Novus WL420 Manual de usuario

NOVUS AUTOMATION 1/3

Submersible Hydrostatic Level

Transmitter

LEVEL TRANSMITTER

– OPERATION MANUAL – V1.0x D

INTRODUCTION

Submersible Hydrostatic Level Transmitter is designed for

continuous monitoring of liquid level in water wells, reservoirs, tanks,

boreholes, rivers and other liquids. The submersible unit will detect

the hydrostatic pressure at the bottom of the liquid and transmit a

proportional current signal to the water column for system

instrumentation.

The highly stable 316L stainless steel diaphragm sensor is

compatible with raw or chlorinated water and most semi-aggressive

liquids and oils.

Several level measurement ranges are available and allow a wide

range of applications, such as installation on local or remote panels

and use with data loggers or PCLs.

TECHNICAL SPECIFICATION

Pressure Range 1 ... 100 m WC (1, 1.6, 2.5, 4, 6, 10,

16, 25, 40, 60 and 100 m WC)

Cable Length

5 ... 120 m (5, 10, 15, 20, 30, 40, 50,

80 and 120 m)

Sensor

Piezoresistive diaphragm

Analog Output

4-20 mA

Accuracy 0.5 % F.S. @25°C

Cable

Pur (polyurethane) 2x conductor,

shield and ventilation tube

Temperature

Compensation

0 m ~ 10 m WC: 0 to ~60 °C

10 m ~ 200 m WC: -10 to ~70 °C

Zero temp. coefficient ± 1.5 % F.S. (

within temperature

compensation)

Span temp. coefficient ± 1.5 % F.S. (

within temperature

compensation)

Mechanical Vibration 20 g (20~500 HZ)

Mechanical Shock 20 g (11 ms)

Insulation

100 MΩ / 250 VDC

Response Time

≤1 ms (Up to 90 % F.S.)

Long Term Stability

±0.2 % F.S./year

Operating

Temperature

0 to 60 °C

If measuring range < 4 m WC

-10 to 70 °C

If measuring range ≥4 m WC

Storage Temperature

-40 to 125 °C

Power Supply

Loop-powered

4-20 mA (12 ~ 36 Vcc)

Housing Material

Sensor: SS 316L

Housing: SS 304

Protective cover: SS 304

Dimensions

Height: 105 mm

Diameter: 26.5 mm

Level of Protection

IP68

Overpressure Limit

<=6 m WC: 3x F.S.

>=10 m WC: 2x F.S.

Electrical Protection

Reverse polarity and current limiter

Certification

CE, UKCA, RoHS

Warranty 1 year

Table 01 – Technical specification

IDENTIFICATION

The Submersible Hydrostatic Level Transmitter has the following

identification engraving on the sensor body:

Fig. 01 – Identification engraving

Attached to the end of the cable is an identification tag:

Fig. 02 – Identification tag

And it is supplied in the following models:

MODEL PRESSURE

RANGE

OVER-

PRESSURE

BURTS

PRESSURE CABLE

WL420-1M-L5

1 m WC

300 % F.S.

600 % F.S.

5 m

WL420-1M-L15

1 m WC

300 % F.S.

600 % F.S.

15 m

WL420-1.6M-L5

1.6 m WC

300 % F.S.

600 % F.S.

5 m

WL420-1.6M-L15

1.6 m WC

300 % F.S.

600 % F.S.

15 m

WL420-2.5M-L5

2.5 m WC

300 % F.S.

600 % F.S.

5 m

WL420-2.5M-L15

2.5 m WC

300 % F.S.

600 % F.S.

15 m

WL420-4M-L10

4 m WC

300 % F.S.

600 % F.S.

10 m

Submersible Hydrostatic Level Transmitter

NOVUS AUTOMATION 2/3

WL420-4M-L15

4 m WC

300 % F.S.

600 % F.S.

15 m

WL420-6M-L10

6 m WC

300 % F.S.

600 % F.S.

10 m

WL420-6M-L15

6 m WC

300 % F.S.

600 % F.S.

15 m

WL420-10M-L15

10 m WC

200 % F.S.

500 % F.S.

15 m

WL420-10M-L20

10 m WC

200 % F.S.

500 % F.S.

20 m

WL420-16M-L20

16 m WC

200 % F.S.

500 % F.S.

20 m

WL420-16M-L30

16 m WC

200 % F.S.

500 % F.S.

30 m

WL420-25M-L40

25 m WC

200 % F.S.

500 % F.S.

40 m

WL420-40M-L50

40 m WC

200 % F.S.

500 % F.S.

50 m

WL420-60M-L80

60 m WC

200 % F.S.

500 % F.S.

80 m

WL420-100M-L120

100 m WC

200 % F.S.

500 % F.S.

120 m

Table 02– Models

MECHANICAL INSTALLATION

The Submersible Hydrostatic Level Transmitter transmitter is

suitable to be installed in places with static pressure levels such as

liquid tanks, sewers, swimming pools, boreholes, rivers, sea and

lakes.

DIMENSIONS

Fig. 03 shows the device dimensions:

Fig. 03 – Transmitter dimensions

ELECTRICAL INSTALLATION

Fig. 04 shows the transmitter cable connections:

Fig. 04 – Transmitter cable

Table 03 shows the composition of the cable:

Function Color

1 Output current Blue wire

Power supply Red wire

Vent tube

Red tube

Table 03– Cable composition

Fig. 05 shows the electrical connections required for installing the

device:

Fig. 05 – Electrical connections

RECOMMENDATIONS FOR INSTALLATION

•During installation, do not obstruct the connection cable vent.

•Input signal conductors must run through the system floor plan

separately from the output and supply conductors. If it is

possible, in grounded conduits.

•The instruments must be powered from the instrumentation

power supply circuit.

•In control and monitoring applications is essential to consider

what can happen when any part of the system fails.

•It is recommended the use of suppressors in contact coils,

solenoids and any inductive load.

INSTALLATION INSTRUCTIONS

STILL WATER INSTALLATION

Fig. 06 – Still water installation

1) When measuring the level of stationaty fluid in an open

container, place the Submersible Hydrostatic Level

Transmitter vertically into the bottom of the container.

Submersible Hydrostatic Level Transmitter

NOVUS AUTOMATION 3/3

2) When the average viscosity is relatively high (such as in a

sewage pool), you can install a bracket to ensure that the

transmitter is positioned at the bottom of the container.

3) When doing an outdoor installation, the junction box of the

transmitter must be placed in a ventilated, dry place to avoid

direct exposure to light and rain, which could cause the junction

box temperature to be too high or allow water to enter and

consequent damage to the internal circuit board.

MOVING WATER INSTALLATION

Fig. 07 – Moving water installation

1) When there is a lot of variation when measuring the level in

running water, you can insert a steel tube with an internal

diameter of about 50 cm into the channel. In addition, several

holes of about Φ5in diameter should be made in the submerged

part of the tube, on the side opposite the direction of flow. This

helps to avoid oscillations in the level measurement.

Fig. 08 – Damping device

2) When the water channel is very uneven or there is a lot of

sediment in the bottom, you can install a damping device to filter

it out. This eliminates the adverse effects of dynamic pressure

and ensures measurement accuracy.

3) It is recommended to install lightning protection devices where

the Submersible Hydrostatic Level Transmitter will be

installed. It is also recommended that the device and power

supply be properly grounded to reduce lightning damage to the

transmitter.

WARRANTY

Warranty conditions are available on our website

www.novusautomation.com/warranty.

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