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User Manual 

 
 

 
 

Paperless Humidity/Temperature Chart 
Recorder 

 

 

Model RH520 

 

C

13:45

04-23-04

30

10

100

0

38

21.2

www.calcert.com

[email protected]

1.888.610.7664

0

5

10

15

20

25

30

Summary of Contents for EXTECH RH520

Page 1: ...User Manual Paperless Humidity Temperature Chart Recorder Model RH520 C 13 45 04 23 04 30 10 100 0 38 21 2 www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30...

Page 2: ...this instrument will provide years of reliable service CAUTIONS This device is not a toy and must not reach children s hands It contains hazardous objects as well as small parts that the children coul...

Page 3: ...on clears recorded measurement data and alarm history 9 Temperature units select switch C or F 10 PROGRAMMING RESET button clears programming changes but retains measurement data and alarm history 11...

Page 4: ...ical 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 indicators 10 Numerical tempe...

Page 5: ...ht 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 Alternate Keystrokes VIEW Selec...

Page 6: ...the battery ages When the battery indicator has only one segment left the batteries must be replaced immediately NOTE Always set the date and time immediately after batteries have been installed or af...

Page 7: ...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 5 incremen...

Page 8: ...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 arrow buttons to increment de...

Page 9: ...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 the cursor reaches the oldest last...

Page 10: ...ing 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 humidity if any The ALARM display icon and...

Page 11: ...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 icon will switch on above the temper...

Page 12: ...n 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 to the Standard View Transfer logged readings using the...

Page 13: ...1 reading stored per minute Battery Replacement The 5 segment battery life indicator allows the user to track the status of the battery When all 5 segments are dark the battery is fully charged Segmen...

Page 14: ...Vdc Power supply Three 3 AA batteries and AC adaptor included DC4 5V 300mA 3 5mm x 1 35 mm plug Battery life 4 weeks typical using alkaline batteries Operating Temperature CONTROL MODULE and DISPLAY 0...

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