Omega HH911T User manual

HH911T, HH912T
Thermocouple Thermometer
TM
e-mail: [email protected]
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User’s Guide

omega.com [email protected]
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.
Servicing North America:
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: [email protected]
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 Uncertainties.........................................................................B-i
C. Instrument Verification Data Sheet ................................................................ C-4.2.2-i

Instrument Description
2-1
INSTRUMENT DESCRIPTION
Specifications
G
ENERAL
S
PECIFICATIONS
:
Basic Accuracy
±(0.04% |rdg| + 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 Function
Resolution 0.1 °C/°F/K
Display
Four (4) digit LCD, with Temperature, Units,
Function, Trend, Polarity, 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 Trend Indicators
Battery Type
3 AA (IEC LR6, ANSI 15) Alkaline
Battery Life
2000 Hours Typical
Battery Indicator
Four (4) Stage Battery Charge Indicator
Statistics
Minimum Reading
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 Voltage 42 V peak to earth
1 V p-p between T1
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 61000-4
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 variances due to ambient operating
temperature, see the Expanded Instrument Uncertainty charts
in Appendix Bof this manual. For ambient operating
temperatures not shown in 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 to Concrete
Storage Temp
-40 to 71 °C
-40 to 159 °F
P
HYSICAL
C
HARACTERISTICS
:
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.)
1For 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 Input
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 Thermocouple Thermometers are high-accuracy handheld
digital thermometers that provide accurate temperature readings in a wide range of
manufacturing and service applications. These full-featured, durable, and versatile
instruments simplify the process of temperature measurement through the intuitive user-
interface. They are compatible with the four most popular NIST traceable thermocouple
types, K, J, T, and E.
Feature Overview
•Keypad with audible and tactile feedback;
•2000-hour battery life1;
•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-T22;
•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 routine to identify fault conditions;
•Low battery and open sensor indications;
1Typical 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.
2T1-T2 is available on model HH912T only.

Preparation for Use
2-2
Safety Notices and Information
Symbols and Terms
Safety Notices denote hazards. They indicate an operating procedure, instruction, or practice
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 understood 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 thermocouple leads to any source where more than 42 Volts (peak) could exist
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.
EXPLOSION HAZARD
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 temperature 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. Upon receiving
your new Omega digital thermometer, unpack all items from the shipping container and
check for any obvious damage that may have occurred during transit. Use the original
packing materials if reshipment is necessary.
If any dents, broken, or loose parts are seen, do not use the equipment. Notify Omega
immediately.
Check that all items are present. If any items are missing, 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 supplied 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. Re-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: Phillips Head Screwdriver
1. Identify the battery compartment located on the back of the instrument (see
Figure 1below);
2. Remove the two (2) battery compartment retaining screws;
3. Remove the battery compartment cover;
4. If present, carefully remove old batteries being careful to not damage 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;