Warranty
Onset Computer Corporation (“Onset”)
warrants to the original end-user purchaser for
a period of one year from the date of original
purchase that the HOBO
®
product(s)
purchased will be free from defect in material
and workmanship. During the warranty period
Onset will, at its option, either repair or
replace products that prove to be defective in
material or workmanship. This warranty shall
terminate and be of no further effect at the
time the product is (1) damaged by extraneous
cause such as fire, water, lightning, etc. or not
maintained in accordance with the
accompanying documentation; (2) modified; (3)
improperly installed; (4) repaired by someone
other than Onset; or (5) used in a manner or
purpose for which the product was not
intended.
Returning Products to Onset
Direct all warranty claims to place of
purchase. Before returning a failed unit, you
must obtain a Return Merchandise
Authorization (RMA) number from Onset. You
must provide proof that you purchased
the Onset product(s) directly from Onset
(purchase order number or Onset invoice
number). Onset will issue an RMA
number that is valid for 30 days. You
must ship the product(s), properly
packaged against further damage, to
Onset (at your expense) with the RMA
number marked clearly on the outside of
the package. Onset is not responsible for
any package that is returned without a
valid RMA number or for the loss of the
package by any shipping company. Loggers
must be clean and free of any toxins before
they are sent back to Onset or they may be
returned to you.
Repair Policy
Products that are returned after the warranty
period or that are damaged by the customer as
specified in the warranty provisions can be
returned to Onset with a valid RMA number
for evaluation.
Please contact Onset for more information and
prices on:
ASAP Repair Policy
Onset will expedite the repair of a returned
product.
Data-back
™
Service
HOBO
®
data loggers store data in nonvolatile
EEPROM memory. Onset will, if possible,
recover your data to a disk.
Tune Up
™
Service
Onset will examine and retest any HOBO
®
data logger.
Thank you for buying a HOBO H8 Pro Temp/RH IS data logger. With proper care
it will give you years of accurate and reliable measurements.
This manual covers the HOBO H8 Pro Temp/RH IS product. This logger stores up
to 65,291 time-stamped measurements.
Unlike most other HOBOs, the HOBO Pro does not have the wrap-around-when-
full option for storing data; its large memory capacity eliminates the need for this
function in most cases.
Safety Information - Read First
WARNING
: The H08-032-IS logger is rated as Intrinsically Safe, however,
available communication accessories are not. Do not attempt to download or
relaunch the logger using the HOBO Shuttle, handheld PDA or any host computer
in a hazardous environment, as these devices do not carry the Intrinsically Safe
rating and are not intrinsically compatible with HOBO-IS Loggers. See the “Logger
Specifications” for the complete Intrinsically Safe listing and see the section of this
manual entitled “Intrinsically Safe” for more information about hazardous location
and the H08-032-IS.
WARNING:
Fire, Explosion, and Severe Burn Hazard. The logger contains a
lithium battery. The battery may explode if the logger is exposed to extreme heat or
conditions that could damage or destroy the battery case. Do not attempt to
recharge or heat the logger or battery above +185
o
F (+85
o
C). Do not dispose of the
logger or battery in fire. Do not expose the contents of the battery to water. Dispose
of the battery according to local regulations for lithium batteries.
WARNING:
Only qualified personnel should install and service equipment
located in Hazardous (Classified) Areas.
Common Specifications
Operating range (logger): -30°C to +50°C (-22°F to +122°F),
0 - 100% RH, HOBO Pro RH/Temp IS should be mounted
so that water does not impact or collect in the RH sensor.
RH Sensor operating environment: 0°C to +50°C (+32°F to
+122°F) in intermittent condensing environments up to
+30°C; and above +30°C in non-condensing environments.
Sensor requires protection from rain, splashing, mist,
dust, and airborne chemicals such as salt and ammonia.
Time accuracy: approx. ±1 minute per week (±100 ppm at
+20°C or +68°F), full dependence shown in Plot A.
Measurement capacity: 65,291 standard-resolution (8-bit) measurements, 32,645
high-resolution (12-bit) measurements or 21,763 measurements if one channel
uses standard-resolution and the other channel uses high-resolution. RH
measurements use standard resolution only. All measurements are stored in
nonvolatile memory, with seven levels of data archiving (See Non-Volatile
Memory).
Data offload time: 1 minute typical
Size: 4.0" H x 3.2" W x 2.0" D
Weight: approx. 3.7 oz.
Battery: Tadiran TL-5902, lithium, (3.6V 1.2Ah), user-replaceable (Use only Onset
part # HP-B)
Battery life (continuous use): 3 years
Storage temperature: -30°C to +75°C (-22°F to +167°F)
Intrinsically Safe Rating: IS, Class I, II, Division 1, Groups A-G, Temperature
Code T4 (
<135
o
C); NI, Class I, Division 2, Groups A-D, Temperature Code T4
(
<135
o
C); S, Class II, Division 2, Groups F and G
Note: Before replacing the back plate, check that the logger seals (O-ring, screw, jack
cap) are not contaminated by dust, dirt or other materials. All components must be
cleaned of any contaminants to ensure a weathertight seal. Make sure the back plate
O-ring has a light film of lubricant (Dow Corning DC 111 or Nye Lubricants
NYOGEL). Insert the O-ring in the groove and replace the back plate using the screw
with O-ring. The screw should be tightened until it is snug, be careful not to
overtighten. The screw will go in smoothly and suddenly tighten; rotate the screw no
more than 1mm more. Do not use lubricant on jack cap.
Intrinsically Safe
Factory Mutual Research has certified the H08-032-IS is safe for use in certain
hazardous areas. The National Electrical Code has classified many types of
hazardous locations. The H08-032-IS has been approved as intrinsically safe in
Class I and II locations which are areas where ignitable concentrations of gas
(Class I) and/or dust (Class II) exist. The NEC further classifies hazardous location
by Division (1 or 2). The division designation refers to the likelihood that the area
will contain ignitable concentrations of gas or dust. Division 1 locations will have
ignitable concentrations of gas or dust continuously or under normal operation
conditions. Division 2 locations will have ignitable concentrations of gas or dust
only during infrequent or abnormal operations (which may include areas located
near Division 1 locations). The H08-032-IS has been approved for use in both
Division 1 and 2 locations. The hazardous area classification scheme is further
defined by listing the types of ignitable gases and dusts that may be present in a
hazardous location. Ignitable gases and dusts are sorted into groups with similar
ignition characteristics. The H08-032-IS is certified for all possible groups: A-G for
gas and A-D, F and G for dust. Finally every Intrinsically Safe Device is given a
temperature rating. The H08-032-IS has a T4 rating, which means that no part of
the device will become warmer than +275
o
F (+135
o
C) in a worst-case fault. For more
information on Hazardous (Classified) Locations visit the Underwriters Laboratory
web site at www.ul.com/hazloc/define.htm.
Non-Volatile Memory
The HOBO Pro uses a high-capacity Flash EEPROM to store data. This storage is
non-volatile and will retain the data even if the battery is removed. To save power
and maximize the life of the flash memory device, 32 bytes of data are buffered in
RAM prior to writing to the flash memory. In the case of a dead battery, or the
unlikely event that power is interrupted during logging, the data in this RAM buffer
will be lost. For example, if the sample interval was set to one half hour and one
channel with low resolution, then up to 16 hours of data could be lost.
NOTE: The logger software's absolute humidity calculation does not use an actual
pressure measurement but assumes an ambient pressure of 1 atmosphere (14.7 PSI.)
Service and Support
HOBO
®
products are easy to use and
reliable. In the unlikely event that you have
a problem with the hardware or software,
please read the following.
Who do I contact?
Contact the company that you bought the
loggers from: Onset Computer Corporation
or an Onset Authorized Dealer.
Before calling, you can evaluate and often
solve your problem if you try the following:
1. Read this manual and the ReadMe file on
the software disk. It may only take a few
moments to get the answers you need.
2. Write down the events that led to the
problem. Have you changed anything in
your computer recently? Are you doing
anything differently?
When contacting Onset Computer
Corporation, please indicate that you need
Technical Support for HOBO
®
products.
Be prepared to:
1. Provide the product number which is
found on the side of the logger, the software
version and serial number if present on the
disk.
2. Provide details on the hardware and
software configuration of your computer
including: manufacturer, model number,
peripherals, and version of operating
system.
3. Completely describe the problem or
question. The more information you provide,
the faster and more accurately we will be
able to respond.
NOTE: Onset provides technical support to
one person for each software license.
Onset Technical Support
Onset Computer Corporation
470 MacArthur Blvd.
Bourne, MA 02532
Mailing: PO Box 3450
Pocasset, MA 02559-3450
1-800-LOGGERS (1-800-564-4377)
Phone: (508) 759-9500
Fax: (508) 759-9100
E-mail: [email protected]
www.onsetcomp.com
5896-D MAN-HO8-032-IS
4/21/04, 8:01 AM
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