S451 Volumetric Flow Ranges 

DN

INCH

Low

(m3/h)

 Standard

(m3/h)

 Max

(m³/h)

DN25

1"

0.2 ... 48

0.8 ... 191

1.5 ... 382

DN32

1¼"

0.3 ... 86

1.4 ... 345

2.8 ... 689

DN40

1½"

0.5 ... 119

1.9 ... 475

3.8 ... 949

DN50

2"

0.8 ... 194

3.1 ... 777

6.2 ... 1,554

DN65

2½"

1.3 ... 332

5.3 ... 1,329

10.6 ... 2,658

DN80

3"

1.8 ... 461

7.4 ... 1,843

14.7 ... 3,686

DN100

 4"

2.8 ... 707

11.3 ... 2,826

23 ... 5,653

DN125

 5"

4.4 ... 1,107

17.7 ... 4,427

35 ... 8,853

DN150

 6"

6.4 ... 1,596

26 ... 6,382

51 ... 12,764

DN200

8"

11.4 ... 2,843

45 ... 11,373

91 ... 22,746

DN250

10"

18 ... 4,448

71 ... 17,791

142 ... 35,583

DN300

12"

26 ... 6,413

103 ... 25,650

205 ... 51,300

 Measurement

 Flow

 Accuracy

 ±(1.5 % of reading + 0.3 % full scale)

 Selectable units

 m³/h, m³/min, l/min, l/s, cfm, kg/h, kg/min, kg/s

 Repeatability

 0.25 % o.RDG

 Sensor

 Thermal mass flow sensor

 Sampling rate

 3 samples / sec

 Turndown ratio

 200:1

 Response time (t90)

 0.5 sec

 Consumption

 Selectable units

 m³, ft³, t, lb, l, kg

 Pressure

 Accuracy

 0.5 % FS

 Selectable units

 bar, psi, kPa, MPa

 Measuring range

 0 ... 1.6 MPa (g) or 0 ... 5.0 MPa (g) or 0 ... 0.2 MPa (a)

 Sensor

 Piezzo resistive sensor

 Temperature

 Accuracy

 0.5 °C

 Selectable units

 °C, °F

 Measuring range

 -40 ... +120 °C

 Sensor

 Pt1000

 Reference conditions

 Selectable conditions

 20 °C 1000 mbar (ISO1217), 0 °C 1013 mbar (DIN1343) freely adjustable

 Signal / Interface & Supply 

 Analog output

 Signal

 2 x 4 ... 20 mA (4-wire), isolated 

 Scaling

 0 ... max flow, freely adjustable

 Load

 Max. 400 Ohm

 Update rate

 Value updated ever 1 sec

 Pulse output

 Signal

 Switch output, normally open, max. 30 VDC, 200 mA

 Scaling

 1 pulse per consumption unit (selectable)

 ^Alarm

 Channel and threshold freely setable

 Fieldbus

 Protocol

 Modbus/RTU, HART, M-Bus

 Supply

 16 ... 30 VDC

 Current consumption

 200 mA

 General data

 Wireless

 S4C-FS App for Android and iOS

 Others

 3 touch button at display

 Display

 Integrated

 Color graphics display

 Material

 Process connection

 Stainless steel 1.4404 (SUS 316L)

 Housing

 Al alloy

 Sensor

 Stainless steel 1.4404 (SUS316L),

 4J50 nickel plated, glass

 Metal parts

 Stainless steel 1.4404 (SUS 316L)

 Miscellaneous

 Electrical connection

 Screw terminals

 Protection class

 IP67, Ex option: IP65

 Approvals

 CE, RoHS, FCC

 IECEx / GB : Ex db ib IIC T4 Gb / Ex ib tb IIIC T135°C Db

 ATEX: II 2G Ex db ib IIC T4 Gb / II 2D Ex ib tb IIIC T135°C Db

 Process connection

 S451: G3/4" (ISO 228/1)

 S453: Measuring section with

       R-thread or Flange

 Weight

 S451 300mm:                     2.15kg

 S451 200mm:                     2.08kg

 S453 without section:        1.86kg

 Operating conditions

 Medium

 Air, N₂, O₂, CO₂ and other non corrosive gases

 Medium temperature

 S451: -30 ... +140 °C (applicable for Non-Ex-Option)

            -30 ... +90 °C (applicable for Ex-Option)

 S453: -30 ... +90 °C

 Medium humidity

 < 90 %, no condensation

 Operating pressure

 S451: 0 ... 5.0 MPa for Non-Ex-and

       Ex Option*

 S453: 0 ... 4.0 MPa for Non-Ex-and

       Ex Option

 *For pressure above 1.5 MPa use the

       installation device A530 1119 or

       A530 1120 to install S451.

 Ambient temperature

 -40 ... +65 °C

 Storage temperature

 -40 ... +70 °C

 Transport temperature

 -40 ... +70 °C

 Pipe sizes

 S451: >= DN25

 S453: DN25 ... DN80