• Huba 698 Differential pressure transmitter

Huba 698 Differential pressure transmitter

Medium:Air and neutral gases
Pressure range:-5 ... 5 mbar / 0 ... 10000 mbar
Ausgang:0 ... 10 V, 0 ... 20 mA, 4 ... 20 mA
Accuracy:< 1.0% fs
Electrical connection:Screw terminals
Pressure connection:Hose connector conical 4 ... 7 mm or quick fitting
Model : Huba 698

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

Pressure range
Relative -1 ... 0 bar
 0 ... 10 bar
Differential -5 ... 5 mbar
 0 ... 500 mbar

Operating conditions
Medium Air and neutral gases
Temperature
 Medium 0 ... +70 ºC
Ambient -10 ... +70 ºC
Storage -40 ... +70 ºC
Tolerable overload on one side Differential pressure 0 ... 50 mbar 100 mbar
Relative pressure 0.1 ... 10 bar 3x fs 1)
Rupture pressure
 Differential pressure 0 ... 50 mbar 200 mbar
100 ... 500 mbar 5x fs
Relative pressure 0.1 ... 10 bar 3x fs 1)

Materials in contact with the medium
Pressure connections PVC
Hose connection Silicone / PA
Diaphragm Silicone / Al2O3 (96%) / Silicium
Sensor housing PA, PC, Ultem
Sealing material NBR
Sensor Al2O3 (96%) / Silicium

Electrical overview
Output (Selectable by customer)
0 ... 10 V
0 ... 20 mA
4 ... 20 mA
Power supply
 17 ... 33 VDC
24 VAC
115 VAC
230 VAC
Tolerable load 0 ... 10 V > 2 kOhm
0 ... 20 mA / 4 ... 20 mA < 500 Ohm
Current consumption < 4 VA
Polarity reversal protection Extra-low voltage Each connection is protected against crossover up to max. power supply
Low voltage 230 VAC / 115 VAC only on supply terminals, transformer short-circuit

Dynamic response
Response time < 20 ms
Load cycle < 10 Hz

Protection standard
IP 65

Limit switches
Two potential free change over contacts adjustable over the full range (Adjustment with potentionmeter).
Contact rating 250 VAC / 6A
Switching hysteresis ~ 1% fs fixed

Electrical connection
Screw terminals for 1.5 mm2

Pressure connection
Connection pipe (conical) Ø 4 ... 7 mm
Quick fitting Ø 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 61326-2-3

Weight
24 VDC, without display ~ 440 g
230 VAC, with diplay ~ 640 g

Packaging
Single packaging in cardboard