Omega HH802U User Manual

OPERATING INSTRUCTIONS

MODEL HH802U

DUAL INPUT K/J

DIGITAL THERMOMETER

HH802U

MADE IN TAIWAN

INTRODUCTION

This instrument is a 5 digit, compact-sized portable digital thermometer de­signed to use external K type and J type thermocouple sensor. Temperature
indication follows Reference Temperature/Voltage Tables (N.I.S.T. Mono­graph 175 Revised to ITS-90) for K type and J type thermocouples. Two K
type thermocouple are supplied with the thermometer.

SAFETY INFORMATION

It is recommended that you read the safety and operation instructions before

using the thermometer.

WARNING

To avoid electrical shock, do not use this instrument when working voltages

at the measurement surface over 24V AC or DC.

WARNING

To avoid damage or burns, do not make temperature measurement in mi-

crowave ovens.

CAUTION

Repeated sharp flexing can break the thermocouple leads. To prolong lead

life, avoid sharp bends in the leads, especially near the connector.

Input Connector:

Accepts standard miniature thermocouple connectors (flat blades spaced

7.9mm, center to center).

ENVIRONMENTAL

Ambient Operating Ranges:

0°C to 50°C (32°F to 122°F) <70% R.H.

Storage Temperature:

-20°C to 60°C (-4°F to 140°F) <80% R.H.

GENERAL

Display: 5 digit liquid crystal display (LCD).
Overload: “----.-“ or “OL” is display.
Battery: 1.5V x 4 PCS (SIZE AAA) UM-4 R03.
Battery Life: 200 hours typical with carbon zinc battery.
Auto power off: 30 minutes, press power key to resume operation.
Dimensions: 160mm(H) x 83mm(W) x 38mm(D)
Weight: Approx. 265g including batteries.
Supplied Thermocouples (1 per input):

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.

SPECIFICATIONS

ELECTRICAL

Temperature Scale: Celsius or Fahrenheit user selectable.
Measurement Range:

J-TYPE -200°C to 1050°C, (-328°F to 1922°F)
K-TYPE -200°C to 1370°C, (-328°F to 2498°F)

Resolution: 0.1°C or 0.2°F
Accuracy: Accuracy is specified for operating temperatures over the range of

18°C to 28°C (64°F to 82°F), for 1 year, not including thermocouple error.
±(0.05% rdg + 0.3°C) -50°C to 1370°C
±(0.05% rdg + 0.7°C) -50°C to -200°C

±(0.05% rdg + 0.6°F) -58°F to 2498°F
±(0.05% rdg + 1.4°F) -58°F to -328°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).

Input Protection:

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

Maximum Differential Common Mode Voltage (Maximum Voltage be­tween T1 and T2 during measurement): 1volt.
Reading Rate: 1 sample/second.

OPERATING INSTRUCTIONS

1. Power Switch

key turns the thermometer on or off. In the SET mode the unit can-

The
not be powered off. Exit SET mode to power off.

APO function mode

Press

power key for more than 6 seconds to disable the auto-power

function. The display will show “APO OFF”.

2. °C/°F Selecting the Temperature Scale

Readings are displayed in either degrees Celsius(°C) or degrees Fahren­heit(°F). When the thermometer is turned on, it is set to the temperature
scale that was in use when the thermometer was last turned off. To change
the temperature scale, press the °C/°F key.

3. Button (only Main display)

Press this key to enter the Data Hold mode, the “HOLD” annunciator is dis­played. When HOLD mode is selected, the thermometer holds the present

readings and stops all further measurements. Press the key again to
cancel HOLD mode and resume measurement. In the MIN/MAX recording

mode, press key to stop the recording. Press key again to resume
recording. (Previously recorded readings are not erased).

Backlight function mode

Press the button for more than two seconds to turn on the backlight
Press the button again for more than two seconds to turn off the backlight.
The backlight will switch-off automatically after 30 seconds.

4. T1 T2/T1-T2 Main Display Input Selection

The input selection determines which input is selected for the main display;
T1 thermocouple, T2 thermocouple or the difference between the two ther­mocouples (T1-T2), when the thermometer is turned on it is set to T1.

5. K/J T1 Input Type Selection (Main display)

The K/J key selects the T1 thermocouple type, when the main display is
showing T1. When the thermometer is turned on, it is set to the type se­lected when the thermometer was last turned off.

6. MIN MAX with Elapsed Time Mode (only Main display)

Press MIN MAX key to enter the MIN MAX Recording mode, (displays the
Maximum reading with time, Minimum reading with time and Average
reading stored in record mode). In the this mode the automatic power-off

feature is disabled and
key and main display T1 T2 T1-T2 key, K/J key are disabled. The beeper
emits a tone when a new minimum or maximum value is recorded.

key, °C/°F key, REL key, SET key, Hi/Lo Limits

Push MIN MAX key to cycle through the MAX, MIN and AVG readings. If
an overload is recorded, the averaging function is stopped. In this mode,
press the HOLD key to stop the recording of readings, all values are held,
press again to restart recording.
To prevent accidental loss of MIN, MAX and AVG data, this mode can
only be cancelled by pressing and holding the MIN MAX key for 2 seconds.
All recorded readings are erased.

7. REL Relative mode (only Main display)

Press the REL key to enter the Relative mode, zero the display, and store
the displayed Reading as a reference value. REL is shown on the display.
Press REL key again to exit the relative mode. The relative reference value
can also be entered by the user. (See “SET mode” later in this manual.)
When the desired Relative value has been entered, press REL key to enter
the Relative mode and then press SET key use the entered Relative value as
a reference value. Press REL key again to exit the relative mode. In the
Relative mode, the value (can not >±3000.0 counts) shown on the LCD is
always the difference between the stored reference and the present reading.

8. Sec. Minu. Selecting the Elapsed Time scale

Press this key to display the elapsed time on the third display in either hours
and minutes or minutes and seconds. When the thermometer is turned on, it
is set to seconds. To change the time scale, press sec. Minus. key. Maxi­mum elapsed time reading is 100 hours. If 100 hours is exceeded, the
elapsed time resets to zero.

Press the SET key to enter Relative value SET mode (Press ENTER key

to skip setting relative value). = = = =.= is displayed on the main display.
The Relative value is entered via overlay numbers, press overlay ENTER
key to store the relative value, and advance to elapsed time set mode.

Elapsed Time set mode, (Press ENTER key to skip Elapsed Time set

mode) =.= = = : = = is displayed in second and third display. Time
(hours, minutes, seconds) value is entered via overlay numbers, press
overlay

ENTER key to store Time value. Elapsed Time starts from set time
value.

Hi Limit value set mode, is displayed (Press ENTER key to skip

Hi Limit value set mode), = = = =.= is displayed in main display, Hi
Limit value is entered via overlay numbers, then press ENTER key to
store the Hi Limit value. = = = =.= is displayed in main display, Lo Limit
value is entered via overlay numbers, then press overlay ENTER key to
store the Lo Limit value and exit SET mode.

When the thermometer is turned on it uses the Relative value and Hi/Lo

Limits values that were entered when thermometer was last in use.

10.T1/T2 T1-T2 second display Input Selection

The input selection indicates which input is selected for second display; T1
thermocouple, T2 thermocouple or the difference between the two thermo­couples (T1-T2). When the thermometer is turned on, it is set to T2 input.
To select a different type of thermocouple use the K/J button.

11.K/J T2 Thermocouple type select (second display)

The K/J button for T2 input selects K-type or J-type thermocouple as input,
when the second display has T2 shown. When the thermometer is turned on,
it is set to the type selected when the thermometer was last turned off.

12.Hi/Lo Limits mode (only Main display)

Press Hi/Lo Limits key to enter the Hi/Lo Limits comparative mode. is
displayed. When the input temperature value exceeds the Hi or Lo Limit
value, the beeper emits a continuous or pulse tone. Press Hi/Lo Limits key
again to exit the Hi/Lo Limits mode.

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.
WARNING: These products are not designed for use in, and should not be used for, human
applications.

OPERATOR MAINTENANCE

To avoid possible electrical shock, disconnect the thermocouple connectors

from the thermometer before removing the cover.

Battery Replacement

1. Power is supplied by 4pcs 1.5V (SIZE AAA) R03P.

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 the batteries should be removed.

5. Do not ations with high temperatures, or high humidity.

Cleaning

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

OMEGAnet®On-Line Service Internet e-mail

omega.com [e-mail]

U.S.A.: ISO 9001 Certified

One Omega Drive, Box 4047
Stamford, CT 06907-0047
Tel: [phone]
FAX: [phone]
e-mail: [e-mail]

U.S.A. and Canada:

Sales Service: 1-800-826-6342/1-800-TC-OMEGA
Customer Service: 1-800-622-2378/1-800-622-BEST
Engineering Service: 1-800-872-9436/1-800-USA-WHEN

Czech Republic:

Frystatska 184, 733 01 Karvina´, Czech Republic
Tel: [phone]
FAX: [phone]
Toll Free: 0800-1-66342
e-mail: [e-mail]

Germany/Austria:

Daimlerstrasse 26, D-75392
Deckenpfronn, Germany
Tel: [phone]
FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

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.

FOR WARRANTY
the following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which

2. Model and serial number of the product

3. Repair instructions and/or specific

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 2007 OMEGA ENGINEERING, INC. All rights reserved. This document may not be
copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine­readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

For immediate technical or application assistance:

RETURN REQUESTS/INQUIRIES

RETURNS, please have

the product was PURCHASED,

under warranty, and

problems relative to the product.

WARNING

Servicing North America:

Servicing Europe:

Canada:

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

®

®

®

United Kingdom

ISO 9002 Certified

One Omega Drive
River Bend Technology Centre
Northbank, Irlam
Manchester M44 5BD

United Kingdom
Tel: [phone]

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

FOR NON-WARRANTY REPAIRS,
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.

-

Mexico:

En Espan~ol: [phone]-7803
FAX: [phone]
e-mail: [e-mail]

[e-mail]

consult

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds
an additional one (1) 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.

Where Do I Find Everything I Need for

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OMEGA…Of Course!

Shop online at omega.com

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V1. 032707

M4498/0607