–20...+50 °C
Pressure connection:
4 ⁄ 6 x 11 mm (hoses Ø = 4 ⁄ 6 mm), metal pressure connection nozzles
Type of pressure:
differential pressure
Medium:
clean air and non-aggressive, non-combustible gases
Accuracy:
Type 7112
(25 Pa): typically ± 1 Pa
Type 7110
(100 Pa): typically ± 2 Pa
Type 7111
(1000 Pa): typically ± 5 Pa
Type 7115
(5000 Pa): typically ± 25 Pa
compared to the calibrated reference device
Sum of
< ± 1 % of final value
Lihysteresis:
± 2 % of final value for pressure ranges < ± 250 Pa
Temperature drift values:
± 0.1 % / °C
± 0.3 % / °C for pressure ranges < 250 Pa
Zero point offset:
< ± 0.7 % of final value
± 1.4 % of final value for pressure ranges < 250 Pa
Above- ⁄ below-
atmospheric pressure:
max. ± 100 hPa
Signal filtering:
switchable 1 s ⁄ 10 s
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!
Dimensions:
126 x 90 x 50 mm (Tyr 2)
Electrical connection:
0.14 - 1.5 mm², via plug-in screw terminal
Cable gland:
M 16 x 1.5; including strain relief
Air humidity:
< 95 % r. H., non-precipitating air
Protection class:
III (according to EN 60 730)
Protection type:
IP 65 (according to EN 60 529)
Standards:
CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU,
according to EN 61326-1, according to EN 61326-2-3
Equipment:
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
ACCESSORIES
ASD - 06
Connection set (nipple straight) – (included in the scope of delivery)
ASD - 07
Connection nipple (at 90° angle)
DAL-01
Pressure outlet for ceiling or in-wall installation (e.g. in clean rooms)
WS-03
Weather and sun protection hood, 200 x 180 x 150 mm, stainless steel
V2A
(1.4301)
