APLISENS Sp. z o.o., ul. Morelowa 7

, tel. [phone]

fax [phone], www.aplisens.com.pl, e-mail: aplisens@

.pl

, 03-192 Warszawa

aplisens.com

Version II/2002

Pressure Transmitter PC-28

[
[
[

Any range from 4 kPa

up to 40 MPa
4 ÷ 20 mA two-wire

transmission
Exi I/IICT6 spark proof

a

Electrical

connections

Pipe stubs

PD type

IP 54 rated Ingress

Protection; DIN 43650

Electrical Connector with

PG-11 Packing Gland

M type

M20×1.5 stub, internal diameter

4

∅

P type

M20×1.5 stub, internal diameter

12

∅

CM30×2 type

25 kPa

4 MPa

M30×2 pipe stub

with flush diaphragm

≤ <

p

CM20×1.5 type

M20×1.5 pipe stub with

flush diaphragm;

4 MPa

p

≥

Note: (CM30×2 spoz.) – hygi-

enic version – sealed-off thread;

optionally supplied with a weld-

in mounting ring and a seal.

RM type

16 kPa

4 MPa

≤ <

p

Radiator with M type pipe stub

Measurement of media up to

150°C with no impulse line

PZ type

IP 65 rated Ingress

Protection; Terminal box

with PG-11 Packing Gland

PK type

IP 67 rated Ingress

Protection; Electrical cable

connection, atmospheric

connection via a capillary

located in the cable, cable

length 3 m

(unless the order

states otherwise)

2 15

2 15

∅

12

Red (+)

Black (–)

max 148

Application

The PC-28 pressure transmitter is designed to meas-

ure pressure, underpressure and absolute pressure of

gases, vapours and liquids.

Design

The active sensing element is a piezoresistive silicon

sensor, separated from the medium by a diaphragm

and a selected type of manometric liquid.
A silicone-protected electrical circuit is situated in the

case (Ingress Protection rating from IP 54 to IP 67

depending on the type of electrical connection used).

Calibration

Potentiometers can be used to shift the zero position

and the range by up to ±10%, without altering the set-

tings.

Assembly

In view of its small mass, the transmitter can be

mounted directly on the installation. When measuring

the pressure of vapour or other hot media, a siphon

tube or impulse line should be used. We recommend

a manometric valve before the transmitter for easier

installation and for resetting or even replacement of

the unit without shutting down your process.
In the case of orders for transmitters with threads

other than M20×1.5 (e.g. G ½"), we perform the ap-

propriate reduction.
For measurement of levels and pressures requiring

special process connectors (e.g. in the food and

chemical industries) the transmitter is equipped with

an Aplisens diaphragm seal.
Assembly equipment and a full range of diaphragm

seals are described in detail later in this catalogue.

Measurements in hazardous areas

The PC-28 transmitter is spark-proof and has

Exi

a

I/IICT6 factor (under KDB decision no. 98.457W).

The installation of the transmitter in a hazard zone

requires the use of a spark-proof power supply and

measurement circuit certified as fulfilling the following

conditions: I

max

93 mA, U

max

28 V.

We recommend the use of the Aplisens ZS-30Ex

spark-proof power supplier/separator.

∅

6...9 Cable

∅

5...10 Cable

20

5

∅

4

∅

6

M20×1.5

SW27

∅

27

124

25

5

8

Version II/2002

APLISENS Sp. z o.o., ul. Morelowa 7

, tel. [phone]

fax [phone], www.aplisens.com.pl, e-mail: aplisens@

.pl

, 03-192 Warszawa

aplisens.com

Technical data

Any measurement range 4 kPa ÷ 40 MPa (positive gauge pressure, vacuum pressure);

40 kPa ÷ 8 MPa (absolute pressure)

Measurement Range

10 kPa

40 kPa

0...100 kPa ÷ 40 MPa

Overpressure Limit

(repeated, without hysteresis)

50 kPa

100 kPa

2 × range

max 70 MPa

Damaging Overpressure

100 kPa

360 kPa

8 × range or 100 MPa

Accuracy

0.4%

0.25%

Thermal error of zero

Typically 0.3% / 10°C

max 0.4% / 10°C

Typically 0.2% / 10°C

max 0.3% / 10°C

Thermal error of span

Typically 0.3% / 10°C

max 0.4% / 10°C

Typically 0.2% / 10°C

max 0.3% / 10°C

Hysteresis, repeatability

0.05%

Thermal compensation range

0 ÷ 70°C

Ambient temperature limits

-25 ÷ 80°C

Process temperature limits

-25 ÷ 95°C – direct measurement

over 95°C – measurement using a diaphragm seal, radiator or impulse line

ATTENTION: never allow the liquid to freeze in the impulse line or your installation close to the transmitter.

We recommend the standard ranges: -100, -40, -10, 10, 40, 100, 250, 600 kPa; 1, 1.6, 2.5, 6, 16, 25, 40 MPa

Absolute pressure: 40, 100, 250, 600 kPa; 1, 1.6, 2.5, 6 MPa

Vacuum gauges: -100 ÷ 100, -100 ÷ 250, -100 ÷ 600 kPa

Output signal

4 ÷ 20 mA, two-wire transmission

Power supply

12 ÷ 30 V DC (Ex max 28 V)

Error due to power supply variation 0.005% / V

Construction material

of the pipe stub and diaphragm

00H17N14M2 (316Lss)

Construction material of the case 0H18N9 (304ss)

Load resistance R [

U

V] 12 V

0.02 A

sup

Ω

]

[

≤

−

Extra features, certificates:

◊

Ex – spark-proof

◊

D – version with hydraulic gland for high-pressure hydraulic systems

◊

H – hydrophore version (high overload capacity, integrated circuit offering excess voltage protection)

◊

Hastelloy – CM 30×2 stub pipe and isolating diaphragm made of Hastelloy C 276 alloy

◊

For other features phone us on: [phone]

Ordering procedure

PC-28 /___/__÷__/___/___

Extra features:

Ex, D, H, Hastelloy, others (description)

End of measurement range – in relation to 20 mA output

Note: for measurement of absolute pressure, state ABS

Type of electrical connection: PD, PZ, PK

Type of pipe stub or type of diaphragm seal

according to the diaphragm seal data sheets

Example

Note

PC-28 / 0 1 bar

: PC-28 Transmitter / Ex feature / range 0 ÷ 100 kPa ABS inverted output (20 ÷ 4 mA) / electrical cable

connection / M20×1.5 pipe stub with internal diameter 4

: The standard transmitter comes with type M pipe stub and PD type connector. This can be ordered using a simpler

format, e.g.

∅

PC-28 / Ex / 100 ÷ 0 kPa ABS / PK / M

÷

Start of measurement range – in relation to 4 mA output

PD connector

1

2

3

4 ÷ 20 mA

e.g. Aplisens

ZL-24

+

–

Electrical diagram

Power

supply