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   HT4000 

 

 

 

 

EN - 3

2. GENERAL DESCRIPTION 

The HT4000 meter can perform the following measurements: 
 

  Air speed measurement with 30 mm diameter external probe 

  Airflow measurement in m

3

/min (CMM) and ft

3

/min (CFM) 

  Air temperature measurement in °C/°F with external probe 

  Relative humidity measurement %RH with external probe 

 Atmospheric 

pressure 

measurement with internal sensor 

  Maximum, minimum and average (AVG) values 

 Data 

HOLD 

  Internal memory with  99 locations for measurement storing 

 Back 

light 

  Auto power OFF 

 
Each function could be selected via the relative key. The selected quantity appears on a 
high-contrast liquid crystal display with indication of measurement unit and of the active 
functions. There are also the function keys, for their use please see § 4.3. 
 
 

3.  PREPARATION FOR USE 

3.1. INITIAL 

The instrument has been checked from every point of view before shipment. Every care 
has been taken to make sure that the instrument reaches you in perfect conditions. 
 
However, it’s advisable to make a rapid check in order to detect eventual damages, which 
may have occurred in transit. Should this be the case, enter immediately the usual claims 
with the carrier. 
 
Make sure that all the accessories listed in § 6.3 are contained in the package. In case of 
discrepancies contact the dealer. 
 
In case of returning of the tester, please keep to the instructions given in § 7. 
 

3.2. POWER 

SUPPLY 

The instrument is battery supplied by 1 battery 9V type 9V NEDA 1604 IEC 6F22 JIS 006P 
included in the package. Battery life: about 100 hours. When battery is low, the symbol 
"

" appears on the display. Replace it immediately, following the instructions given in § 

5.2. 
 

3.3. CALIBRATION 

The instrument complies with the technical features listed in this manual. Its performances 
are guaranteed for one year. 
 

3.4. STORAGE 

In order to guarantee the accuracy of the measurements, after a period of storage in 
extreme environmental condition, wait for the necessary time so that the instrument 
returns to normal measuring conditions (see § 6.2.1). 

Summary of Contents for 4000

Page 1: ... Copyright HT ITALIA 2011 Release EN 1 02 28 12 2011 ENGLISH User manual ...

Page 2: ...bols as well as Firmware version 6 4 4 Preliminary operations 7 4 4 1 Activation of display backlight 7 4 4 2 Change of measuring unit 7 4 5 Measurement of air speed as well as temperature humidity 8 4 6 Measurement of air flow 9 4 7 Measurement of atmospheric pressure 9 4 8 Saving of results 10 4 9 Recall of results to display 10 4 10 Cancellation of internal memory 10 5 MAINTENANCE 11 5 1 Genera...

Page 3: ...us or its components 1 1 PRELIMINARY Use the meter only as specified in this manual otherwise the protection provided by the meter may be impaired Only the accessories supplied with the instrument guarantee compliance with the safety standards They must be in good conditions and must be replaced if necessary with identical models Do not effect measurements beyond the limits specified in this manua...

Page 4: ...ure that the instrument reaches you in perfect conditions However it s advisable to make a rapid check in order to detect eventual damages which may have occurred in transit Should this be the case enter immediately the usual claims with the carrier Make sure that all the accessories listed in 6 3 are contained in the package In case of discrepancies contact the dealer In case of returning of the ...

Page 5: ...key 11 Sensor fan 12 Sensor for temperature humidity measurement 13 Probe handle 14 Battery compartment 15 Battery compartment cover 16 External probe input terminal Fig 1 Instrument description 4 2 DISPLAY DESCRIPTION LEGEND 1 Low battery indication 2 Indication of active Auto Power OFF 3 Main display measuring unit 4 Secondary display measuring unit 5 Secondary display 6 Main display 7 Symbols f...

Page 6: ...M CFM and atmospheric pressure The key is used inside the programming as well see 4 6 Æ Press and hold the key to disable the function Auto power OFF The symbol disappears The function is automatically activated at every restart The key is not active when programming the instrument selecting measuring unit and recalling data to display 4 3 4 MAX MIN key By pushing MAX MIN key the parameter s maxim...

Page 7: ...ts to activate disable the automatic shutdown of display backlight see 4 4 1 4 3 7 SET key The key SET has a dual function Æ Just press to activate or deactivate display backlight SET Æ Press and hold to enter the set up area for volumetric flow measurement Backlight and memory cancellation 4 3 8 Check of displayed symbols as well as Firmware version When the instrument is off press and hold the k...

Page 8: ...ion and quit the mode 4 4 2 Change of measuring unit The instrument permits to change the measuring unit on both main display and secondary display when measuring press the arrow keys S or T to go from one display to the other Act as follows 1 Press and hold the key UNIT The measuring unit flashes on main display 2 Press again and hold the key UNIT The measuring unit flashes on secondary display 3...

Page 9: ...ng the key 3 Set the desired measuring unit relative to measurement of air speed and air temperature humidity see 4 4 2 4 Place the external probe parallel to air flow in the direction indicated by the arrow on its top see Fig 3 5 The value of air speed is indicated on main display 6 The value of air temperature humidity measured by the sensor of the external probe see Fig 1 part 12 is shown on se...

Page 10: ...2 0 096m2 or 16 15ft2 1 03ft2 8 Press the key UNIT to confirm the area value 9 Select the measuring unit CMM or CFM on secondary display see 4 4 2 10 Place the external probe parallel to air flow in the direction indicated by the arrow on its top see Fig 3 11 The value of air speed is shown on the instrument s main display 12 The value of air flow is shown on the instrument s secondary display 13 ...

Page 11: ...old the key HOLD RECALL 2 The instrument displays the messages Recall Memory and the result value along with the memory location on secondary display 3 Press the arrow keys S or T to increase or decrease the number of memory location 4 Press and hold the key HOLD RECALL to quit the mode 4 10 CANCELLATION OF INTERNAL MEMORY 1 Press and hold the key SET to enter the setting mode 2 Use the arrow keys...

Page 12: ...ttery CAUTION Only expert and trained technicians must perform this operation Remove all the probes from the devices under test before replacing the battery 1 Switch OFF the instrument 2 Remove the temperature probe 3 Remove the battery cover 4 Carefully remove the battery from the battery fastener 5 Set the new battery into battery fastener and return it to the battery case 6 Replace the battery ...

Page 13: ...1 2 rdg 40 Beaufort 1 10 Airflow measurement with external probe Meas units Range Resolution Accuracy CMM 0 9999 1 CFM Air humidity measurement with internal sensor Meas units Range Resolution Accuracy RH 20 80 0 1 3 5 RH 20 80 5 RH Air temperature measurement with internal sensor Meas units Range Resolution Accuracy C 20 60 0 1 1 C F 4 140 1 8 F Atmospheric pressure measurement with internal sens...

Page 14: ... Battery life about 100 hours Auto power off after 15 minutes of idleness Display Main display 4 LCD decimal point and backlight Secondary display 6 LCD decimal point and backlight Memory max 99 locations 6 2 ENVIRONMENTAL CONDITIONS 6 2 1 Climatic conditions Reference temperature 23 C 5 C 73 F 41 F Operating temperature 5 C 40 C 41 F 104 F Operating humidity 80 RH Storage temperature 10 C 50 C 14...

Page 15: ...due to improper packaging Faults due to servicing carried out by a person not approved by the company Faults due to modifications made without explicit authorization of our technical department Faults due to adaptation to a particular application not provided for by the definition of the equipment or by the instruction manual The contents of this manual cannot be reproduced in any form without our...

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