S+S PREMASGARD 714x -Modbus Notice D'instructions page 14

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®
PREMASGARD
Maintenance-free, microprocessor-controlled PREMASGARD
optionally with ⁄without display, with cable gland or M12 plug-in connector according to DIN EN 61076-2-101, for measuring the differential pressure
(max. –7000...7000 Pa) in air. Incl. connection kit ASD-06 (2m 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 [Pa], volume flow [m
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, 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:
Pressure type:
Data points:
Measuring range, pressure:
Pressure accuracy:
Above- ⁄ below-pressure:
Zero point offset:
Hysteresis:
Linearity:
Temp. drift values:
Long-term stability:
Bus protocol:
Signal filtering:
Pressure connection:
Medium:
Media contacting parts:
Media temperature:
Ambient temperature:
Permissible humidity:
Housing:
Housing dimensions:
Cable connection:
Electrical connection:
Protection class:
Safety class:
Standards:
Optional:
ACCESSORIES
ASD - 06
714x - Modbus
24 V AC (± 20 %) and 15...36 V DC
< 4.8 W ⁄ 24 V DC typical;
< 6.8 VA ⁄ 24 V AC typical
Differential pressure
Differential pressure [Pa],
volume flow [m 3 /h]
–500... +500 Pa or
–7000...+7000 Pa
depending on the device type, see table
Type 7148 (500 Pa): typical ± 13 Pa
Type 7147 (7000 Pa): typical ± 105 Pa
compared to a calibrated reference device
max. ± 50 kPa
± 10 % measuring range
0.3 % of final value
< ± 1 % of final value
± 0.1 % ⁄ °C
± 1 % per year
Modbus (RTU mode), address range 0...247 selectable
0 s / 1 s / 10 s
with metal nozzles for pressure hose Ø 6 mm
clean air and non-aggressive, non-combustible gases
Brass, Ni, Duroplast, Si, epoxy, RTV, BSG, UV silicone gel
–20...+50 °C (temperature-compensated 0...+50°C)
–30...+70 °C
0...95 % r. H. (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 (Tyr 2)
cable gland plastic (M 16 x 1.5;
with strain relief, exchangeable, inner diameter 10.4 mm) or
M12 plug-in connector according to DIN EN 61076-2-101 (optional)
2
0.2 - 1.5 mm , via push-in terminals
III (according to EN 60 730)
IP 65 (according to EN 60 529) in the built-in state
CE-conformity, electromagnetic compatibility according to EN 61 326, EMC directive 2014 ⁄ 30 ⁄ EU
Illuminated display, 3-line, programmable,
cut-out approx. 70 x 40 mm (W x H),
to display the actual pressure or volume flow
or an individually programmable display value
see table
Connection set (nipple straight) (included in the scope of delivery)
® 714x - Modbus (series) with Modbus connection, impact-resistant plastic housing,
14
Rev. 0000 - V10
3 /h].