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19

7.

 

LOW

 

BATTERY

 

WARNING

 

AND

 

BATTERY

 

REPLACEMENT 

 
The battery symbol 

 

on the display constantly shows the battery charge status. To the extent that batteries have 
discharged, the symbol "empties". When the charge decreases still further it starts blinking. 

 

In this case, batteries should be replaced as soon as possible. 
If you continue to use it, the instrument can no longer ensure correct measurement. The memory 
data are maintained. 

If the battery charge level is insufficient, the following message appears when you turn the 
instrument on: 

BATT TOO LOW 

CHNG NOW

 

The instrument issues a long beep and turns off. In this case, replace the batteries in order to 
turn the instrument back on.

 

 

To replace the batteries, proceed as follows: 
1.

 

switch the instrument off; 

2.

 

unscrew the battery cover counter clockwise; 

3.

 

replace the batteries (3 1.5V alkaline batteries - type AA); 

4.

 

screw the cover on clockwise.  

 

Malfunctioning upon turning on after battery replacement 

After replacing the batteries, the instrument may not restart correctly; in this case, repeat the 
operation.  
After disconnecting the batteries, wait a few minutes in order to allow circuit condensers to 
discharge completely; then reinsert the batteries. 

 

7.1

 

W

ARNING ABOUT BATTERY USE

 

 

Batteries should be removed when the instrument is not used for an extended time. 

 

Flat batteries must be replaced immediately. 

 

Avoid batteries leaking. 

 

Always use good quality leakproof alkaline batteries. Sometimes on the market, it is 

possible to find new batteries with an insufficient charge capacity. 

 
 

Summary of Contents for HD2301.0R

Page 1: ...written in this manual and the instrument that you have purchased We cannot entirely exclude errors in the manual for which we apologize The data figures and descriptions contained in this manual can...

Page 2: ...2 Thermohygrometer HD2301 0R...

Page 3: ...measurement display during normal operation in the menu increases the current value 8 UNIT MENU key it allows selection of the unit of measurement when pressed together with the DATA key it allows to...

Page 4: ...4 wire Pt100 sensors 16 5 WARNINGS 17 6 INSTRUMENT SIGNALS AND FAULTS 18 7 LOW BATTERY WARNING AND BATTERY REPLACEMENT 19 7 1 Warning about battery use 19 8 INSTRUMENT STORAGE 20 9 NOTES ABOUT WORKING...

Page 5: ...test Le misure effettuate presso un Laboratorio di Taratura Accredia sono garantite da una catena di riferibilit ininterrotta che ha origine dalla taratura dei campioni di prima linea del Laboratorio...

Page 6: ...d the instrument calculates and displays the following data absolute humidity dew point partial vapour pressure The probes are fitted with the automatic detection SICRAM module with the factory calibr...

Page 7: ...ready for normal measurement The following is displayed MIN cm min s 2 3 m m k AUTO OFF the AutoPowerOff function can be disabled by simultaneously pressing this key and the HOLD key when turning the...

Page 8: ...alues remain in the memory until the instrument is on even after exiting the DATA calculation function When the instrument is off the previously memorized data are cleared Upon turning on the instrume...

Page 9: ...by pressing the UNIT key or wait for the unit of measurement to stop blinking about 15 seconds timeout MENU in the menu two items can be set see chapter 3 1 Probe type 2 Probe calibration the menu is...

Page 10: ...etected by the instrument upon turning on The type of probe is configured by the instrument and cannot be modified by the user If the direct 4 wire Pt100 probes and the Pt1000 probes that are not manu...

Page 11: ...ecessary to turn it off and on 4 1 MEASUREMENT OF RELATIVE HUMIDITY The humidity probes are humidity and temperature combined probes the humidity sensor is a capacitative type sensor while according t...

Page 12: ...o types of thread M24x1 5 and M12x1 so use the appropriate one 3 Open the cap for the 75 RH saturated solution 4 Should there be any drops of solution inside the measuring chamber dry them with some b...

Page 13: ...there is no more salt inside between the two walls but only a thick liquid in this case the chamber cannot reach its saturation anymore For the saturated solutions at 75 RH check that the salt is not...

Page 14: ...en measuring the temperature on frozen blocks it is convenient to use a mechanical tool to bore a cavity in which to insert the tip probe In order to perform a correct contact measurement the measurem...

Page 15: ...probe cable through the fairlead and gasket 6 Weld the wires as shown in the table Sensor TP47 Board connection Jumper to close Pt100 4 wires 4 JP4 3 JP3 1 JP1 2 JP2 Pt100 4 wires None Pt1000 2 wires...

Page 16: ...ve to be soldered as indicated in the figure on the left In order to use this type of probe it is necessary to set up the menu item Probe Type as described at page 10 The P100 probe is recognized upon...

Page 17: ...oid violent blows or thermal shocks to Platinum temperature probes as this could cause irreparable damage 9 To obtain reliable measurements temperature variations that are too rapid must be avoided 10...

Page 18: ...the instrument but is disconnected At the same time an intermittent beep is issued FUNC CLRD max min and average values cleared NEW PROBE DET This message appears when a probe is inserted into a func...

Page 19: ...nstrument back on To replace the batteries proceed as follows 1 switch the instrument off 2 unscrew the battery cover counter clockwise 3 replace the batteries 3 1 5V alkaline batteries type AA 4 scre...

Page 20: ...ing and operational safety of the measuring system can only be guaranteed if the generally applicable safety measures and the specific safety instructions in this operating manual are followed during...

Page 21: ...Pa Td C F Measurement of relative humidity by Instrument Measurement range 0 100 RH Resolution 0 1 RH Accuracy 0 1 RH Drift after 1 year 0 1 RH year Measurement of temperature by Instrument Pt100 and...

Page 22: ...250 C 0 3 C TP472I 5 Immersion 50 C 400 C 0 3 C 50 C 350 C 0 4 C 350 C 400 C TP472I 10 Immersion 50 C 400 C 0 3 C 50 C 350 C 0 4 C 350 C 400 C TP49A O Immersion 70 C 250 C 0 25 C TP49AC O Contact 70...

Page 23: ...stics Relative humidity Sensor Capacitive Temperature drift 20 C max 0 02 RH C Response time RH at constant temperature 10sec 10 80 RH air speed 2m s Temperature with sensor Pt100 Temperature drift 20...

Page 24: ...m Cable length 2 m TP472I 5 Pt100 sensor immersion probe Stem 6 mm length 500 mm Cable length 2 m TP472I 10 Pt100 sensor immersion probe Stem 6 mm length 1000 mm Cable length 2 m TP49A O Pt100 sensor...

Page 25: ...mm Connection cable length 2 m HP475ACR Combined probe RH and temperature Connection cable length 2 m Handle 26x110mm Stainless steel stem 12x560mm Point 14x75mm HP475AC1R Combined probe RH and temper...

Page 26: ...M12 1 HD33 Saturated solution at 33 0 RH 20 C for calibration of relative humidity probes ring M12 1 HD75 Saturated solution at 75 4 RH 20 C for calibration of relative humidity probes ring M12 1 Pro...

Page 27: ...27...

Page 28: ...the European users of electrical and electronic equipment can return it to the dealer or manufacturer upon purchase of a new one The illegal disposal of electrical and electronic equipment is punishe...

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