Relative and differential pressure module type 698

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Avis Crawford
6 years ago
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Relative and differential pressure module type 698-5... 5 mbar / 0.

1 Relative and differential pressure module type mbar / mbar The pressure modules type 698 are suitable for monitoring pressure and flow in air conditioning systems and in the laboratory sector. The module is optionally available with a 3 digit LED display, two limit value switches (potential free) as well as a square root extraction. Rugged measured value detector, owing to outstanding synergy obtained by combining diaphragm technology with a cermaic element High overpressure safety margin, even in the lowest pressure range Easy to install and commission No maintenance required High Protection standard 1/5

2 Technical overview Relative Differential Operating conditions Medium Temperature Tolerable overload on one side Rupture pressure Materials in contact with the medium Pressure connections Hose connection Diaphragm Sensor housing Sealing material Sensor bar bar mbar mbar Air and neutral gases Medium ÀC Ambient ÀC Storage ÀC Differential pressure mbar 100 mbar Relative pressure bar 3x fs 1) Differential pressure mbar 200 mbar mbar 5x fs Relative pressure bar 3x fs 1) PVC Silicone / PA Silicone / Al2O3 (96%) / Silicium PA, PC, Ultem NBR Al2O3 (96%) / Silicium Electrical overview Output (Selectable by customer) Power supply Tolerable load Current consumption Polarity reversal protection Dynamic response Response time Load cycle Protection standard IP 65 Extra-low voltage Low voltage V ma ma VDC 24 VAC 115 VAC 230 VAC V > 2 kohm ma / ma < 500 Ohm < 4 VA Each connection is protected against crossover up to max. power supply 230 VAC / 115 VAC only on supply terminals, transformer short-circuit < 20 ms < 10 Hz Limit switches Two potential free change over contacts adjustable over the full range (Adjustment with potentionmeter). Contact rating Switching hysteresis 250 VAC / 6A ~ 1% fs fixed Electrical connection Screw terminals for 1.5 mm 2 Pressure connection Connection pipe (conical) Quick fitting ± mm ± 3.9 mm / M6x0.75 Display LED, 3 digit Mounting instruction Installation arrangement Unrestricted 2) Mounting Fixing holes integrated in housing Tests / Admissions Electromagnetic compatibility CE conformity acc. EN Weight 24 VDC, without display ~ 440 g 230 VAC, with diplay ~ 640 g Packaging Single packaging in cardboard 1) max. 14 bar at 20 ÀC and max. 7 bar at 70 ÀC 2) Positional error versions with full scale < 50 mbar = 0.13 mbar 2/5

3 Accuracy Parameter Unit mbar 0 1 mbar mbar mbar -1 0 bar bar Tolerance zero point max. % fs μ 1.0 μ 0.7 μ 0.7 Tolerance full scale max. % fs μ 1.0 μ 0.7 μ 0.7 Resolution % fs Total of linearity, hysteresis and repeatability % fs μ 2.5 μ 1.0 μ 1.0 Long term stability acc. DIN EN % fs μ 1.0 μ 1.0 μ 0.5 TC zero point 1) max. % fs/10k μ 1.0 μ 0.5 μ 0.3 TC sensitivity 1) max. % fs/10k μ 0.6 μ 0.5 μ 0.2 With root-extracted output (2 100% pressure) Absolute error: (% of full scale) TC zero point: % fs/10 K 1) mbar max. μ0.6 p mbar - 6 bar max. μ0.3 p +1.5 max. μ0.6 p +1.5 Test conditions: 25 ÀC, 45% RH, power supply 24 VDC TC z.p. / TC s ÀC Order code selection table X X X X X X X X X X Pressure unit 2) Version without limit switches 0 with limit switches mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differe-ntial pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure mbar Differential pressure bar Relative pressure bar Relative pressure bar Relative pressure bar Relative pressure bar Relative pressure bar Relative pressure bar Relative pressure Pa for pressure ranges < 10 mbar 1 kpa for pressure ranges 3 mbar 6 bar 2 mbar / bar 0 MPa for pressure ranges 2.5 bar 10 bar VDC / 24 VAC μ 15% 0 Power supply 24 VAC galvanically isolated VAC galvanically isolated VAC galvanically isolated V 0 Output 0 20 ma ma 2 Square root extraction Without root extraction 0 With root extraction 1 Without display 0 Display In pressure unit chosen above 0 1 With display in % 2 Pressure connection Connection pipe 0 Quick fitting 1 Installation arrangement Horizontal 0 Vertical 1 1) TC = Temperature coefficient 2) Other pressure units on request 3/5

4 Dimensions in mm / Electrical connections Hose fitting Connection pipe P1 P2 OUT SP2 SP1 IN U / I VDC 24 VAC 115 VAC 230 VAC 4/5

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Electronic relative and differential pressure switch type 616

Electronic relative and differential pressure switch type 616 Pressure range 0... 0.1 25 bar The switching points of the pressure switch type 616 can be potentiometer adjusted by the customer, or set in