10
G
PREMASGARD
®
232x - Modbus - T3
Rev. 2021 - V32
Maintenance-free pressure measuring transducer
PREMASGARD
®
232x - Modbus - T3
(Series), with Modbus connection, in an impact-resistant plastic
housing with quick-locking screws, optionally with ⁄ without display, nozzles for pressure hose (Ø 6 mm), incl. connection set
ASD-06
(2m connecting hose,
two pressure port nipples, screws). The on-wall sensor is used to measure positive, negative or differential pressure in clean air (non-precipitating) or
gaseous, non-aggressive, non-combustible 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. The piezoresistive measuring ele-
ment is temperature-compensated and guarantees a high degree of reliability and accuracy.
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 tele-
gram 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:
24 V AC (± 20 %) and 15...36 V DC
Power consumption:
< 1.2 W ⁄ 24 V DC; < 1.8 VA ⁄ 24 V AC
Type of pressure:
differential pressure
Pressure connection:
with connection nozzles for pressure hose Ø 6 mm
Measuring ranges:
–500... +500 Pa
or
–7000...+7000 Pa
depending on the type of device, see table
Accuracy:
Type 2328
(500 Pa): typically ± 3 Pa at +25 °C
Type 2327
(7000 Pa): typically ± 35 Pa at +25 °C
compared to the calibrated reference device
Above- ⁄ below-pressure:
max. ± 50 kPa
Zero point offset:
± 5 % measuring range
Medium:
clean air and other non-aggressive, non-combustible gases
Media contacting parts:
Brass, Ni, Duroplast, Si, epoxy, RTV, BSG, UV silicone gel
Media temperature:
–20...+50 °C (temperature-compensated 0...+50 °C)
Hysteresis:
0.3 % of final value
Linearity:
< ± 1 % of final value
Temperature drift values:
± 0.1 % ⁄ °C
Long-term stability:
± 1 % per year
Bus parameters:
can be configured and addressed
via DIP switches
in the absence of current delivery
(under currentless conditions)
Bus interface:
RS 485,
galvanically isolated,
Bus termination activatable via DIP switches. Up to 32 devices
possible in one segment. In case of a greater number of devices, RS485 transceivers must be used.
Bus protocol:
Modbus (RTU mode), address range 0...
247
selectable
Baud rate:
9600, 19200, 38400 Baud
Status indicator:
LED green = Telegram valid / LED red = Telegram error
Signal filtering:
4 s / 32 s
Housing:
plastic, UV-resistant, material polyamide, 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!
Housing dimensions:
108 x 78.5 x 43.3 mm (Tyr 3 without display)
108 x 78.5 x 45.8 mm (Tyr 3 with display)
Cable connection:
cable gland
, plastic (2x M 20 x 1.5; with strain relief, exchangeable, inner diameter 8 - 13 mm)
or
M12 connector
according to DIN EN 61076-2-101 (optional on request)
Electrical connection:
0.2 - 1.5 mm², using push-in terminals
Permissible air humidity:
< 95 % r. H., 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 61 326, EMC directive 2014 ⁄ 30 ⁄ EU
Optional:
Display with illumination
, three-line, programmable, cut-out approx. 51 x 29 mm (W x H),
for displaying the ACTUAL pressure or an individually programmable display value
ACCESSORIES
see table
Type ⁄ WG01
Pressure Range
Output
Display Item No.
P REM A S G A RD 23 28
– 500...+ 500 Pa
Modbus
1301-12C4-0910-200
P REM A S G A RD 2328
LCD
– 500...+ 500 Pa
Modbus
■
1301-12C4-4910-200
P REM A S G A RD 23 27
– 7000...+ 7000 Pa
Modbus
1301-12C4-0950-200
P REM A S G A RD 23 27
LCD
– 7000...+ 7000 Pa
Modbus
■
1301-12C4-4950-200
Optional:
Cable connection with
M12 connector
according to DIN EN 61076-2-101
on request
ACCESSORIES
KA2 -Modbus
Communication adapter
(USB/RS485) for system connection
1906-1200-0000-100
LA -Modbus
Line termination device
(with terminating resistor) as an active bus termination
1906-1300-0000-100
ASD-06
Connection set (included in the scope of delivery),
consisting of 2 connection nipples
(straight) made of ABS, 2 m PVC hose (soft, UV-resistant) and 4 screws
7100-0060-3000-000
ASD-07
2 connection nipples
(at 90 degree angle) made of plastic, ABS
7100-0060-7000-000
DAL-01
Pressure outlet
for ceiling or in-wall installation (e.g. in clean rooms)
7300-0060-3000-001
WS-04
Weather and sun protection hood,
130 x 180 x 135 mm, stainless steel
V2A
(1.4301)
7100-0040-7000-000
