Version I/2003

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

Hydrostatic Level Probes: PC-28P

DIN 43650

electrical connector

with PG-11

packing gland

IP54 ingress

protection rating

PD type

PC28-P probe, PK-type

electrical connection

IP67 ingress protection rating

Cable electrical connection,

connection to the atmosphere

via a capillary fitted in the cable,

length of cable 3 m (unless

otherwise stated in the order)

Example

of

popular

collar

grip

for

mounting

on

the

lid

of

a

tank

Red

(+)

Black

(–)

Capillary

∅

17.2

∅

27

∅

51

6.5

31

120

L

=

250–3000:

dimension

to

order

∅

53

4 × 9

∅

∅

75

∅

6...9

Cable

14

ü Any measurement range between

200 and 3000 mm H

2

O

ü Version EExi

a

I/IICT6 KDB No. 98.457W

Construction and Use

Hydrostatic level probes are designed for the measurement of fluid levels

in open tanks, canals, constrictions in open channels, streams etc.
The probe is used to determine depths based on the simple relationship

between the height of a column of liquid and the resulting hydrostatic

pressure. The pressure measurement is taken at the level of the dia-

phragm seal of a compensated active sensing module.
An electronic amplifier producing a standard signal is situated above the

level of the medium in a case with ingress protection rating IP 54 or

IP 67, depending on the electrical connection used. The leads connecting

the amplifier to the sensor are contained in a

∅

17.2 × 1.6 pipe which is a

constructional component of the probe.

Installation and Operation

The probe may be installed as desired, providing the following conditions

are met:

♦

The probe should be fastened by the

∅

17.2 pipe;

♦

The maximum expected level of the medium should not cause the

electronic system to become flooded;

♦

If the probe is to be mounted on the lid of the tank using a collar grip,

this should be ordered together with the probe, as such grips are fitted

during manufacture of the probe.

The probe does not require maintenance. Contamination of the dia-

phragm should be removed only by dissolving. Mechanical cleaning of

the diaphragm is not permitted.
For periodic calibration the user can alter the zero point and the range

using the potentiometers, without interaction of settings.

Version I/2003

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 parameters

Any measurement range 200 ÷ 3000 mm H

2

O

Range

0...200 ÷ 500 mm H

2

O

0...700 ÷ 3000 mm H

2

O

Accuracy

1%

0.5%

Thermal zero shift error

typically 0.6% / 10°C

max 0.8% / 10°C

typically 0.3% / 10°C

max 0.5% / 10°C

Thermal range error

typically 0.4% / 10°C

max 0.6% / 10°C

typically 0.2% / 10°C

max 0.4% / 10°C

Hysteresis, repeatability 0.05%
Thermal compensation range

0 ÷ 25°C – standard,

-10 ÷ 70°C – special version

Operating temperature range (temp. of medium) -25 ÷ 80°C

NOTE: the medium must not be allowed to freeze

in the immediate vicinity of the probe’s active sensing module

Electrical parameters

Output signal

4 ÷ 20 mA in dual-lead system

Load resistance

(for 4

20 mA output)

sup

R [ ]

U

V 12 V

0.02 A

÷

≤

−

Ω

[ ]

Power supply

10 ÷ 30 V DC (EEx: max 28 V)

Error due to supply voltage fluctuations 0.005% / V

Material of elements in contact with the medium 00H17N14M2 (316Lss)

Material of the case of the electronic amplifier

0H18N9 (304ss)

Special versions, certificates

◊

EEx – spark-proof version

◊

-10 ÷ 70°C – extended thermal compensation range

◊

others – by arrangement with an Aplisens consultant, tel. [phone]

PC-28P /__/__÷__/__/ L = ... m

Special versions: EEx,

-10 ÷ 70°C, others (describe)

Type of electrical connection: PD, PK

Example: PC-28P level probe / EEx version, extended thermal compensation range / measurement range 0 ÷ 1500 mm of

furnace oil with density = 0.83 g/cm / electrical connector / 2.2 m long pipe

ñ

3

PC-28P / EEx, -10 ÷ 70°C / 0 ÷ 1500 mm ( = 0.83) / PD / L = 2.2 m

ñ

Lower limit of range,

corresponding to 4 mA output

How to order

Upper limit of range,

corresponding to 20 mA output

PD-type connection

1

2

3

4 ÷ 20 mA

e.g. Aplisens

ZL-24

+

–

Wiring diagram

Power

supply

Length of pipe