Omega HH911T, HH912T User Manual

HH911T, HH912T

Thermocouple Thermometer

TM

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User’s Guide

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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.

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U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [e-mail]

For Other Locations Visit omega.com/worldwide

Table of Contents

Table of Contents

Instrument Description .............................................................................................. 2-1

Specifications .............................................................................................. 2-1

Optional Accessories and Ordering Information ................................................. 2-2

Omega Family of Thermometers ..................................................................... 2-2

2. Preparation for Use .............................................................................................. 2-1

General Information ...................................................................................... 2-1

Feature Overview ......................................................................................... 2-1

Safety Notices and Information....................................................................... 2-2

Unpacking and Inspection .............................................................................. 2-4

Battery Installation and Replacement .............................................................. 2-4

Making Your First Temperature Measurement ................................................... 2-5

3. Operating Instructions ......................................................................................... 3-1

Keypad Functions ......................................................................................... 3-1

LCD Display ................................................................................................. 3-1

Setup Menu ................................................................................................. 3-3

View Modes and Statistics .............................................................................. 3-4

Auto-Power Off ............................................................................................ 3-5

Backlight and Backlight Timeout ..................................................................... 3-6

Hold Function .............................................................................................. 3-6

Trend Indicators ........................................................................................... 3-6

Battery Indicator .......................................................................................... 3-6

Probe Offset ................................................................................................ 3-7

Open Wire Detection On/Off ........................................................................... 3-8

Clear Function .............................................................................................. 3-9

Invalid Measurement Indications ..................................................................... 3-9

Resolution and Rounding Functions (Serial Number 2148 and later) ..................... 3-9

4. Service Information ........................................................................................... 4-11

Inspection and Cleaning .............................................................................. 4-11

Calibration ................................................................................................ 4-11

4.2.1 Verification Procedure .............................................................................. 4-11

4.2.2 Alignment Procedure ............................................................................... 4-12

Troubleshooting ......................................................................................... 4-15

Diagnostic Routines and Error Codes ............................................................. 4-17

Memory Sterilization ................................................................................... 4-17

A. Required Equipment ............................................................................................. A-i

B. Expanded Instrument Uncerta int ies ......................................................................... B-i

C. Instrument Verification Data Sheet ................................................................ C-4.2.2-i

Instrument Description

2-1

INSTRUMENT DESCRIPTION

Specifications

G

ENERAL SPECIFICATIONS

:

Basic Accuracy

±(0.04% |r dg | + 0. 3 °C )1

Conformity

ITS-90

Temperature Ranges

°C

°F

K

K -200 to 1372

-328 to

2502

73 to 1645

J -210 to 1200

-346 to

2192

63 to 1473

T

-250 to 400

-418 to 752

23 to 673

E -250 to 1000

-418 to

1832

23 to 1273

Connector Type

One (1) Mini-TC

(HH911T)

Two (2) Mini-TC

(HH912T)

Probe Zero Fun ction

Resolutio n 0. 1 °C / °F /K

Display

Four (4) digit LCD, with Temperature, Units,

Function, Trend, Polari ty, Battery, and Decimal
Indicators

Display Backlight

Four (4) LED Backlight with 30-second timeout

Display Resolution

0.1° <1000°

1 ° ≥ 1000°

Reading Rate

3 / Second for Readings and Tren d Indi cato rs

Battery Type

3 AA (IEC LR6, ANSI 15) Alkali ne

Battery Life

2000 Hours Typical

Battery Ind i c ato r

Four (4) Sta ge Ba t tery Charge Indic a to r

Statistics

Minimum Readi n g

Maximum Reading
Average Reading

Reading Range

Standard Deviation
T1–T2 (HH912T only)

Keypad

Eight (8) momentary switches with audible and

tactile feedback

Clock

Elapsed Statistics Run Time

Power Cycle Configuration
Retention

Instrument retains last selected:

- Sensor Type

- Temperature Unit

- Offset Values

Input Current

±50 nA

Maximum Common Mode Vol ta ge 42 V peak to earth

1 V p-p between T 1

and T2

Instrument Description

2-2

Compliance

CE (2014/30/EU) / RoHS2 (2011/65/EU)

ESD

IEC 61000-4 2:2009, Class B

EMC

EN 55022:2010+A1:2015,

Class A; EN 6 1000-4
3:2006+A2:2010, 10 V/m (80
MHz to 1 GHz)

MIL-PRF-28800F, Class 2

E

NVIRONMENT

:

Standards

MIL-PRF-28800F, Class 2

UL 60079-0 § 26.4.2

Operating Temp

-20 to 55 °C

-4 to 131 °F

Temperature
Coefficient

For specification v a ri a nce s du e to ambient operatin g

temperature, se e t he Expanded Inst rum e n t Uncertainty ch arts
in Appendix

B of this manual. For ambient operating
temperatures not sh ow n i n Appendix B, accuracies shall be
interpolated linearly.

Humidity

<10 °C (50 °F): Non-condensing

10 to 30 °C (50 to 86 °F): 5 to 95% RH
30 to 40 °C (86 to 104 °F): 5 to 85% RH
40 to 55 °C (104 to 131 °F): 5 to 60% RH

Altitude

0 to 4600 m

0 to 15,092 ft

Vibration

Random 10 – 500 Hz, 0.03 g2/Hz

Shock

30g Half Sine

Drop

4 Drops from 1 m t o C o nc ret e

Storage Temp

-40 to 71 °C

-40 to 159 °F

P

HYSICAL CHARACTERISTICS

:

Dimensions

193 x 84 x 28 mm

7.6 x 3.3 x 1.1 in

Weight (incl.

Batteries)

HH911T: 300.9 g (10.6 oz.) HH912T: 303.2 g ( 10.7 oz.)

1

For complete instrument accuracies, see the Expanded Instrument Uncertainty charts in Appendix B of

this manual.

Optional Accessories and Ordering Information

P

RODUCT

M

ODEL

D

ESCRIPTION

Visit omega.com for available thermocouple

probes

Printed Manual

M5610/0918

Operation Manual

Omega Family of Thermometers

Thermocouple

Thermometers

HH911T

Thermocouple Thermometer, Single Inpu t

HH912T

Thermocouple Thermometer, Dual Input

HH931T

Data Thermometer, Single Input

Instrument Description

2-3

Data

Thermometers

HH932T Data Thermometer, Dual Input

Preparation for Use

2-1

2. PREPARATION FOR USE

General Information

The Omega HH911T and HH912T Thermocoupl e Th erm omete rs a re hig h -accuracy handheld
digital thermometer s t ha t p ro vi de accurate temperatu re readings in a wide range of
manufacturing and service applicati ons . These full-featured, durable, and ve rs atil e
instruments simplify the process of temperature measurement through the in tuitive user­interface. They are compatibl e w it h t he four most popular NIST traceable thermocouple
types, K, J, T, and E.

Feature Overview

• Keypad with audible and tactile feedback;

• 2000-hour battery life

1

;

• Four (4) digit dual LCD with LED Backlight

;

• Four (4) NIST-traceable thermocouple types: J, K, T, and E;

• Comprehensive real-time statistics: MIN, MAX, AVG, RNG, STDEV, and T1-T2

2

;

• Easy to clean

• Probe offset function to minimize probe error

;

• 0.1° / 1 ° display resolution

;

• °F, °C, and K temperature units

;

• Reading HOLD mode

;

• Conforms to ITS-90 thermocouple tables

;

• Durable: Meets MIL-PRF-28800F, Class 2 requirements

;

• Tilt Stand/Magnet/Hanger

• User-friendly operation

;

• Retains measurement parameters, even when turned off

;

• Self-diagnostic routi ne to identif y fault conditions

;

• Low battery and open sensor indications

;

1

Typical battery life under normal use conditions in laboratory environment. Continuous or
repeated use of features such as the backlight or use or storage at high or low temperature
extremes may reduce battery life.

2

T1-T2 is available on model HH912T only.

Preparation for Use

2-2

Safety Notices and Information

Symbols and Term s

Safety Notices de note h azard s. They indi ca te an o pera ting p roced ure, i nstr ucti on, or pr acti ce
that, if not correctly performed or followed, could result in damage to equipment, or injury or
death to personnel. Do not proceed beyond a Safety Notice until all conditions and instructions
are fully unde rs tood and complied with.

WARNING WARNING denotes a hazard that could result in injury to personnel or death.

CAUTION CAUTION denotes a hazard that could result in damage to the unit or other equipment.

REMINDER denotes important information about instrument functions, menus, and
measurements.

Instrument Safety Notices

WARNING

MAINTENANCE INSTRUCTIONS WITHIN THIS MANUAL ARE FOR USE BY QUALIFIED SERVICE

PERSONNEL ONLY. DO NOT ATTEMPT TO SERVICE THIS UNIT UNLESS YOU ARE QUALIFIED TO DO

SO.

SHOCK HAZARD

Disconnect all temperature probes and turn the unit off before removing the battery cover.
Never connect therm ocouple leads t o any sou rce whe re more than 42 Volts (pe ak) co uld exis t

between the lead and ground. If it is necessary to make measurements of an object at elevated

electrical potential, the user is responsible for obtaining and properly using a probe that provides
adequate insulation between the surface with elevated potential and the thermocouple wiring.

Always disconnect probe leads before opening the battery door or the instrument housing.
Internal circuits can present a shock hazard if leads are connected to a source of elevated potential.

Do not use this instrument if the housing, probe wiring, probe, or probe handle are damaged
or distorted. Housings and wire insulation are part of the personnel protection system, and if damaged

could expose users to elevated potentials.

EXPLOSIO N HAZ AR D

Never use or store this product with batteries installed, or change batteries, in an
environment where explosive or flammable vapors or dust suspensions may exist.

Do not attempt to recharge alkaline batteries.
Do not put batteries into bags designed to protect parts from electrostatic discharge (ESD).

These bags are specially designed with metal shielding which can short circuit a battery.
Do not expose batteries to extreme heat or fire. Observe all regional laws and regulations when

disposing batteries.

Never use this instrument or any temperature probe or sensor inside a microwave oven.

BURN HAZARD

Do not touch a temperature probe sheath that has been exposed to toxic substances or

extremely high or low temperatures.

Preparation for Use

2-3

Do not attempt to measure temperatures beyond the range of the temperatur e probe. Probe

damage or personal injury could result from exceeding a probe’s maximum temperature rating.

CAUTION

RISK OF INCORRECT READING

Do not use when AC or DC voltages in excess of 1V exist between thermocouple channels (on
instruments with more than one channel). Excessive voltage could result in an incorrect reading, or in

more extreme cases, a blown fuse that will result in incorrect readings and need for repair.

RISK OF INSTRUMENT DAMAGE

Only replace batteries with size AA (IEC LR6, ANSI 15). Observe proper polarity when installing
batteries. Do not mix old and new batteries.

Do not apply voltages across thermocouple leads in excess of normal thermocouple voltage for
the selected range. Excessive input voltage could result in blown fuse, component damage, or fire.

Application of excessive voltage is not covered by the warranty.
Avoid making sharp bends in probe or sensor lead wires. Bending lead wires at sharp angles can

damage the wire and cause probe failure.

When using both thermometer inputs and a voltage differential exists between the two
measurement points, at least one probe should be electrically insulated. If not, a ground-loop

current can flow through the thermocouple leads causing measurement error or instrument damage.
Static discharge through a connected temperature probe may cause instrument damage. Use care

to avoid static discharge when handling the instrument or connected probes.

Preparation for Use

2-4

Unpacking and Inspection

Each instrument is electrically and mechanically inspected before shipment. Upo n r eceiving
your new Omega digital thermome ter, unpack all items from the shipping container a nd
check for any obvious dama ge that may have occurr ed duri ng tr ansit. Use t he origi nal
packing materials if reshipment is necessary.

If any dents, brok en, or loose parts are se e n, d o not use the equi pme nt . N otify Omega
immediately.

Check that all items are pre sent. If any item s are miss ing, notify Omega immediately.
The following items are included with every new instrument:

• One (1) Thermocouple Thermometer;

• One (1) Quick Start Guide;

• Statement of Traceability;

• Three (3) AA, 1.5 V batteries; and

• Optional accessories (if purchased).

Battery Installation and Replacement

Three (3) AA 1.5 V batteries are s up p l i e d with the instrument, but not installed. Read the
following battery replacement instructions before attempting to install or remove the
batteries.

CAUTION

Always turn the instrument off and disconnect any input connections before replacing
the batteries. R e -install the battery compartment cover before resuming use of the

instrument.

CAUTION

The battery compartment is sealed with a rubber gasket. Use care to not damage the
gasket when removing or installing the battery compartment cover.

CAUTION

Remove the batteries when storing the instrument for an extended period of time or
in a high temperature environment to prevent battery leakage and possible damage
to the instrument.

All measurement parameters may be reset to factory default if batteries are removed while
the instrument is powered on. Always turn the instrument off before changing batteries.

To install or replace batteries:
Required Tools: P hi l li ps Head Screwdriver

1. Identify the ba t tery compartment l o cated on the bac k o f t he instrument (see

Figure

1 below);

2. Remove the two (2) batte ry compa rtmen t retai nin g screw s;

3. Remove the battery compartment cover;

4. If present, careful ly remove old batte ri es be ing careful to not d am age the battery
contacts;

5. Observing proper polarity, install three (3) new, AA alkaline (IEC LR6, ANSI 15)
batteries;

6. Re-install the battery cover and two (2) retaining screws;

Preparation for Use

2-5

7. At initial power on after battery replacement, allow approximately 30 second s for
instrument to stabilize.

Figure 1: Battery Installation

Making Your First Temperature Measurement

Omega’s 900 Serie s Digit al H andhel d Therm omete rs are designe d for easy operation, while
still providing a featur e-rich experience via the intuitive user i n te rfa ce.

To get started making tempera tur e m e as u rem e nts right away, f ollow these step s :

1. Perform Section 2.5, Battery Install ati on and Rep lace men t;

2. Connect a compati b l e temperature pr obe to the Channe l 1 and/or Channe l 2 i nput
connector located at the to p of th e ins trum ent ;

To ensure best measurement accuracy, allow several minutes for the
thermocouple probe and connector to thermally stabil i z e after
connection to the instrument.

3. The instrument will immediately display a temperature measurement for the
connected channel s. H ow e ve r, to en su re valid and best accuracy measurements,
continue to Step 4 below;

4. Set the desired measurement parameters as follows:

a. Enter the Setup Menu by p r ess ing , hold the ke y d own for

approximately 1.5 seconds, and th en rele ase it;

b. The active thermocouple type is flashing on the display. Use to

select the thermo co upl e type of the conne c ted te mper atur e pr obe (E, J,
K, or T);

c. Momentarily (do not hold) press to save your se lecti on a nd move to

the next parameter;

Retaining Screws

Battery

Compartment

Gasket

Preparation for Use

2-6

d. The active tempe ratu re unit is flashing on the display. Use to

select the desired temperature uni t ( °C, °F, or K);

e. Momentarily press to save your selec tion and move to the nex t

parameter;

f. Channel 1 probe offset value is fl a shing on the display. If the

temperature prob e’s offset value is known, press to set the
Channel 1 probe offse t t o the pr ob e’s offse t val ue. See Section 3.10,
Probe Offset, for more information.

g. Momentarily press to save your se l ection and move to Channel 2

probe offset (if equipped);

h. If desired, repeat Step (f) above for Channel 2;

i. Momentarily press to save you r se l ection and exit the setup

menu.

Congratulation s! Y ou’re now re ady t o make accurate and reli abl e temperature
measurements, wherever and whene ve r you m ay nee d to.

We know you are eager to begin using your new thermometer, bu t this overview is just the
beginning. Please take a moment to familiarize yourself with this Operation Manual to l ea rn
about all the featu res and bene fi ts of you r new Omega Thermocouple Thermometer.

Operating Instructions

3-1

3. OPERATING INSTRUCTIONS

Keypad Functions

The instrument keypad is an eight (8) key, sealed membrane keypad. Each key provides
audible and tacti l e us e r f eedback when pressed. K ey functions are desc ri bed in Figure 2
below.

The , , , and keys have multiple f un ctions which can be a cce ssed by
momentarily pressing the key, or alternatively, by pressing and holdi ng t he key for
approximately 1.5 se conds. Th roughou t thi s Operation Manual, t he press and hold sequence

is indicated by the key designator followed by the subscript (1.5s). For i ns t ance ,

(1.5s)

indicates that the key should be pressed and held for 1.5 seconds , then releas ed to
access the desired functi on.

Power instrument ON or OFF

(1.5s)

Disable auto-power OFF while instrument
is on

(1.5s)

Enter instrument Setup Menu
While in Setup Menu, save current value

and step to next parameter

Toggle display backlight

(1.5s)

Disable backlight 30-second timeout

Hold currently displayed measurement

(1.5s)

Reset all statistics currently stored in
memory

While in Setup Menu, discard all unsaved changes and exit menu

Cycle through view modes and statistics

While in Setup Menu, save changes and exit menu

While in Setup Menu, advance or reverse selected setting

While viewing saved data, advance o r reverse displayed measuremen t
While in Calibration mode and when pressed simu lt aneously for 1.5

seconds, resets active calibration factor to d efault.

Figure 2: Keypad Button Functional Description

LCD Display

The display is a large, easy to r e ad, dual LCD display , with an LED backlight for clear
viewing in low-light conditions. It simul taneo usl y dis plays tempera ture measu reme nts for
Channel 1 and Channel 2, cu rre nt th erm ocoupl e type and temp era ture uni t, tr end i ndic ato rs
for both Channel 1 and Chan nel 2, and a battery voltage indicator.

Operating Instructions

3-2

In Statistics View, the dis pl a y sub s titutes the Channel 2 temperature measurement with the
active statistic result and displays an active sta tisti c m ode in di cato r and the ela pse d time of
the current statistic sessi on. See Figure 3 below for f ur th e r de scription of each di splay
indicator.

1 HOLD function is active

2

T1 and/or T2 OFFSET is
active1

3

Channel 1 temperature
measurement

4

The active thermocouple
type

5 Rema ining battery life

6 Active temperature unit

7

Channel 2 temperature

measurement2 ,T1-T2
measurement result

2

, or

active statistic result

8 Active statistic

9 Open Wire Detection Off

10 Setup Menu active

11 When viewing statistics, time elapsed since start of statistics collection

12 Channel 2 trend indicators2

13 Channel 2 minus indicator

14 Channel 2 indicator2

15 T1-T2 temperature measurement indicator2

16 Channel 1 trend indicators

17 Channel 1 minus indicator

18 Channel 1 indicator

1

T2 Probe Offset available on model HH912T only.

2

Models HH912T only.

Operating Instructions

3-3

Figure 3: LCD Display Description

The LCD can di splay error info rmation about the current measurem en t, as shown in Figure

4.

D

ISPLAY DESCRIPTION

OPEn No thermocouple probe is connected or making connection

-Or-

Over range: The applied temperature is greater than the maximum

temperature for the selected t hermoc oupl e ty pe

-Ur-

Under range: The appl ie d tempe ra ture is less tha n the mini mum
temperature for the s e l ec ted thermocouple type

Figure 4: LCD Error Indications

Setup Menu

Key designators followed by (1.5s), e.g.

(1.5s)

, indicate that the key should be

pressed and held for 1.5 seconds, then released to access the desired func ti on .

Measurement settings are configu re d i n the Setup Menu. Press

(1.5s)

to access the Setup
Menu. The SET annunciator will appear at the bottom of the di splay and the c urrently
selected thermocouple type will begin to flash.

From within th e Setup Menu, press to step through the user -definable parameters and
the keys to advance or reverse the s elec ted value fo r the active par ameter. The active

parameter value will flash on the display.

Press to save a setting and step to the next parameter. Press to save a setting and
exit the Setup Menu. Press to disr eg a rd unsaved change s a nd exit the Setup Menu. If no

key is pressed for te n ( 10) se conds, the current co n fi gu ra ti o n i s saved a nd the instrumen t
will exit the Setup Menu.

Figure 5 below lists the user-definable parameters an d the available values for each
parameter.

To set a parameter value:

1. Press

(1.5s)

to enter the Setup Menu;

2. Press to cycle throug h p arameters as show n in Figure

5 until the desired

parameter is reac hed ;

3. To change the value of the current parameter, press ;

Operating Instructions

3-4

4. To save the current
parameter value and cycle
to the next p ar ameter,
press

(1.5s)

;

5. To save the current
parameter value and exit

the Setup Menu, press ;

6. To disregard change s
made to the current
parameter value and exit

the Setup Menu, press .

If no key is pressed for ten (10) seconds, the instrument will save the current
configuration and exit the Setup Menu.

View Modes and Statistics

The instrument features multiple view modes including a variety of real-time statistics, all
available at the touch of a button. Figure 6 below describes each view mode.

Press to change view modes. For each mode, the active measurement or statistic result
is displayed on th e se c on d line of the display.

The T1-T2 view mode displ a ys th e current Channel 1 measurement minus the c urrent
Channel 2 measureme nt. The display indicates T1-T2 at the left side of the display. If either

PARAMETER AVAILABLE VALUES

Thermocouple Type E, J, K, T
Temperature Unit s °C, °F, K
T1 Probe Offset ±0.1 ° increments
T2 Probe Offset1 ±0.1 ° increments
Open Wire Detection ON, OFF

Resolution and
Rounding func ti on s

rndG, Auto, CE I L, nOrL,
trnC

trnd ON, OFF

1

T2 Probe Offset available on model HH912T only.

Figure 5: Setup Menu Parameters and Values

VIEW MODE

D

ISPLAY

INDICATOR

DESCRIPTION

T1–T2 T1-T2

Current Channel 1 measurement – current
Channel 2 measurement

Minimum MIN

Minimum temperature recorded during
current session

Maximum MAX

Maximum temperature recorded during
current session

Average AVG

Average of all temperatures recorded during
current session

Range RNG Maximum - Minimum

Standard
Deviation

STDEV

Standard deviation of all temperatures
recorded during the current session1.

1

Standard Deviation is calculated using the population formula:

 =

�

∑

(−µ)

2



Figure 6: View Modes and Statistics

Operating Instructions

3-5

channel is no t con nected to a prob e , or the current me a su rem e nt on either ch an nel is over­or under-range, T1-T2 view mode is not available.

When viewing s ta tistics, the a cti v e statistic is i nd i c a te d di r e ctly below the result. The
elapsed time of th e current statistics s ession is displayed i n the lower-left corner of the
display.

Statistics are c alcul ate d conti nuou sl y, be gin ning when the in st rument is powered on or w hen

(1.5s)

is pressed. T o p au se statistics collection temporarily, pre ss . T o resume statistics

collection, press again.
It is importa n t to note that changing parameter values or temperature probes will invalidate

the current statistics session. When u si ng statistics, alw ay s begi n by pressing

(1.5s)

to

delete existi ng s t a ti s ti c s d a t a and initiate a new s t atistics session.

Press to step through the av ail able stati sti cs. Stati sti cs a re displ ayed i n the order shown
in Figure 7 below. For dual-ch ann el models, the LC D T1 or T2 indicators a re lit to identify the
channel’s statistics currently being displayed.

When using statistics, always begin by pressing

(1.5s)

to clear existing statistics

results and initiate a new statistics session.

The first line of the display indicates the current Channel 1 temperature, regardless of
which view mode or channel’s statistic is currently displayed.

M

ODEL

C

HANNEL

S

TATISTIC VIEW SEQUENCE

HH911T T1 MIN MAX AVG RNG STDEV

HH912T

T1 MIN MAX AVG RNG STDEV

T2 MIN MAX AVG RNG STDEV

Figure 7: Statistics Sequence

If the instrument records invalid measurement data during the statistics session such as an
over-range, un de r-range, or open inpu t value,
———— will be displayed for each affected statistic result.

To return to the a ctive measureme nt m od e, press repe atedl y to step through the
remaining view modes, or cycle power.

Auto-Power Off

Key designators followed by (1.5s), e.g.

(1.5s)

, indicate that the key should be

pressed and held for 1.5 seconds, then released to access the desired func ti on .

Operating Instructions

3-6

To conserve battery life, the instrument automatically turns off if no key is pressed for 20
minutes. To disable this feature, press

(1.5s)

. The rem ai ni n g battery life indicator will flash

once, indicating auto-power of f is disabled.
Auto-power off will remain disabled until instrument power is cy cle d. At nex t p ow e r on,

auto-power off return s to the de faul t en abled condi ti on.

Backlight and Backlight Timeout

The instrument includes an LED backlight feature to ensure measurement data can be easily
read in low-l ight conditions. To activate t he backlight, p re s s .

Once the backlight is activated, it will automatically turn off after 30 seconds if no key is
pressed to preserve battery life. To disable the backlight timeout feature, press

(1.5s)

. The

backlight will flash to indicate the timeout feature has been disabled. To re-enable t he
backlight timeout feature, turn the backlight off then on by pressing twice.

Hold Function

Press t o hold the cur ren t reading and/or statistics result, and to pause statistics
accumulation. HOLD is displayed at the top-left of the LCD display. New m ea su rements are
not displayed, t re nd i ndi cators are not ref re shed, and statisti cs a re not calculated while the
hold function i s a ctive.

To disable the hold function a nd resume normal o p er a ti on and statisti c s data accumulati o n,
press again.

Trend Indicators

Trend indicators p ro vi de a vi s ual representation of th e mea sure ment ’s s tabi li ty, and
separate indicato rs are pro vide d f or eac h cha nnel. An up arrow indi ca tes th at th e cur rent
measurement is trending upwards, whi l e a down arrow indicate s th e measurement is
trending downwards. Neither arrow is visible when the me a su rement is stable. For best
accuracy, always allow the mea sureme n t to stabi li ze before eval uati ng or re cor ding the
measured temperature. This feature can be turned on and of f in th e Setup menu. See
section 3. 3 ab ov e.

Battery Indicator

Battery depleti on or battery re pl a ce m ent will reset all m e asu re me nt p a ram eters to
their default v al u e s and deletes all exi sting statistics data. After battery replaceme nt,
set measurement parameters as required.

BARS APPROX. BATTERY LIFE

3 100% - 50%

2 50% - 20%

1 20% - 5%

0 0% - Shutdow n I nitiated

Operating Instructions

3-7

The battery voltage indicato r provides a visual
representation of ap proxi ma te rem aini ng
battery life. It i s loc ated at the to p-right of the
display.

The battery voltage indicato r u ses three bars t o represent remaining battery life. Figure 8
shows the appr oximate battery life for each bar.

At zero (0) bars, the instrument will momentarily display bATT and initiate a shutdown
sequence. To preve nt di s ruption of the meas urement process and s t ati sti c s collection, the
batteries should b e replaced before th e ba t ter y v ol t ag e i n di cator reaches zero (0) bars. See
Section 2.5, B atte ry In sta lla tion and Re plac ement .

Probe Offset

The probe offset f ea tu re compensates for tem pera t ure pro be errors, signific an tl y improving
overall measurem e nt uncertainty. Pro be o ff set can be set for Channel 1 and 2 individually.
Once set, the probe offse t is au toma tic all y appl ie d to all subse quent meas urem ents and
statistics on the offset c ha nn el .

Current statistics will be invalidated after changing settings such as probe offset. Press

(1.5s)

to delete existing statisti cs data a nd in i tia te a new sta ti s tic s session.

Probe offset rounding errors may occur if temperature units are changed while a

probe offset is active. When usi ng a prob e off set, verify and if necessar y cor rec t th e

programmed probe offset after changing temperature units.

To set the probe o f fset when using an un-calibrated tempera t ure probe:

1. Connect the temp e r at ure probe to Chann e l 1 or C h a nnel 2 (as desire d) of the
instrument;

2. Place the probe i n t o a k no wn te mperature reference su ch as a thermowell or ice
bath

3

;

3. Allow the temp erature probe to stabilize in t he ice bath or thermowell by obs er vi ng
the instrument trend indicators for the
appropriate channel;

4. Press

(1.5s)

to enter the Setup Menu;

5. Press three (3) times to cycle to the
Channel 1 Offset par ameter;

6. Observe the current Channel 1 tempe ratur e measu reme nt di splaye d on the top
measurement line of the display, and current offset value displayed on t he second
line of the display;

7. Press to set the offset in 0.1 ° increments until the displayed temperature
equals the known temperature reference value;

8. Press to save the offset value and proceed to Channel 2 offset (HH912T only),
or press to s a ve the offset val ue a nd exit the Setup Me n u.

3

Probe offset measurement using an ice bath or thermowell should only be performed by

personnel trained and qualified in the use of such inst ruments and related metrology methods.

Figure 8: Battery Voltage Indicator

Neither trend indicator is

displayed when th e
temperature measurement

has stabilized.

Operating Instructions

3-8

a

. Altern ati vel y, t o di s re g a rd the new offset v al ue and exit the Setup Menu,

press .

9. OFFSET is displayed at the top-left of the LCD display.

To set the probe offset when using a cali bra ted tem per ature probe with a kn own of fset :

1. Press

(1.5s)

to enter the Setup Menu;

2. Press three (3) times to cycle to the Channel 1 Offset parameter;

3. Observe the current offset value di s pl a yed on t he second line of the di splay;

4. Press to set the offset in 0.1 ° increments until the displayed offset value
equals the calibrated probe offset value;

5. Press to save the offset value and proceed to Channel 2 offset (HH912T only),
or press to s a ve the offset value and exit the Setup Menu.

a. Alternatively, to disre g a rd the new offset v al ue and exit the Setup Menu,

press .

6. OFFSET is displayed at the top-left of the LCD display.

Open Wire Detection On/Off

Open Wire Detection allows the unit to detect i f a t he rm o co upl e pro be is connected to the
thermometer. This feature is not c ompati bl e wit h some thermocouple calibrators and can
result in measurement instability.

Turning Off Open Wire Detecti on in these situa ti on s can significa ntly improve reading
stability. Once off, Open Wire Detection will remain off until changed by followin g the bel ow
steps, or the instrument is p ow e r e d o ff .

If no thermocouple probe is connec ted and Open Wire Detection is dis abl ed, the unit
will not indicate OPEn and may display erratic readings.

To change the Open Wire Dete cti o n setting:

1. Press

(1.5s)

to enter the Setup Menu;

2. Press four (4) times for HH911T, five (5) tim es for HH912T, to cycle t o t he
Open Wire Detection Off/On parameter;

3. “OWD OFF” is flashing near the bottom of the LCD display, and the current Ope

n

W

ire Detecti on st a t us is displayed on Line 2.

4. Press to change the Open Wire Detection setting as shown on Line 2 of the
display;

a. ON indicates that Open Wire Detection is enabled;
b. OFF indic ate s tha t Open Wire Detection is disabled;

5. Press or to save the Open Wire Detecti o n setting and exit the Setu p Menu.

Operating Instructions

3-9

a. Altern atively, to disregard the Open Wire Detection set ti ng a nd exit the

Setup Menu, press .

6. While Open Wire Dete cti on is off, the “OWD OFF” annunciator will be shown during
active measurem e nt mode.

Clear Function

From active me as urement or hold mode, press

(1.5s)

to clear the statisti cs regi ste rs and
begin a new statistics session. The LCD display will indicate CLr to confirm the action a nd
return to acti v e m e as urement mode.

Pressing

(1.5s)

deletes all measurement data curren tly saved in the instrument’s

internal memory. To preve nt da ta loss, connect to the The rmome ter Link mobil e ap p

and TEGAM Cloud to uplo ad s aved data b efore performing this action.

From the Setup M enu, press to disregar d cha nges to the curre nt p arame te r value and
exit the Setup Menu.

Invalid Measurement Indications

The LCD display indicates when a measurement or statistic is invalid, as shown in Figure 9
below.

I

NDICATION DESCRIPTION

- Or -

The current measurement or statistic is over-range for the selected
thermocouple type

- Ur -

The current measurement or statistic is under-range for the
selected thermocouple type

OPEn No probe is connected, or the prob e sens or is faul ty

———— C annot compute a valid s tati sti cal resul t

Figure 9: Invalid Mea surement Indications

Resolution and Rounding Functions (Serial Number 2148 and later)

This feature allows the use r to sel ect betwee n four roundi ng meth ods or mode s. These
modes are Automatic (A u tO), No rmal (nOr L), Cei li ng (CEIL ) and T runc ate ( trnC ). In t hese
modes the rounding metho ds are diffe re nt, but th e res olu tion, (ex cep t Au tO), a re all se t at a
1° increment and c a nn ot b e changed.

Two functions, ceiling (CEIL) and truncate (trnC) have special algorithms designed to assure
that the target temperatu re is full y achi eve d dependi ng up on the di recti on you are
approaching the ta rge t temperature.

The nOrl function provides standard rounding, round down <0.5° and round up ≥ 0.5°
The CEIL functi on provides 1° resolution and is used when approaching the target

temperature moving tow ar ds zero in either direction, up or down.

Operating Instructions

3-10

The Trunc function provide s 1° re solu tio n and is used when ap proa ching th e tar get
temperature moving away from ze r o i n e i t he r di rection, up or down.

See detailed descrip tions bel ow.
rndG

1. AutO: 0.1° Resoluti on f or re adi ngs <1000° and 1°>999.9°. AutO is the default
setting.

2. CEIL: 1° Resolutio n w ith ceiling roundi ng is used for a decreasing positive
temperature to as su re t he lower temperature is fully reached or an i n cre a si ng negative
temperature to as su re a hi g he r t emperature is fully re ache d.

For Example: A decreasing (cooling) temperature 20.4° actual temperature will display 21°
until 20.0° i s reached. An inc reasing (thawing) temperature -20.6° will display -21° until -

20.0° is reached.

3. nOrL: 1° Resol uti o n w ith normal rounding, 20.4° displays 20°, 20.5° displays 21°

4. trnC: 1° Resolutio n wi th tr unc ate rou ndi ng is used to ass ure th at an incre asi ng
positive temperature i s fully reach ed or a decreasi ng neg ative tempe rature to as sure th e
lower temperatur e i s fully reached.

For Example: An increasing temperature (heating) 20.6° will display 20° until 21.0° is
reached.

A decreasing temperature (cooling) -20.6° will display -20° until -21.0° is reached.

This is for data on the instrument display only. Data transferred via the TEGAM
Thermometer li nk t o the TEGAM Cloud o r via Bluetooth f rom the instrument will not have
any rounding appli ed.

Service Information

4-11

4. SERVICE INFORMATION

Inspection and Cleaning

To extend the life of the instrument, inspe ct and clean the instrument regularly. Inspect the
instrument for any si g ni fi c a nt abr a si on s, cuts, cracks, dents, o r other signs of dam age on
the case, keypad, an d di splay lens. Inspect t he connectors for breaks, dirt, or co rr osion.
Ensure all screws are securel y faste ned, and if equi pped , that the tilt stand/magnet/hanger
is in good condi ti o n a nd l oc ks i n to position properly.

With all screws securely fastened and the battery compartment cov er i n place, use a damp
cloth or towel to wi pe down the instr ume n t. Use care to a voi d scratching the display lens.
Mild, non-abrasive de te r ge n ts m ay be used providing the instrume nt is then wiped down
with a clean damp cloth or towel.

Calibration

4.2.1 Verification Procedure

1. This procedure shal l be performed within environmental cond itions of 23 ±1 °C
and 5% to 95% RH.

2. The unit under test (“UUT”) shall be acclimated to the controlled environment for a
minimum of four (4) hour s.

3. The equipment l is ted in Appendix A is required to fully verify the UUT to the
expanded instrument uncertainties specified in Appendix B.

4. Refer to Appendix C for standard measur emen t poi nts and tole rance s for each
thermocouple type.

5. One, several, or all the available thermocouple types may be verified as
necessary. In the steps below, use the appropriate Thermocouple Cabl e and
Thermocouple Calib r at or s e t ti ngs as app ro priate for the desir ed th e rm oc oupl e
type.

6. For two channel UU Ts, both channels ma y be veri fied concurrently.

7. Set the UUT parameter s as shown in Figure 10 below. Refer to Section 3.3, Setup
Menu as necessary for UUT parameter setup instructions.

PARAMETER

VALUE

Thermocouple Type

As Desired

Temperature Unit s

°C

Offset Ch. 1

0.0 °C

Offset Ch. 2 (HH912T only)

0.0 °C

Open Wire Detection On/Off

As Needed (see Section 3.11, Open
Wire Detection On/Off)

Figure 10: UUT Verification Parameter Settings

8. Connect the miniat ure therm ocou ple conne ctor of th e Th erm ocoupl e Cable to
Channel 1 of the UUT.

a. For tw o ch an ne l UUTs using the S plit Thermocouple Cable, connect t he

miniature therm o co uple connector o f on e l e g to the UUT Channel 1
input, and the miniature thermocouple connector of the o th er leg to the
Channel 2 inpu t.

Service Information

4-12

9. Connect the opposite end of the Thermocouple Cable (or the single-connector end
of the Split Thermocouple Cable) to the Thermocouple Calibrator thermocouple
output.

10. Set the Thermocouple Calibrator t he rmo couple type to the desired thermocouple
type.

11. Allow at least five minutes for this connection to stabilize.

12. Set the calibrator to o u tput to the first Standard Value i n Appendix C for the
desired thermocouple type.

13. Record the UUT measurement in the Reading column of Appendix C for the
appropriate Standa rd Value.

14. Record the cable correction v alue f or the The rmoco upl e cabl e in the Cable
Correction column of Appendix C.

15. Subtract the Cable Corre c ti o n v al u e fr om the Reading and record the re s ul t a s the
Corrected Reading (

Reading – Cable Correction = Corrected Reading) in

Appendix C.

16. Compare the Corrected Re ading to the tol e r an ce s s tated in the 2-Sigma Tolerance
column of Appendix C to determi ne whether the UUT measurement i s w i t hi n
published specific a ti on s.

17. Repeat Steps 12 through 16 for each remaining Standard Value in Appendix C for
the current thermocouple type.

18. Repeat Steps 7 through 17 for each de si red thermocouple type .

19. If Open Wire Detection w a s off in Step 7 abo ve, e n a bl e the feature as shown in
Section 3.11, Open Wire Detec tion On/O ff.

4.2.2 Alignment Procedure

Preparation

1. This procedure shall be performed within environmental conditions of 23 ±1 °C
and 5% to 95% RH.

2. The unit under test (“UUT”) shall be acclimated to the controlled environment for a
minimum of four (4) hour s.

3. The equipment l is ted in Appendix A is required to align the UUT to the expanded
instrument uncertainties specified in Appendix B.

4. Remove the UUT b at te r y d oo r housing to exp ose the alignment access hol e.

5. Press UUT , to turn the UUT on.

6. Set the UUT parameters as shown i n Figure 11 below. Re fer to Section 3.3, Setup
Menu as necessary for UUT parameter setup instructions.

PARAMETER

VALUE

Thermocouple Type

Type E1

Temperature Unit s

°C

Service Information

4-13

Offset Ch. 1

0.0 °C

Offset Ch. 2 (HH912T only)

0.0 °C

1

Other thermocouple types may be used in this procedure as desired. For instance, if the

UUT is used primarily with Type J applications, Cold Junction Compensation may be
aligned using Type J. Note however that the expanded instrument uncertainties provided

in Appendix B assume alignment using Type E.

Figure 11: UUT Alignment Parameter Se ttings

7. Insert the Str ai g h te ne d Paper Clip through
the alignment acces s hol e and gently press
the calibration enable switch located on the
circuit board. See Figure 12 for l o cation.

Voltage Gain and Off set Alignment

8. The UUT display will indicate as follows:

a. Line 1: C A L 1
b. Line 2: mV portion of Channel 1

voltage reading

c. Line 3: nV portion of Channel 1 vol t age reading

9. Connect the miniature thermocouple connector of th e Copper Mini-TC Cabl e to th e
Channel 1 input of the UUT.

a. For tw o ch an ne l UUTs using the S plit Copper Mini -TC Cable, connect o ne

miniature thermo coupl e connector to the Ch annel 1 inp ut of the UU T,
and the other connector to the Channel 2 input.

10. Connect the opposite e nd of the Copper Mini-TC Cable ( or S pl i t Copper Mini-TC
Cable) to the appropriate output connectors o f the DC Voltage Source.

11. Allow at least three minutes fo r the co nne cti ons to temp er ature stabi li ze be fore
proceeding.

CAUTION

Do not apply voltages greater than 80 mV DC to the UUT inputs. Voltages
greater than 80 mV may damage the instrument.

12. Set the DC Voltage Source to output the first Applied Voltage value in Figure 13
below.

13. Allow the DC Voltage source output to stabili ze be f o re pr oceeding.

14. The UUT will display the cu rre nt v oltage reading.

15. Allow the UUT displayed volta ge t o stabilize before p ro ce edi n g.

16. Press UUT to aut oma tical l y adj ust the UUT vol tage re adi ng to the Appli ed
Voltage, ±0.001 mV.

a. If the UUT displayed voltage is not within ±0.001 mV of the Applied

Voltage, press until the UUT displayed voltage is within ±0.001
mV, adjusting as close to t he Appl ied Voltage as possi bl e .

b. If the UUT displayed voltage is too far from nominal, may not

function as e xpec ted. The UUT will typically i n dicate 8999 or -999 i n t his

Figure 12: Alignment Access
Hole Location

Service Information

4-14

state. To set the active CAL factor to its default value, press the

(1.5s)

arrow buttons simul ta neou sly for 1.5 seconds. Fine

adjustments may still be neces sar y.

17. Press UUT . The display will change to rES1 [2, 3 …] showing the actual
measured value saved in the previous step.

18. Press UUT again. This will increment to the next CAL value.

19. Repeat Steps 12 through 18 for e ach remainin g v alue in Figure 13 below. Fo r
single channel UU Ts, omit Channel 2 val ues.

a. For tw o ch an ne l UUTs using the si n g l e-ended Copper Mini -TC Cable,

disconnect the cab le from the UU T Chan nel 1 input , and reconnect the
cable to the C h an nel 2 input afte r completing CAL4 in Figure 13 below.
Repeat Step 11.

CHANNEL

UUT DISPLAY

APPLIED VOLTAGE (mV)

1

CAL1

-10

CAL2

(75

CAL3

-10

CAL4

(30

2

CAL5

-10

CAL6

(75

CAL7

-10

CAL8

(30

Figure 13: Gain Alignment V a lues

20. Remove the copper cable from the DC Voltage Source and U UT.

Cold Junction Compensation Alignment

21. Connect one end of the T yp e E

4

Thermocouple Cable to t he UUT Channel 1 i n put.

a. For two ch annel UUTs using the Spl i t Thermocouple C abl e, connect the

miniature thermocouple connector of one leg to the UUT Channel 1
input, and the miniature thermo coupl e connector of the other leg to the
Channel 2 inpu t.

22. Connect the opposite end of the Thermocouple Cable (or the single-connector end
of the Split Thermocouple Cable ) to t he Therm ocoupl e C alibr ator thermo couple
output.

The UUT display will indicate as follows:

a. Line 1: C A LA

4

If substituting another thermocouple type, use the appropriate Thermocouple Cable for the

selected thermocouple type.

Service Information

4-15

b. Line 2: t e mperature in °C
c. Line 3: temperature in tenths of °C (out to 1 μ or 0.000001 °C)

23. Set the Thermocouple Calibrator thermocouple type to Type E5.

24. Set the calibrator to output 0.0 °C.

25. Allow at least five minutes for this connection to stabilize.

26. Press UUT to set the UUT displ ay e qu al to the Thermocoupl e Cable
calibrated correction value ± 0.02 °C.

27. Press UUT .

28. The display will change to rESA showing t he actual measured value saved in the
previous steps.

29. For single channel UUTs, skip to Step 35 below.

30. For two channel UUTs, continue w i t h Step 31.

a. For tw o ch an ne l UUTs using the si n g l e-ended Thermocouple Cable,

disconnect the cab le from the UUT Channel 1 input, and reconnect the
cable to the Channel 2 inpu t. Repeat Step 25.

31. Press UUT .

32. The UUT display will indicate as follows:

a. Line 1: C A Lb
b. Line 2: t e mperature in °C
c. Line 3: temperature in tenths of °C (out to 1 μ or 0.000001 °C)

33. Repeat Steps 26 and 27.

34. The display will change to rESb showing the actual measured value saved in the
previous steps.

35. Press UUT to s av e the current al i gnment values an d re turn the UUT to normal
operation.

Troubleshooting

Omega’s digital handhel d thermo meters are desi gne d and bui lt to provide year s of
uninterrupted use. In the event the instrument malfunctions o r does not perform as
expected, helpf ul tr ou bles ho otin g tip s are pro vided bel ow. Figure 14 below list s some of the
more common issue s and their resolutions.

5

If substituting another thermocouple type, set the Thermocouple Calibrator as appropriate for

the selected thermocouple type.

Service Information

4-16

S

YMPTOM DESCRIPTION RESOLUTION

Unexpected
reading on Line 2
of Display

Statistics View Mo de is
active

Press t o cycle through s ta ti s tics
views until a ctive measurement is
displayed (see Section 3.4

View

Modes and Statistic s)

Unexpected or
Erroneous
Measurement

Probe offset is active

Set probe offset to correct value for

connected temperature probe (see

Section 3.10, Probe Offset)

Temperature probe has
not stabilized

Observe display trend indicators a n d

wait for stable measurement (see

Section 3.8 Trend Indicators)

Instrument is set to the

wrong thermocouple type

for the attached pro be

Set the thermocoupl e type a s

appropriate for the atta ched pr obe

(see Section 3.3, Setup Men u)

When sourcing from a

thermocouple simul a to r,
Open Wire Detec tion is

enabled.

See Section 3.11, Open Wire

Detection On/Off to disable.

Unresponsive

Hold Mode is active

Press , and verify that the HOLD
indicator is not active (see Section

3.7, Hold Function)

Static discharge t h ro ugh
connected probes

Press ,

to cycle in st rum en t

power

Shuts down

unexpectedly or

will not power on

Batteries are low or
depleted

Replace batteries (see Section 2.5,

Battery Installation and

Replacement)

Service Information

4-17

Figure 14: Common Troubleshooting Issues

Diagnostic Routines and Error Codes

The instrument momentarily activates all display annunciators and segments during s tart up
to allow for visual inspection of the LCD. Observe t he LCD and verify al l segments acti v a te .

Internal diag no stic routines are also executed during startup. I f an y diagnostic routi ne
detects a malfunction, an error will be displayed as shown in Figure 15 below.

E

RROR CODE DESCRIPTION

Err ADC Analog to digital c on ver ter error

Err CJC Cold junction com p ensation error

Err FLSH Flash memory error

Err InP Stuck key or other keypad err or

Figure 15: Diagnostic Routine Error Codes

Memory Sterilization

To erase all locally stored measurement data and reset accumulated statistics, press

(1.5s)

.

See section 3.12Clear Function for instructions.
Instrument parameters will be retained. Refer to Section 3.3, Setup Menu to set instrument

parameters as desired.

Appendices

A-i

A. REQUIRED EQUIPMENT

EQUIPMENT FUNCTION RANGE

S

PECIFICATION

(2-SIGMA)

DC Voltage Source

DC Voltage Output

-10 to 75 mV

± (30 ppm of output + 2 µV)

Thermocouple
Calibrator

1, 2

Thermocouple
Type E

-250 to -201 °C

-200 to -101 °C

-100 to -1 °C
0 to 599 °C

600 to 1000 °C

± 0.26 °C

± 0.13 °C
± 0.11 °C
± 0.10 °C

± 0.12 °C

Thermocouple
Type J

-210 to -101 °C

-100 to 799 °C

800 to 1200 °C

± 0.15 °C

± 0.11 °C

± 0.12 °C

Thermocouple
Type K

-200 to -101 °C

-100 to 799 °C

800 to 1372 °C

± 0.17 °C

± 0.12 °C

± 0.14 °C

Thermocouple
Type T

-250 to -201 °C

-200 to -101 °C

-100 to -1 °C

0 to 400 °C

± 0.36 °C

± 0.17 °C
± 0.12 °C

± 0.11 °C

Thermocouple
Cables

Thermocouple Cables must be calibrated to a 2-Sigma uncertainty of 1 µV or less.

Calibrated Thermocouple Cables with recorded correction values shall be used
throughout this procedure to adhere to the expanded instrument uncertainties
provided in Appendix B.

Thermocouple Cables are only required for each desired thermocouple type.
The thermocouple cables must be terminated at one end with a male miniature

thermocouple connector for connection to the UUT. The opposite end should be
terminated as appropriate for the thermocouple calibrator.

For two channel UUTs, a split or “Y” cable may be used, terminated with two (2)
male miniature thermocouple connectors. Correction values must be established
for each leg of the Split Thermocouple Cable.

Copper Mini-TC
Cable

Copper Mini-TC Cable is required for Voltage Gain and Offset alignment only. This

cable does not require calibration.
One end shall be terminated with a male miniature thermocouple connector for

connection to the UUT. The opposite end shall be terminated with copper
connections appropriate for the DC Voltage Source.

For two channel UUTs, a split or “Y” cable may be used, terminated with two (2)
male miniature thermocouple copper connectors.

Straightened Paper
Clip

Required to access the calibration enable switch. Any rigid wire, approximately

0.8 mm in diameter, may be used.

1

Fluke 7526A meets the Thermocouple Calibrator specifications of Appendix A.

2

All “Specification (2-Sigma)” column values rounded up to nearest hundredth.

Appendix A: Required Equipment

B-i

B. EXPANDED INSTRUMENT UNCERTAINTIES

Thermocouple Type E

B-ii

Thermocouple Type J

B-iii

Thermocouple Type K

B-iv

Thermocouple Type T

C-i

C. INSTRUMENT VERIFICATION DATA SHEET

T

HERMO

-COUPLE

TYPE

S

TANDARD

VALUE

(°C)

R

EADING (°C)

C

ABLE OFFSET

(°C)

C

ORRECTED

R

EADING (°C)

2-S

IGMA

T

OLERANCE

(± °C)

E

-250

1.30

-95

0.29

0

0.23

995

0.28

J

-210

0.59

-95

0.27

0

0.23

995

0.28

1200

0.66

K

-200

0.59

-95

0.29

0

0.26

995

0.32

1372

0.72 T -250

1.36

-95

0.31

0

0.24

400

0.23

Appendix C: Instrument Verification Worksheet

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 37 months from date of purchase. OMEGA’s WARRANTY adds
an additional three (3) month 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 unit is found to be defective, it
will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects
resulting from any action of the purchaser, including but not limited to mishandling, improper
interfacing, operation outside of design limits, improper repair, or unauthorized modification.
This WARRANTY is VOID if the unit 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, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes
liability for any damages that result from the use of its products in accordance
with information provided by OMEGA, either verbal or written. OMEGA warrants
only that the parts manufactured by the company will be as specified and free of
defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY
KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL
IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION
OF LIABILITY: The 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 or 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 used in or
with any nuclear installation or activity, medical application, used on humans, or misused in
any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER
language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from
any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT
(IN ORDER 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.

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 trademark of OMEGA ENGINEERING, INC.
© Copyright 2018 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.

FOR WARRANTY RETURNS, please 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.

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.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE

MU

Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies

MU

Wire: Thermocouple, RTD & Thermistor

MU

Calibrators & Ice Point References

MU

Recorders, Controllers & Process Monitors

MU

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

MU

Transducers & Strain Gages

MU

Load Cells & Pressure Gages

MU

Displacement Transducers

MU

Instrumentation & Accessories

FLOW/LEVEL

MU

Rotameters, Gas Mass Flowmeters & Flow Computers

MU

Air Velocity Indicators

MU

Turbine/Paddlewheel Systems

MU

Totalizers & Batch Controllers

pH/CONDUCTIVITY

MU

pH Electrodes, Testers & Accessories

MU

Benchtop/Laboratory Meters

MU

Controllers, Calibrators, Simulators & Pumps

MU

Industrial pH & Conductivity Equipment

DATA ACQUISITION

MU

Communications-Based Acquisition Systems

MU

Data Logging Systems

MU

Wireless Sensors, Transmitters, & Receivers

MU

Signal Conditioners

MU

Data Acquisition Software

HEATERS

MU

Heating Cable

MU

Cartridge & Strip Heaters

MU

Immersion & Band Heaters

MU

Flexible Heaters

MU

Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

MU

Metering & Control Instrumentation

MU

Refractometers

MU

Pumps & Tubing

MU

Air, Soil & Water Monitors

MU

Industrial Water & Wastewater Treatment

MU

pH, Conductivity & Dissolved Oxygen Instruments

M5610/1018