The Siemens PDS493 micro differential pressure transmitter is used to measure the slight pressure of liquids, gases, or steam and converts it into a 4–20 mA d.c. current (with superimposed HART digital communication) or PROFIBUS-PA communication signal output. It also enables remote configuration, monitoring, and other functions via communication devices.



Product Details



BrandPDS Smart Transmitter

Model

PDS493 Micro Differential Pressure Transmitter

Measuring
Range

100 Pa to 2 kPa

Accuracy
Class

≤ (0.0029r + 0.071)%

Output
Signal

4 mA to 20 mA d.c. with HART communication; PROFIBUS-PA communication

Power Supply
Voltage

10.5 V to 45 V d.c. (intrinsically safe barrier power supply ≤ 30 V d.c.)

Introduction





Technical Parameters

Measuring Range

100 Pa to 2 kPa

Span Ratio

20:1

Power Supply

10.5 V to 45 V d.c. (intrinsically safe barrier power supply ≤ 30 V d.c.)

Output

4 mA to 20 mA d.c. with HART communication; PROFIBUS-PA communication

Ambient Temperature

-40°C to 85°C

Medium Temperature

-40°C to 100°C (with silicone oil filling)

Accuracy

≤ (0.0029r + 0.071)%

Temperature Drift

≤ (0.15r + 0.2)% (-10°C to 60°C)
≤ (0.2r + 0.3)%/10°C (-40°C to -10°C; 60°C to 85°C)

Static Pressure Effect

≤ 0.15 r %/3.2 MPa (zero point); ≤ 0.2 r %/3.2 MPa (span)

Long-Term Drift

≤ 0.3 r %/5 years

Housing Protection Class

IP67

Explosion-Proof Rating

Ex ia IIC T6 or Ex d IIC T6

Corrosion Resistance

Select appropriate measuring part material according to the medium





PDS493 Model Spectrum



Model

Specification Code

Description

PDS493

----------

Micro Differential Pressure Transmitter

Communication Protocol

H----------
P----------

HART Communication
PROFIBUS-PA Communication

Diaphragm Seal Filling Fluid


-1----------
-2----------
-3----------

Filling Fluid　　　　　Measuring Part Cleanliness
Silicone Oil　　　　　 Standard
Silicone Oil　　　　　 Degreasing and Cleaning Treatment
Fluorinated Oil　　　　Degreasing and Cleaning Treatment

Measuring Range


L---------

Range　　　　　　　　 Measuring Range　　　　　　 Maximum Working Pressure
0.1–2 kPa　　　　　　 -2–2 kPa　　　　　　　　　　3.2 MPa

Wetted Parts Material

S----------
H----------
C----------

Isolation Diaphragm　　　　　　　　　　　Related Wetted Parts
SUS316 Stainless Steel　　　　　　　　　 SUS316 Stainless Steel
Hastelloy C-276　　　　　　　　　　　　　SUS316 Stainless Steel
Hastelloy C-276　　　　　　　　　　　　　Hastelloy C-276

Process Connection

0----------
1----------
2----------
3----------

No process fitting, 1/4 NPT internal thread on chamber flange, vent/drain at rear
No process fitting, 1/4 NPT internal thread on chamber flange, vent/drain at side
With 1/2 NPT internal thread process fitting, vent/drain at rear
With 1/2 NPT internal thread process fitting, vent/drain at side

Explosion Protection

-A----------
-B----------
-D----------

Non-Explosion Proof
Intrinsic Safety Ex ia IIC T6
Flameproof Ex d IIC T6

Electrical Connection

1----------
2----------

1/2-14 NPT internal thread, two cable entries
M20×1.5 internal thread, two cable entries

Display Head

N----------
D----------

Without display head
LCD display head

Mounting Bracket

A----------
B----------
C----------
D----------
N----------

Horizontal mounting bracket (carbon steel)
Horizontal mounting bracket (stainless steel)
Vertical mounting bracket (carbon steel)
Vertical mounting bracket (stainless steel)
No mounting bracket

Additional Options

/××------

Refer to additional option specifications