HB Products HBX Operator's manual

HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Installation and conguration guide
HBX Vapor Quality sensor
Sensors for optimizing Evaporator Control, both for DX (direct expansion) and
overfeed - systems
For compressor protection and leakage detection (ammonia carbamate)
Introduction:
The three dierent versions are available, with the same function. Pipe size and piping layout, bend or
straight, is dierent and suited for dierent applications. The strainer house version has one xed ow di-
rection, whereas the two stainless versions accept ow in both directions.
HBX Vapor Quality Sensors measures the Vapor Quality of the refrigerant vapor leaving an evaporator and
use this signal for controlling the expansion valve. Thanks to the capacitive measurement principle it is able
to measure the liquid content of the uid leaving the evaporator without pressure drop.
For “DX” systems the vapor quality sensor can replace the conventional superheat control and is able to re-
duce the superheat to zero. The sensor can control the valve directly or it can provide the high vapor quality
measurement for an external control system. The vapor quality sensor reacts instantaneously if the dryness
of the gas is changed in the evaporator outlet. Experience has shown that the entire system is in better bal-
ance with minimum variation in pressure.
In overfeed and ooded systems the sensor is able to measure the low vapor quality in the evaporator outlet
and control the circulation ratio (CR) by controlling the liquid valve or the pump capacity, either directly or
as an input for a PLC.
The sensor is manufactured in stainless steel or carbon steel and can be used for all commonly used refrig-
erants CO2, Hydrocarbons, ammonia, HFO’s and HFC’s with dierent settings. The HBX sensor is available in
several versions, with and without temperature sensor and cable for direct connection to an expansion valve.
Three types of expansion valves are supported: stepper motor, PWM pulse modulating ex. AKV valves and
modulating 4-20mA controlled expansion valve.
A special ATEX/IECEx (EEx ib IIC) version is available for use in special hazardous areas and with ammable
refrigerants. This product is only suited for external control and is not able to control an expansion valve di-
rectly.
Angle rod version
In-line version
Angle strainer versions

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Table of Contents
Introducon............................................................................................... 1
Safety Instrucon ...................................................................................... 2
Applicaon and mounng strainer house version .................................... 3
Applicaon and mounng straight pipe version ....................................... 4
Applicaon and mounng angle rod version ............................................ 5
Installaon of temperature sensor............................................................ 6
Removal of electrical unit.......................................................................... 7
Sensor conguraon ................................................................................. 7
How to use the sensor............................................................................... 8
How to setup the sensor as input for a PLC .............................................. 9
Advanced sengs for sensor as input for PLC input............................... 10
Using the sensor for ooded operaon together with a PLC ................. 11
Operang a batch freezing process......................................................... 11
Using the alarm funcon for leakage control and comp. protecon ...... 11
Calibraon of sensor ............................................................................... 12
How does the expansion valve control loop work for DX operaon…..…14
How to setup the sensor as direct controller—basic sengs................. 16
How to setup the sensor as direct controller—Advanced sengs ......... 17
Controlling a ooded or semi ooded evaporator ................................. 18
Connecng diagram stepper motor ........................................................ 19
Connecng diagram motor valve ............................................................ 20
Connecng diagram pulse modulang.................................................... 21
Connecng diagram PLC and ATEX/Ex/IECEx ......................................... 22
Remote seng ........................................................................................ 23
LED indicaons on sensor head............................................................... 24
Use of the sensor with other refrigerants ............................................... 24
Safety Instructions
CAUTION! Read this setup guide before installing and using the HBX Sensor.
Installation of HBX sensor must be carried out by a trained professional with in-depth knowledge of both refrigera-
tion and electronics. Improper installation and use of the HBX Sensor may result in damage to material and/or peo-
ple. The installation and use of the HBX Sensor must be done according to local regulation.
Altering type-approved equipment voids the type approval. The product's input and output, as well as its accesso-
ries, may only be connected as described in this guide. HB Products assumes no liability for damages resulting from
failing to follow the instructions in this setup guide.
Intended use. The purpose of the HBX sensor is refrigerant measurement and control.
If the HBX is to be used in a different way, prior, written consent must be obtained from HB Products.
Repair: Any repair must be carried out by a trained professional.
Disposal instructions: The HBX is designed for long life operation. If or when it becomes necessary to dispose of
the sensor it must be done according to local regulation.
CAUTION! This symbol refers to a possible limitation of functionality or risk in usage.
NOTE! Contains important additional information about the product and provides further advice.
CAUTION! Factory sengs do not guarantee safe operaon since the conguraon
parameters depend on the system design

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Up
Flow direcon
Flow direcon
H
H
H
Risk of trapped refrigerant
around the sensor disturbs the
measurement when lid points
downwards
Application and mounting instruction
Sensor mounted in a strainer house (HBX-xxx-ST)
The HBX-sensor is mounted after the evaporator and is able to measure the Vapor Quality (dryness) from 0.2 to 1. The
output can be used as input to a PLC or it can control the expansion valve directly or both. The sensor is mounted in a
strainer house where the strainer is replaced by the sensor. Compared to the original strainer the ow direction is
opposite and the mounting is upside down.
The sensor have to be mounted in downward sloping pipes to ensure drainage of refrigerant, and oil. The lid needs to
be upwards as other mountings will be sensitive to oil contamination and trapped refrigerant during startup.
When the sensor is welded into the plant the lid and sensor have to be removed. After the welding the piping have
to be checked for welding debris and deformations which might disturb the measurement. The distance between
the sensor element and the wall has to be uniform.
The lid with sensor is reassembled and the bolts are tightened according to the table.
HRemove lid with sensor
before welding
Max torque for bolts
H
Flow direcon

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Application and mounting instruction
Sensor mounted in a straight pipe HBX in-line
The HBX-sensor is mounted after the evaporator and is able to measure the Vapor Quality (dryness) from 0.2 to 1. The
output can be used as input to a PLC or it can control the expansion valve directly or both. This sensor version is
mounted in a straight pipe and it accepts ow in both directions.
The sensor can be mounted in dierent positions as long as you make sure there is no trapped refrigerant inside the
sensor during startup. Mounting the sensor with the electronic unit pointing downwards is not ideal as the connectors
might disturb the liquid ow in the bottom of the pipe and make the measurement unprecise.
The electrical unit can be mounted on either of the two connecting points
When the sensor is welded into the plant the electronic unit
has to be removed in order to protect it from the heat. The
studs have to be cooled during welding as they include O-rings
which does not tolerate temperature beyond 100°C (212°F). A
wet cloth is normally sucient to cool the studs.
Remove electronic unit be-
fore welding or soldering and
cool the studs ex. with a wet
cloth.
With the sensor downwards the
internal connections will disturb
the liquid ow in the bottom of
the pipe. The measurements
might be unprecise
Apply
cooling
When mounted horizontally
make sure refrigerant and
oil is drained for instance by
inclining the sensor 1
This mounting
will suer from
trapped refrig-
erant in the
sensor tube

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
HBX
Flow direcon
Angle minimum 30 downwards
Evaporator
Application and mounting instruction
Angle rod version
The sensor accepts ow in both directions, but has to be mounted in downward sloping pipes to ensure drainage of
refrigerant, and oil. The sensor can be mounted in dierent positions. But some will be sensitive to oil contamination
and trapped refrigerant during startup. Make sure that the sensor rod inside the long pipe is free from trapped refrig-
erant and oil at any time. The sensor pipes have a larger dimension than stated in the specication, but is delivered
with reductions to t the specied pipe diameter. This is done to avoid pressure loss coming from a massive inner rod
lling some of the pipe and reducing the cross section
Workarounds for low mounted evaporator outlets
It is important to secure drainage of liquid refrigerant and oil as this could
aect the sensor and especially oil is dicult to remove with a low velocity
gas. Especially in small systems without oil separator, it is important to keep
the sensor free from oil to avoid it disturbing the measurement.
Both pipes should be angled minimum downwards 1 degree or designed with a
P-trap/drop-leg to secure drainage.
This mounting will suer
from trapped refrigerant in
the metal block, where the
sensor is mounted
This mounting will suer from
trapped refrigerant in the
sensor tube
This mounting will suer from
trapped refrigerant in the sensor
tube
H
Flow direcon
Flow direcon
Slope downwards

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Installing the Sensor
The sensor is installed in the outlet of the evaporator, as part of the sucon line. Soldering connecon, ngs and pipes are
made of stainless steel. The sensor part itself must be removed by unscrewing it from the steel block/base part before sol-
dering.
Unscrew the complete sensor part before solder-
ing.
Use two wrenches when dismantling and installing
the HBX-Sensor. One to turn the sensor and one on
to stabilize the steel block to avoid stress to the
soldering's.
Use thread sealant.
We recommend using liquid thread sealant when
installing the sensor
Insulate the entire
mechanical sensor
part with insulation
foam.
Temperature sensor installaon
Refrigeraon systems working with NH3 can operate well without a temperature sensor, but most other refrigerant benet
from temperature measurement. The temperature measurement is used for oseng the Zero point and makes the meas-
urement more accurate.
The sensor normally has a cable with a temperature sensor which has to be mounted to the pipework using cable es or to
the lid of the larger strainer models. The mounng on the outside of the pipe provides sucient accuracy. The temperature
sensor compensates for the change in the dielectrical constant with the temperature and make the measurement more ac-
curate when starng the system.
The temperature sensor should
be mounted to a pipe in posi-
tion 3 or 9 o’clock with cable
ties as shown.
For strainer houses the clip can
be used for attaching it to the
lid

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Sensor conguraon
All HBX sensors can be calibrated using a PC and a, M12 -USB cable. The soware can be downloaded freely on the HB
Products web page. The conguraon data can be stored in the sensor and will be there unl erased without power con-
necon—just like you store data on a memory sck. When you change a value /seng there will be put a check mark next
to it and that indicates you have changed something and need to store the data in the sensor.
When the sensor is mounted in a refrigeraon plant where it is dicult to reach or it is very cold you should consider us-
ing an M12 extension cable in your installaon. This allows for conguraon of your sensor where you have your M12/
M12 connecon.
PLC
Cable from HB sensor
USB
M12 female
M12 male
USB conguraon cable used for con-
necng all sensors with M12 con-
nector to a PC with the HB tool
order code HBxC-USB
Removal of the electrical unit
End view without electronic unit
The threaded union between the electronic and
mechanical part allows for fast removal and
remounng of the electronic element without
interfering with the pressurised system. No
tools are needed for the operaon.

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Setup — sensor or control
The sensor can operate in two very dierent modes
• As sensor input to a PLC, computer or other device that
uses the sensor signal
• A direct controller of an electrically controlled expansion
or liquid valve version with a cable output that can be set
up as a controller
Select Control/Sensor to select the mode
How to use the sensor
Two dierent versions
Two dierent versions exist
• A pure sensor version—without the controller capability
• A version which can both control an expansion valve with a simple input and act as a sensor together
with a PLC
The sensors that are able to control an expansion valve have a cable beside the temperature sensor cable,
which can be connected directly to the valve. The sensors which are specied only to provide a signal for a PLC
will only have the M12 connection. All sensors, except those for NH3 refrigeration, has a cable with a PT1000
temperature sensor, which measures the operating temperature and makes the needed compensations.
Alarm application
Some of the sensors can be used for providing an alarm when the liquid level is high or if ammonia carbamate
is detected. The sensor can still be used for measuring vapor quality and control a liquid valve either directly or
via a PLC
Stop-
start
Power
24VDC
PLC
Sensor only version
Controller and sensor
version
PLC
See page 9 and
forward
See page 14 and
forward

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Typical values for DX operation
When the sensor is not operating as a controller some of the parameters are irrelevant and the boxes are inactive
and shown in grey.
1. Set lter time to 2 seconds. The lter time is the period of time over which the X measurement is averaged.
The longer the range the smoother the measurement becomes, but the risk is that the system becomes too
slow.
2. Run in signal (digital input pin 5) is used as external start and stop when operating as a controller and
should be set to OFF
3. Zero cal. function: Choose ”ON” if you want to use the push bottom ”R” for zero calibration
4. The “Alarm setting in “X” “ and “Alarm delay in seconds” can be used, but normally the alarm is pro-
grammed in the PLC directly based on the mA signal.
5. The temperature compensation function is set to “Temp oset” unless you don’t want this functionality. This
only applies if the sensor has
a temperature sensor
6. “Select refrigerant type” is
for information only and
should not be used for chang-
ing refrigerant as it does not
change the important set-
tings, and the sensor will not
provide the correct measure-
ments. If your refrigerant is
not correct you need a com-
plete settings le - please con-
tact HB-products for this.
7. After changing settings push
the button ”Save to sen-
sor” (the message ”OK” on the
screen indicates that the set-
tings are saved)
8. Go to next page: Advanced
settings
How to setup the sensor as input for PLC
When using the sensor as input to a PLC the analog output
is used. The output can be scaled by adjusting a parame-
ter. Dry gas will always be 4 mA but the “X measuring
scale” found in the Calibration tab denes the 20 mA point
The ”X measuring scale” can be changed in the calibraon tab

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
When the sensor is used as input for a PLC only the
relay function can be modien in the advance set-
tings' tab
1. Alarm output, NO (normally open) or NC
(normally closed) , default is ”NC” (Fail safe
function)
2. After Changing settings push the button ”Save
to sensor” (a message ”OK” on the screen
indicates that the settings are saved)
3. Save settings le is used to save all the set-
tings as a txt le
4. Load settings le is used to set up all parame-
ters from an existing txt le (copy data to a
new sensor)
Advanced settings for sensor as input for PLC
Tick o here for geng
access to selecon of
applicaon
Tick o
Set minimum
value here
Tick o here
and select
sensor type
Click here to
store the data
in the sensor
Under the calibration tab, the sensor can to be set to ooded operation called “HBX-CR” or DX but it does not really
matter when used for PLC input only.
How to change the “X measuring scale”
You start by ticking o the three small boxes to the right. At the same time you can change the operation range
from minimum in the box called “X measuring scale” to maximum called “Dry sensor” When you are done changing
the parameters, you store them in the sensor by clicking on “X scale calculation”

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Using the sensor for ooded operaon together with a PLC
The output of the sensor can be used for controlling a liquid valve directly or the analog output in pin 4 can be used as
input to the PLC. The signal is scaled linearly from 4 to 20 mA where 4 mA is sent for the “dry sensor” and the 20 mA
for the minimum “X measuring scale”.
An Example:
If you set the minimum to 0.50 and maximum to 1.00 you will get 16 mA for “degree of dryness “X” of 0.625
AO signal: 20— 16* ( 0.625-0,5) / (1,0-0,5) =16 mA on pin 4
Operang a batch freezing process
Batch freezing is dicult to control due to a large capacity variaon throughout the cycle. A way to control the process
it to start the freezing cycle as ooded and end it as DX. It
requires a PLC to control the expansion/liquid valve and make
a graduate change of the circulaon rao from 3 to 1, which
is equal to changing the X value from 0,3 to 1 as this formula
can be used: X=1/CR
The advantage of this way of controlling is increase the cool-
ing capacity in the last part of the cycle and avoid slug ow in
risers due to overfeeding. The DX operaon at the end re-
duce the pressure drop and lowers the energy consumpon.
The graph show how the X and CR value can be adjusted
during the cycle.
Using the alarm funcon for leakage control and compressor protecon
Some sensors can provide a digital output signal on pin 3 when the alarm level is reached.
This can be used for leakage control in a CO2/NH3 system where ammonia carbamate
will be created or for compressor protecon.
For leakage control the “Alarm seng in X” have to be set 20% below the normal oper-
ang point so for DX operaon it could be 0.8.
For compressor protecon the “Alarm seng in X” have to be set at around 0.97 to 0.98
depending on the system.
The “alarm delay in sec.” have to reect the system and have to be as low as possible.
The “alarm relay funcon” can be adjusted to either deliver a digital output or remove
the signal when the limit is passed
Current for
minimum “X”
Range
(20-4 )mA
minimum
maximum
X
minimum
Basic sengs
Advanced sengs
Cycle me in %

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Calibraon of sensor for DX operaon
The sensor is delivered with a basic calibraon for the refrigerant you specied when ordering. The sensor can be used
directly without further calibraon. You can check the calibraon as described below. If the calibraon is not opmal the
accuracy can be improved by making a simple dry calibraon at normal operang temperature, when the system has
been operang for some hours. The calibraon procedure is described in the secon below. The calibraon will depend
on
• Refrigerant
• Sensor and pipe dimensions
• Operang temperature (the temperature sensor will eliminate the inuence of the temperature)
How to check your calibraon and make a new calibraon of sensor controlling an expansion valve
 Start your refrigeraon system and let it reach normal operang temperature.
 Make sure the sensor is completely dry which can be done in dierent ways depending on your system
• If possible close the expansion valve manually and wait 1 minute for the system to evaporate all the
refrigerant
• Set the “degree of dryness “X” to 1.00 and the “Minimum valve opening in %“ to 0 this is done with the HB
tool as described before. Wait for 2 minutes
a. Disconnect the M12 plug and connect a PC with the HB tool with an USB/M12 cable.
b. Check that the control bar at the boom of the page indicates 0%
c. Select the “calibraon” tab and you get the picture shown.
d. Your calibraon is perfect if you don’t get a lower “Actual measurement in pF” than the value stated in the eld
“Dry calibraon in pF”. If the “Actual measurement in pF” is lower you need to make a new calibraon. This is done
by clicking on the “Dry sensor calibraon” boom. If the “Dry calibraon in pF” sll is higher than the “Actual
measurement in pF” click the buon once again.
e. When the calibraon is perfect, set the
“degree of dryness “X” back to normal, and
the “Minimum valve opening in %“ to normal
and then unplug the PC, reconnect the nor
mal M12 plug .

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
How to check your calibraon and make a new calibraon while sensor is connected
to PLC
 Start your refrigeraon system and let it reach normal operang temperature.
 Make sure the sensor is completely dry by closing the expansion valve manually and wait for the system to evapo-
rate all the refrigerant
3. Read the minimum “Actual measurement in pF” either from the PLC or by connecng a PC directly to the sensor
4. Your calibraon is perfect if you don’t get a lower “Actual measurement in pF” than the value stated in the eld
“Dry calibraon in pF” if the “Actual measurement in pF” is lower you need to make a calibraon. This is done by
clicking on the “Dry sensor calibraon” buon. If the “Dry calibraon in pF” sll is not lower than the “Actual
measurement in pF” click the buon once again.
Calibraon using a splier box
When using a splier box it is possible to run the refrigeraon system and connect a PC to the sensor at the same me.
The splier box is not suited for normal operaon, but only for installaon and modicaon. The splier box is connect-
ed to the M12 plug on the HBX sensor and then both the pc and the normal M12 plug can be connected.
Calibraon of sensor operang in ooded systems
Dry calibraon of the sensor is not crical when used in a ooded system and it is not needed to calibrate the sensor. If
you like to do a calibraon is similar to DX operaon. Note before making a dry calibraon the maximum “Dry sensor” X
value have to be set to 1.00. If the maximum is set to a value lower than that please contact HB product support depart-
ment as calibraon is not straight forward and requires a special uid or the correct gas/liquid mixture.

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
How does the expansion valve control loop work for DX operation
From stop to start
To start the process you need to activate the run in signal by applying 5-24 V on pin 5 when you remove the voltage
the system will stop. If this signal is not set the automatic dry-out is not enabled. The run in signal should be applied
when the compressor starts to benet from the start up process with a dry out period.
Dry out period and kickstart period
The controller will open the expansion valve to dry out the sensor and start the process. This function is only active if
the sensor basic setting “run in signal” is set to “ON” The idea behind the dry out and kickstart function is to ensure a
rapid start up to avoid compressor cut out due to low pressure and avoid very low evaporator temperatures. The pro-
cess can be started by a fast opening of the expansion valve to generate a high gas ow from the evaporator through
the sensor and removing potential liquid refrigerant and oil. The opening of the expansion valve also prevents the sys-
tem from shutting down due to low suction pressure.
When a plate heat exchanger is used we recommend to kick-
start process to avoid freezing. Without kickstarting the very
low suction pressure might result in local freezing on the
secondary side and damage the heat exchanger.
The dry out run for a period specied in the parameter:
“Dry out function in sec” and is ramped up with the speed
set in the parameter: “Ramp dry out % in sec”. When the
dry out is done, ramp up to normal operation will begin.
If the system usually is dry after a stop or defrost, the peri-
od can also be used as a kickstart period. This is typically
needed in small system and especially in heat pumps where
the compressor has a tendency to drop out due to low suc-
tion pressure. Here you can try to increase the opening until
it works. Note you might hit the low level alarm limit.
Ramping up capacity
The system will start slowly due to a PI controller which will ramp up the capacity depending on the settings. The “P-
band in %” specify the target for the expansion valve opening and the “I-factor in sec” specify how long time it takes
to reach the target.
80%
Valve Opening
100%
60%
40%
20%
+5°K
LL Alarm...0.900
Set.point.0.980
Start with
Wet sensor
Dry sensor
Wet sensor
Vapor Quality
”X”
Voltage/signal on pin 5, Start/Stop Signal
applied when the compressor starts/stops
0%
Time
24V
0
Ramping up capacityDry out
and
kick-
start
period
stop Normal operaon stop
Valve opening
Sucon temperature
with kick start
Sucon temperature
with slow start up
Time
Temperature

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
What then happens is that the controller starts opening the expansion valve at “valve speed 2 open % in sec”
which means more and more liquid is sent to the evaporator. After a period the maximum capacity is reached and
the HBX sensor begins to detect liquid and the opening of the expansion valve is reduced to “valve speed 1 open %
in sec”. At this point the X value passes 1, where X value is a measure for the vapor quality where X=0 is all liquid
and X=1 is dry gas.
With the reduced valve opening speed the capacity will still increase until the setpoint “Degree of dryness “X” ” is
reached. After this point the controller will open and close the valve to maintain a stable “X “value.
Normal operation and stopping
The normal operation will continue until the system is stopped by removing the voltage on pin 5 for defrost or a
regular stop. After stop, the process will restart with a new dry out period, which is important for a smooth opera-
tion.
What happens when the process is disturbed
If something happens with the complete system which results in liquid in the evaporator outlet there is a build in
safety system that protects the compressor. If the sensor measures a “X” value lower than the “low limit safety
alarm in “X”” the valve will be closed rapidly until setpoint “Degree of dryness “X” ” is reached again. The speed
can be adjusted in the parameter: “Low Limit Valve close %/sec” and is as default set very high for safety rea-
sons—it might lead to unstable operation. If the system has an accumulator before the compressor the “Low Limit
Valve close%/sec” can be set to a lower value e.g. 0.8 instead of the default 0.9 to avoid instability. The gure be-
low shows what happens when the low limit safety alarm is hit.
To make sure the compressor is not shut down due to too low suction pressure there is a parameter: “Minimum
valve opening in %” in the system. There is also a parameter: “Maximum valve opening in %” which is there to
limit the liquid injection if the valve is too large.
How does the control loop work for ooded operation
The sensor can control a liquid valve or a circulation pump directly in a similar matter as for an expansion valve in
DX operation. The control loop can work with any vapor quality all the way to X=0 (all liquids) if needed.
HB-products support can help you with setting up the system.
Min. Valve opening
80%
Valve Opening
100%
60%
40%
20%
Valve opening/closing me
”X”
+5°K
LL Alarm...0.900
Set.point.0.980
Start with
Wet sensor
Dry sensor
Wet sensor
Vapor Quality
”X”
DI, Start/Stop Signal, Run-In…..pin 5
0%
Time
Valve Speed 2 Valve Speed 1
ON
OFF
Valve Close
Low Limit Safety Alarm at ”X” 0.9
Closing the liquid Valve to minimum Valve
opening (Ramp me controlled)
Valve Open
Speed 2
Valve Closing
Speed
Open
Speed 1
Dry out and kick-
start period

16
HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
1. Set the desired degree of dryness, ”X” value. For DX operation a good starting point would be 0.98 the clos-
er to 1 you go the dryer the gas will be. The X value is the Vol% of liquid
2. Set the P-band to 10% as a starting point. If the value is set higher the valve will react slower
3. Set the I-factor to 40 sec as a starting point. This means the system will ramp up over a period of 40 sec-
onds. If the I value is set higher the system will be very slow
4. Set lter time to 5 seconds. The lter time is the period of time over which the X measurement is averaged
over. Increased lter time smoothens the measurement, but the risk is that the system becomes too slow.
5. Run in signal (digital input pin 5) is used as external start and stop signal when set to ”ON”. This is im-
portant. If set to “OFF” the dry-out will not work and there is a risk that the control system will not really
start up because the sensor is wet to begin with.
6. Zero cal. function: Choose ”ON” if you want to use the push button ”R” for zero calibration. Default is “OFF”
7. The “Alarm setting in “X” “ is 0.8 as default, and the “Alarm delay in seconds” is as default 10 sec. The
alarm is normally only used when the sensor act as leakage control or as compressor protection—se special
section
8. If the sensor has a temperature sensor it has to be mounted according to the installation guide and the
“Temp. comp. function” should be set to “Temp. oset” This activates the temperature compensation and
gets a more accurate “X” measurement
9. “Select refrigerant type” is for information only and should not be used for changing refrigerant as it does
not change the important settings, and the sensor will not provide the correct measurements. If your refrig-
erant is not correct you need a complete settings le - please contact HB-products for this.
10. After changing settings push the button ”Save to sensor” (the message ”OK” on the screen indicates that the
settings are saved)
11. Go to next page: Advanced settings
How to setup the sensor as direct controller of an expansion valve.
Typical values for DX operation

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HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
1. Valve speed 1 opening time in sec., Default is 0.2 sec. and a good starting point
2. Valve speed 2 opening time in sec. Used for fast opening during start-up , Default is 0.5sec.
3. Valve speed closing time in sec., default is 0.3 sec. and a good starting point
4. Dry out time function in sec., This function opens the expansion valve to dry-out the sensor after a stop or de-
frost, and is essential for a good starting process. Default is 20 sec. and a good starting point
5. Ramp dry-out %, degree of valve opening in % per second (safe function to minimize hydraulic shock) 2 % is a
good starting point. The function can also be used a kickstart function if the compressor tends to stop due to low
pressure. This function is typically needed for smaller heat pumps.
6. Alarm output, NO (normally open) or NC (normally closed) , default is ”NC” (Fail safe function) This setting is
linked to the alarm on the previous page and is normally only used when the sensor act as leakage control or as
compressor protection—se special section
7. Minimum valve opening in % (ensures against stops due to low suction pressure) 10 % is a good starting point
8. Maximum valve opening in %, normally set to 100% but a lower number is used for oversized valves
9. Low limit safety alarm in ”X” value, default value is 0.9 This is a safety function which closes the expansion valve
rapidly to minimum opening in order to protect the compressor. 0.9 or 0.85 are a good starting points for DX.
Choose 0.85 if you have a system with large capacity variations. For ooded operation the setpoint have to be
10% lower than the “degree of dryness, ”X”
10. Low limit valve close time in sec., default value is 5% per second used for fast closing when the sensor getting
wet, 5% is a good starting point
11. After Changing settings push the button ”Save to sensor” (a message ”OK” on the screen indicates that the set-
tings are saved)
12. Check all settings by push the button ”Show sensor settings”
13. Save settings le is used to save all the settings as a txt le
14. Load settings le is used to set up all parameters from an existing .hbp le (copy data to a new sensor )The con-
tent can be read in a text program like MS word+
Advanced settings for sensor as direct controller of an expansion valve.
Stepper motor sengs only ap-
pear in sensors with built-in
stepper motor print.
Can be used for all valve types,
stepper motor sengs must
match manufacturer's instruc-
ons.
Displayed sengs are for a Carel
EV2 valve. There is an instruc-
on manual describing how to
setup and connect dierent
valves on hbproducts.dk
If you need further help, please
contact sup-
[e-mail]

18
HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
Controlling a ooded or semi ooded evaporator
The sensor can be used direct control of a liquid valve in an overfeed system.
The sengs are similar to the DX system but a few sengs have to be dier-
ent .
The degree of dryness “X” have to be lower and the rule of thumb is that the
CR (circulaon rao) is CR=1/”X” so if you aim for CR = 2 put in 1/2 = 0.5 as The
degree of dryness “X”
The remaining parameters in basic sengs can be the same as for DX
For the advanced sengs, the “Low limit safety alarm in “X” har to be set ap-
prox. 10 % lower than the “degree of dryness “X” . An example: for a value
“degree of dryness “X” = 0.6 you choose around 0.54. If you have a system
with large variaons in load you need a large gap between the two values than
if you have a very stabile system. If the “Low limit safety alarm in “X” is too
close to the “degree of dryness “X” there is a risk that the system becomes
unstable because you hit the limit and the liquid valve will close rapidly.
Under the calibraon tab, the sensor has to be set to ooded operaon called
“HBX-CR” which is normally done at delivery. If this is not done or the sensor
has to be used for another purpose it can be changed here. You start by cking
o the three small boxes to the right. Then the large input boxes come to live
and you can change the applicaon to “HBX-CR” for ooded operaons and set
the sensor type if wrong. At the same me you can change the operaon range
from minimum in the box called “X measuring scale” to maximum called “Dry
sensor”. When you are done changing the parameters, you store them in the
sensor by clicking on “X scale calculaon”.
Tick o here for geng
access to selecon of
applicaon
Tick o and
select applica-
on to HBX-CR
here
Set minimum
value here
Set maximum
x value here
Tick o here
and select
sensor type
Click here to
store the data
in the sensor

19
HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
+24V DC or AC
- Common
AI Remote sengs*/DO Alarm
AO,4-20 mA level **
DI start stop
4
1
5
3
2
R
1
5
4
3
2
ALARM
LIQUID
POWER
PLC
+
-
AO
AI
DO
Run IN signal 5 to 24 V
Temperature sensor PT1000
Should be mounted on the outside of
the tube in posion 3 or 9 o´clock with
cable es
Color coding
A+ = yellow(2)
A- = white (4)
B- = green (1)
B+= brown (3)
Connecon diagram for HBX/S (stepper motor) with tempera-
ture compensaon — here shown with Carel E2V
• Under ”advanced sengs” the stepper motor sengs
for the valve should be specied
• Analog output see page 19
*Please see appendix for descripon of remote sengs
** When the sensor is very wet it will deliver 22 mA

20
HBX-all types installaon and calibraon manual 03 date: 26-06-2020 WWW.HBPRODUCTS.DK
AO = Gray , 4-20 mA
- Common
AI Remote sengs*/DO Alarm
AO,4-20 mA level vapor quality**
DI start stop
4
1
5
3
2
R
1
5
4
3
2
ALARM
LIQUID
POWER
PLC
+
-
AO
AI
DO
Run IN signal 5 to 24 V
Motor valve: 4-20 mA 24 V DC, max 24 W
3 wire connecon
Connecon diagram for HBX/C motor valve— here shown with Siemens MVS661
-common
+ supply
mA input
mAoutput posion
Open/Close valve
G0
G
Y
M
U
ZC
+24V DC or AC
+ = Brown Supply
- = White common
Manual open/close
Close Open
MVS661 motor valve
Opportunies when used as controller:
• Addional analog output showing Vapor Quality, 4-20mA (sensor pin.
4).
• Change set-value by remote seng, 4-20mA (sensor pin. 3).
• Controller funcon may be monitored by data logging of the valve
posion, as shown by measuring the valve opening signal on MVS661
terminal U (4-20mA/0-10V)
• Analog output see page 19
*Please see appendix for descripon of remote sengs
** When the sensor is very wet it will deliver 22 mA
Important informaon on motor valves
Some motor valves does not work properly when mounted in a cold room.
Please check supplier specicaon.