PREMASGARD® 724x - Modbus

Dual pressure sensor as pressure transmitter and differential pressure transmitter PREMASGARD® 724x - Modbus

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Product group: WG02
Dual pressure sensor as pressure transmitter and differential pressure transmitter PREMASGARD® 724x - Modbus
Maintenance-free, microprocessor-controlled PREMASGARD® 724x - Modbus pressure transmitter series with Modbus connection, impact resistant plastic housing, optionally with/without display, with cable gland or M12 connector according to DIN EN 61076-2-101, for measuring the differential pressure (max. –7000...+7000 Pa) in air.
Supplied including ASD-06 connection set (2 m connecting hose, two pressure port nipples, screws).
Version 724x T with connection for an external Pt1000 sensor (sensor element not included in scope of delivery) for temperature detection (–50...+150°C).
The pressure measuring transducers serve to measure positive, negative or differential pressure in clean air and gaseous media. They are used in cleanroom, medical and filter engineering, ventilation and air conditioning ducts, spray booths and large-scale catering facilities, in filter monitoring and level
measurement or frequency converter triggering. A pressure sensor with piezoresistive measuring element guarantees precise measuring results. The following measured values can be accessed via the Modbus: differential pressure [Pa], volume flow [m3/h] and temperature [°C].
Innovative Modbus sensor device with galvanically separated RS485 interface, selectable bus termination resistance, DIP switches for setting the bus parametres and bus address in current-free state, LEDs for telegram status display, two separate push-in terminals and a large three-line back-lit display with customised programming in the 7-segment and dot-matrix ranges. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
Power consumption
< 4.8 W/ 24 V DC typical; < 6.8 VA/ 24 V AC typical
Data points
Temperature, differential pressure
Measuring range, temperature
Operating range, temperature
typically ± 0.2 K at +25 °C
Sensor protection
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
Media temperature
–20...+50 °C
Pressure connection
with connection nozzles for pressure hose Ø 6 mm
Type of pressure
differential pressure
Zero point offset
< ± 0.7 % of final value
Above- below-pressure
máx. ± 50 kPa
Ambient temperature
–30...+70 °C
clean air and
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
Signal filtering
0s, 1s, 10s
Electrical connection
0.2 - 1.5 mm², via push-in terminal
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief,
exchangeable, max. inner diameter 10.4 mm) or
M12 connector (male, 5-pin, A-code)
according to DIN EN 61076-2-101 (optional on request)
Housing dimensions
126 x 90 x 50 mm (Tyr 2)
Cable gland
2x M 16 x 1.5; including strain relief, exchangeable
Long-term stability
± 1 %/ year
Sum of Linearity+hysteresis
< ± 1 % of final value
Temperature drift values
± 0.1 %/ °C
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529) housing only! (PLEUROFORM IP 30)
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU