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4800D-20-42-05-P20
User manual
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Tek-Trol 4800D-05-42-05-P14, 4800D-15-42-05-T20, 4800D-20-42-05-P20, 4800D-20-42-05-T20, 4800D-10-42-05-P14 User manual

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Technology Solutions
EK-S
T
UB 4800D
Wastewater Submersible Level Transmitter
Instruction Manual
Document Number: IM-4800D
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Technology Solutions
Instruction Manual Tek-Sub 4800D
Table of Contents
Safety Instructions .................................................................................................... 2
1
1.1 Intended Use ............................................................................................................... 2
1.2 Safety Instructions from the Manufacturer ................................................................... 2
1.2.1 Disclaimer .......................................................................................................................... 2
1.2.2 Product Liability and Warranty ......................................................................................... 2
1.2.3 Information Concerning the Documentation .................................................................... 2
1.3 Safety Precautions ....................................................................................................... 2
1.4 Packaging, Transportation and Storage ......................................................................... 4
1.4.1 Packaging ........................................................................................................................... 4
1.4.2 Transportation................................................................................................................... 4
1.4.3 Nameplate ......................................................................................................................... 4
2 Product Description .................................................................................................. 5
2.1 Introduction ................................................................................................................ 5
2.2 Measuring Principle ..................................................................................................... 5
2.3 Operation .................................................................................................................... 6
2.4 Technical Specification ................................................................................................. 7
2.5 Dimensional Drawings ................................................................................................. 8
2.6 Model Chart................................................................................................................. 8
3 Installation................................................................................................................ 9
3.1 Considerations to be taken before Installation .............................................................. 9
3.2 Installation Methods .................................................................................................... 9
3.2.1 Installation in the Static Liquid ........................................................................................ 10
3.2.2 Installation in an Open Channel ...................................................................................... 10
4 Electrical Connections ............................................................................................. 11
5 Operation ............................................................................................................... 12
6 Maintenance ........................................................................................................... 13
7 Troubleshooting ...................................................................................................... 14
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Instruction Manual Tek-Sub 4800D
1 Safety Instructions
1.1 Intended Use
The Tek-Sub 4800D Wastewater Submersible Level Transmitter is used to calculate the level of liquid in slurry and wastewater applications.
1.2 Safety Instructions from the Manufacturer
1.2.1 Disclaimer
The manufacturer will not be held accountable for any damage that happens by using its product, including, but not limited to direct, indirect, or incidental and consequential damages. Any product purchased from the manufacturer is warranted in accordance with the relevant product documentation and Terms and Conditions of Sale. The manufacturer has the right to modify the content of this document, including the disclaimer, at any time for any reason without prior notice, and will not be answerable in any way for the possible consequence of such changes.
1.2.2 Product Liability and Warranty
The operator shall bear authority for the suitability of the device for the specific application. The manufacturer accepts no liability for the consequences of misuse by the operator. Wrong installation or operation of the devices (systems) will cause the warranty to be void. The respective Terms and Conditions of Sale, which forms the basis for the sales contract shall also apply.
1.2.3 Information Concerning the Documentation
To prevent any injury to the operator or damage to the device, it is essential to read the information in this document and the applicable national standard safety instructions. This operation manual contains all the information that is required in various stages, such as product identification, incoming acceptance and storage, mounting, connection, operation and commissioning, troubleshooting, maintenance, and disposal.
1.3 Safety Precautions
You must read these instructions carefully prior to installing and commissioning the device. These instructions are an important part of the product and must be kept for future reference. Only by observing these instructions, optimum protection of both personnel and the environment, as well as safe and fault-free operation of the device can be ensured.
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Instruction Manual Tek-Sub 4800D
For additional information that is not discussed in this manual, contact the
, if not avoided, could result in
manufacturer.
Warnings and Symbols Used
The following safety symbol marks are used in this operation manual and on the instrument.
WARNING
Indicates a potentially hazardous situation which
serious injury or death.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
NOTE
Indicates that operating the hardware or software in this manner may damage it or lead to system failure.
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Instruction Manual Tek-Sub 4800D
1.4 Packaging, Transportation and Storage
1.4.1 Packaging
The original manufacturer’s package consists of
1. Tek-Sub 4800D Wastewater Submersible Level Transmitter
2. Documentation
1.4.2 Transportation
• Avoid impact shocks to the device and prevent it from getting wet during transportation.
• Verify local safety regulations, directives, and company procedures with respect to hoisting, rigging, and transportation of heavy equipment.
• Transport the product to the installation site using the original manufacturer’s
packing whenever possible.
1.4.3 Nameplate
The nameplate lists the order number and other important information, such as design details and technical data.
NOTE
Check the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate.
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Instruction Manual Tek-Sub 4800D
2 Product Description
This section covers the reference and specification data, as well as the ordering information.
2.1 Introduction
The Tek-Sub 4800D Wastewater Submersible Level Transmitter is exclusively designed for slurry and wastewater applications. Manufactured for precise level measurement, its clog-free silicon piezoresistive sensor determines the liquid level without being affected by debris. Packaged in stainless steel housing, the waterproof cable makes it ideal for long-term trouble-free service. The Tek-Sub 4800D is capable of real-time level measurement with several standard output signal options. The instantaneous level output is used for pump control to maintain the level or to report real-time level status.
This high-performance level measurement device is available in several level ranges, custom cable lengths and materials, making it an ideal match for various applications.
2.2 Measuring Principle
The Tek-Sub 4800D Wastewater Submersible Level Transmitter has a sensor attached to a long cable, which is lowered to the bottom of the tank or well. The sensor operates by measuring the hydrostatic pressure of the liquid. Hydrostatic pressure (or head pressure) is the pressure exerted by the fluid in the tank or well. The hydrostatic pressure measured by the sensor is determined by two parameters: the density and the height of liquid. With liquid density remaining constant, a change in hydrostatic pressure necessarily reflects a difference in liquid level.
Fig.1. Measuring Principle
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Instruction Manual Tek-Sub 4800D
2.3 Operation
A typical Tek-Sub 4800D Wastewater Submersible Level Transmitter application is shown in the following figure.
Fig.2. Mounting the transmitter
The pressure at the bottom of the tank or well is related to the height of the liquid. This level pressure is called hydrostatic pressure or head pressure. Typical units for measurement of hydrostatic pressure are inches, feet, or meters of water column. In a water column, hydrostatic pressure of 27.7" w.c. is approximately equivalent to 1 PSI. The volume of water or the shape of the tank or vessel will not affect the hydrostatic pressure; it is the height of water that affects the pressure. Whether it is in a large water tank or a small bucket of water, the hydrostatic pressure 27.7" w.c. is the same.
Modern PLC’s and HMI’s can calculate the liquid level of a tank by entering the
geometry of the tank and the specific gravity of the liquid.
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Instruction Manual Tek-Sub 4800D
2.4 Technical Specification
Pressure range
5 psig to 20 psig (3.5 mH2O to 14 mH2O), optional ranges available
Pressure type
Gauge (vented)
Accuracy
0.5% FS
±0.75% FS (typ), ±1.5% FS (max) overcompensated temperature range
temperature range
Long term stability
±0.2% FS/year (typ.), ±0.3% FS/year (max.)
Output signal
4-20 mA, RS-485, 0.5-4.5 VDC
Load resistance (RL)
Vibration
10g-force (20-2000 Hz)
Insulation resistance
100 MΩ/50 VDC
Compensated temperature range
32 °F to 12 °F (0 °C to 50 °C)
Media compatibility
All media compatible with 316L SS
Diaphragm
316L SS, option ceramic
Oil filling
Silicone oil
Over pressure 150% FS
Temperature coefficient-zero
Temperature coefficient-span
±0.75% FS (typ), ±1.5% FS (max) overcompensated
Power supply (Vs) 12 to 36 VDC
RL<(Vs-12)/0.02A
Shock 100g-force (10 ms)
Cycles 10x10⁶ cycles
Operating temperature range -4 °F to 158 °F (-20 °C to 70 °C)
Storage temperature range -40 °F to 257 °F (-40 °C to 125 °C)
Housing 304 SS
Cable PTFE or Polyurethane
Net weight 0.88 lb (400 g)
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Instruction Manual Tek-Sub 4800D
2.5 Dimensional Drawings
Transmitter
10
10 psig (7 mH2O)
15
15 psig (10.5 mH2O)
20
20 psig (14 mH2O)
42
4-20 mA
43 45
4-20 mA
0.5-4.5 VDC
49
RS-485
P14
40' of Polyurethane Cable
P20 P34
60' of Polyurethane Cable 100' of Polyurethane Cable
T14
40' of PTFE Cable
T20
60' of PTFE Cable
T34
100' of PTFE Cable
2.6 Model Chart
Tek-Sub 4800D
05
Wastewater Submersible Level
5 psig (3.5 mH2O)
05
0.5% FS
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Instruction Manual Tek-Sub 4800D
3 Installation
Installation must comply with local installation requirements and local
This section covers instructions on installation and commissioning. Installation of the device must be carried out by trained, qualified specialists authorized to perform such work.
CAUTION
•
electrical code.
• Do not switch on the power supply to the transmitter while installing it. It may cause injury to the operating personnel.
• Prevent mud and sand from accumulating on the sensor probe. Otherwise, the transmitter would get damaged.
3.1 Considerations to be taken before Installation
Before installation make sure that:
• The static pressure produced by the liquid at the installation site does not exceed the transmitter’s FS range.
• The measuring liquid is compatible with the transmitter’s construction material.
• While mounting the transmitter, avoid areas subject to electrical noise,
excessive vibrations and radiant heat.
3.2 Installation Method
The Tek-Sub 4800D Wastewater Submersible Level Transmitter is suitable for static, as well as flowing liquid level measurement applications. The transmitter is factory calibrated and ready for operation without adjustment
• Ensure that the measuring liquid is compatible with the transmitter’s
construction material.
• Insert the transmitter vertically down in the measurement container
• Ensure that the transmitter is completely immersed in the liquid for maximum
accuracy
• Ensure the protection cap holes are not blocked due to suspended particles in the measuring liquid
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3.2.1 Installation in Static Liquid
Fig.4 shows the installation method used in case of static liquid.
Fig.4. Installation in static liquid
• Place the transmitter away from liquid resource to avoid effects of vibration and pressure influence. A stilling well is recommended for the best results.
• Remove the transmitter from the tank or use a stilling well while pumping the liquid.
3.2.2 Installation in Flowing Liquid
Fig 5 shows the installation method used in case of flowing liquid in an open channel, for example, reservoir area or river channel.
Fig.5. Installation in flowing liquid
A stilling well is recommended when there is flowing liquid. A stilling well will dampen disruptions and provide a steady level for accurate measurement
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Instruction Manual Tek-Sub 4800D
4 Electrical Connections
This section provides general information on the electrical connections of the Tek-Sub 4800D Wastewater Submersible Level Transmitter.
An external power supply delivering 12-30 VDC with minimum current capability of 40 mA DC (per transmitter) is required to power the control loop.
Fig.6 illustrates the connection of the power supply, transmitter, and receiver.
The maximum receiver load resistance (RL expressed as:
RL
Use of a shielded cable is recommended for control loop wiring.
Ensure proper ground connection. Improper grounding may lead to damage or poor signal integrity.
= Vs – 12V / 0.02A
max
Fig.6. Power supply connections
) for the DC power supply voltage (Vs) is
max
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Instruction Manual Tek-Sub 4800D
5 Operation
This section covers operation techniques and guidelines.
• The Tek-Sub 4800D Wastewater Submersible Level Transmitter can be operated without any adjustment.
• Make sure that the installation and electrical connections are done properly before operation.
• Connect the excitation and operate the device.
• Wait for atleast 30 minutes after connecting the excitation for reliable output
signal.
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Instruction Manual Tek-Sub 4800D
6 Maintenance
This section covers maintenance techniques and guidelines.
The Tek-Sub 4800D Wastewater Submersible Level Transmitter does not require regular maintenance, however the following points must be observed for better operation and reliability.
• Make sure that the wire connection is reliable.
• Make sure that the cable is not damaged.
• Clean the protection cap and diaphragm space regularly.
• Do not pull the cables violently or poke the diaphragm with metal objects.
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7 Troubleshooting
Symptom
Corrective Action
No Output or
Check the polarity of the terminals. Check for intermittent shorts, open circuits and multiple grounds.
Check that the adequate voltage is supplied to the transmitter. The transmitter requires 12 to 36 VDC.
Verify sensor positioning and consider sensor cleaning.
High Output
Check for dirty or defective terminals and interconnecting pins.
Check that the adequate voltage is supplied to the transmitter. The transmitter requires 12 to 36 VDC.
Check the sensor limits to ensure that input to the sensor is within the range.
Erratic Output
Check that the adequate voltage is supplied to the transmitter. The transmitter requires 12 to 36 VDC.
Check the polarity of the terminals. Check for intermittent shorts, open circuits and multiple grounds.
Verify sensor positioning and consider sensor cleaning.
This section provides troubleshooting techniques for most common operating problems.
Low Output
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