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Description
Pressure and differential pressure measuring transducer
PREMASGARD® 121x - Modbus
The calibratable, compact pressure measuring transducers of the PREMASGARD® 121x - Modbus series with Modbus connection can be equipped with an optional display and are used for measuring above-atmospheric, below-atmospheric or differential pressures in the air. The piezoresistive measuring element is temperature-compensated and guarantees a high degree of reliability and accuracy.
The pressure transmitters feature a configurable offset and a button for manual zero adjustment. Applications of these sensor devices are found in cleanroom, medical and filter engineering, in ventilation and air conditioning ducts, in spray booths and large-scale catering facilities, in filter monitoring and level measuring or frequency converter triggering. Media measured with these pressure transducers are air (non-precipitating) or other gaseous, non-aggressive, non-combustible media. The devices are supplied including an ASD-06 connection set (2 m connection hose, two pressure connection nipples, screws).
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
15…36 V DC
Power consumption
< 1,0 W/ 24 V DC
< 2,2 VA/ 24 V AC
< 2,2 VA/ 24 V AC
Pressure range
±1000Pa
Measuring ranges
–1000...+1000 Pa or
–5000...+5000 Pa,
depending on the type of device
–5000...+5000 Pa,
depending on the type of device
Media temperature
–20...+50 °C
Pressure connection
4/ 6 x 11 mm (hoses Ø = 4/ 6 mm),
metal pressure connection nozzles
metal pressure connection nozzles
Type of pressure
differential pressure
Accuracy
(1000 Pa): typically ± 5 Pa
compared to the calibrated reference device
compared to the calibrated reference device
Accuracy, pressure
± 5 Pa
Zero point offset
± 10 % of pressure range
(selectable using the offset calibration button with potentiometer on
circuit board or using the Modbus interface by remote maintenance)
(selectable using the offset calibration button with potentiometer on
circuit board or using the Modbus interface by remote maintenance)
Above- below-pressure
max. 5 x pressure range
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
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)
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
Housing dimensions
72 x 64 x 37,8 mm (Tyr 1)
Cable gland
2x M 12 x 1.5 (Y-adapter); with strain relief,
exchangeable, max. inner diameter 6 mm
exchangeable, max. inner diameter 6 mm
Long-term stability
± 1 % per year
Hysteresis
0.3 % of final value
Media contacting parts
ms, Ni, Nylon, PU, Si, PVC with plasticisers
Temperature drift values
± 0.1 % of final value/ °C
Linearity
< ± 1 % of final value
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
MODBUS-Y
Y-adapter for cable gland M16 x1.5 (on 2x M12 x1.5),
plastic (included in the scope of delivery)
plastic (included in the scope of delivery)