HollySys HT5 Series User manual

Please read the manual before using the product
HT5 series metal tube flowmeter
Instructions for use

CONTENTS
1、Instructions.....................................................................................................................1
1.1 Intended use .........................................................................................................................1
1.2 Safety instructions ..........................................................................................................1
1.3 Copyright and data protection ...........................................................................................1
1.4 Technical Support. .............................................................................................................1
2、Device description.........................................................................................................2
2.1 Brief description .................... ... .......................................................................................2
2.2 Structure principle .............................................................................................................2
2.3 Features .......... ... ...............................................................................................................3
2.4 Capabilities .......................................................................................................................3
2.5 Technical Parameters . .........................................................................................................4
2.6 Model Description ...............................................................................................................7
2.7 Flow Meter ...........................................................................................................................8
2.8 Indicator Type. ....................................................................................................................9
2.9 Indicators Structure and disassembly ...................................................................................11
2.10 Float damping ......................................................................................................................11
2.11 Installation conditions .....................................................................................................12
3、Electrical connections..................................................................................................13
3.1 Safety instructions ..............................................................................................................13
3.2 Conversion module connection ..................................................................................................13
3.3 Limit switch connection.. ......................................................................................................14
4、Dimensions...........................................................................................................................15
4.1 Basic and Heat insulation Dimensions HT50 . .........................................................................15
4.2 Dimensions HT50/RP......................................... ........ .......... ........ ....................................16
4.3 Dimensions HT51.......................................................................... …..................................16
4.4 Dimensions HT52.................................... ............................................................................16
4.5 Dimensions HT53................................................ ....... ........... ............................................17
4.6 Dimensions HT54........................................................... ...... ..............................................18
4.7 Dimensions HT55...................................................... ...... ...................................................18
4.8 Dimensions HT56............................... ........................ ........................................................19
5、 Installation ..............................................................................................................................20
5.1 Installation conditions ........................................................................................................20
5.2 Protection category .............................................................................................................21
5.3 Installation diagram ............................................................................................................21
6、Maintenance .......................................................................................................................23
6.1 Indicator . ..........................................................................................................................23
6.2 Measuring tube .....................................................................................................................24
7、Caliber ..............................................................................................................................26
7.1 Determine the correction coefficient Kx ..................................................................................26
7.2 Determine float diameter and measurement range .......................................................................27
Appendix Selection Specification.....................................................................................28

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Metal tube flowmeter
1. Terms and Conditions
1.1 Intended use
Metal tube flowmeter in mind, also known as variable area flowmeter (hereinafter referred
to as meter).The variable area flowmeter are suitable for measuring gases, vapours and
liquids.Meter can be used to measure the continuous cleaning of gases and liquids, especially
for flow measurement and control of low flow, low flow rate, harsh media conditions. Not
used to measure solid particles and highly viscous media. If the media conditions are quite
poor, when ordering the instrument, please contact me to confirm the instrument meets its
requirements. The devices are particularly suitable for the measurement of:Water、
Hydrocarbons、Corrosion protection agents and lubricants、Chemicals and additives、Solvents、
Superheated steam、Air、Industrial gases and so on.
Meter is limited to medium conditions specified under meter data (temperature, pressure,
media and the environment etc.).
WARNING!
The operator himself bears the sole responsibility for the intended use of the device
regardingthe suitability and the corrosion resistance of the used materials against the
measured fluid.The manufacturer is not liable for any damage resulting from improper use
or use for other thanthe intended purpose.
1.2 Safety instructions
Using this product, please read the instructions carefully to avoid improper use, causing
injuries to the user, damage equipment, cause
Accidents. Meter used in hazardous areas, must carefully review whether the nameplate before
commissioning explosion-proof requirements, proof mark, should be properly installed in
accordance with the requirements of explosion protection, Using instruments, to avoid
security risks, ensure safety in production.

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1.3 Copyright
This article belongs to all companies, the company has to explain, change, improve, improve
rights. Subject to change without
Notice.
1.4 Technical Support
When users select a product, please read this manual carefully and combine your conditions
select the appropriate function of the instrument.If you have technical problems in the
selection process or read or explained in the manual is not clear where you need help, please
contact our technical department, you will be satisfied with the technical support and
ultimately help you solve all the questions.
2. Product description
2.1 Description
HT5series metal tube is based on a variable area flow meter float position measurement.
All-metal structure, modular design, because of its small size, small pressure loss, range
ratio (10: 1), easy installation and maintenance, etc., it is widely used in various
industries complex, harsh environment, low flow, low flow rates, a variety of harsh
conditions of media flow measurement and process control.
HT5series metal tube using the international advanced non-contact magnetic sensor,
and with a single-chip microprocessor system, enabling the liquid crystal display,
cumulative, remote output (4 ~ 20mA), upper and lower alarm output function the instrument
has high accuracy and reliability, and can replace imported the same type of Meter, and
has a cost-effective, multi-parameter calibration, power-down protection and so on.
HT5series metal tube series of products for different user needs, different
occasions, for a variety of measurements in the form of user-selectable; divided by output
in the form of local indication type, output type remote control alarm type; according to
the requirements of explosion-proof classification, can be divided into ordinary type,
intrinsically safe, explosion-proof isolation-type three; site process flow according to

HT5 series metal tube flowmeter
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user requirements, vertical mount (HT50), progress under-mount (HT51), side into the side
mount (HT52), end into the side-mounted (HT53), threaded connection type (HT54),
horizontal-mounted installation (HT56R / L) and other options.
2.2 Structure principle
HT5series metal tube composed of two parts:
Measuring tube - magnetic couplings, sensors;
Indicators - signal conversion, conditioning, or a
digital display indicating the scale;
Wetted material of the measuring tube there are four:
stainless steel, Hastelloy, titanium, stainless steel
lining PTFE; the user may require different process
pressure corrosive media and select different wetted material to meet process pressure
corrosion and media needs. Depending on the measurement requirements, users in the selection,
you can select a different combination of indicators, to achieve different measurement
requirements. Specific type indicator corresponding function indicator see chapter.
Measuring principle
Relative to a medium flows
through the sensor fixing
condition, when the flow
rate reaches a certain
flow design flow range,
the float rises to a position of the cone relative to a stationary, then flow area changes,
the float suffered three a force equilibrium (gravity + = thrust buoyancy), this position
by the close magnetic coupling transmission shaft driven pointer and components, completion
pointer flow indication, through the modular design of the converter is converted to the
flow rate corresponding to 4 ~ 20mA / Hart output. Change the position of the float, that
reflects the changing media traffic.

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2.3 Features
 Simple and practical, low-cost installation, in situ measurements without
auxiliary power;
 General concept of prevent explosion: explosion-proof and intrinsically safe
isolation integration;
 Modular design, easy maintenance, maintenance-free normal use;
 A variety of flow: horizontal, down-up, up- down, side to side, a bottom side
optional;
 All-metal structure, seismic, pressure, temperature, corrosion resistance;
 Variety of connections: flanged, threaded, fast card and other equipment;
 Range ratio: 10: 1 special can be 20: 1;
 Variety of power supply (220V AC, 24V DC, battery-powered);
 Material specifications: 304, 316, 316L, Hastelloy, PTFE lined, etc;
 Standard output (current 4 ~ 20mA, available with HART communication);
2.4 product function
LCD: You can customize the display of instantaneous value, the accumulated value,
current output value, percent of range;
Output signal: 4 ~ 20mA two-wire output;
HART Communication: Supports universal HART protocol;
Configuration features: engineering units, state media, medium density, operating
pressure, operating temperature, the density of the float,
measuring range, display variables, alarm and other protection
configuration; and having cleared the cumulative flow, zero
correction;
Protection function: to set upper and lower limit guard values; below the lower limit
or above the upper limit output 3.8mA or 22mA.
Monitoring functions: on-line monitoring of instantaneous value, the percentage of the
output current, the accumulated value of the like;

HT5 series metal tube flowmeter
5
Calibration function: analog output current calibration;
Calibration function: You can choose from 5 to 16 points calibration;
Host variable zero: zero trim function;
Power-down protection: In case of power failure without loss of data;
LCD backlight: LCD with backlight can be better at night or in dark light observation
instruments;
The cumulative amount of storage: storage and memory cycles accumulated value can be
changed;
Situ configuration functions: engineering units, state media, medium density,
operating pressure, operating temperature, the density of the float,
measuring range, display variables, alarm and other protection
configuration and having accumulated traffic cleared, zero
correction, data recovery Features;
Current output trim: capable of 4mA and 20mA current trimming;
Data backup and recovery: the manufacturer of the instrument configuration, after
calibration, the original factory backup information, such as on-site personnel
due to non-normal adjustment resulting instrument does not work, you can enter the
password "5942", enter the data operations restore function, select the factory
information transferred to the manufacturer, and cover the illegal user error
message, normal operating state.
Parameter setting can be achieved: multi-parameter calibration, automatic ambient
temperature compensation function;
User Fixed: users can amend their own 5-point field (field regulation meter curve);
2.5 Technical Parameters

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Product
Model
Technical
Parameters
HT50
HT51 HT52 HT53
Meter diameter
DN15~DN150
Measuring range
water （20°） 16~150000L/h；
air （20°0.1013MPa ）0.5~5000m3/h
Range ratio
Standard ：10:1；Particular ：20:1
Accuracy
1.0；1.5
Mounting height
Standard :250mm( Particular, please consult the manufacturer )
Wetted materials
R0(316)R1(304)RL(316L)RP(PTFE lining )
RC( Hastelloy C）RT（Ti titanium liner ）
R0(316); R1(304) ; RL(316L) ;
Pressure Level
Standard ：DN15~DN50 4.0MPa；
DN80~DN200 1.6MPa；
Particular：DN15~DN50 5~42MPa；
DN80~DN150 2.5~16MPa；
Jacketed pressure rating ：1.6MPa ；
Standard ：
DN15~DN50 4.0MPa；
DN80~DN200 1.6MPa；
Particular ：
DN15~DN50 5~42MPa；
DN80~DN100 2.5~25MPa；
DN150 2. 5~16MPa
Connection
Standard flanges ：HG/T20592-2009；Or specified by the user of any standard flanges
Ambient temperature
-40℃~120℃， Flameproof ：-20℃~+40℃， Intrinsically Safe ：-20℃~+40℃
Medium temperature
Standard -40℃～+120℃； Particular -80℃～+350℃； PTFE lining ≤80℃
Signal output
Two-wire4 ~ 20mA output;Hart communication;Two-wire sensor threshold
switch ,8VDC power supply;
Power supply
Standard :24VDC(10.8VDC～28VDC) AC type :220VAC(85～265VAC)
Battery type :3.6V-9Ah lithium battery
Explosion levels
Intrinsically Safe ：Exia II CT6 Ga Flameproof ：Exd II CT6 Gb
Protection class
IP65
Medium viscosity
DN15：≤5mpa.s（H15.1~15.3)
≤30mpa.s（H15.4~15.9)
DN25：≤250mpa.s
DN50~DN150：≤300mpa.s
Display method
Scene pointer display; LCD
Electrical connections
1/2”NPT；M20×1.5；

HT5 series metal tube flowmeter
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Product
Model
Technical
Parameters
HT54
HT55
Meter diameter
DN15~DN100
DN15~DN100
Measuring range
water（20°）16~100000L/h
air（20°0.1013MPa）
0.5~3000m3/h
water（20°）16~100000L/h
air（20°0.1013MPa）
0.5~3000m3/h
Range ratio
Standard ：10:1；Particular ：20:1
Accuracy
1.0；1.5
Mounting height
Standard :250mm( Particular, please consult the manufacturer )
Wetted materials
R0:316;R1:304;RL:316L;
R0(316); R1(304) ; RL(316L) ;
Pressure Level
Standard ：DN15~DN50 4.0MPa
Particular, please consult the
manufacturer
Standard ：DN15~DN100 1.6MPa
Particular, please consult the
manufacturer
Connection
Pipe thread ；Threaded SMS
Jacket (quick connector)
Ambient temperature
-40℃~120℃， Flameproof ：-20℃~+40℃，Intrinsically Safe ：-20℃~+40℃
Medium temperature
Standard -40℃～+120℃； Particular -80℃～+350℃
Signal output
Two-wire4 ~ 20mA output;Hart communication;Two-wire sensor threshold
switch ,8VDC power supply;
Power supply
Standard :24VDC(10.8VDC～28VDC) AC type :220VAC(85～265VAC)
Battery type :3.6V-9Ah lithium battery
Explosion levels
Intrinsically Safe ：Exia II CT6 Ga Flameproof ：Exd II CT6 Gb
Protection class
IP65
Medium viscosity
DN15：≤5mpa.s（H15.1~15.3)
≤30mpa.s（H15.4~15.9)
DN25：≤250mpa.s
DN50~DN100：≤300mpa.s
Display method
Scene pointer display; LCD
Electricalconnections
1/2”NPT；M20×1.5；