Differential Pressure Transmitter 988 - for liquid an gaseous, 196,35 €

The differential pressure transmitters of the 988 series are used to measure differential pressure and overpressure.
Monitoring of liquid and gaseous, non-flammable and non-aggressive media.

Applications:

Building automation
Measurement technology in the sanitary and industrial sector
Differential pressure measurement between supply and return in heating systems
Monitoring of filters, fans and compressors
Cooling systems for heating / air conditioning

Technical data

Pressure range
For an optimal adaptation to the application, different pressure ranges are available. The measurement is carried out by a ceramic pressure measuring cell, temperature-compensated via internal PTC.
Output Signal
In the 3-wire version there is an output signal of 0 … 10 V, or 4 … 20 mA available. For the 2-wire version the transmitter provides an output signal of 4 … 20 mA.
Electrical connection
The electrical connection of the transmitter is optionally available with a 4-pin standardized device plug according to DIN EN 175301 Form A, or with a 4-pin M12 flange plug, A-coded, according to DIN EN 61079.

Manufacturer information:

Beck Sensortechnik GmbH
Ferdinand-Steinbeis-Strasse 4
D-71144 Steinenbronn

Tel.: +49 7157 5287-0
E-Mail: info@beck-sensors.com

Series	988
Technology	2-wire	3-wire		3-wire
Standard measuring ranges and pressure measuring cells (Special measuring ranges on request)	0-2 bar; 0-6 bar; 0-10 bar Design at pressure level PN40 Ceramic pressure measuring cell Al₂O₃ with Parylene C coating
Related voltage	24 VDC	24 V AC/DC (50-60 Hz)
Admissible operating voltage	18 – 30 VDC	18 – 30 V AC/DC
Power consumption	< 0.51 W (VA)	< 1.2 W (VA)
Output singal (linear) Resolution 14 bit	4-20 mA	4-20 mA		0-10 V
Output load	≤ 400 Ω @ 24 VDC	≤ 600 Ω @ 24 VDC ≤ 400 Ω @ 24 VAC		≥ 1 kΩ
Permissible medium temperature (Media not freezing or with suitable frost protection!)	-20 … +105°C (for a short time 120°C)
Permissible ambient temperature (operating)	-20 … +85°C
Storage temperature	-50 … +125°C
Total Error-/Char. Curve deviation (FS pressure cell) In the adjusted temperature range* *incl. non-linearity, hysteresys and reproducibility	≤ ±1.5% @ -20 … +85°C	≤ ±1.0% @ -20 … +85°C
Accuracy measuring cell (FS pressure cell) incl. non-linearity, hysteresys and reproducibility Hysteresis pressure cell Repeatability of the pressure cell Long-Term drift pressure cell	±0.4% (typ.) / ±1.0% (max.) ≤ ±0.2%FS ≤ 0.1%FS ≤ 0.3%FS/Year
Effect of voltage supply (FS)	< 0.04% / V
Effect of temperature (FS pressure cell) incl. electronic	≤ 0.018% / K (typ.) ≤ 0.036% / K (max.)
Humidity	0 - 95% rH (not-condensed)
Reference conditions technical data	EN 60770; 23°C
Clock cycle pressure measurement Response time	< 4 ms 200 ms	< 2 ms 100 ms
Standard process connection P1 and P2	2 x inner thread G1/4 Axial
Electrical connection	Plug connector as per DIN 175301 Form A or M12 connector DIN EN 61079 A-coded
Materials	In contact with media: pressure chamber Brass / Stainless steel; EPDM O-ring No contact with media: NBR seal; Cover ABS black; Plug connector PA black
Weight	ca. 450 g
Protection rating as per DIN EN 60529	IP65
CE-Conformity according to EN 61326	■		■	■
RoHS Conformity according to 2011/65/EU	■		■	■