Differential pressure transmitter

OEM diﬀerential pressuretransmitter
Type 401
Type 401 pressure transmitters sense ultra fine changes in airpressure and are designed to provide optimum control. The dual
component diaphragm with it’s unique geometry, gives highly sensitive
operation and excellent repeatability, even in the range below 20
Pascal.

Pressure range
0 ... 3 – 8 mbar

+ Special development for optimize of combustion mixture
in gas boilers+ With the special diaphragm geometry inherently stable+ Ideal dimensioning for high sensitivity and with long term
stability+ Excellent repeatability even in the lower pressure range(< 20 Pascal)

Pressure and flow

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Technical overview
Pressure range
Relative and diﬀerential

0 ... 3 – 8 mbar

Operating conditions
MediumMedium / ambient
Storage

Temperature
Tolerable overload on one side
Rupture pressure
Leak rate

200 mbar< 5 cm3/h (Air), at nominal pressure

Materials in contact with the medium
Case
Diaphragm
SensorElectrical overview
OutputPower supplyLoad
Current consumption
Polarity reversal protection
Electronical compatibility

Air and neutral gases
0 ... +70 ºC-40 ... +70 ºC
25 mbar
100 mbar short period at room temperature

Polycarbonate (PC)LSR (Liquid Silicon Rubber)
Ceramic Al2O3
0.5 ... 4.5 V
10.4 ... 18 VDC 1)> 15 kOhm (to GND)
At nominal pressure without load
< 8 mA
Mechanically protected
The product is designed exclusively for installation in equipment. The customer is responsible for CE conformity.

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

Protection standard
IP 00

Protection class
III

Electrical connections
3 pole plug connector RAST 2.5Pressure connection
Pipe Ø 6.2 mm
Mounting instruction
Installation arrangement

Diaphragm horizontal (recommend)
Diaphragm vertical (on request)

Presssure connections facing downward
Pressure connections lateral, signal approx. 13 Pa below actual pressure
Snap mounting in sheet steel (thickness 1 and 2 mm)
Mounting bracket type A / type B

Mounting
Tests / Admissions
DVGW
Gas appliance directive

CE-0085BP0459 (DVGW) acc. DIN EN 1854
2016/426/EG

WeightWithout accessories~ 45 g

Packaging
Cardboard boxes with blister pack inserts (returnable).
Ordering batches quantities / Transport volumes
PiecesVaraint
1440
12 Box on euro-palette
120
1 Box

Length (cm)120
59

Width (cm)80
39Height (cm)9326Weight (kg)134
9.5

Blister (20 pcs)
72
6Accuracy

Signal drift

Parameter
Tolerance zero point 2)
Tolerance full scale 2)
Resolution
Total of linearity,hysteresis and repeatability
Long term stability acc. to DIN EN 60770
TC zero point 3)
TC zero point 3)
TC sensitivity 3)

Unitmax.
max.

% fs
% fs
% fs

± 0.5
-1.5 /+0.5
0.1

max.

% fs
% fs
% fs/10K% fs/10K% fs/10K± 0.3
± 1.0
± 0.2
± 0.3
± 0.1

typ.
max.
typ.

24 V

12 Vseconds1)

2/4

Power supply possible up to 28 VDC (with higher Power up drift see diagram)Pressure and flow2)

For changing diaphragm position from horizontal to vertical, approx. -0.13 mbar.

3)

TC = Temperature coefficient

Huba Control Type 401 | Technical data subject to change | Edition 09/2020

Order code selection table

Order number

0 ... 3 mbar
0 ... 5 mbar
0 ... 8 mbar
▲ Full scale signal at these pressure

Pressure range

444

Accessories 1)

111.
.
.

999358000000000

Order number

Bracket type A
Bracket type B

Fixing screw for wall thickness 1 – 2 mm

Orifice for pulsed pressure
Connector Rast 2.5 with cable 30 cm
Connector Rast 2.5 with cable 110 cm
Connector Rast 2.5 with cable 150 cm

100295100098102976100251111668101817112282104551

Length of screw 6 mm (min. required 2 pcs)

Calibration certificate
AMP connector 2)000Manufacture‘s Part No.
3-829868-3

Colourgrey

1-966194-3

beigefor flexible wire
7 x 0.20 mm = 0.22 mm2 or
12 x 0.20 mm = 0.35 mm2
7 x 0.25 mm = 0.35 mm2Connector with cable
IN= red
OUT = yellow
GND = black

Dimensions in mm / Electrical connections
Bracket mounting

Typ A

Typ BConnector
Rast 2.5

Direct mounting onto armature (fittings)

Hole forPT screws K 25
Hole depth 8 mm

thickness 1 mm

thickness 2 mm
Clip clamp
Other dimensions as per «Thickness 1 mm»

1)

Accessories supplied loose

Pressure and flow2)

To be ordered separately from original manufacturer. Further information can be found in the manufacturer specification No. 114-18049.49 zu finden.

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