HITROL HTM (HPV)-20N Series User manual

HTM(HPV)-20N Series
HITROL CO., LTD. 1
HITROL CO., LTD.
HEAD OFFICE, FACTORY, R & D INSTITUTE
HITROL CO., LTD. 141, Palhakgol-gil, Jori-eup
Paju-si, Gyeonggi-do, Korea
TEL.: [phone]
FAX : [phone]
www.hitrol.com
INSTRUCTION MANUAL
VIBRATION TYPE LEVEL SWITCH
HTM (HPV)-20N Series
Doc. no. : HTM(HPV)20N_IM_Eng_Rev.2.1
Issue date: 2019. 12

HTM(HPV)-20N Series
HITROL CO., LTD. 2
Table of Contents
Product Overview ••••••••••••••3
Characteristics ••••••••••••••••3
Operating Principle and Outline •••••••3
Specifications ••••••••••••••••4
Weather-Proof Version ∙∙∙∙∙∙∙∙∙∙∙∙4
Ex-Proof Version ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4
Dimensions •••••••••••••••••• 5
Weather-Proof Version ∙∙∙∙∙∙∙∙∙∙∙∙5
Ex-Proof Version ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 6
Attachment and Cautions ••••••••••7
Installation on Side ∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 7
Installation on Top∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 7
Technical Data ••••••••••••••••9
AMP and Wiring ••••••••••••••10
Settings ••••••••••••••••••• 10
Auto Setting ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 10
Activation Point Setting ∙∙∙∙∙∙∙∙∙∙∙ 11
Activation Point Adjustment ∙∙∙∙∙∙∙∙11
Relay Delay Time Adjustment ∙∙∙∙∙∙∙11
Relay Out Control ∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 11
LED Color and States ••••••••••••12
Use •••••••••••••••••••••12
Maintenance ••••••••••••••••12
Failure Check ••••••••••••••••13
Cautions for Removal •••••••••••• 13
Cautions for Transportation and Assembly •13
Cautions for Installation ••••••••••• 13
Cautions for Grounding ••••••••••• 14
Cautions for Lead-In Method of External Wire
(Ex-Proof Product) •••••••••••••• 14
Safety and Environment ••••••••••• 14
Label ••••••••••••••••••••15
User Training ••••••••••••••••15
Warranty and Contact •••••••••••• 15

HTM(HPV)-20N Series
HITROL CO., LTD. 3
Product Overview
The HTM(HPV)-20N Series is a tuning fork-type vibrating level switch that
consists of one membrane and two stainless forks to detect powder and
output the state using the relay contact, which is applicable for alert and
process control.
Characteristics
Level of different powder types can be detected.
It can measure powder particles, ranging from small to large.
The membrane is made of stainless steel with a solid structure and a high
bearing capacity.
The wiring is simple.
It is customizable with the key button.
It has a simple structure for easy maintenance.
It has pressure-resistant and dust ex-proof structures (HPV-Series).
Operation Principle
and Outline
A certain level of electric signal is transferred to the piezo sensor so as to
vibrate the tuning fork. The vibration of the latter is reduced when it comes
in contact with the subject. As such, the electric signal is reduced to stop the
oscillation of the piezo sensor.
The electric signal is detected by the electronic circuit to operate the relay,
so that the state can be detected with the contact output.

HTM(HPV)-20N Series
HITROL CO., LTD. 4
Specifications
Weather-Proof Version
Model
HTM-20N-A
HTM-20NH-A
HTM-20N-B
HTM-20NH-B
HTM-20N-C
Mounting
Screw
Screw, Flange
Max. Temperature
80°C
120
80°C
120°C
60°C
Max. Process Pressure
10 kg/cm2
2 kg/cm2
Power Source
AC 90–240 V , 50/60 Hz (Std.) / DC +24 V
Power
Consumption
AC
Standby
AC 110 @ 5.1 W / AC 220 V @ 8 W
Active
AC 110 @ 6.8 W / AC 220 V @ 9 W
DC
Standby
DC + 24 V @ 1.8 W
Active
DC + 24 V @ 2.7 W
Output Signal
DPDT
Enclosure
Weatherproof, IP65
Approvals
CE Mark
Wetted Part Material
SCS 14
SUS 304 + SCS14, SUS 316L + SCS14
Process Connection
PT 1–1/2''(M)
PT 1–1/2'' (M) (Std.), 2'' FLANGE
Housing; Cable Entry
AL.; 2-PF 3/4'' (F) (Std.)
Installation
Side
Side and Top
Top
Contact Rating
AC 250 V, 5 A / DC 30 V, 5 A
Ex-Proof Version
Model
HPV-20N-A
HPV-20NH-A
HPV-20N-B
HPV-20NH-B
Mounting
Screw
Screw, Flange
Max. Temperature
80°C
120°C
80°C
120°C
Max. Process Pressure
10 kg/cm2
Power Source
AC 90–240 V , 50/60 Hz / DC + 24 V
Power
Consumption
AC
Standby
AC 110 @ 5.1 W / AC 220 V @ 8 W
Active
AC 110 @ 6.8 W / AC 220 V @ 9 W
DC
Standby
DC + 24 V @ 1.8 W
Active
DC + 24 V @ 2.7 W
Output Signal
DPDT
Enclosure
Ex-Proof (Ex d IIC T6), IP65; Ex tD A21 IP65 T 90℃ / T 130℃
Approvals
CE Mark, KOSHA-Ex
Wetted Part Material
SCS 14
SUS 304 + SCS14, SUS 316L +
SCS14
Process Connection
PT 1–1/2'' (M)
PT 1–1/2'' (M) (Std.), 2'' FLANGE
Housing; Cable Entry
AL.; 2-PF 3/4'' (F) (Std.),
Installation
Side
Side and Top
ContactRating
AC 250 V, 5 A / DC 30 V, 5 A

HTM(HPV)-20N Series
HITROL CO., LTD. 5
Dimensions
<WEATHER-PROOF>
HTM-20N(H)-A
HTM-20N(H)-B
HTM-20N-C
<SCREW TYPE>
<FLANGE TYPE>

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HITROL CO., LTD. 6
<Ex-PROOF>
HPV-20N(H)-A
HPV-20N(H)-B
HTM-20N(H)-B
<SCREW TYPE>
<FLANGE TYPE>

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Attachment
and Cautions
The HTM(HPV)-20N_Series is installed on the top or the side of a container and silo
to detect the upper or the lower limit, respectively. The level switch can be installed on
any material, so it is applicable to ferrous or nonferrous tanks and silos.
When installing this product, consider the following.
Installation on Side (Horizontal Installation)
A-Type and B-Type can be installed on the side of a tank.
A screw-socket shape under 24 mm must be used for installing the A-Type on the
side. Otherwise, dust or foreign matter may enter, resulting in a malfunction. The
extended B-Type supports the screw and the flange.
Maximum length must be 500 mm or less for a side installation.
To prevent buildup, the product should be installed at an inclination of 15° or more.
In addition, the wing of the sensor must be installed vertically. (Refer to Fig. 1.)
Avoid the inlet to install the sensor and maintain enough distance to prevent direct
contact with the content. (Refer to Fig. 1.)
Cable lead-in inlet must face the direction shown in the figure. (Refer to Fig. 1.)
If the housing temperature rises because of direct sunlight, install a sun cover to
prevent such occurrence. (Refer to Fig. 1.)
Installation on Top (Vertical Installation)
Use the B-Type and the C-Type for installation on top of a container and silo. The
B-Type and the C-Type can be installed with the socket and flange on top.
Avoid the inlet to install the sensor and maintain enough distance to prevent direct
contact with the content.
If the housing temperature rises because of direct sunlight, install a sun cover to
prevent such occurrence.

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Avoid the inlet when installing the sensor. To install
it at the inlet, install the protector on top to prevent
direct contact with the content and damage to the
sensor.
SUN COVER
PROTECTOR
The cable type must be
installed vertically.
Install a sun cover to prevent
direct exposure to sunlight.
To prevent buildup, the inclination should
be 15° or more. It also must be installed to
keep the wide part of the wing vertical.
The screw-type socket must under
24 mm. Otherwise, dust may enter,
resulting in malfunction.
< FIG. 1 >
Ⅹ
Ⅹ

HTM(HPV)-20N Series
HITROL CO., LTD. 9
Technical Data
Ambient Temperature (Housing)
-20°C –+ 60°C
HTM (HPV)-20N_Series
Process Temperature
MAX. 80°C
MAX. 120°C
MAX. 60°C
HTM (HPV)-20N-A / HTM (HPV)-20N-B
HTM (HPV)-20NH-A / HTM (HPV)-20
HTM-20N-C
Bulk density
Particle density 0.2g/cm3
HTM/HPV-20N Series
Max. Mechanical Load
400 N lateral (1 kgf = 9.8 N)
(For stacking heavy subjects, use a
protection cover.)
HTM (HPV)-20N-A / HTM (HPV)-20N-B
Max. Tractive Force
500 N
HTM-20N-C
Max. Process Pressure
Up to 10 kg/cm2 (150#)
HTM (HPV)-20N-A / HTM(HPV)-20N-B
Up to 2 kg/cm2
HTM-20N-C
Relative Humidity
Good for 0–100%
(Ratio between the vapor in the air and that
required for saturation at the same
temperature)

HTM(HPV)-20N Series
HITROL CO., LTD. 10
AMP and Wiring
The power specifications of HTM (HPV)-20N Series is AC 90–240 V and DC + 24 V,
Check and supply the power voltage before wiring, and then connect it to the output
according to use.
LED
- MAIN: Power on/off and operation
state
- SENSOR: Detection of medium
- RELAY: Relay operation
Tact Switch
- Setting button
Terminal Block
- AC: AC Input power
- F.G: Field ground
- DC: DC input power
- CONTACT 1 and 2: Output (DPDT)
Settings
Auto Setting
Initializes the operation of product or sets it to auto.
- Relay response time: 1 sec.
- Relay return time: 1 sec.
- Relay out: normal closed
Buildup Point Setting
If there is foreign substance on the measuring part of a product, set for detection
above the point.
(※However, the built-up medium must come in contact the sensor.)
Press and hold the button for 1 second to turn on and off the green
LED and thus finish the setting.
Press the buttons for 1 second to turn on and off the green LED
and thus finish the setting.

HTM(HPV)-20N Series
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Activation Point Setting
Set the current state as the detection point. (※However, the medium must come in
contact with the sensor.)
Activation Point Adjustment
Detectionpointis customizableaccording to thespecific gravityof the medium and the area
thatcomes incontactwiththe sensor. ( -Adjustinsensitively, -Adjustsensitively)
Relay Delay Time Adjustment
Delay time can be set for the relay operation after the sensor detects the medium.
Relay Out Control
You can change the state of the output contact. (N.C. N.O. … N.C.)
Press and hold the + buttons for 1 second to turn on and off the green
LED and thus finish the setting.
Press and hold the + buttons to turn on the red LED.
Use or to set the Delay Time with the buton. Then, press and hold the
+ buttons for 1 second to turn on and off the green LED and thus finish
the setting (max. of 60 sec. / min. of 1 sec. @ 1 sec. step).
Press and hold the button to turn on the red LED.
Use or to set the detection point with the button. Then, press and
hold the button for 1 second.
Press and then press and hold the button for 1 second to turn on and off
the green LED and thus finish the setting.

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LED Color
and States
Control and operation state can be checked with the main LED.
LED Color and
State
According to
Operation
Operation
GREEN
On
Normal operation
Turned on and off
Auto setting
Changes and saves the detection point
Changes and saves the relay contact time
Changes the relay contact time
Sets the buildup point
RED
On
Enters the relay delay and return setting mode
Enters the detection point fine control mode
Enters the detection point setting mode
Blinking
Detection point setting error
YELLOW
Turned on and off
Threshold is reached with the detection point fine control.
Threshold is reached with the relay delay time setting.
Blinking
No factory max. and min. value settings
Use
The level switch that prevents the vibration of the tuning fork is good for most of the
bulk materials, but the following need to be taken in consideration. (Refer to page 10.)
■Max. ambient temperature
■Max. pressure
■Max. particle size
■Vibration
Maintenance
■Maintenance
- Remove any sticky object from the device when cleaning the tank or silo.
- If the medium moves fast or the agitator works in the tank, perform regular
inspection to prevent mechanical damage to the sensor.
- It may cause sensor error and malfunction, so conduct a regular waterproofness
check.
- When measuring sticky material, check if such material grows. Remove them
regularly if any should appear.
The sticky material may cause malfunction and damage to the device.
Turn off the power of the product for maintenance.

HTM(HPV)-20N Series
HITROL CO., LTD. 13
Failure Check
If there is a problem with operation, check the following first.
■Power voltage is correctly connected.
■Power voltage is correctly supplied according to specifications.
■Output contact wiring is correct.
Cautions
for Removal
■Check the level and presence of liquid in the tank before removing it.
■Overheated product may cause burn, so wear gloves to remove it.
■If there is explosive gas in the atmosphere, do not open the cover.
■Remove it with the power disconnected.
■Make sure that any O-ring or gasket is not damaged while opening or closing the
cover.
Cautions for
Transportation
and Assembly
■Pay special attention to prevent any impact on the device during transportation or
assembly. The impact may directly lead to a failure.
■While transporting or assembling the device on a tank or silo, prevent any damage
to the assembly packing.
Make sure that it is not subject to any high impact when moving.
Cautions
for Installation
■Connect the flanges or bolts with the same specifications.
■Make sure to insert washers between bolts and nuts to prevent loosening.
■Make sure to insert gaskets between flanges.
(Select the gaskets in consideration of the temperature of the content and the
pressure inside the container.)
■Install an ex-proof product in an ex-proof zone.
■Do not bend or extend the sensor that vibrates.
■Make sure to install the product and the cover before supplying the power.

HTM(HPV)-20N Series
HITROL CO., LTD. 14
Cautions
for Grounding
■As shown below, connect the external grounding with the wire at 4 mm (4 mm SQ).
(The internal ground is connected before shipment.)
Make sure to insert a washer if the terminal lug is removed from the ground
terminal and subsequently reconnected (loosening prevention).
Cautions for
Lead-In Method
of External Wire
(Ex-Proof
Product)
■Use the cable gland connection or metal pipeline lead-in on the wire inlet. Also, use
a product with an equivalent ex-proof certificate to connect it using the external line
lead-in method.
■For an unused external line inlet, use a closing plug with an equivalent safety
certification for the ex-proof device.
Safety and
Environment
Details
■Cautions for Use
- Make sure to connect the product and the container using the required tools.
- Keep the lock key safe and make sure that it is locked.
- Do not cause high impact to the product.
■Cautions for Wiring
- Make sure to connect contacts with the correct terminals. (Refer to Wiring.)
- Wire and supply the power to the device after checking the specifications.
- Incorrect power voltage may cause damage to the device.
- Pay attention to prevent electric shock.
■Disposal
- Make sure to separate the AMP and main unit from the housing before disposing
the product. No part has an influence on the environment, so special attention is
not required (e.g., mercury switch).
Internal grounding
(Connected before
shipment)
External
grounding 4
mm2(4 mm SQ)
Inside of HEAD
Outside of HEAD

HTM(HPV)-20N Series
HITROL CO., LTD. 15
Label
■Label
The label stating the model, serial number, working temperature, working pressure,
and output is attached on the housing. The serial number is a unique
manufacturing number.
User Training
Under the aforementioned, do not exceed 80°C and 120°C, respectively, for the liquid
in the general and high-temperature containers when using the product. In addition,
make sure that the ambient temperature of housing is kept at -20 to +60°C.
(However, the C-Type is limited to a maximum temperature of 60°C for the liquid in
the container.)
Never open the cover of an ex-proof product while using it.
Ex-proof products are designed according to Article 34, Occupation Safety and Health
Acts and Clause 4, Article 58, Enforcement Regulation of the same.
Do not apply a non-ex-proof product in an ex-proof zone.
An ex-proof product can be used where the environment and the liquid inside
the container are of types 1 and 2.
Warranty
and Contact
Warranty and Service
This product is subject to a two-year shipment warranty. Unpaid service will be
provided for any damage found under normal operating conditions. If it does not refer
to product failure, payment will be required for the service charge.
You can request for A/S through our website or by contacting our headquarters.
Headquarters Factory Research Center
Address: Hitrol, 141, Palhakgol-gil, Jori-eup, Paju-si, Gyeonggi-do, Republic of
Korea (Palhakgol-gil 98)
HITROL CO., LTD. 141, Palhakgol-gil, Jori-eup, Paju-si, Gyeonggi-do,
Korea
TEL.: [phone] (Headquarters and A/S)
FAX : [phone] (Headquarters and A/S)