ddtop UHC Magnetic Level Gauge User manual

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UHC | Bb-Remote Transmission
MAGNETIC LEVEL GAUGE
Operating Manual
UHC-Bb-DT-JS-1027-2018(A)

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PREFACE
Thank you for choosing the products of Dandong Top Electronics Instrument (Group)-Co.,Ltd.
This operation manual provides you with important information on installation, connection and
commissioning as well as on maintenance, troubleshooting and storage.
Please read it carefully before installation and commissioning and keep it as part of the product
near the meter for easy reading.
This manual can be downloaded by entering the version number at www.ddtop.com.
If the instructions are not followed, the protection provided by the meter may be destroyed.
Trademark, Copyright and Restriction Instructions
Dandong Top Electronics Instrument (Group) Co.,Ltd.®, Dandong Top Pump Co.,Ltd.®,
DDTOP® are registered trademarks of the company.
The performance specifications of the meter are effective as of the date of publication and are
subject to change without notice. Dandong Top Electronics Instrument (Group)Co.,Ltd. reserves the
right to modify the products described in this manual at any time without prior notice.
Quality Assurance
Dandong Top Electronics Instrument (Group) Co.,Ltd. guarantees that all variable area flow meters
have no defects in materials and manufacturing processes within one year from the date of delivery.
During the warranty period, if the product returns with quality problems and the claim is
determined by the manufacturer to be within the scope of warranty, Dandong Top Electronics
Instrument (Group) Co.,Ltd. is responsible for repair or replacement of the buyer (or owner) free of
charge. Dandong Top Electronics Instrument (Group) Co.,Ltd. is not responsible for the costs caused
by improper use of equipment, labor claims, direct or subsequent damage and installation and use
of equipment. In addition to the special written warranty certificate for certain products of Dandong
Top Electronics Instrument (Group) Co.,Ltd., Dandong Top Electronics

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Instrument (Group) Co.,Ltd. does not provide any express or implied warranty.
Quality
Dandong Top Electronics Instrument (Group) Co.,Ltd. has passed the ISO9001 quality system
certification. The whole process of product production is strictly in accordance with the scope of
the quality system, providing the strongest guarantee for product and service quality.

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Contents
1. Safety Tips..................................................................................................................................................................5
2. Product Descriptions ..............................................................................................................................................5
3. Technical Parameters .............................................................................................................................................6
4. Outline Dimension Diagram ................................................................................................................................7
5. Unpacking and Inspection....................................................................................................................................8
6. Installation..................................................................................................................................................................8
7. Configuration ......................................................................................................................................................... 10
8. Precautions ............................................................................................................................................................. 15
9. Fault Analysis and Troubleshooting ............................................................................................................... 16
10. Disassemble........................................................................................................................................................ 16
11. Product Certification........................................................................................................................................ 16

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1. Safety Tips
For safety reasons, it is expressly prohibited to modify or change the product without authorization.
Repair or replacement is only allowed to use the accessories specified by the manufacturer.
1.1 The explosion may cause death or serious injury.
When installing the device in an explosive environment, be sure to comply with applicable local,
national and international standards, codes and regulations. Ensure that the equipment is installed
in accordance with intrinsically safe or non-flammable site operating procedures.
1.2 Process leakage may cause serious injury or death.
If the process seal is damaged, the medium may leak at the connection.
1.3 Failure to follow the safety installation guidelines may result in death or serious injury.
All operations described in this manual must be carried out by trained and qualified or
end-user-appointed personnel.
2. Product Descriptions
2.1 Main Structure Figure 1-Remote Transmission
Figure 1 Product Constructure

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1. Meter head assembly, converter circuit and LCD screen
2. Housing, protect the sensor circuit
3. Reed switch-resistance component, sensor circuit
2.2 Working Principle
The magnetic float in the measuring tube moves up and down with the fluid level or interface level
of the medium, so that the resistance value in the sensor circuit changes linearly, and then the
resistance value change is converted into a 4-20mA standard DC signal through the converter
circuit in the meter head assembly. LCD display or output to the control room through the output
terminal to achieve long-distance transmission of liquid level.
2.3 Packaging
Please take the packaging waste to a special recycling facility。
2.4 Lifting and Transportation
Please use quality lifting equipment and lifting straps, and pay attention to safety.
2.5 Storage
Storage temperature -20℃~40℃
Storage humidity≤40%
3. Technical Parameters
3.1 Key Performance
3.1.1The remote transmission device has passed the national explosion-proof certification
Certification mark：Intrinsically safe Ex ia ⅡC T1～T5/T6 Ga；
Flameproof Ex d ⅡC T1～T5/T6 Gb
3.1.2 Executive standard
GB/T 25153-2010 Magnetic level gauge for chemical pressure vessel
JB/T 12957-2016 Magnetic level gauge

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3.2 Main Parameters
Measuring Range
0~6000mm（＞6000mm special customized）
Power Supply
24V DC
Output
4~20mA DC（with HART）
Load Characteristics
See load characteristics chart (Figure 2)
Ambient Temperature
－40℃~+80℃
Working Temperature
－40℃~+200℃（When T≥150℃, the transmitter does not
allow heat preservation）
Accuracy
±5mm
Power Inlet
M20×1.5(female thread) or as customer requirement
Explosion-proof Type
Intrinsically safe Ex ia ⅡC T1～T5/T6 Ga
Flameproof Ex d ⅡC T1～T5/T6 Gb
Ingress Protection
IP66
Figure 2 Load Characteristic Diagram
4. Outline Dimension Diagram
If special size is required when ordering, the actual size shall prevail.

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Figure 3 Remote Transmission Device
5. Unpacking and Inspection
5.1 Precautions for unpacking inspection
5.1.1 Check whether the product nameplate is consistent with the packing list information Figure 4
Figure 4 Product Nameplate
5.1.2 Check the quantity and material of each part against the packing list.
5.2 Content of Inspection
Check the appearance of the instrument for defects, damage and other abnormalities
6. Installation
6.1 Installation Tools
Hose clamp, screwdriver

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6.2 Installation and operation process - Figure 5
Figure 5 Installation
6.2.1 When installing the remote transmission device, as shown in Figure 5, the zero point full scale
of the remote transmission device (marked at the factory) and the O scale full scale of the on-site
indicator on the measuring tube are one-to-one correspondence, and then fixed with a hose
clamp.
6.2.2 Remote transmission device wiring: after removing the cover, you can connect according to
the wiring diagram in Figure 6
Figure 6 Transmitter Wiring Diagram

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7. Configuration
7.1 Transmitter Configuration
This section mainly introduces how to use the 3 local keys (Enter key←┘), (up key "↑"), (down key
"↓"), combined with LCD display to configure internal parameters.
7.1.1 LCD display function overview
See (Figure 7-1) for full screen information. The variables that can be displayed on the LCD screen
include current (Figure 7-2), percentage (Figure 7-3) and main variable (Figure 7-4). You can set to
display a single variable, or you can set the percentage and the main variable to cycle display, and
the effective digits of the decimal part can be set (0, 1, 2, 3, 4 decimal places). The display mode is
set by 475 configuration software or button. If the percentage and main variable are set to be
displayed cyclically, the LCD will display these two variables alternately with a period of 3 seconds.
Figure 7-1 Full LCD display Figure 7-2 Current display
Figure 7-3 Percentage display Figure 7-4 Main variable display
7.1.2 LCD Display Symbol Description
①If it is in HART communication status, the symbol on the right corner of the LCD
screen will flash.

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②If it is in root output, the LCD will display .
③If a fixed output current is set, the LCD will display .
④If the write protection is activated, the LCD will display .
⑤The three "888" display bits in the lower left corner of the LCD display the temperature of
the electronic module and the menu number during configuration.
7.1.3 Button function description
There are a total of three buttons on the LCD panel. The three buttons are the enter key "←┘", the
down key "↓", and the up key "↑".
● The "↑" and "↓" keys are used to prompt the increase or decrease of data bits and the shift
of the decimal point;
● The "←┘" key is used to enter the prompt data setting interface and save the data.
7.1.4 Description of parameter configuration
Long press "←┘". When the "888" character in the lower left corner shows 1～17, it indicates that
the transmitter is in the field configuration mode with menu rotation. At this time, you can input the
initialization code, modify the parameters, calibrate the instrument or perform migration by
pressing.
The data setting process utilizes:
The "←┘" key is used to select the digit and decimal point to be edited and confirm the final
save.
(Flashing is selected)
The "↑" key is used to increase the flashing digits to cycle from 0-9 and move the decimal
point to the right.
The "↓" key is used to decrement the flashing digits to cycle from 9-0 and move the decimal
point to the left.
The setting process is as follows:
(1) Long press the'←┘' key to enter the data configuration interface. At this time, the lower left
corner displays '01', and the data line displays '00005'. When the'←┘' key is pressed again, the
symbol bit starts to flash, indicating that the symbol can be modified Bit.

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(2) If you press the ‘↑’ key or ‘↓’ again, you can switch the sign of the data.
(3) Press the'←┘' key again, the symbol is selected and the first digit starts to flash, indicating that it
can be modified. Press for a long time or repeatedly press the'↑' key or'↓' to set the number
between 0-9 between cycles.
(4) Press the ‘←┘’ key again, the first digit is set and the second to fifth digits can be set in
sequence at the same time. The setting method is exactly the same as the first digit.
(5) After setting the fifth digit, press ‘←┘’ to start setting the decimal point. The decimal point starts
to flash at the same time, indicating that the decimal point can be set. At this time, press the ‘↑’ key
or ‘↓’ to move the position of the decimal point to the right or left to cycle through.
(6) After the decimal point is set, press the ‘←┘’ key, the up and down arrows on the left will light
up, indicating that the setting is saved.
(7) Press ‘←┘’ again to restart setting data.
7.1.5 Key function code quick reference table
When using button configuration on site, the two "888" display characters in the lower left corner of
the LCD indicate the current setting menu number, which is the setting function performed by the
current button. The corresponding relationship is:
"888" display in the lower left
corner
Set variable
0 or empty
Normal Display
1
Enter the operation code (00911 initialize the meter)
2
Set unit
3
Set the lower limit of the range LRV
4
Set the upper limit URV
5
Set damping time
8
Density (standby)
9
Any point migration input compensation value, compensation
value = P actual measurement-P pre-output
11
LRV calibration
12
URV calibration
17
View sensor value
The instrument calibration, upper and lower limits of range and damping setting can be completed
according to the description in 7.1.4 Data Setting Method"
7.1.6 Unit Setup

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The units that can be set are: m, cm, mm, feet, and inch.
①Long press the ‘←┘’ key to enter the configuration mode (first menu No. 1 is displayed,
the up and down arrows on the left are lit).
②Press the "↑" key to switch the menu to No. 2, and the current unit symbol is displayed in
the lower right corner.
③Press the "←┘" key again, and the unit starts to blink. At this time, press the ‘↑’ key or ‘↓
to switch to the unit you want to set.
④Press the "←┘" key again, the unit setting is completed and the up and down arrows on
the left will light up.
Unit Setup
7.1.7 Range setting
Set the lower limit of the range LRV.
①Long press the ‘←┘’ key to enter the configuration mode (first menu No. 1 is displayed,
the up and down arrows on the left are lit)
②Press the "↑" key to switch the menu to No. 3, and the LCD will display the current LRV
value.
③Press the "←┘" key again, and the symbol starts to flash. At this time, press the ‘↑’ key or
‘↓’ to switch to the sign you want to set.
④Press the "←┘" key to complete the symbol setting and start to set the highest digit of the
range. At this time, press the "↑" key or "↓" to increase or decrease the current flashing digit
and press the "←┘" key confirm, set other digits and decimal points in sequence, and the

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menu item setting is completed when the up and down arrows on the left light up.
Set the upper limit URV
Switch the menu to No. 4, and the LCD displays the current URV value at the same time, and then
repeat the steps ③and ④in 7.1.6 to set.
Range Setting
7.1.8 Damping setting
Switch the menu to No. 5, and the LCD will display the current damping value at the same time, and
then repeat the steps ③and ④in 7.1.6 to set until the completion.
7.1.9 Two-point calibration
LRV calibration
①First adjust the PV value to the zero position (Move the magnetic float to zero)
②Switch the menu to No. 11, and the LCD will display the current calibration position value at the
same time, and then repeat ③④ in 7.1.6 to input the zero point value for zero point position
calibration.
③Press the "←┘" key until the up and down arrows on the left light up the zero position
calibration is completed
URV calibration
②First adjust the PV value to the full-scale position (Move the magnetic float to zero)
③Switch the menu to No. 12, and the LCD will display the current calibration position value at
the same time, and then repeat ③④ in 7.1.6 to input the full scale value for full scale position
calibration

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③Press the "←┘" key until the up and down arrows on the left light up the full scale position
calibration is completed
7.1.10 Move at any point
Menu ‘9’ can realize any point migration function. The user can migrate the current PV value to any
point within the range. (Enter compensation value) The setting process is as follows:
①Long press the ‘←┘’ key to enter the configuration mode (first menu No. 1 is displayed, the up
and down arrows on the left are lit)
②Press the "↑" key to switch the menu to ‘9’ and the LCD will display the current PV
compensation value
③Press the "←┘" key again, and the symbol starts to flash. At this time, press the ‘↑’ key or ‘↓’
to switch to the sign you want to set.
④Press the "←┘" key to complete the symbol setting, and at the same time the highest digit of
the parameter to be set starts to flash. At this time, press the'↑' key or'↓' to increase or decrease
the current flashing digit, and press the "←┘" key to confirm and start the next digit setting, and set
other digits and decimal points in sequence. When the up and down arrows on the left side light up,
the menu function setting is complete.
Compensation value calculation method:
Compensation value = PV actual measurement-PV pre-output
Note: The key configuration process will not automatically exit and it is needed to manually exit the
key configuration. The method is to continuously press the ‘↑’ key or ‘↓’ key in the switching menu
state to increase or decrease the menu. When the menu is greater than 17 or less than 1, exit the
button configuration state and enter the normal output mode.
8. Precautions
8.1 For the remote transmission device with heat insulation pad, the heat insulation pad should
be placed between the remote transmission device and the measuring tube during installation;
8.2 When the temperature is ≥150℃, it cannot be kept together with the remote transmission
device during heat preservation;
8.3 Make sure that the power supply is safe and reliable, and the power supply should be
connected in accordance with the correct positive and negative poles;

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8.4 The remote transmission device is not suitable to work in a strong magnetic field other than
the magnetic field of the magnetic float;
8.5 After configuration, tighten the display and power cover to prevent the meter from getting
wet.
9. Fault Analysis and Troubleshooting
10. Disassemble
10.1 Warning
Before disassembling, pay attention to dangerous process conditions, such as pressure, high
temperature, corrosive or toxic media in the container, etc.
Please refer to the instructions in the chapter 6.2 Installation Operation Process and 7.1 Electrical
Wiring, and remove the components in the reverse order of the operation steps.
10.2 Waste Removal
Please follow the current regulations in each region for waste disposal.
11. Product Certification
Failure Phenomenon
Cause Analysis
Troubleshooting method
The remote
transmission device
has no signal output or
inaccurate output
1. The remote transmission device has no
power signal input
2. The components in the remote
transmission device circuit detection board
are damaged
1. Turn on the power
2. Replace the circuit
detection board

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