Xylem RH 520 PAPERLESS HUMIDITY/TEMPERATURE CHART RECORDERS - Manual (Page 2)

Model RH520 Version 2.7 7/05 2
Introduction
Congratulations on your purchase of the Extech RH520 Temperature + Humidity Chart
Recorder. The RH520 measures and displays Temperature, Humidity, and Dew Point.
The remote (detachable) probe senses the ambient conditions while the LCD display
graphs and provides numerical representation of the readings. Programmable audio-
visual alarms alert the user when ambient conditions reach alarm presets. The optional
alarm module permits automatic relay switching when alarm presets are reached.
The RH520 Internal Memory can store up to 49,152 measurements for later transfer to a
PC. Careful use of this instrument will provide years of reliable service.
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects
in parts and workmanship for one year from date of shipment (a six month limited warranty
applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set
forth above is inclusive and no other warranty, whether written or oral, is expressed or
implied.