Table of Contents
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Table of Contents
Related Manuals for TESTO 312
Summary of Contents for TESTO 312
- Page 1 312 - 2/3 Instruction manual 800.561.8187 information@itm.com www. .com...
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Page 2: Table Of Contents
Dear Customer You have made the right decision by purchasing testo 312. testo 312 is designed to adjust and maintain gas heating systems. Thousands of customers buy our high standard products every year. There are at least 7 good reasons for doing so. -
Page 3: Initial Operation
Initial operation Warnings Function check/Leak check Prior the commencing any testing the complete measuring system (intrument, probe and hoses) should be checked for leaks Temperature influence on the leak test During any leak tests the ambient temperature must remain constant to obtain valid data. Instrument should only be used by trained personnel. -
Page 4: Diagram Of Instrument
Initial operation Diagram of instrument Pressure connection Symbol for alarm On/Off Alarm levels Print Battery capacity Time Measuring units Parameters Date/Time Readings Freeze readings Parameters Measuring units Parameters Start measurement/ On/Off button Freeze readings Print button Scroll buttons OK button Audible alarm Cancel/Restore On/Off button... -
Page 5: Operating The Instrument
Initial operation Operating the instrument Keypad - Scrolling buttons Using the arrow buttons you can scroll between the parameters, digits in date/time and the alarm limits can be set. - Selection button In the date/time and alarm limits menu, access to the variable parameters is via the arrow button pointing to the right The units can also be changed. -
Page 6: Measurement Example
Measurement example: testo 312-2/-3 Switching on instrument Self-test Connect hose. Self-test Display for Press button. Displays all segments for battery approx. 3 seconds. Instrument capacity / version instrument version Battery capacity / Instrument version (2 digit) Displays battery/rechargeable battery voltage and instrument version for approx. -
Page 7: Differential Pressure Measurement
Measurement example: testo 312-2/-3 Differential pressure measurement testo 312-2: Range: 0 to 200 hPa. Resolution: 0.1 hPa testo 312-3: Range: 0 to 6000 hPa. Resolution: 1 hPa Connect 08:38 pressure Wait on calibration measuring phase (5 s) hose Position pressure... -
Page 8: Fine Pressure/Draught Measurement
Measurement example: testo 312-2 Fine pressure / Draught measurement testo 312-2: ΔP range 0 to 40 hPa. Resolution: 0.01 hPa testo 312-3: ΔP range 0 to 300 hPa. Resolution: 0.1 hPa Start measurement. Connect probe. 09:25 Wait on calibration Switch on phase (5 s) instrument. -
Page 9: Connection Options
Measurement example: testo 312-2/-3 Connection options Single-pipe Conical High pressure counter cap test plugs stepped plugs Mini valve Junction Connection hose Pressure drop set Suitable for: - Pre-test - Main test Connect pressure transducer directly to instrument. Do not - Testing service ability use extensions. -
Page 10: Pre-Test / Main Test
Measurement example: testo 312-2/-3 Pre-test / Main test Carry out function test! Gas should not get into the instrument when carrying out measurements on gas pipes. Example Pressure drop Insert single- The complete measuring system pipe counter (instrument, probe, hoses and connec-... -
Page 11: Service Ability Test
Measurement example: testo 312-2/-3 Service ability test Carry out function test! Gas should not get into the instrument when carrying out measurements on gas pipes. Insert single- pipe counter Pressure drop cap and The complete measuring system tighten. (instrument, probe, hoses and connections) should be checked for a drop in pressure e.g. -
Page 12: Setting Alarm Limits
Setting alarm limits Differential pressure (testo 312-2/-3), draught (testo 312-2) Differential pressure Draught 08:51 08:54 100.0 - 0.04 Switch on instrument. Increase or decrease alarm limits via arrow buttons. - Segment test (3 s) - Voltage display (3 s) After the measurement, the flashing is a sign (See page 6) that an alarm limit is set and was reached. -
Page 13: Setting Date/Time
Setting date/time Switch on instrument Press button. Setting minutes - Segment test (3 s) 08:35 - Voltage display (3 s) Increase or decrease digit (See page 6) with arrow ----- buttons. Press OK button to return to Measurement measurement menu menu 08:34 Press... - Page 14 Setting date/time Press button Setting the month Increase or decrease digit 02:06 with arrow buttons. Press ----- OK button to return to measurement menu. Note: The date display can be changed from Day/Month (EUR) to Month/Day (US) by pressing Press button.
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Page 15: Setting Timer For Printout
Setting timer for printout Timer setting Increase or 08:35 reduce value using arrow buttons. Switch on instrument Press button. - Segment test (3 sec.) - Voltage display (3 sec.) Timer setting (See page 6) Increase or 08:35 reduce value Measurement using arrow menu buttons. -
Page 16: Setting Number Of Printouts
Setting number of printouts Display timer 08:35 Switch on instrument - Segment test (3 sec.) - Voltage display (3 sec.) Press button (See page 6) Set number of printouts Increase or Measurement 08:35 reduce menu number using arrow buttons. 08:34 ----- Press button... -
Page 17: Changing The Units
Select units by pressing Differential pressure measurement hPa, mbar, mmH O, inchH Draught measurement hPa, mbar, mmH O, inchH O (testo 312-2 only) Selection saved. Return to measurement menu. You can leave the menu by pressing the changes are not made. 800.561.8187 information@itm.com... -
Page 18: Maintenance
Exxx appears in the bottom line -- -- -- -- Pressure sensor is overloaded. If we were unable to answer your question, please contact your distributor or Testo Customer Service. For contact data, see back of this document or web page www.testo.com/service-contact 800.561.8187 information@itm.com... -
Page 19: Technical Data
Technical data testo 312 General Technical data for testo 312-2 and testo 312-3 Storage temperature: -20 to +60 °C Operation temperature: +5 to +45 °C Dimensions: 215mm x 68mm x 47mm Weight: Approx. 400 g Differential pressure measurement testo 312-2 ΔP... -
Page 20: Ordering Data
Ordering data testo 312 Description Part no. Instrument testo 312-2 compact pressure gauge with instruction manual and battery 0632.0313 testo 312-3 compact pressure gauge with instruction manual and battery 0632.0314 Accessories Testo printer, prints measurement data with location, date and time 0554.0547... -
Page 21: Pressure Transducer (Accessories)
Pressure transducer (Accessories) Instructions Normal use The pressure transducer protects the testo 312 measuring instrument from moisture and high temperatures: measures vapour and water pressure. Connection P Measuring Do not use an extension cable between the pressure transducer and the instrument. - Page 22 AG Postfach 11 40, 79849 Lenzkirch Testo-Straße 1, 79853 Lenzkirch Telefon: (07653) 681-0 Fax: (07653) 681-100 E-Mail: info@testo.de Internet: http://www.testo.com 0973 3124 en 02 V01.04 en_DE 800.561.8187 information@itm.com www. .com...
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