HITROL HT-100F Series User manual

HITROL CO., LTD.
HEAD OFFICE. FACTORY.
R&D INSTITUTE
HITROL CO., LTD.,
141, Palhakgol
Paju-si, Gyeonggi-do, Korea
TEL.: [phone]
FAX: [phone]
www.hitrol.com
HITROL CO., LTD.
R&D INSTITUTE
141, Palhakgol
-gil, Jori-eup,
INSTRUCTION
FLOAT
TYPE LEVEL TRANSMITTER
HT
HT
Doc. N
o.: HT100F_
HT-100F Series
HITROL CO., LTD.
1
INSTRUCTION
MANUAL
TYPE LEVEL TRANSMITTER
HT
-100F Series
HT
-100FI Series
o.: HT100F_
IM_Eng_Rev.3.1
Date Issued: 2023.09

HT-100F Series
HITROL CO., LTD. 2
You should be careful where CAUTION is
marked to carry out the work.
You should be aware of where NOTICE is
marked to carry out the work.
You should be well-informed of the contents
where WARNING is marked before carrying
out the work.
Table of Contents
Overview and Features · · · · · · · · · · · · · · · · · · · 3
Mechanism and Components · · · · · · · · · · · · · · · 3
Specifications · · · · · · · · · · · · · · · · · · · · · · · · · · 4
Specifications of the M-100R · · · · · · · · · · · · · · · 4
Float Application Table· · · · · · · · · · · · · · · · · · · · · 5
Components · · · · · · · · · · · · · · · · · · · · · · · · · · · 5
Dimensions · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6
Wiring · · · · · · · · · · · · · · · · · · · · · · · · · 6
Zero/Span Adjustment · · · · · · · · · · · · · · · · · · · · · 7
Maintenance · · · · · · · · · · · · · · · · · · · · · · · · · · · 8
Attachment and Cautions· · · · · · · · · · · · · · · · · · · 9
Cautions for Removal · · · · · · · · · · · · · · · · · · · · 10
Cautions for Installation · · · · · · · · · · · · · · · · 10
Cautions for the Inserted External Wire · · · · · · 10
Safety and Environment · · · · · · · · · · · · · · · · 10
Marking · · · · · · · · · · · · · · · · · · · · · · · · · · 10
Failure Mode & Actions · · · · · · · · · · · · · · · · · 11
When the output current is below 4mA · · · · · · · · · 11
When the output current is above 20mA · · · · · · · · 11
Output Current Holding Phenomenon · · · · · · · · · · 11
Output Hunting Phenomenon · · · · · · · · · · · · · · · 11
Warranty and Contact · · · · · · · · · · · · · · · · · 11

HT-100F Series
HITROL CO., LTD. 3
Overview and
and Features
Mechanism and
Components
■ Wire type for easy installation
■ Local indication (indicator)
■ Easy maintenance
The HT-100F Series is a float-type level transmitter for continuously measuring
the liquid level in a container with buoyancy. It is mainly used to measure liquid for
purification, industrial water, sewage treatment plants, wastewater, and fuel tanks.
When the float, which is fabricated according to the specific gravity of the target to be
measured, moves up and down along the liquid surface with buoyancy, the wire
connected to the float is wound around the wire drum by the constant spring.
The rotation of the wire drum is transferred to the gear and, thus, triggers the indicator
pointer.
The magnet in the indicator pointer triggers the reed switch to change the resistance
value.
The changed resistance value is detected by the R/I converter(M-100R) in the housing
and corresponding current value (DC 4-20mA) is continuously output. The HT-100FI has
the local indicator pointer so that it can be checked on site.
<Front> <Rear>
(M-100R)

HT-100F Series
HITROL CO., LTD. 4
Specifications
Model HT-100F HT-100FI
Mounting Top, Flange
Indicator None 1-point dial
Ambient Temperature −20°C ~ +60°C
Process Temperature Max. 80°C
Process Pressure ATM
Range (m) Max. 7.5m
Power Source DC 24V None (Std.) / DC 24V (Opt.)
Output
DC 4~20mA (2-wire)
Display (Std.) /
DC 4~20mA (2-wire) (Opt.)
Enclosure Weather-proof (IP54)
Wetted Parts Material 316L SS
Process Connection 100A JIS 10K FF (Std.)
Cable Entry PF 1/2"(F)
Accuracy ±2% of F.S.
Specifications of the M-100R
Item Specification
Microprocessor 16Bit Microprocessor
Current Loop Interface 2-Wire Loop Current
Supply Voltage +17V ~ +40V @ Typ.+24V
Operating Voltage +3.3V
Output Current Accuracy 3.8mA ~ 20.5mA @ ±0.2% F.S
Output Current Range 3.8mA ~ 20.5mA @ Alarm 3.6mA, 21mA [NAMUR NE43]
Output Current Offset
■ Zero: 3.9 ~ 4.1mA
■ Span: 19.9 ~ 20.1mA ±0.1mA @ 0.01mA Step
Frame Ground FG
Damping Time 0.5 sec @ Fixed
Self-Diagnosis
■ Lower than Zero Level
■ Float deviation
■ Sensor Cable not wired
3.6mA Output
■ Higher than Span Level 21mA Output
Simulation Current Out
■ 4mA @ 5 sec.
■ 12mA @ 5 sec.
■ 20mA @ 5 sec.
Status Indicator Tri-Color LED (Green/Red/Orange)
Zero / Span Set Tact Switch
Wire Connection One-Touch Connector AWG 16 ~ 26
Ambient Temperature -40℃ ~ +85℃
Dimension 80mm x 65mm x 20mm
Weight 54g

HT-100F Series
HITROL CO., LTD. 5
Float Application Table
Float Size
Spring Length
MEAS. Range
S.G
Range
Outer
Diameter
Length Min
89.1 200
5 m / ~3.5 m 0.7
7.5 m / ~6 m 0.7
10 m / ~7.5 m 0.8
76.3 250
5 m / ~3.5 m 0.7
7.5 m / ~6 m 0.7
10 m / ~7.5 m 0.8
Components
Aluminum Housing Aluminum Housing
(Indicator Type)
Flange
CS, 304, 316L
Float
304, 316L
Protection Tube
304, 316L
Flange
CS, 304, 316L
Outside
Wetted Parts
Material
Float
304, 316L
<Wire Type> <Protection Tube Type>
Vent Hole

Dimensions
<HT-100F>
Wiring
HITROL CO., LTD.
<HT-100FI>
M-100R (R/I CONVERTER)
■ + -: DC 24V(DC 4~20mA Loop)
■ FG: Frame Ground
■ H, C, L: Terminals between Sensor and
* Cable Color: H – Red, C – White, L – Black
■
Make sure to connect the power with correct polarity (+,
■ The power supply must be between
DC
■
Do not connect the wire with the power connected.
HT-100F Series
HITROL CO., LTD.
6
<HT-100FI Guide Type>
M-100R
Make sure to connect the power with correct polarity (+,
−).
DC
+17 and +40V.
Do not connect the wire with the power connected.

Zero/Span
Adjustment
Green LED is turned on
when the power is connected
and wiring properly.
Step 1
▷ Steps
2 and 3 can be
▷ For the
zero
▷ For the
span
Caution: Incorrect
and then off.
■ Offset
Adjust the error of
Step 1
Press the +
buttons for
to turn on the red LED.
▷
Offset adjustment is available regardless of float position.
■
Simulation Current Out
When the check of correct output (4~20mA) between M
▷4mA◁
M
Press +
buttons at once for
about 1 sec. then 4mA will be out
for 5 sec.
▷
After 5 seconds, it will be returned to actual float sensing mode.
▷ It can be tested regardless of the wiring of the sensor.
S
M
HITROL CO., LTD.
Step 2 Step 3
2 and 3 can be
interchanged.
zero
(0%) setting, proceed with Step 1  Step 2 
span
(100%) setting, proceed with Step 1  Step
3
Caution: Incorrect
setting may lead to an incorrect
range setting with
Adjust the error of
measuring device or fine tuning of level.
S
M
Step 2
buttons for
1s
With the button pressed, press the
/ button for fine tuning.
or
or
▷Span◁
▷Zero◁
Offset adjustment is available regardless of float position.
Press the button
with the float at
0% position.
Press the button
with the float at
100% position.
With the button pressed, press the
/ button for fine tuning.
Simulation Current Out
When the check of correct output (4~20mA) between M
-
100R and PLC required, test it as
▷12mA◁
▷
buttons at once for
about 1 sec. then 4mA will be out
After 5 seconds, it will be returned to actual float sensing mode.
It can be tested regardless of the wiring of the sensor.
Press + buttons at once for
about 1 sec. then 4mA will be out
for 5 sec.
Press + buttons at once for
about 1 sec. then 4mA will be out
for 5 sec.
HT-100F Series
HITROL CO., LTD.
7
Step 4
Press and hold the button for 1s
to finish zero/span setting with
the green LED on and then off.
Step 4.
3
 Step 4.
range setting with
the orange LED on
Step 3
Press the + buttons for 1s
to finish the offset with
the green LED on and then off.
100R and PLC required, test it as
below.
▷
20mA◁
S
After 5 seconds, it will be returned to actual float sensing mode.
Press + buttons at once for
about 1 sec. then 4mA will be out
for 5 sec.
S
S
M

Maintenance
The HT-
100F Series level transmitter requires
sections.
The sensor section has REED S/W; the drive section has
and spur gear; and the transmission section has
The service life of parts depends on the operation
required to keep the optimum operation conditions.
inspection and maintenance at least every
M-100R
can be checked using a
<Checking of the Sensor>
Disconnect the sensor wire from the H, C, and
ure the resistance value of the sensor.
Low and Com
High and Com
High and Low
<Checking of the Drive>
1. Remove the front cover to see the gear operation.
2. Remove the rear cover to check the wire and measuring tape for any damage.
Indicator
Power Supply
HITROL CO., LTD.
100F Series level transmitter requires
inspection for the sensor, drive, and
The sensor section has REED S/W; the drive section has
and spur gear; and the transmission section has
the M-100R.
The service life of parts depends on the operation conditions, and regular inspection
required to keep the optimum operation conditions.
Thus, users are advised to
inspection and maintenance at least every
year.
Exterior damages will
can be checked using a
digital multimeter.
<Checking of the Sensor>
Disconnect the sensor wire from the H, C, and L terminals of the
ure the resistance value of the sensor.
Low and Com
Resistance value of the current level
High and Com
Resistance value of the full level –
Resistance value of the
High and Low
Resistance value of the full level
<Checking of the Drive>
1. Remove the front cover to see the gear operation.
2. Remove the rear cover to check the wire and measuring tape for any damage.
Indicator
M-100R
Power Supply
After checking the sensor parts, the wrong connection of H
the product failure.
Sensor
HT-100F Series
HITROL CO., LTD.
8
inspection for the sensor, drive, and
transmission
The sensor section has REED S/W; the drive section has
the wire drum, spring drum,
conditions, and regular inspection
is
Thus, users are advised to
conduct regular
Exterior damages will
be visually checked. The
L terminals of the
M-100R, and meas
Resistance value of the
current level
2. Remove the rear cover to check the wire and measuring tape for any damage.
Digital Multimeter
After checking the sensor parts, the wrong connection of H
, C, and L is the cause of

HT-100F Series
HITROL CO., LTD. 9
Attachment and
Cautions
If it is installed on the inlet, install a guide,
or make it distanced from the inlet to
prevent malfunction.
When there is flow or sloshing in the measured
object or there is agitator around the sensor, the
protective tube type must be used.
Install it on the concrete wall as shown above. “d” diameter requires a larger diameter than
float and straight piping.

HT-100F Series
HITROL CO., LTD. 10
Removal
Cautions
Cautions for
Installation
Cautions
for the Inserted
External Wire
Safety and
Environment
Marking
■ Check the level and presence of liquid in the tank before removing it.
■ Disconnect the power first.
■ Connect flanges with same dimensions.
■ Make sure to insert washers between bolts and nuts to prevent loosening.
■ Make sure to insert gaskets between flanges.
■ Make sure to install the product and to cover it before supplying power.
■ Do not use it for any corrosive gas.
■ Use the cable gland connection or metal pipe wiring for the inlet of wires.
Make sure it is not subject to any impact when moving it.
■ Cautions
- Make sure to connect the product and container using the required tools.
- Do not apply large impact to the product.
■ Disposal
- To dispose a waste product, separate the AMP and body first. It does not contain
any part that is harmful to the environment (e.g., mercury switch).
■ Product Identification
The product identification mark is attached onto the housing and shows the model name, serial
number, working temperature, working pressure, and matters regarding output. The serial
number is a unique manufacturing number for the identification of products.

HT-100F Series
HITROL CO., LTD. 11
Output Hunting Phenomenon
Output Current Holding Phenomenon
Failure Mode
& Actions
Cause Check Point
Incorrect zero measurement range setting Reset
Offset applied Offset default
Loss of buoyancy or damage to the float Replace the float
Damaged diode of the M-100R Replace the M-100R
Cause Check Point
Incorrect span measurement range setting Reset
Offset applied Offset default
Open low cable of sensor Reconnect the sensor
Damaged diode of the M-100R Replace the M-100R
Cause Check Point
When the resistor of the sensor is seriously damaged,
resulting in a short circuit with the pointer positioned on it
Replace the sensor PCB. (If the float is out
of the position, the output will sharply rise
or drop, leading to measurement error.)
When the resistor of the sensor is seriously damaged,
resulting in an open circuit with the pointer positioned on it
Replace the sensor PCB. (If the float is out
of the position, the output will sharply rise
or drop, leading to measurement error.)
When the wire is not wound
Check if any foreign subsidence is in the
wire drum or if the spring is damaged.
Cause Check Point
Temporary over-measurement (approximately 10%) and
noise output shape due to over-current caused when a
diode of the M-100R is damaged
Replace the M-100R
Warranty
and
Contact
■ Warranty and Service
This product is subject to the warranty for 2 years of shipment and unpaid service will
be provided for any damage found under normal operating conditions. If it is not
about the failure of product, the service charge will be payable.
You can request A/S at our website or by contacting our headquarters.
■ Headquarters ․ Factory ․ Laboratory Contact Number
ADRESS : HITROL CO., LTD 141, Palhakgol-gil, Jori-eup, Paju-si, Gyeonggi-do, Korea
T E L : 031-950-9700 (Headquarters & A/S)
F A X : 031-943-5600 (Headquarters & A/S)
When the output current is below 4mA,
When the output current is above 20mA,