11_数字式差压计990M系列选型资料_english
Beck.
The differential pressure gauge 990 Display for air.
Differential pressure gauge 990 Display
General description
The differential pressure gauges 990 Display are for air and non-aggressive gases and will be used to measure differential pressure, overpressure and vacuum. They offer one adjustable pressure range and two output signals, which can be selected in the menu. The type 990M has a manual zero offset calibration, the type 990A has an automatic zero offset calibration.
Applications
Monitoring of air and non-aggressive gases.
Adjustable pressure range
To adapt the instrument to the application, the factory-set pres- sure range can be modified in the menu in a range from 100% to 20% of its full scale value.
Switchable pressure units
The instrument offers three different pressure units to show in the display, which can be selected in the menu. Factory setting is Pascal, which can be changed to mbar or inWC.
Switchable output signal
The output signal is either 0…10V or 4…20mA, which can be easily changed in the menu.
Adjustable response time
The response time of the output signal can be configured using the menu in a range from 0.1 to 20s.
Easy offset calibration
The output signal of the type 990M can be re-calibrated to zero in the menu when the instrument is in a pressure less state.
The series 990A performs an automated zero offset compensation. Here any drift of the zero-point is automatically corrected in regular intervals. No re-calibration is needed which reduces monitoring and maintenance efforts.
Volume flow measurement
The shape of the output signal can be changed in the menu from linear to square rooted to enable a volume flow measurement via a differential pressure reading.
Switching output
To give a switch signal at an user defined pressure level the instrument has two adjustable relay switching outputs with a maximum switching capacity of 250VAC/5A.
Measuring method
Piezoresistive pressure transducer
Technical data
Supplyvoltage Type990Mwithmanualoffsetcalibration Type990Awithautomaticoffsetcalibration Optionalwallpowersupply Outputsignal Workingresistanceforoutput4...20mA Powerconsumption Pressuremedium LinearityandhysteresiserrorWorkingtemperatureStoragetemperature Long-termstability,typical RepeatabilityPositiondependenceHumidity Responsetime,switchableProcessconnectionElectricalconnection MountingDisplay HousingdimensionsWeight IPratingafterEN60529Standards/Conformity |
18 ... 30VAC
22 ... 30VDC/AC
100 ... 240VAC(In)/24VDC(Out)
(50 ... 60Hz)
0 ... 10V and 4 ... 20mA
20 ... 480Ω
< 100mA for DC
< 250mA for AC
Air and non-agressive gases
≤ ± 1% of FS 0 ... 50°C
- 10 ... 70°C
≤ ± 0.5% to ± 2.5% of FS/year, depending on pressure range
≤ ± 0.2% of FS
≤ ± 0.02% of FS/g 0 ... 95% rel.,
non condensing
0.1 - 20.0s
4mm and 6mm tube connections
Screw terminals for wires and strands up to 1.5mm²
Panel mounting in accordance with DIN IEC 61554
Red 7 segment LED display, 4 digits
143mm x 96mm x 48mm 230g
IP20
EN60770, EN61326 2011/65/EC (RoHS)
Pressure ranges
Type | Pascal | mbar | inWC | Overload capacity | Burst pressure | Temperature error | |
990A.303 | 0 ... | 25 Pa | 0.25 | 0.10 | 20 kPa | 40 kPa | ≤ ± 5 % of FS |
990A.313 | 0 ... | 50 Pa | 0.5 | 0.20 | 20 kPa | 40 kPa | ≤ ± 5 % of FS |
990x.323 | 0 ... | 100 Pa | 1.0 | 0.40 | 20 kPa | 40 kPa | ≤ ± 5 % of FS |
990x.333 | 0 ... | 250 Pa | 2.5 | 1.00 | 20 kPa | 40 kPa | ≤ ± 5 % of FS |
990x.343 | 0 ... | 500 Pa | 5.0 | 2.00 | 20 kPa | 40 kPa | ≤ ± 2.5 % of FS |
990x.353 | 0 ... | 1 kPa | 10 | 4.00 | 20 kPa | 40 kPa | ≤ ± 1 % of FS |
990x.363 | 0 ... | 2.5 kPa | 25 | 10.05 | 40 kPa | 70 kPa | ≤ ± 1 % of FS |
990x.373 | 0 ... | 5 kPa | 50 | 20.10 | 60 kPa | 120 kPa | ≤ ± 1 % of FS |
990x.383 | 0 ... | 10 kPa | 100 | 40.20 | 60 kPa | 120 kPa | ≤ ± 1 % of FS |
990x.393 | 0 ... | 25 kPa | 250 | 100.50 | 300 kPa | 500 kPa | ≤ ± 1 % of FS |
990x.3A3 | 0 ... | 50 kPa | 500 | 200.10 | 300 kPa | 500 kPa | ≤ ± 1 % of FS |
990x.3B3 | 0 ... | 100 kPa | 1,000 | 402.00 | 1.2 MPa | 2 MPa | ≤ ± 1 % of FS |
990x.3F3 | 0 ... | 250 kPa | 2,500 | 1,004.75 | 1.2 MPa | 2 MPa | ≤ ± 1 % of FS |
Order matrix
Offset calibration | Manual 990M.3 | ||||||
Automatic | 990A.3 | ||||||
Pressure ranges | 0 ... 25 Pa (0.25 mbar) only for type 990A | 0 | |||||
0 ... 50 Pa (0.5 mbar) only for type 990A | 1 | ||||||
0 ... 100 Pa (1.0 mbar) | 2 | ||||||
0 ... 250 Pa (2.5 mbar) | 3 | ||||||
0 ... 500 Pa (5.0 mbar) | 4 | ||||||
0 ... 1 kPa (10 mbar) | 5 | ||||||
0 ... 2.5 kPa (25 mbar) | 6 | ||||||
0 ... 5 kPa (50 mbar) | 7 | ||||||
0 ... 10 kPa (100 mbar) | 8 | ||||||
0 ... 25 kPa (250 mbar) | 9 | ||||||
0 ... 50 kPa (500 mbar) | A | ||||||
0 ... 100 kPa (1,000 mbar) | B | ||||||
0 ... 250 kPa (2,500 mbar) | F | ||||||
Pressure unit | Pascal (kPa), mbar, inWC | 3 | |||||
Output signal | 0 ... 10 V or 4 ... 20 mA, with 2 switching outputs | 1 | |||||
4 ... 20 mA or 0 ... 10 V, with 2 switching outputs | 3 | ||||||
Display | Red LED display, 4 digits | 1 | |||||
Electrical connection | screw terminals for 24VAC/VDC | 4 | |||||
wall power supply for 100 to 240VAC (50 to 60Hz) | 5 | ||||||
Factory setting printed in old type.
Accessories
Climaset® consisting of 2 m PVC hose and 2 plastic pipes with 80 mm length Article No. 6555 Climaset® consisting of 2 m Silicone hose and 2 plastic pipes Article No. 6557
Climaset® consisting of 2 m PVC hose and 2 angled metal pipes Article No. 6550
Climaset® consisting of 2 m Silicone hose and 2 angled metal pipes Article No. 6556
Duct connecting pipe for Climaset® 6555, with 80 mm length Article No. 6551
Angled metal pipe for Climaset® 6550 Article No. 6552
Rubber grommet for Climaset® 6550 Article No. 6553
Roll with 100 m PVC hose Article No. 6424
Wall power supply Article No. 6505
Front frame (as separate accessory) Article No. 6506
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990M_data_english03/14 |
Technicaldatasubjecttochangewithoutpriornotice. |
Copyright©2014BeckGmbH |
48 |
42 31 |
24VAC/VDC |
0...10V 4...20mA |
Load |
N.O. |
COM 3 |
2 |
N.C. |
2 |
Beck GmbH Druckkontrolltechnik
P.O. Box 11 31
D-71140 Steinenbronn
