Wt sensor Pcm260 User manual

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PCM260(WTL01) Submersible Level Transmitter

Features

■Piezoresistive diffused silicon

pressure sensor

■Probe insertion measurement

method, easy to install

■For level measurement

■Multiple protective structure

design, high protection ability

■LCD option

■Variety of styles, suitable for

various industrial applications

■Anti-corrosion stainless steel

material adopted, suitable for

many occasions

Applications

■Static pressure level

■Liquid tanks

■Sewage

■Industrial water

■Pools

■Wells

■Rivers

■Seawater

■Lakes

Notes:

1 Do not touch the diaphragm with

hard objects, which may cause

damage to the diaphragm.

2 Please read the Instruction Manual of

the product carefully before installation

and check the relevant information of

the product.

3 Strictly follow the wiring method for

wiring, otherwise it may cause product

damage or other potential faults.

4 Misuse of the product may cause

danger or personal injury.

Product overview

PCM260(WTL01) Submersible Level Transmitter accurately

measures static pressure of the liquid proportional to the level

depth using high performance piezoresistive diffused silicon

pressure sensor as the measuring element. The result is

converted to standard current or voltage signal output through

signal conditioning circuit, establishing the linear corresponding

relation between the output signal and liquid depth to complete the

measurement of the liquid depth. The product has advantages of

high precision and small volume. Submerse it directly into liquid,

the height between the end of the transmitter to the liquid surface

is measured easily. The product is applicable to the measurement

and control of the liquid level in the petroleum, chemical industry,

power plant, urban water supply and hydrological exploration

fields.

PCM260 has passed long-term aging and stability screening with

stable and reliable performance and can be used in harsh outdoor

environment. Meanwhile, it can display liquid level on site. Zero

shift and full scale span shift available.

Notes:

1 Do not misuse documentation.

2 The information presented in this product sheet is for reference only. Do

not use this document as a product installation guide.

3 Complete installation, operation, and maintenance information is provided

in the instructions of the product.

4 Misuse of the product may cause danger or personal injury.

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Performance parameters

Pressure range

0~0.5m…20mH₂O

Supply & output

4~20mA (18~36V, 24V typical)

4~20mA with display (12~36V, 24V typical)

1~5V, 0~5V, 0.5~4.5V, 0~10V (12~32V, 24V typical)

Operating temp.

-20℃~85℃

Medium temp.

-10℃~70℃

Storage temp.

-40℃~125℃

Compensated temp.

0m~10mH₂O: 0℃~60℃

10m~200mH₂O: -10℃~70℃

Zero temp. coefficient

±1.5%FS (within compensated temp.)

Span temp. coefficient

±1.5%FS (within compensated temp.)

Overpressure

200%FS~300%FS

Mechanical vibration

20g (20~5000HZ)

Shock

100g (11ms)

Accuracy

0.5%FS

Insulation

100MΩ/250VDC

Response time

≤1ms (Up to 90%FS)

Long term stability

±0.2%FS/year

Protection

IP68

Material

Low copper aluminum alloy for junction box; stainless steel for level probe

Polyurethane wire for cable

Medium compatibility

All kinds of media compatible with stainless steel 304

Electrical connection

Code

J1: 2088 housing

J2: 2088 housing with

display

J3: Cable outlet

Dimension

In mm

Junction box

Waterproof wire

Level probe

With display

Waterproof wire

Level probe

Cable outlet

Waterproof wire

Level probe

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Wiring method

Wiring

method

Current output Voltage output

①Red wire: Supply+

Green wire:

Current output

②Red wire: Supply+

Yellow wire:

Voltage output

Green wire:

Ground

Installation instructions (for reference only)

1. Installation in still water (deep wells, pools, liquid tanks, etc.)

Installation tips:

1) When measuring the level of stationary fluid in an open container, place the level transmitter

vertically into the bottom of the container and secure the cable connecting the transmitter to the

junction box at the opening of the container.

2) When the medium viscosity is relatively large (such as sewage pool), casing or bracket can be

installed to ensure that the transmitter can be put into the bottom of the container.

3) When doing an open-air installation, the terminal box of the transmitter should be placed in a

ventilated and dry place to avoid direct exposure to light and rain, which may cause the shell

temperature to be too high or water to get inside and damage the internal circuit board.

Sewage

2 non-polar wires

Control

room

Secondary

instrument

Ventilated

Secondary instrument

or control system

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Installation instructions (for reference only) (cont.)

2. Installation in moving water (rivers, lakes, etc.)

Installation tips:

1) When measuring the water level in flowing water, when the medium fluctuates greatly, a steel pipe

can be inserted in the water channel with an inner diameter of about 50 cm. Make several holes of

about Φ5 in diameter on the side of the immersed pipe opposite to the flow direction to allow water to

enter the pipe and fix the cable and junction box at the outlet of the pipe.

2) When the medium of the water channel fluctuates greatly or the sediment is large, a damping device

can be installed to filter the sediment, eliminate the adverse effects of dynamic pressure and wave

and ensure the measurement accuracy.

3) When installing the product in lightening intensified area, please indicate “Lightning Protection” when

placing an order. Meanwhile, it is recommended that users install lightning protection devices at the

site and ensure that the product and power supply are reliably grounded to reduce damage to the

transmitter caused by lightning.

Pressure range selection

Pressure

range code

Pressure

reference

Pressure range

Overpressure

Burst

pressure

Remark

0.5mi

0.5m H2O

300％FS

600％FS

1mi

1m H2O

300％FS

600％FS

1.5mi

1.5m H2O

300％FS

600％FS

2mi

2m H2O

300％FS

600％FS

2.5mi

2.5m H2O

300％FS

600％FS

3mi

3m H2O

300％FS

600％FS

3.5mi

3.5m H2O

300％FS

600％FS

4mi

4m H2O

300％FS

600％FS

4.5mi

4.5m H2O

300％FS

600％FS

5mi

5m H2O

300％FS

600％FS

5.5mi

5.5m H2O

300％FS

600％FS

6mi

6m H2O

300％FS

600％FS

6.5mi

6.5m H2O

300％FS

600％FS

Control room

Steel pipe

Damping device

Flow direction

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Pressure range selection (cont.)

Pressure

range code

Pressure

reference

Pressure range

Overpressure

Burst

pressure

Remark

7mi

7m H2O

300％FS

600％FS

8mi

8m H2O

300％FS

600％FS

9mi

9m H2O

300％FS

600％FS

10mi

10m H2O

200％FS

500％FS

12mi

12m H2O

200％FS

500％FS

15mi

15m H2O

200％FS

500％FS

18mi

18m H2O

200％FS

500％FS

20mi

20m H2O

200％FS

500％FS

Cable length selection

Pressure

range code

Mapping relation

Code

Definition

0.5mi

L1.5 L2 L3 L5 L6 L8 L10 L12 L15 L18 L20 L25

L1.5

Cable length 1.5m

1mi

L1.5 L2 L3 L5 L6 L8 L10 L12 L15 L18 L20 L25

Cable length 2m

1.5mi

L2 L3 L5 L6 L8 L10 L12 L15 L18 L20 L25

Cable length 3m

2mi

L3 L5 L6 L8 L10 L12 L15 L18 L20 L25

Cable length 5m

2.5mi

L3 L5 L6 L8 L10 L12 L15 L18 L20 L25

Cable length 6m

3mi