INTRODUCTION
The HH506RA is a portable digital thermometer that
measures external thermocouples of type K, J, R, S, T, E,
and N. The thermocouple types comply with the NIST - ITS
90 standard reference temperature/voltage tables. The
thermometer features a dual thermocouple input, an adjust-
able T/C offset and an RS-232 interface for uploading data
to a PC using optional software and cable.
SAFETY INFORMATION
To avoid electrical shock do not use the device when
the working voltages exceed 24V AC or DC. To avoid
damages to the instrument and/or physical burns, do not
make measurements in microwave ovens. Avoid sharp
bending of the thermocouple leads to prolong its life,
especially near the connector.
WARNING
To avoid electrical shock, do not use this instrument
when working voltages at the measurement surface
are over 24V AC or DC.
WARNING
To avoid damage or burns, do not take temperature
measurements in microwave ovens.
CAUTION
Repeated sharp flexing can break the thermocouple
leads. To prolong lead life, avoid sharp bends in the
leads, especially near the connector.

GENERAL

Displays:
The Main and Second display panels are 4 1/2 digit liquid
crystal display (LCD) with maximum reading of 19999.
These panels are used for displaying the value of T1 or T2.
The Third panel displays the date, time, or the difference
value of T1 to T2. When the input measurement is
overloaded, the following is displayed “ ––––.–”.
Battery:
Standard 9V battery (NEDA 1604, IEC 6F22 006P)
Battery life is about 100 hours when used with a carbon zinc
battery.
Dimensions:
192 mm (H) x 91 mm (W) x 52.5 mm (D)
Weight: 365 g
Supplied Wire:
4 feet Type “K” thermocouple beaded wire (teflon tape
insulated). Maximum insulation temperature 260C
(500F). Wire accuracy 2.2C or 0.75% of reading
(whichever is greater) from 0C to 800C.

ENVIRONMENTAL

Ambient Operating Ranges:
0C to 50C (32F to 122F) <80% R.H.
Storage Temperature:
-20C to 60C (-4F to 140F) <70% R.H.
Input Connector:
Accepts standard miniature thermocouple connectors
(flat blades spaced 7.9 mm, center to center).
SPECIFICATIONS

ELECTRICAL

Temperature Scale:

Celsius or Fahrenheit
Measurement Range:
K-TYPE (0.1) -200C to 1372C,
-328F to 2501F
J-TYPE (0.1) -210C to 1200C,
-346F to 2192F
T-TYPE (0.1) -200C to 400C,
-328F to 752F
E-TYPE (0.1) -210C to 1000C,
-346F to 1832F
R-TYPE (1) 0C to 1767C,
32F to 3212F
S-TYPE (1) 0C to 1767C,
32F to 3212F
N-TYPE (0.1) -50C to 1300C,
-58F to 2372F
*Based on the ITS-90 temperature standard.
According to temperature standard ITS-90.
Accuracy:
K/J/T/E-TYPE
(0.05% rdg + 0.3C) on -50C to 1370C
(0.05% rdg + 0.7C) on -50C to -210C
(0.05% rdg + 0.6F) on -58F to 2501F
(0.05% rdg + 1.4F) on -58F to -346F
N-TYPE
(0.05% rdg + 0.8C) on -50C to 0C
(0.05% rdg + 0.4C) on 0C to 1300C
(0.05% rdg + 1.6F) on -58F to 32F
(0.05% rdg + 0.8F) on 32F to 2372F
R/S-TYPE
(0.05% rdg + 2C) on 0C to 1767C
(0.05% rdg + 4F) on 32F to 3212F
Temperature Coefficient:
0.1 times the applicable accuracy specification per C
from 0C to 18 and 28C to 50C (32F to 64F and 82F
to 122F)
Input Protecion:
24V dc or 24V ac rms maximum input voltage on any
combination of input pins.
Reading Rate: 2.5 time per second.

HH506RA

K, J, T, E, R, S, N Thermometer
INSTRUCTION
SHEET
M4079/0704
Shop online at: omega.com e-mail: info@omega.com
For latest product manuals: omegamanual.info

HH506RA

MULTILOGGER
THERMOMETER
Servicing North America:
U.S.A.:
One Omega Drive, Box 4047
Stamford, CT 06907-0047
ISO 9001
Certified
Tel: (203) 359-1660 FAX: (203) 359-7700
e-mail: info@omega.com
Canada:
976 Bergar
Laval (Quebec) H7L 5A1, Canada
Tel: (514) 856-6928 FAX: (514) 856-6886
e-mail: info@omega.ca
For immediate technical or application assistance:
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:
Engineering Service: 1-800-872-9436/1-800-USA-WHEN®
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA
Mexico:
En Espan˜ol: (001) 203-359-7803 e-mail: espanol@omega.com
FAX: (001) 203-359-7807 info@omega.com.mx
Servicing Europe:
Benelux:
Postbus 8034, 1180 LA Amstelveen, The Netherlands
Tel: +31 (0)20 3472121 FAX: +31 (0)20 6434643
Toll Free in Benelux: 0800 0993344
e-mail: sales@omegaeng.nl
Czech
Frystatska 184, 733 01 Karviná, Czech Republic
Republic:
Tel: +420 (0)59 6311899 FAX: +420 (0)59 6311114
Toll Free: 0800-1-66342 e-mail: info@omegashop.cz
France:
11, rue Jacques Cartier, 78280 Guyancourt, France
Tel: +33 (0)1 61 37 2900 FAX: +33 (0)1 30 57 5427
Toll Free in France: 0800 466 342
e-mail: sales@omega.fr
Germany/
Daimlerstrasse 26, D-75392 Deckenpfronn, Germany
Austria:
Tel:+ 49 (0)7056 9398-0 FAX: +49 (0)7056 9398-29
Toll Free in Germany: 0800 639 7678
e-mail: info@omega.de
United
One Omega Drive, River Bend Technology Centre
Kingdo
m: Northbank, Irlam, Manchester
ISO 9002
M44 5BD United Kingdom
Certified
Tel: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622
Toll Free in United Kingdom: 0800-488-488
e-mail: sales@omega.co.uk
OMEGAnet
®
On-Line Service Internet e-mail
omega.com info@omega.com
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.