Omega HH806U User Manual

1

HH806U/HH806AU

MULTILOGGER THERMOMETER

INSTRUCTION

SHEET

Shop online at: omega.com e-mail: [e-mail]

MADE IN TAIWAN

M4502/0711

For latest product manuals: omegamanual.info

OMEGAnetOn-Line Service

omega.com

Servicing North America:

U.S.A: One Omega Drive, Box 4047

ISO 9001 Tel: [phone] FAX: [phone]
Certified

Canada: 976 Bergar

U.S.A Sales Service: 1-800-826-6342/1-800-TC-OMEGA
and Customer Service: 1-800-622-2378/1-800-622-BEST
Canada:

Mexico: En Espan ol: [phone]-7803

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Czech Frystatska 184, 733 01 Karviná, Czech Republic
Republic: Tel: [phone] FAX: [phone]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

Germany/ Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
Austria: Tel: + 49 (0)7056 9398-0 FAX: [phone]

United One Omega Drive, River Bend Technology Centre
Kingdom: Northbank, Irlam, Manchester
ISO 9002 M44 5BD United Kingdom
Certified

It is the policy of OMEGA Engineering, Inc. to comply with all
worldwide safety and EMC/EMI regulations that apply. OMEGA
is constantly pursuing certification of its products to the
European New Approach Directives. OMEGA will add the CE
mark to every appropriate device upon certification.
The information contained in this document is believed to be
correct, but OMEGA accepts no liability for any errors it
contains, and reserves the right to alter specifications without
notice.

should not be used for, human applications.

Stamford, CT 06907-0047

e-mail: [e-mail]

Laval (Quebec) H7L 5A1, Canada
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

e-mail: [e-mail]
FAX: [phone] [e-mail]

Servicing Europe:

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Toll Free: 0800-1-66342 e-mail: [e-mail]

Tel: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

Tel: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

These products are not designed for use in, and

Internet e-mail

[e-mail]

®

®

INTRODUCTION

The instrument is a portable digital thermometer that
measures external thermocouples of type K, J, R, S, T, E,
N. The thermocouples types comply with the N.I.S.T. –
ITS 90 standard reference temperature/voltage tables.
The thermometer features a dual thermocouple input, an
adjustable T/C offset and an USB interface for uploading
data to a PC using optional software and cable.

SAFETY INFORMATION

To avoid electrical shock, do not use this instrument

when working voltages at the measurement surface

To avoid damage or burns, do not make temperature

measurement in microwave ovens.

Repeated sharp flexing can break the thermocouple

leads. To prolong lead life, avoid sharp bends in the

leads, especially near the connector.

WARNING

over 24V AC or DC.

WARNING

CAUTION

SPECIFICATIONS

ELECTRICAL

Temperature Scale:
Measurement Range:

K-TYPE (0.1°) -200°C to 1372°C (-328°F to 2501°F)
J-TYPE (0.1°) -210°C to 1200°C (-346°F to 2192°F)
T-TYPE (0.1°) -200°C to 400°C (-328°F to 752°F)
E-TYPE (0.1°) -210°C to 1000°C (-346°F to 1832°F)
R-TYPE (1°) 0°C to 1767°C (32°F to 3212°F)
S-TYPE (1°) 0°C to 1767°C ( 32°F to 3212°F)
N-TYPE (0.1°) -50°C to 1300°C ( -58°

*Based on the ITS-90 temperature standard.

According to temperature standard ITS-90.

Accuracy:

K/J/T/E-TYPE

±(0.05% rdg + 0.3°C) on -50°C to 1372°C
±(0.05% rdg + 0.7°C) on -50°C to -210°C
±(0.05% rdg + 0.6°F) on -58°F to 2501°F
±(0.05% rdg + 1.4°F) on -58°F to -346°F

N-TYPE

±(0.05% rdg + 0.8°C) on -50°C to 0°C
±(0.05% rdg + 0.4°C) on 0°C to 1300°C
±(0.05% rdg + 1.6°F) on -58°F to 32°F
±(0.05% rdg + 0.8°F)

R/S-TYPE

±(0.05% rdg + 2°C) on 0°C to 1767°C
±(0.05% rdg + 4°F) on 32°F to 3212°F

Temperature Coefficient:

0.1 times the applicable accuracy specification per °C
from 0°C to 18°C and 28°C to 50°C (32°F to 64°F and
82°F to122°F).

Celsius or Fahrenheit user-selectable

F to 2372°F)

on 32°F to 2372°F

Input Protection:

24V dc or 24V ac rms maximum input voltage on any
combination of input pins.

Reading Rate: 2.5 time per second.

ENVIRONMENTAL

Ambient Operating Ranges:

0°C to 50°C (32°F

to 122°F) <80% R.H.

Storage Temperature:

-20°C to 60°C (-4°F to 140°F) <70% R.H.

GENERAL

Display:

There are three display areas on the HH806 series LCD
(liquid crystal display). The Main and Second displays
are 4 ½ digits with a maximum reading of 19999. These
are used for displaying the value of T1 or T2. The Third
display is for the date, time, or the differential value of
T1 to T2.

Overload: “----.-” or “OL” is display.
Battery: 1.5V x 4 PCS (
Battery Life: 120 hours typical with carbon zinc battery.
Dimensions: 160mm(H) x 83mm(W) x 38mm(D).
Weight: Approx. 365g including batteries.
Supplied Thermocouple:

1 meter (40”) type K insulated beaded wire thermocouple
Maximum insulation temperature is 482°C (900°F).
Thermocouple accuracy is ±1.1°C or 0.4% of reading
(whichever is greater) from 0°C to 1250°C.
Wire Communication Protocol:
2400 baud rate. (HH806U)
192

00 baud rate. (HH806A)

External Connections:

1. USB Port

2. DC power JACK(12V)

SIZE AAA) UM-4 R03.

2

OPERATING INSTRUCTIONS

1. OPERATIONAL MODE

There are three operation modes-Normal, Shift, and
Setup Mode.
NORMAL MODE:

This is the default mode, the operating functions for
the normal mode are printed on the top of each button
in white.

SHIFT MODE:

The operating functions for the shift mode are printed
in gray on the buttons. While in the normal mode,
press the SHIFT button to switch to shift mode. At the
lower-right corner of the display, the word “Shift” is
displayed to indicate shift mode. To switch back to
normal mode, press the SHIFT button again.

SETUP MODE:

Press the set[ ] button in normal mode to switch to
setup mode, the indicator “SET” is shown on the left
side of the display. To switch back to normal mode,
press SET[ ] button.

2. NORMAL MODE

The following functions can only be used in the normal
mode.

(1) “ ” Power Button

The “ ” button turns the thermometer on or off.
When the meter is in MAX/MIN record mode, the
power off function is disabled.

(2) “[LIMITS]” Button (only Main display)

The limits function will alert the user when a meas­urement exceeds a specified limit. To set the limit val­ues, refer to limits function in the setup mode. Press
the [LIMITS] button to activate the limits function; the
word “LIMIT” should be displayed on the LCD.
When the value of the main display exceeds the Hi
limit, the word “Hi” will be displayed and the ther­mometer will beep in a pulsed tone. If the value of the
main display is lower then the Lo limit, the word “Lo”
will be displayed and the thermometer will beep in a
continuous tone. To exit the limits function, press the
[LIMITS] button.

(3) “ ” Button

The backlight function is represented by this button
“ ”. Pressing the button will turn on or off the LCD
backlight. The backlight will turn off automatically af­ter.

(4) “SAVE/READ” Button

The read data function works in conjunction with the
save function in the shift mode, it is used for reading
saved data. The save function can be activated in shift
mode. Press the SAVE/READ button to read saved
data; the word “READ” should be displayed on the
LCD. To navigate around the save data table, press the
overlay “SECOND” button until the “#” sign is dis­played on the second display. The location of the read
pointer within the saved data table will be displayed.
The arrow buttons on the overlay are used for scrolling
through the saved data. Press the smaller arrows “ ”

or “ ” to step through the data one at a time. Press the
larger arrows “ ” or “ ” to step through the data
ten at a time. Pressing the overlay “ESC” button deac­tivates the read data function.

(5) “LOG/READ” Button

The read log function works in conjunction with the
log function. It is used for reading logged data. The log
function can be activated in the shift mode. Press the
LOG/READ button to activate the log read function;
the word “READ” is displayed on the LCD. Press the
overlay SECOND button to rotate through following
display menus: T1, T2, GRP, and #. T1 and T2: Dis­plays the T1 or T2 saved data. GRP: Displays the cur­rent group number. #: Displays the current location of
the read pointer within a selected group. The arrow
buttons on the overlay are used for scrolling through
the data and groups. Press the smaller arrows “ ” or
“ ” to step through the logged data or groups one at a
time. Press the larger arrows “ ” or “ ” to step
through the data or groups ten at a time. To navigate
the logged data and groups, press the overlay
SECOND button until GRP appears in the second dis­play panel. Then select the group using the arrows.
Press the SECOND button again until the “#” sign is
displayed. The location of the read pointer in the se­lected group will be displayed. Use the arrows to
scroll through the data. Pressing the overlay “ESC”
button deactivates the read data function.

(7) HOLD Mode (only Main display)

When HOLD mode is selected, the thermometer holds
the present readings and stops all further measure­ments. To activate the data hold mode, press the
HOLD button, and “HOLD” is displayed on the LCD.
Pressing the HOLD button again cancels the function,
and the instrument will automatically resume meas­urements.

(8) MIN/MAX with Time record Mode

(only Main display)

The MIN/MAX function records the highest and low­est value recorded, and it calculates the average read­ing, and the differences of MAX to MIN. Press
MIN/MAX button to enter the MIN/MAX recording
mode. The beeper emits a tone when a new minimum
or maximum measurement is recorded. Press the
MIN/MAX button again to rotate through the current
readings: MAX: The highest measurement recorded.
MIN: The lowest measurement recorded. MAX-MIN:
The difference of the highest and the lowest measure­ment. AVG: The average values of the measurements.
This mode works in conjunction with the hold function,
pressing the HOLD button will stop the recording and
measurements (Previously recorded readings are not
erased). Press HOLD button again to resume recording
and measurements. To prevent accidental loss of MIN,
MAX and AVG data, the MIN/MAX function can only
be cancelled by pressing and holding down the MIN
MAX key for more then 2 seconds. The automatic
power-off feature, and the power, °C/°F, REL, SET,
Hi/Lo Limits, TYPE, T1/T2 buttons are also disabled.

(10) “T1/T2” Button (Main display)

The input selection button [T1/T2] selects the input for
the main display, T1 thermocouple or T2 thermocou­ple. Press the T1/T2 button to switch between the two
inputs. When meter is turned on, it is set to the display
that was last in use.

(11) “T1/T2” Button (Second display)

The input selection button [T1/T2] selects the input for
the second display, T1 thermocouple or T2 thermo­couple. Press the T1/T2 button to switch between the
two inputs. When meter is turned on, it is set to the
display that was last in use.

(12) “T1-T2/TIME” Button (Third display)

The input selection button [T1-T2] selects the system
time and date, or the differential between the two ther­mocouples (T1-T2) for the third display. Press the
T1-T2 button to switch the display options. When me­ter is turned on, it is set to the display that was last in
use.

3. SHIFT MODE

The following functions can only be used in the shift
mode.

(2) “°C/°F” Button

Press the °C/°F button to select the temperature scale,
readings can be displayed in Celsius (°C) or Fahrenheit
(°F). When the thermometer is turned on, it is set to
the temperature scale that was last in use.

(4) “SAVE” Button

The save function stores the T1, T2 data in a nonvola­tile memory. Press the SAVE button to save the cur­rent data, the word SAVE is displayed to indicate the
data has been saved. The built in memory can store up
to 128 data (HH806U)/256 data (HH806AU). The data
can be read using the read function in the normal
mode.

(5) “LOG” Button (HH806U)

The data log function continuously records the data
according to a specified time interval. The time inter­val can be set using the interval setup function [INVT]
in the set up mode. Press the LOG button to activate
the log function; the indicators “LOG” and “MEM”
will be displayed on the LCD. There are 16 groups that
are used for storing the log data, and each group uses
64 data slots. If the current log session exceeds 64 data,
the log function will automatically use the next group
to store the following data. A maximum of 1024 data
point can be saved in one log session. Press the LOG
button again to exit the data log function.

“LOG” Button (HH806AU)

The data log function continuously records the data
according to a specified time interval. The time inter­val can be set using the interval setup function [INVT]
in the set up mode. Press the LOG button to activate
the log function; the indicators “LOG” and “MEM”
will be displayed on the LCD. There are 16 groups that
are used for storing the log data. A maximum of
16,000 data point can be saved in one log session.
Pressing the LOG button again to exit the data log

function.

(6) “CLR ?” Button

The CLR function clears all the saved and logged data
in memory. When the CLR button is pressed, indicator
“MEM” is displayed and the “CLR” on upper-right of
LCD will blink. Pressing the “ENTER” button printed
on the overlay in white will clear all saved and logged
data. Press “ESC” button to exit this function without
clearing data.

(7) “REL” Button (Main display)

The relative value function can be used for comparing
the saved reference value with other measurements.
Press the “REL” button to store the current measure­ment as the reference value, and “REL” should be dis­played on the right part of the LCD. The next meas­urement will display the current value compared to the
reference value. Press “REL” button again to clear the
reference value and deactivate the relative value meas­urement function.

(8) “APO” Button

Press the APO button to turn the “Auto power off”
function on or off. When this function is enabled, the
indicator “APO” is shown at the upper left part of the
LCD. When APO (Auto power off) is enabled, it will
automatically turn the thermometer off no button is
pressed for a period longer than the set time interval
(the default time for APO is 5 minutes). Press power
button to resume operation.

(10) “TYPE” Button (Main display)

Press this button to change the type of thermocouple in
the main display (K/J/T/E/R/S/N). If the inputs of the
main and second display are the same, then pressing
this button will change the thermocouple type for both
displays.

(11) “TYPE” Button (Second display)

Press this button to change the type of thermocouple in
the second display (K/J/T/E/R/S/N). If the inputs of the
main and second display are the same, then pressing
this button will change the thermocouple type for both
displays.

4. SETUP MODE

The following functions can only be use in the setup
mode.

(2)

“[LIMITS]” Button (Hi/Lo limit setting)

Press the LIMITS button to enter the Hi/Lo limit setup
function. The words “LIMIT” and “Hi” will be flash
on the LCD along with the previous value for the Hi
limit. Enter the new Hi limit value using the number
keys printed in white on the overlay. The resolution of
Hi/Lo limit setup is 1 count. The “-” button (same
button as the ESC) can be used to enter negative val­ues. Press the “ENTER” button to confirm the new
limit. You will then be prompted to enter a new Lo
limit value. Enter the new value and then press enter
to finish setup of limits.

(3) “[INVT]”

To setup the time interval for the log function, press
the [INVT] button. The indicator “INV” will blink on

Button

(Interval time setting)

the top-right of the LCD and the previous interval is
displayed. Press the number buttons printed in white
on the overlay to change the time interval. Setting is
from left to right of the following format (HH:MM:SS).
Press the overlay “ENTER” button to confirm. To exit

this function, press the ESC button.
HH: interval Hour (0~23)
MM: interval Minute (0~59)
SS: interval Second (0~59)
MAX: 23:59:59
MIN: 00:00:01

(8) “APO” Button (Auto power off time setting,

min. 1 minute)

Use this function to change the time for the auto power

off (APO) function. Press the APO button in setup

mode, and the indicator “APO” and the current time

will flash on the LCD. The default time for APO is 5

minutes. Press the number button printed in white on

the overlay to set the APO time. Press the overlay

“ENTER” button to confirm. To exit this function

without changing the

setting, press the ESC button.
MAX: 19999 minutes
MIN: 0001 minutes

(9) “[OFS]” Button (Thermocouple offset ad-

just)

When the main display input is T1 and a thermocouple
is connected, the instrument can adjust the offset of the
thermocouple. The same can be done for T2 when on
the main display. In the setup mode, press this button
to enter the thermocouple Offset Setup Function (OFS)
and the indicator CAL should be displayed

on the
top-right of the LCD and the current setting is also
shown. Press the number buttons printed in white on
the overlay to change the offset of the thermocouple.
The resolution of the setup is 0.1°. Press the “-” button
to set a negative value. Press the overlay “ENTER”
button to confirm. MAX: ±1999.9 °C/°F.

(12) “[TIME]” Button (System time setting)

To set the system time, press the [TIME] button in the
setup mode. The th
date and time with the year flashing. Enter the new
value from left to right in the following format
YY:MM:DD and HH:MM:SS. Press the number but­tons printed in white on the overlay to set the system
date and time. Press the “ENTER” button to confirm.
Exit this function by pressing ESC button.

ird display should show the current

Error messages:

When the meter appears wrong messages such as Err-01,
Err-02 and Err-03.
Err-01: In the

“SAVE” mode, if memory is full, the lower
right display will show Err-01. If you would like
to record the new value. Please clear all old re­cords.

Err-02: In the “LOG” mode, if memory is full, the lower

right display will show Err-02. If you would like
to record the new value. Please clear all old re­cords.

Err-03: In the “READ LOG” and “READ SAVE” mode,

when the main display shows 6028 and the lower
right display shows “O

L, Err-03”. Which means

that there might appear two situations:

1. There is no data in the memory.

2. The memory is ful l, and the meter will warn

the user this is the last sample.

OPERATOR MAINTENANCE

To avoid possible electrical shock, disconnect the

thermocouple connectors from the thermometer before

Battery Replacement

1. Power is supplied by 4pcs 1.5V (AAA SIZE) UM-4
R03.

2. The “

” appears on the LCD display when replace­ment is needed. To replace battery remove screw from
back of meter and lift off the battery cover.

3. Remove the battery from battery contacts and replace.

4. When not in use for long periods remove battery.

5. Do not store in locations with high temperatures, or
high humidity.

Cleaning

Periodically wipe the case with a damp cloth and deter­gent, do not use abrasives or solvents.

*Soft

ware Operation manual is in the Software disk.

WARNING

removing the cover.

OMEGA ENGINEER ING, INC. warrant s this unit to be free o f defects in
mate rial s and workm anshi p for a peri od of 1 3 months from date of
purchase. OMEGA’s WARRANTY ad ds an additional one (1) mont h grace
period to the normal one (1) year product warranty to cover handling
and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation.
OMEGA’s Customer Service Department will issue an Authorized Return (AR)
number immediately upon phone or written request. Upon examination by
OMEGA, if the
no charge. OMEGA’s WARRANTY does not apply to defects resulting from
any action of the purchas er, i nclud ing but not limited to misha ndling ,
improper interfacing, operation outside of design limits, improper repair, or
unaut horize d modi ficati on. This WARRAN TY is VOI D if the u nit shows
evidence of having been tampered with or shows evidence of having been
damaged as a result of excessive corrosion; or current, heat, moisture or
vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not
warranted, i

OMEGA is pleased to offer suggestions on the use of its various
products. However, OMEGA neither assumes responsibility for any
omission s or errors nor assum es liabili ty for any d amages that
result from the use of its products in accordance with information
provided by O MEGA, either verbal or written. OMEGA warrants
onl y tha t the par ts manuf act ured by the compa ny will be as
sp ec ifi ed a nd fr ee of def e ct s. O ME GA MAK ES N O OTH ER
WA R RA NT IES OR R EP R ES E NT ATI O NS O F A NY K IN D
WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE,
AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
AR E HER EB Y DIS CL AIME D. L IM ITAT IO N OF LI AB IL IT Y: Th e
remedies of purchaser set forth herein are exclusive, and the total
liability of OMEGA with respect to this order, whether based on
contract, warranty, negligence, indemnification, strict liability
otherwise, shall not exceed the purchase price of the component
upon which liability is based. In no event shall OMEGA be liable
for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor
shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in
or with any nuclear installation or activity; or (2) in medical applications or
used on humans. Should any Product(s) be use d i n o r wi th any nuclear
installation or activity, medical application, used on humans, or misused in
any way, OMEGA assume s no r espon sibi lity as set fort h in our basic
WARRA NTY / DISCLA IMER l angu age, a nd, a ddition ally, p urch aser w ill
indemnify OMEGA and hold OMEGA harmless from any liability or
whatsoever arising out of the use of the Product(s) in such a manner.

Direct all warranty and repair requests/inquiries to the OMEGA Customer
Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA,
PURCH ASER MUST OBTAIN AN AUTHORIZE D RETURN (AR) NUMBER
FRO M OMEGA’S CUS TOMER S ERVICE DEPA RTME NT ( IN O RDER TO
AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and
proper packaging to prevent breakage in transit.

ARRANTY RETURNS, please

FOR W
have the following information
available BEFORE contacting
OMEGA:

1. Purchase Order number under
which the product was
PURCHASED,

2. Model and serial number of the
product under warranty, and

3. Repair instructions and/or specific
problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever
an improvement is possible. This affords our customers the latest in
technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2011 OMEGA ENGINEERING, INC. All rights reserved. This
document may not be copied, photocopied, reproduced, translated, or
reduced to any electronic medium or machine-readable form, in whole or
in part, without the prior written consent of OMEGA ENGINEERING, INC.

WARRANTY/DISCLAIMER

unit is found to be defective, it will be repaired or replaced at

nclude but are not limited to contact points, fuses, and triacs.

damage

RETURN REQUESTS / INQUIRIES

FOR NON-WARRANTY REPAIRS,
consult OMEGA for current repair
charges. Have the following
information available BEFORE
contacting OMEGA:

1. Purchase Order number to cover
the COST of the repair,

2. Model and serial number of the
product, and

3. Repair instructions and/or specific
problems relative to the product.

or

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE

Thermocouple, RTD & Thermistor Probes,
Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories

FLOW/LEVEL

Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers

pH/CONDUCTIVITY

pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment

DATA ACQUISITION

Data Acquisition & Engineering Software
Communications-Based Acquisition Systems
Plug-in Cards for Apple, IBM & Compatibles
Data Logging Systems
Recorders, Printers & Plotters

HEATERS

Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters

ENVIRONMENTAL MONITORING AND CONTROL

Metering & Control Instrumentation
Refractometers
Pumps & Tubing
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments

®