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RH520 V2.9  3/07 

SETTING THE RECORDING SAMPLE RATE 

The Sampling Rate is the rate at which the RH520 automatically records measurements 

1. Press 

the 

SET

VIEW

, and 

TIME

 arrow buttons simultaneously from the Standard View 

2.  The current Sample Rate (in minutes) will appear in the numerical temperature display 

area 

3.  The whole minutes area of the numeric display will flash 

4.  The MIN and the SET icons will switch on. All other TEMP and RH indicators and 

numeric displays will switch off 

5.  The projected TIME and DAYS representing the moment the internal memory will be 

full (based on the sample rate) is displayed in the TIME and DATE display areas. 

6. Use 

the 

UP-DOWN

 arrow buttons to increment/decrement the rate. Use the

 LEFT-

RIGHT

 arrow buttons to step through the units of time 

7.  Sample rates can be set from 0.1 minutes up to 199.9 minutes 

8. Press 

the 

SET

 button at any time to save changes and return to the Standard View 

9. Press 

VIEW

 at any time to return to the Standard View without saving the changes 

SETTING THE TEMPERATURE ALARM LIMITS 

1. Press 

the 

SET

TEMP

, and 

ALARM

 buttons simultaneously from the Standard View 

2.  The ALARM, SET, and MAX indicators will switch on. All of the RH indicators will 

switch off 

3. Use 

the 

UP-DOWN

 arrow buttons to increment/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

 arrow buttons to increment/decrement the LOW temperature alarm 

limit. Use the 

LEFT-RIGHT

 arrow buttons to step through the decades 

6.  The HIGH and LOW alarm limits cannot overlap 

7. Use 

the 

ALARM

 button to toggle between the HIGH and the LOW alarm limits 

8. Press 

the 

SET

 button at any time to save changes and return to the Standard View 

9. Press 

VIEW

 at any time to return to the Standard View without saving the changes 

SETTING THE RH ALARM LIMITS 

1. Press 

the 

SET

RH

, and 

ALARM

 buttons simultaneously from the Standard View 

2.  The ALARM, SET, and MAX indicators will switch on. All of the TEMP indicators will 

switch off 

3. Use 

the 

UP-DOWN 

arrow buttons to increment/decrement the HIGH RH 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/decrement the LOW RH alarm limit. 

Use the 

LEFT-RIGHT

 arrow buttons to step through the decades 

6.  The HIGH and LOW alarm limits cannot overlap 

7. Use 

the 

ALARM

 button to toggle between the HIGH and the LOW alarm limits 

8. Press 

the 

SET

 button at any time to save changes and return to the Standard View 

9. Press 

VIEW

 at any time to return to the Standard View without saving the changes 

Содержание RH520

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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