Item No. 1301-8144-4950-200
EAN 4 251325 617237

Maintenance-free microprocessor-controlled PREMASGARD® 814x - Modbus (Series) with Modbus connection, in an impact-resistant plastic housing with quick-locking screws, optionally with/ without display, with a plastic sinter filter (exchangeable), to exactly detect the relative humidity (0…100% r.H.) and the temperature (–35...+80 °C) in ducts and to measure the differential pressure (max. –7000...7000 Pa) in air. Incl. mounting flange and connection set 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 long-term stable, digital humidity and temperature sensor and a pressure sensor with piezoresistive measuring element guarantee exact measurement results. These measurands are used to internally calculate the following parameters that can be retrieved via Modbus: temperature [°C], relative humidity [% r. H.], dew point [°C], absolute humidity [g/m³], mixture ratio [g/ kg], enthalpy [kJ⁄ kg] (ignoring atmospheric air pressure), differential pressure [Pa], volume flow [m3/h], air density [kg/m3].

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.

444,96 € net
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; peak current 200 mA
Data points Temperature, relative humidity,
differential pressure
Sensors digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
Measuring range, humidity 0...100 % r. H.
Operating range, humidity 0...95 % r. H. (without dew formation)
Deviation of humidity typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Measuring range, temperature –35...+80 °C
Temperature deviation 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 metal connection nozzles for pressure hose Ø 6 mm
(optional on request with quick connect
for PVC fabric pressure hose Ø 6 mm)
Type of pressure differential pressure
Zero point offset < ± 0.7 % of final value
Above- ⁄ below-pressure max. ± 100 hPa
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 4 s / 32 s
Process connection by mounting flange, plastic
(included in the scope of delivery)
Protective tube PLEUROFORMTM, material polyamide (PA6), with torsion protection, Ø 20 mm, vmax = 30 m/s (air)
without filter: NL = 202.5 mm / with plastic filter: NL = 235 mm (optional with metal filter: NL = 227 mm)
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 according to DIN EN 61076-2-101 (optional on request)
Housing plastic, UV-stabilised,
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 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
Media contacting parts ms, Ni, Nylon, PU, Si, PVC with plasticisers
Temperature drift values ± 0.1 %/ °C
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)
Standards CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
Display three-line display with illumination, programmable, cut-out approx. 70 x 40 mm (W x H),
for display actual humidity, actual temperature and / or ACTUAL pressure
Type Item No. Price
ASD-06 Connection set (nipple straight) Connection set (nipple straight) 7100-0060-3000-000 6,74 €
MFT-20-K Mounting flange, plastic 7000-0031-0000-000 8,43 €