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PREMASGARD 7249T-Modbus LCDMaintenance-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.
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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 -50°C...150°C Operating range, temperature typically ± 0.2 K at +25 °C 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 Medium clean air and non-aggressive, non-combustible gases Bus protocol Modbus (RTU mode), address range 0...247 selectable Signal filtering 0s, 1s, 10s Sensor protection plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable (optional metal sinter filter, Ø 16 mm, L = 32 mm) Electrical connection 0.2 - 1.5 mm2, via push-in terminal 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) 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) Standards CE conformity, electromagnetic compatibility according to EN 61326, according to EMC Directive 2014/ 30/ EU |
