HVTest HTYWS-H User manual

1
Dear Client
Thank you for Purchasing our HTYWS-H Electrolytic Oil
Moisture Analyzer. Please read the manual in detail prior to first
use, which will help you use the equipment skillfully.
Our aim is to improve and perfect the
company's products continually, so there may be
slight differences between your purchase equipment
and its instruction manual. You can find the changes
in the appendix. Sorry for the inconvenience. If you have further
questions, welcome to contact with our service department.
The input/output terminals and the test column
may bring voltage, when you plug/draw the test wire or
power outlet, they will cause electric spark. PLEASE
CAUTION RISK OF ELECTRICAL SHOCK!
Company Address:
T4，No. 41, High-tech 2 Road，East Lake High-tech Development Zone，
Wuhan
Sales Hotline: [phone]
After Service Hotline:[phone]
Fax: [phone]
E-mail: [email protected]
Website: www.hvtest.cc

2
SERIOUS COMMITMENT
All products of our company carry one year limited warranty
from the date of shipment. If any such product proves defective
during this warranty period we will maintain it for free. Meanwhile
we implement lifetime service. Except otherwise agreed by
contract.
SAFETY REQUIREMENTS
Please read the following safety precautions carefully to avoid
body injury and prevent the product or other relevant subassembly
to damage. In order to avoid possible danger, this product can only
be used within the prescribed scope.
Only qualified technician can carry out maintenance or repair
work.
--To avoid fire and personal injury:
Use Proper Power Cord
Only use the power wire supplied by the product or meet the
specification of this produce.
Connect and Disconnect Correctly
When the test wire is connected to the live terminal, please do
not connect or disconnect the test wire.
Grounding
The product is grounded through the power wire; besides, the

3
ground pole of the shell must be grounded. To prevent electric
shock, the grounding conductor must be connected to the ground.
Make sure the product has been grounded correctly before
connecting with the input/output port.
Pay Attention to the Ratings of All Terminals
To prevent the fire hazard or electric shock, please be care of
all ratings and labels/marks of this product. Before connecting,
please read the instruction manual to acquire information about the
ratings.
Do Not Operate without Covers
Do not operate this product when covers or panels removed.
Use Proper Fuse
Only use the fuse with type and rating specified for the product.
Avoid Touching Bare Circuit and Charged Metal
Do not touch the bare connection points and parts of energized
equipment.
Do Not Operate with Suspicious Failures
If you encounter operating failure, do not continue. Please
contact with our maintenance staff.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in Explosive Atmospheres.
Ensure Product Surfaces Clean and Dry.

4
－Security Terms
Warning: indicates that death or severe personal injury may
result if proper precautions are not taken
Caution: indicates that property damage may result if proper
precautions are not taken.

5
Content
I．Overview………………………………………………….…….3
II．Features………………………………………………………..3
III．Technical parameters…………………………..…………….4
IV．The structure and assembly of instrument…………..…….5
V．Working principle………………………………………..…….8
VI．Menu and key operation instructions………………...…….8
VII．Sample operation………………………………………….15
VIII．Maintenance………………………………………….……17
IX．Common troubleshooting………………………….………19

6
I．Overview
Carl - Philip Hugh coulomb titration method for accurate measuring moisture
content of samples, this method with the advantages of high precision, low
cost. Widely used in electric power, petroleum, chemical, pharmaceutical, food
and other industries.
Carl - Philip Hugh
II．Features
Instrument adopts a powerful new generation processors and peripheral
circuits, which with excellent low-power performance makes it possible to use
small battery power supply, and then achieve the portable function; measuring
electrode signal as a criterion of electrolysis end, its stability and accuracy is
the key factor affecting the measurement accuracy. The use of advanced
devices and methods can achieve the precise detection of measuring
electrode signal; with new software compensation correction algorithm to
improve the measurement accuracy; large-size LCD display with touch keys,
the display interface with curve is intuitive and friendly.
Main features:
1. Adopts 320x240 dot matrix LCD display, touch keys, friendly interface;
2. Using the electrolysis circuit of switch constant-current source, reduce
power consumption of the instrument;
3. High-precision measuring electrode signal and detection circuit can
determine the electrolysis end quickly and accurately, and with strong

7
anti-interference ability;
4. The use of blank current compensation and equilibrium point drift
compensation to correct the measurement results;
5. Measuring electrode signal show as a bar graph on the LCD screen
indicates water content of electrolyte intuitively;
6. Real-time depicts the curve of electrolysis speed changing with time during
electrolysis process, the user can monitor the process of electrolysis, and can
judge whether the electrolyte is ineffective according to the curve;
7. 10 gears stirring speed adjustment; auto electrolysis gains adjustment;
8. With measuring electrode open-circuit fault, short circuit fault automatic
detection functions;
9. Automatically store historical records, up to 100;
10. Calendar clock with temperature compensation is accurate, and can
automatically records the date and time of test; it can run more than 10 years
in the power-down state;
11. With USB interface, it is convenient to communicate with the computer.
III．Technical parameters
1. Accuracy:
Amount of electrolysis water Accuracy
10ug～1000ug ±2ug
>1000ug 0.2%
2. General electrical parameters:
Measurement range: 0ug-200mg
Resolution: 0.1ug
Maximum electrolytic speed: 40ug/s
Power supply voltage: AC220V±20%
Maximum power consumption: 30W
Ambient temperature: 10 ~ 35℃
Ambient humidity: ≤85%

8
Dimensions: 320×240×150(mm)
Net weight: 5kg
IV．The structure and assembly of instrument
1. Host
Figure 4-1 Host
⑴LCD screen and buttons ⑵Electrolytic cell
⑶Power switch ⑷Fuse
⑸Power outlet ⑹RS232 interface
⑺Electrolytic electrode interface ⑻Measuring electrode interfaces
⑼Electrolytic cell stent ⑽Mini printer
2. Electrolytic cell

9
Figure 4-2 Decomposed diagram of electrolytic cell
Figure 4-3 Assembly diagram of electrolytic cell
⑴Measuring electrode ⑵Measuring electrode line
⑶Electrolytic electrode ⑷Electrolytic electrode line
⑸Ion filter membrane ⑹Glass stopper of drying tube
⑺Cathode chamber drying tube ⑻Anode chamber drying tube
⑼Silica gel (drier) ⑽Inlet
⑾Stir ⑿Anode chamber
⒀Cathode chamber ⒁Glass stopper of electrolytic cell
3. Assembly
⑴Put silica gel particles into the drying tube (Figure 4-2 7,8 shows)

10
Note: The piping of drying tube must maintain certain ventilation, cannot
be completely closed, or prone to danger!
⑵Put the milky white silica gel pad into stopcock, and use fastening bolt to
screw uniformly. (see Figure 4-4)
Figure 4-4 Assembly diagram of inlet stopper
⑶Put stir through the inlet into the electrolytic bottle carefully
⑷In the measuring electrode, electrolytic electrode, cathode chamber drying
tube, anode chamber drying tube, inlet stopcock grinding mouth ,evenly coat
with a layer of vacuum grease, after the above components into the electrolytic
bottle, gently rotate to let it seal well.
⑸Using a clean and dry funnel (or use change dispensers) inject 120-150 ml
electrolyte into the anode chamber of electrolytic cell from the seal of
electrolytic cell; Repeat process to inject electrolyte into the cathode chamber
of electrolytic cell; let the liquid height of electrolyte in the cathode chamber
and the anode chamber is the same. In the glass stopper of electrolytic cell
evenly coat with a layer of vacuum grease, gently rotate to let it seal well.
Note: it should be operated in good ventilation environment, do not
inhale or touch the reagents, if touch with the skin, rinse with water.
After completing the above steps, put the electrolytic cell into the electrolytic
cell stent (Figure 4-1, 9), then the electrolytic electrode line and the measuring
Silicone pad
Fastening bolt
Stopcock

11
electrode line with lotus plug separately insert into the electrolytic electrode
interface (Figure 4-1 7) and the measuring electrode interface (Figure 4-1, 8).
V．Working principle
Reagent solution is made up of dominant iodine, pyridine with sulfur dioxide
and methanol. Carl, -- Hugh reagent with water reaction principle is: based on
water, the Iodine is restituted by sulfur dioxide; in the presence of pyridine and
methanol, generate hydroiodic acid pyridine and methyl hydrogen sulfate.
Reaction is:
H20+I2+SO2+3C5H5N → 2C5H5N·HI+C5H5N·SO3 …………(1)
C5H5N·SO3+CH3OH → C5H5N·HSO4CH3 ……………… (2)
In the process of electrolysis, the electrode reaction is as follows:
Anode: 2I- - 2e →I2 ……………………………………………..(3)
Cathode: 2H+ + 2e →H2↑…………………………………….…(4)
Iodine (produced by anode) reacts with water to produce hydroiodic acid, until
all the water reacted completely; the reaction end is instructed by a pair of
detection unit which composed of platinum electrodes. Based on Faraday's
law of electrolysis, number of molecules of iodine in the reaction is equal to
number of molecules of water, and it has a proportional relationship with
charge. The equation of water and charge as follows:
W=Q/10.722 ……………………………………………（5）
Wherein: W -- Moisture content in the sample Unit: MCG
Q -- Electrolytic power Unit: Milli-Coulomb
VI. Menu and key operation instructions
Instrument uses a large-screen LCD display, with touch keys, key functions
defined; users learn to use the instrument easier.
Instrument with five menus

12
⑴Boot welcome menu ⑵Setting adjustment menu
⑶Historical record menu ⑷Sample test menu
⑸Measuring results menu
In the following key operation instructions, the black highlighted figures or
graphics are the modified contents of the current adjustment.
Note: Instrument screen without batteries does not appear battery
symbol
1. Boot welcome menu
After connecting to the power cord, turn on the power switch, the LCD display
as shown in Figure 6-1
Figure 6-1
In the current display interface has the following key operations:
Setting: enter “Setting adjustment menu”
Record: enter “Historical record menu”
Test: enter “Sample test menu”
2. Time adjustment menu
In Figure 6-1, press the "adjust time" key, the LCD display as shown in Figure
6-2:

13
Figure 6-2
Adjusted content is divided into three parts: Date
Time
Test item
In the current display interface has the following key operations:
Item: The cursor moves up and down between date and time
Tabbing: the cursor circulates and moves around in the current line
Increase: the figure at the cursor plus 1, press the key for a long time, rapid
increase in figures.
Decrease: the figure at the cursor minus 1, press the key for a long time, rapid
decrease in figures.
Setting: Update the current date, time and test item. The adjusted date and
time written into instruments, save the setting of test item.
Back: Exit “time adjustment menu” and return to the boot welcome menu
Figure 6-1
Test item: 0: Sample by volume, report micrograms of absolute moisture
content and moisture percentage in mg / L as the unit;
1: Sample by quality, report micrograms of absolute moisture
content and moisture percentage in mass ratio ppm as the unit;
2: Sample by volume, report micrograms of absolute moisture
content and moisture percentage in volume ratio ppm as the unit;
3: Sample by volume, report micrograms of absolute moisture

14
content and moisture percentage in mass ratio ppm as the unit;
3. Historical record menu
In Figure 6-1, press the "record" key, the LCD display as shown in Figure 6-3:
Figure 6-3
Print: Print the current historical record, print content including: sample
number, moisture content, moisture percentage, inspection date and
inspection time.
Previous page: Show the previous historical record, record number plus 1,
press the key for a long time, fast forward flip, the maximum record number is
99.
Next page: Show the next historical record, record number minus 1, press the
key for a long time, fast backward flip, the minimum record number is 0.
Back: Exit “historical record menu” and return to the boot welcome menu
Figure 6-1
4. Sample test menu
In Figure 6-1, press the "test" key, the LCD display as shown below:
This function with 4 menus:
⑴Instrument automatically electrolyze excess moisture content of reagent to
reach equilibrium state as shown in Figure 6-4;
⑵Reagent to reach equilibrium, the sample can be measured in Figure 6-5;
⑶After the start of the measurement, wait to add the measured sample in
Figure 6-6;

15
⑷Measuring in Figure 6-7;
Figure 6-4 Figure 6-5
Figure 6-6 Figure 6-7
“Sample test menu” is the main menu of the instrument; the following
parameters can be adjusted:
⑴Adjust the electrolyte stirring speed: make the electrolyte just can produce
whirlpool, but can't produce bubbles. The adjustment range is 0-9.
Note: Stirring speed should be finished before the start of the
electrolysis process; after the start of the electrolysis process to adjust
will affect the test results.
⑵Adjust sample No.: in order to mark the record.
⑶Enter the sample volume or weight: as the basis for calculating the
moisture content.
X-axis with three types: 90 seconds, 180 seconds, 12 minutes, automatic
conversion over time.
Key functions are defined as follows:

16
Item: Select the item you want to adjust, circulating select in the above
parameters
Tabbing: When the adjusted parameter type is a figure, tab key to horizontally
move the cursor;
Increase: Increase the figure at the cursor
Decrease: Decrease the figure at the cursor
Start: If the instrument is ready, will start to electrolytic process.
Back: Return to the boot welcome menu Figure 6-1
Measurement process is described as follows:
⑴Judge whether the measuring electrode is open or short circuit fault.
⑵Judge whether the electrolyte is in the balance region or not, if the
electrolyte is in the over iodine state, then displays the amount of water that
need to add; if in the over water state, will automatically electrolyze excess
moisture content to reach equilibrium state.
Note: For newly injected electrolyte, with 50μl injector through the inlet to the
anode chamber of electrolytic cell slowly into water, observe the electrolyte
color which from dark brown gradient to light yellow; at this time continue to
inject 10uL water, the instrument automatically electrolyze excess moisture
content until to reach equilibrium.
⑶Electrolyte in equilibrium, it will be automatically blank current detection
and electrolyte drift detection, used to correct the measurement results.
⑷After completing the above steps, the instrument prompts the user to start
measuring. At this point the sample is ready, press the start button, inject the
sample to the electrolytic cell within 1 minute, more than 1 minute without
injecting the sample, the instrument will automatically ignore the test results,
wait for the user to start again.
⑸After the instrument detecting the added sample, will begin to electrolytic
process, accumulate moisture content and draw the electrolytic curve.
Note:

17
⑴Before testing the sample, the instrument should be calibrated with water.
With 0.5ul injector inject 0.1ul water, then the test result of the instrument
should be "100 ± 3ug (excluding the sampling error)", the general calibration 2
-3 times, the result within the error range can measure sample.
⑵In the normal measuring process, per 100 ml of the reagent can be used
with not less than 200 mg of water reaction, if the measuring time is too long,
the reagent sensitivity decreased, should replace new reagents. According to
the following methods to judge whether the electrolyte is failure or not: If the
electrolyte in the electrolytic process release a lot of bubbles or reagent
contaminate into reddish brown, the reproducibility of the test results at this
time will be reduced, but also to reach the end of time longer, this situation
should replace reagents as soon as possible; according to the depicted
electrolytic speed curve to judge whether the electrolyte is failure or not. (See
Figure 6-8)
Reagents good Reagents failure
5. Measuring results menu
The instrument in the electrolysis process detecting the stop signal of the
measuring electrode, stop measuring. If set to gas or liquid sample
measurement, calculation of moisture content immediately, generate result
report sheet. LCD display as shown in Figure 6-9

18
Figure 6-9
If set to a solid sample measurement, the instrument prompts to enter the
sample tare weight, after entering to press the "Start" key, the instrument
automatically calculates the sample weight and moisture content, generate
report sheet as Figure 6-9.
The current menu, the key functions are defined as follows:
Print: Print the current measuring result report
Storage: Save the current result report as historical record
Retest: Back to the sample test menu Figure 6-5.
Back: Return to the boot welcome menu Figure 6-1
VII. Sample operation
The measurement range of the instrument is 0μg ~ 100mg, in order to obtain
accurate measuring results, appropriately according to the moisture content of
the sample to control the sample volume.
1. Liquid sample
Measuring liquid sample: With the injector through the inlet inject the sample
into the anode chamber of electrolytic cell. Needle must be wiped with filter
paper before the injection, when inject the sample into the electrolytic cell, the
needle of liquid injector should be inserted in the electrolyte reagents, do not
touch the inner wall of electrolytic cell and the electrode.
2. Solid sample
Solid sample may be powder, granules or clumps and other shapes (large

19
clumps must be broken). When the sample insoluble in reagent, you must
select a suitable water evaporator connected to the instrument.
The following is the dissolved solid sample in the reagent as an example to
illustrate the solid sample.
盖子
Figure 7-1
⑴Solid injector as shown in Figure 7-1, clean with water and dry well.
⑵Remove the cover of solid injector, encase the sample, cover immediately
and accurately weighing.
⑶Remove the inlet cocks of electrolytic cell, the injector shown in solid lines
in Figure 7-2 into the inlet. The solid injector rotated 180 degrees, as shown in
broken lines in Figure 7-2, the sample fall into the reagent, until the measuring
completed. When solid sample fall into reagent, it shall not contact with the
electrolytic electrode and measuring electrode.
Figure 7-2
Cover

20
The solid injector after sampling and the cover accurately weighing again,
calculate mass of the sample according to the difference between the two
weighing, then to calculate moisture content.
3. Gas Sample
In order to make the moisture in the gas be absorbed by reagent, you must use
a connector which control sample to inject to the electrolytic cell at any time
(see Figure 7-3). when measuring the moisture in the gas sample, the
electrolytic cell must be injected into about 150 ml reagent to ensure the
moisture in the gas absorbed adequately, while the gas flow rate should be
controlled at about 500 ml / minute, if the reagent in the measuring process
significantly reduced, should be injected into about 20 ml glycol (also
according to the actual measured object to add to the other chemical
reagents).
Figure 7-3
VIII. Maintenance
1. Place to put the instrument
⑴Put it in the cool place, the indoor temperature at 5 ℃~ 35 ℃.
⑵Do not install the instrument in the humidity, power fluctuations
environment.
⑶Do not place the instrument in the corrosive gas environment.