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User Manual

Humidity-Temperature Chart Recorder

Model RH520

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Summary of Contents for RH520

Page 1: ...User Manual Humidity Temperature Chart Recorder Model RH520...

Page 2: ...es 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 aut...

Page 3: ...g interval Selectable recording rate 0 1 to 199 9 minutes Graph scaling User selectable in 10 o F 5 o C and 10 increments Low battery indication 5 segment battery indicator Power supply Three 3 AA bat...

Page 4: ...adaptor jack 8 DATA RESET button clears recorded measurement data and alarm history 9 Temperature units select switch C or F 10 PROGRAMMING RESET button clears programming changes but retains measure...

Page 5: ...al memory usage meter 3 Vertical axis scale limits 4 Cursor Alarm indicators 5 Push button lock out status indicator 6 Time display 7 Relative Humidity RH measurement graph 8 Date display 9 Function i...

Page 6: ...button to display Dew Point Right left down and up arrow buttons for scrolling data and navigating the display KEYPAD QUICK REFERENCE ALSO SHOWN ON REAR OF THE RH520 HOUSING Key press Function Second...

Page 7: ...are dark the battery is fully charged Segments switch off as the battery ages When the battery indicator has only one segment left the batteries must be replaced immediately NOTE Always set the date...

Page 8: ...the SET TEMP and UP arrow buttons simultaneously 2 The upper temperature range indicator will flash and the SET icon will appear 3 Use the UP DOWN buttons to change the upper temperature value 10 o in...

Page 9: ...ement decrement the HIGH temperature alarm limit Use the LEFT RIGHT arrow buttons to step through the decades 4 Press the ALARM button The MIN low alarm indicator will switch on 5 Use the UP DOWN arro...

Page 10: ...ess of the RIGHT ARROW button will move the cursor to the right When the cursor reaches the right side limit the graph will move to the left Holding the button down will speed the scrolling rate When...

Page 11: ...H reading digits the display is showing the MAX or MIN relative humidity ALARM DISPLAYS 1 Press the ALARM button from the Standard View to analyze the most recent alarm activity temperature or humidit...

Page 12: ...s for the selected Time will display 4 Press VIEW to return to the Standard View DEW POINT DISPLAY Press the TEMP and the RH buttons simultaneously to view the Dew Point reading The DEW POINT display...

Page 13: ...be full based on the current sample rate is displayed in the TIME and DATE display areas 4 To change the sample rate refer to the programming section of this manual 5 Press the VIEW button to return t...

Page 14: ...n 0 to 100 TEMP and RH Alarm Limits 0 low and 100 high Sample Rate One 1 reading stored per minute Battery Replacement The 5 segment battery life indicator allows the user to track the status of the b...

Page 15: ...t our website www extech com Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the C...

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