S+S REGELTECHNIK PREMASGARD 724 Modbus Serie Bedienungs- Und Montageanleitung Seite 15

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PREMASGARD
Maintenance-free, microprocessor-controlled PREMASGARD
housing with quick-locking screws, connection nozzles for pressure hose (Ø 6 mm / 0.236 in), with cable gland or M12 connector according to DIN EN
61076-2-101, optionally with/without display, for measuring the differential pressure (2 measuring channels, max. ± 7000 Pa / ± 28 inWC) in air. Type
variant 724x T with connection facility for external Pt1000 sensor (sensor element not included in the scope of delivery) for detecting the temperature
(–50...+150°C / –58...+302°F). International system of units SI (default) can be switched to Imperial (via Modbus). Incl. connection set ASD-06
(2 m / 78.74 in connecting hose, two pressure port nipples, screws).
The pressure sensor is applied to measure positive, negative or differential pressure in clean air and gaseous media. It is used in the clean room,
medical and filter technology, ventilation and air conditioning ducts, spray booths, large-scale catering facilities, for filter monitoring and level
measurement or for triggering frequency converters. A pressure sensor with piezoresistive measuring element guarantees exact measurement
results. The following measured values can be accessed via the Modbus: Differential pressure, volume flow and temperature.
Innovative Modbus sensor with galvanically separated RS485 Modbus interface, selectable bus termination resistance, DIP switch for setting the
bus parameters and bus address in current-free state, internal LEDs for telegram status display, two separate push-in terminals and large three-
line display (illuminated; with customised programming in the 7-segment and dot-matrix range). The sensor is factory-calibrated; an environmental
precision adjustment by an expert is possible.
TECHNICAL DATA
Power supply:
Power consumption:
System of units:
Data points:
Pressure type:
Pressure connection:
Measuring range, pressure:
Pressure accuracy:
Above- ⁄ below-pressure:
Zero point offset:
Hysteresis:
Linearity:
Temp. drift values:
Long-term stability:
Communication:
Bus interface:
Baud rate:
Bus protocol:
Signal filtering:
Medium:
Media contacting parts:
Media temperature:
Ambient temperature:
Permissible humidity:
Housing:
Housing dimensions:
Cable connection:
Electrical connection:
Protection class:
Safety class:
Standards:
Optional:
ACCESSORIES
®
724x - Modbus
®
24 V AC (± 20 %) and 15...36 V DC
< 4.8 W ⁄ 24 V DC typical; < 6.8 VA ⁄ 24 V AC typical
SI (default) or Imperial (switchable via Modbus)
differential pressure [Pa] [inWC], volume flow [m³/h] [CFM],
temperature [°C] [°F] – Type 724x T with connection facility for external Pt1000 sensor (–50...+150°C /
–58...+302°F) (sensor element not included in the scope of delivery)
differential pressure (2 measuring channels)
with connection nozzles for pressure hose Ø 6 mm / 0.236 in
–500... +500 Pa / –2.0...+2.0 inWC
–7000...+7000 Pa / –28... +28 inWC
depending on the device type, see table
Type 724x (500 Pa / 2.0 inWC): typically ± 13 Pa at +25 °C / ± 0.05 inWC at +77 °F
Type 724x (7000 Pa / 28 inWC): typically ± 105 Pa at +25 °C / ± 0.12 inWC at +77 °F
compared to the calibrated reference device
max. ± 50 kPa / ± 200 inWC
± 10 % measuring range
0.3 % of final value
< ± 1 % of final value
± 0.1 % per °C
± 1 % per year
Modbus (RTU cable)
RS 485, galvanically isolated
9600, 19200, 38400 Baud
Modbus (RTU mode), address range 0...247 adjustable
0 s / 1 s / 10 s
clean air and non-aggressive, non-combustible gases
PA6, Duroplast, Si, epoxy, RTV, BSG, UV silicone gel
–20...+50 °C / –4...+122 °F (temperature-compensated 0...+50 °C / +32...+122 °F)
–30...+70 °C / –22...+158 °F
0...95 % RH (non-precipitating air)
plastic, UV-resistant, polyamide material, 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!
126 x 90 x 50 mm / 4.96 x 3.54 x 1.97 in (Tyr 2)
cable gland plastic (M 16 x 1.5;
with strain relief, exchangeable, inner diameter 10.4 mm / 0.41 in) or
M12 connector according to DIN EN 61076-2-101 (optional)
2
0.2 - 1.5 mm / 24 - 16 AWG, via push-in terminals
III (according to EN 60 730)
IP 65 (according to EN 60 529) in the built-in state
CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU
three-line display with illumination, programmable, cut-out approx. 70 x 40 mm / 7.87 x 1.38 in (W x H),
to display the actual pressure or volume flow
or an individually programmable display value
see table
724x - Modbus (series) with Modbus connection, in an impact-resistant plastic
or
15
Rev. Data - V22