horiba HP-200 User manual

ThecontentsofthisEｎｇｉｎｅｅｒｉｎｇSheetaresubject
tochangewithoutpriornotice,andwithoutany
subsequentliabilitytothiscompany.

Version1.0asofOctober,2011
*Note: If the distance to the converter is longer than the pH electrode cable length, use the relay bo
x
and the relay cable.
The cable length between the pH electrode and the converter is 50 m maximum (including the electrode cable).
HP-200 Overvie
w
Measurement target
●pH of a solution
Intended use
● ontrol and monitoring of drainage treatment
and production process
Measuring principle
●Glass electrode type
System configuration diagram
Standard specification
H-1 Series Industrial pH Mete
r
●The HP-200 allows you to make a pH measurement
when the pH electrode is connected
.
The measured value and various parameters are
displayed on the LCD part. When used with our
cleaner, the HP-200 allows you to control the cleaner.
A variety of self-diagnostic capabilities is provided to
allow you to detect a trouble with the pH electrode or
the HP-200.
pH electrode Electrode cable
<On site> <Measuring room>
Converter
Contact output
(3 points) Alarm, controller, etc.
External hold
(2-core cable) Recorder
RS-485 input/output RS-485
AC power source
(90 to 264 VAC) Power source
*Relay box
*Relay cable
(45 m max.)
Contact input
Transmission output (2 points): 4-20
1/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
HP-200 Readout Converte
r
External Dimensions
Converter/Sensor
Features
●Outdoor installation type (equivalent to IP65; splash-proof
construction)
●Selectable simultaneous display of temperature
All settings available with front keys
●Applicable for 5 kinds of standard solutions (pH 7 plus one to
three among pH 2, 4, 9, and 10)
●Improved maintenance feature (self-diagnostic capability)
Selectable transmission output range
●Backup of stored data
●Easy-to-read display (150% larger than former display)
●Improved operability of keys by using an emboss sheet
●Improved mode display by using icons
●4 kinds of temperature compensation electrodes (500, 6.8 k, 1
k, and 10 k) Self-detection capability provided
The glass electrode method uses two electrodes, i.e. the glass
electrode and the comparison electrode to measure the voltage
(electrical potential difference) generated between these two
electrodes, thereby measuring the pH of the solution.
When there are solutions with different pH inside and outside the
glass film, electromotive force is generated in proportion to the
difference in pH across the film.
When the difference in pH between two solutions at 30°C is 1,
electromotive force of about 60 mV is typically generated.
Since a solution of pH7 is typically used for the internal fluid in the
glass electrode, the pH value of a suspected fluid can be found
by measuring the electromotive force generated in the electrode
film.
To measure the electromotive force generated in the electrode
film of the glass electrode, another electrode is required. The
other electrode paired with this glass electrode is called a
comparison electrode. The comparison electrode must have very
stable electric potential. For this purpose, the liquid junction is
perforated or ceramic-coated.
In other words, the glass electrode is designed to accurately
generate electromotive force from the difference in pH. The
comparison electrode is designed to prevent electromotive force
from being generated from the difference in pH.
Internal fluid
Electrode 1
Electrode 2
Sample
Glass film
Principle diagram of glass
electrode method
Unit: mm
2/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
Configurations
●Front ●With the front cover opened
Cover
This cover is used for
outdoor installation.
Display part
The measured value
and other information
are displayed here.
Conduit
Up to 6 electric wires of
9 to 11.5 mm diameter
can be used.
Screw cap
When the two screw
caps are removed, the
front case screws
appear.
Front cover
When the cover is
opened, 6 operation
keys appear.
Purge air inlet
Purge air is sent through this inlet to
prevent internal corrosion. Normally
no connection is required.
Front case
Front case screw
When the four screws
are removed, the front
case can be opened.
Operation key section
●Display part
Status display
●Operation key section
●Terminal block
Indicator
Status display
Measured value display
Auxiliary display
Electrode connection
terminal
Contact output
terminal
RS-485 terminal
Transmission output terminal and
contact input terminal
Power connection terminal
Fuse box
Power switch
Grounding terminal
3/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
Power
supplied
Applicable
electric wire
0.75 to 5.5 mm2(AWG18 to 10).
Voltage: 100 to 240 VAC
Frequency: 50/60 Hz
Air purge
An inlet is provided for purge air which is used to
prevent internal corrosion. When the HP-200 is used in
an environment where corrosive gas is generated,
constantly send instrument air to prevent the corrosive
gas from entering the inside.
Power supply
The HP-200 has a power switch. For the HP-200, use a free
power source for rated voltage of 100 to 240 VAC.
Operation outside the rated range can cause a fault. Therefore,
check the power supply voltage.
Also check that fluctuations of the power supply voltage fall
within ±10%.
Major specifications
•The terminal screw for the contact output is ofM4.
•The applicable electric wire is of 0.75 to 5.5 mm2 (AWG18 to
10).
Provide the power switch in a place near the HP-200 so that the
power can be turned ON/OFF. If lightning might strike, install an
arrester on the output side of the HP-200 and on the side of
receiving instruments.
Be sure to ground the grounding terminal (class D grounding).
Separate this grounding from any other grounding for electric
equipment such as a motor.
Front view
Inlet for
purge air
Bottom
Power switch
Class D grounding
4/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
0.75 to 5.5 mm2 (AWG18 to 10)
250 VAC, 3 A maximum
or 30 VDC, 3 A maximum
Contact capacity
Applicable electric wire
CtrL control output, alarm output
Time-sharing proportional control (shift
function)
Time-sharing proportional control (F-
zone function)
Temperature alarm output, HOLD
output
FAIL output, Clu output
Kinds of alarms
Contact output
CtrL: Control output
When the measured value is larger than (control value plus
control width x 1/2), the control output is turned ON. When the
measured value is smaller than (control value minus control
width x 1/2), the control output is turned OF
F
.
(The above case is applicable for the upper-limit operation; the
reversed case is applicable for the lower-limit operation.)
"AL": Alarm output
When the measured value becomes larger than the setting, the
alarm output is turned ON to trigger the alarm after the delay
time. When the measured value becomes smaller than the
setting, the output is immediately turned OFF to cancel the
alarm.
The setting of output delay time (0 to 600 seconds) is also
possible.
(The above case is applicable for the upper-limit operation; the
reversed case is applicable for the lower-limit operation.)
The HP-200 is provided with five contact outputs as standard.
The HP-200 has contact outputs including upper/lower alarm
contact output, error alarm, transmission output hold, and
others.
Major specifications
•The contact capacity is 250 VAC, 3 A maximum or 30 VDC, 3
A maximum for resistance load.
•The terminal screw for the contact output is of M4.
•The applicable electric wire is of 0.75 to 5.5 mm2 (AWG18 to
10).
•If noise is detected from the load, use a varistor or a noise killer.
•Only the CLN output involves voltage from the connected power
source. Others are no-voltage contact output.
•For the FAIL output only, NO and NC are reversed. When the
HP-200 is normal (not in failure), the CF-NOF contact is open
and the CF-NCF contact is short-circuited. When the power is
OFF, the C-NOF contact is short-circuited.
•To connect any load exceeding the contact capacity or any
induction load (e.g., a motor or a pump), be sure to use a power
relay exceeding the load rating.
•When the HP-200 is OFF, the C-NC contact for R1 to R4 is
short-circuited. Therefore, be careful about the connection of
load.
R3 (control output) R4 (control output) CLN (cleaning output) *
output with voltage
R1 (control output) R2 (control output) FAIL (error warning output)
Control value
pH 14
Control width
1/2 diff
Control value
Contact output
(r1 to r4)
Measured value
pH 14
Measured
value
Contact output
(r1 to r4)
Delay time
5/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
"t": Temperature alarm output
When the temperature value is higher than the setting, this
output is turned ON to trigger the alarm after the delay time.
When the temperature value becomes lower than the setting,
the output is immediately turned OFF to cancel the alarm. The
setting of output delay time (0 to 600 seconds) is also possible.
The above case is applicable for the upper-limit operation; the
reversed case is applicable for the lower-limit operation.
HoLd: Output during hold mode
When the measured value is held, this output is turned ON after
the delay time. When the hold mode is canceled, the output is
immediately turned OFF. The setting of output delay time (0 to
600 seconds) is also possible.
FAIL: FAIL output
This output is turned ON when over full-scale or system error
occurs. It is also turned ON when the HP-200 malfunctions.
CLn: Cleaning output
The contact signal is output (ON) while the cleaner is operating,
or for 5 seconds after the cleaner has stopped.
"tPS": Time-sharing proportional control (shift function)
Time-sharing proportional control means variably controlling the output
by changing the ON/OFF proportion within a certain period in
accordance with the deviation (difference between control value and
measured value) in order to perform proportional control for a metering
pump for pH control or a control device such as a solenoid valve.
Time-sharing proportional control (shift function) is an effective method
when the control result does not reach the control, e.g., in a continuo
u
treatment process.
"tPF": Time-sharing proportional control (F-zone function)
Time-sharing proportional control means variably controlling the
output by changing the ON/OFF proportion within a certain period in
accordance with the deviation (difference between control value and
measured value) in order to perform proportional control for a
metering pump for pH control or a control device such as a solenoid
valve.
For pH control, it is very important to control the chemical agent when
the deviation becomes smaller. Because of a characteristic specific to
pH control, the injection of a small amount of chemical agent may
cause the control result to exceed the control value.
Time-sharing proportional method (F-zone function) has been devised
as a method to fine-tune the ON/OFF proportion by extending the
OFF time for the normal time-sharing proportional control when the
deviation becomes smaller. It is an effective control method for a
batch treatment process.
This is an effective control method for cases where the control result
greatly exceeds the control value, e.g., in a batch treatment process.
Control value
Measured
value
Contact output
(r1 to r4)
Delay time
6/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
100 Ωmaximum
2mm2 (AWG14) MAX
Maximum load resistance 900Ω
2mm2(AWG14) MAX
Applicable electric wore
Applicable electric wire
Contact input resistance
■Transmission output
The HP-200 is provided with two transmission outputs (4 to 20 mA
DC).
Transmission output 1 outputs pH and transmission output 2
temperature.
For both outputs, the full-scale range of transmission output may be
set freely within the full-scale setting for measured value. The
setting of burn-out (transmission output: 3.8 or 21 mA) is also
possible. The HP-200 allows you to select whether the output value
is temporarily held at the directly previous value or the preset value
when the transmission output is to be held with an external sign
a
Example: Arbitrary setting of transmission output
When the full-scale range for pH measurements is between pH0
and pH14:
The transmission output of 4 mA may be set to pH6 and that of 20
mA to pH8.
Example: Transmission output hold
When the held value is set to the directly previous value:
If an external signal is received when the measured value is pH7.5,
the transmission output maintains the output value of pH7.5.
Main specifications
•The terminal screws for the contact input is of M3.5.
•The applicable electric wire is of 2 mm
2(AWG14) maximum.
Contact input
The HP-200 is provided with contact input as standard.
The output value is held with an external signal.
Major specifications
•The terminal screws for the contact input is of M3.5.
•The applicable electric wire is of 2 mm2 (AWG14) maximum.
For the cable, use a shielded cable.
When lightning might strike, install an arrestor on the output side
of the HP-200 and on the side of receiving instruments.
The resistor for the contact input shall be 100Ωmaximum.
For the transmission output cable, use a shielded cable.
When lightning might strike, install an arrestor on the output side
of the HP-200 and on the side of receiving instruments.
The negative terminal (OUT1) (-) and OUT2 (-) for the
transmission output are internally connected and have the same
electric potential.
(Contact input)
(Transmission output)
7/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
S: pH electrode shield drive
G: Glass electrode terminal
R: Reference electrode
SE: Solution gound
E: Outer shield wire
Stop bit
Character length
T, T: Temperature sensor
For pH electrodes with S terminal and without SE terminal, such
as 6108 and 6109
pH electrode
1 bit
RS-485 communication
conditions
Baud rate 19200 bps
Parity non
8 bit
pH electrode
The pH electrode cable is highly insulated. In handling this cable,
pay attention to the following points:
•Do not wet any cable terminal or the terminal block with water or the
like; also do not soil it with dirt, oil, or the like. The insulation will
otherwise deteriorate.
•The decreased insulation can cause instable readings. Maintain the
electrode cable in a dry, clean state.
•If the electrode cable should be soiled, wipe it off with alcohol or the
like and then well dry it.
•In routing the electrode cable, provide sufficient length for the
calibration of standard solution and the check and replacement of
the electrode.
•Route the electrode cable and the relay cable by avoiding any place
near inducing equipment such as a motor and keeping them away
from the power cable for such equipment.
RS-485
The HP-200 has an RS-485 communication terminal. To use
this terminal, connect wiring.
•The applicable electric wire is of 0.14 to 2.5 mm
2(AWG26 to
14).
•For the communication output cable, use a twisted shielded
pair.
•Up to 32 connections can be made including one for the host
computer. Set the address.
•The communication cable length is 500 m maximum.
•Use a terminating resistor (Rt: 120Ω) for any device at which
the RS-485 communication line is terminated.
Example of external
connection for
communication
RS-485
(communication
output)
HP-200
RS-485
(communication
output)
Host computer
pH electrode : 6108,6109
6110,
6151,6152
Relay cable
(C-5S-YT2-PS)
pH electrode : 6108,6109
6110,
6151,6152
Relay box
(CT-25pH)
8/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.

Version1.0asofOctober,2011
For pH electrodes without S and SE terminals, such as 6110
For pH electrodes with S and SE terminals, such as 6171, 6172, 6173, and 6174
pH electrode
Relay cable
(C-5A-YT2-PS)
Relay box
(CT-25pH)
pH electrode
pH electrode: 6171,6172
6173,6174
Relay box
(CT-25pH)
Relay cable
(C-5A-YT2-PSE)
pH electrode: 6171,6172
6173,6174
9/88page Subjecttochangewithoutpriornotice
forfurtherimprovement.