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Operating Instruction

 

Q5.25.45

 

TLT

 

 

Page

 6 / 18 

Draft created/changed: 31.01.03/TT 

Document created/changed: 03.08.2012 / Rea 

Revision: - 

Revision: - 

Draft released: 18.02.03/DEL 

Document released: 03.08.2012 / Rea

 

Jede unerlaubte Verwendung ist strafbar / Any unpermitted use is subject to prosecution.

 

 

 

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The Luwa 

HTT-V

S

 transmitter is a rugged precision measuring instrument for the use in HVAC control and regu-

lating  systems.  It  continuously  measures  up  to  three  times  per  second,  the  relative  humidity  and  the  actual  air 
temperature  and  shows  the  measured  value  on  a  large  LCD  display  and  simultaneously  on  two  high-precision 
analogue outputs.  
 

 

Special features:  

 

• 

Large 

LCD

 for a simultaneous display of %RH and temperature  

• 

Easy and intuitive 

menu navigation

 (3 keys)  

• 

2 analogue outputs 

for measured value %RH und temperature (U or I), freely scalable  

• 

Possibility of 

adjustment 

von %HR and temperature (3 points %HR  / 1 point temperature)  

• 

Average value display (1/4: 1 : 3 h display for 3 seconds)  

• 

Password 

protection for all settings  

• 

Changeover of Aout

 U / I 

and the display 

°C/°F 

 

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Permanent online monitoring of all functions

  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

  
 
 

                         Luwa HTT-V-M                                                   Luwa HTT-V-S 
 
 
 

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The HTT-V S/M contains: 
• RH/T measuring instrument including probe in room – duct version 
• Stain relief plate including screw set and 4 spacers 
• Instruction manual 
• Assembly instructions 
 

Check the completeness of the box contents. 
Incomplete deliveries can be completed immediately by the Luwa Air Engineering AG representation. 
 
 
 
 
 
 

Summary of Contents for 28896

Page 1: ...ged 31 01 03 TT Document created changed 03 08 2012 Rea Revision Revision Draft released 18 02 03 DEL Document released 03 08 2012 Rea Jede unerlaubte Verwendung ist strafbar Any unpermitted use is su...

Page 2: ...ns s 8 8 3 3 S SA AF FE ET TY Y 8 8 4 4 I IN NS ST TA AL LL LA AT TI IO ON N 8 8 5 5 M MO OU UN NT TI IN NG G 9 9 5 5 1 1 O Ou ut ts si id de e m me ea as su ur re em me en nt t 1 10 0 6 6 S ST TA AR...

Page 3: ...e er ra at tu ur re e t tr ra an ns sm mi it tt te er r AN 28896 Humidity temperature transmitter type DigiControl HTT V S room with 24 VAC VDC power supply with LCD display with standard polyformalde...

Page 4: ...use is subject to prosecution 1 1 2 2 A Ac cc ce es ss so or ri ie es s a an nd d s sp pa ar re e p pa ar rt ts s AN 28928 AN 28929 Sal_SC humidity set 58 75 Sal_SC humidity 90 AN 29025 AN 28904 Sal_S...

Page 5: ...o prosecution AN 28902 AN 29121 Stainless steel probe duct HTT V M1 length of cable 3 m To use with high humidity 85 Stainless steel probe duct HTT V M2 length of cable 10 m To use with high humidity...

Page 6: ...ogue outputs Special features Large LCD for a simultaneous display of RH and temperature Easy and intuitive menu navigation 3 keys 2 analogue outputs for measured value RH und temperature U or I freel...

Page 7: ...temperature humidity 0 1 C 1 0 RH Measurement interval 330 500 ms Temperature effect on measurement typical 0 06 RH C Resolution of analog outputs typical 5 mV 5uA Accuracy of analog outputs typical 0...

Page 8: ...alfunctions or errors can cause large material damage or personal injury additional precautions and external safety measures must be taken so that in case of an error defined operating conditions are...

Page 9: ...ls or drilled the appropriate holes in the wall the bottom can be screwed 6 Now you can screw the cables on the connector with the ferrule Please consider for this the electric diagram of the designer...

Page 10: ...rt the system check the correct supply wiring and the configuration of the analogue outputs U I switch Close the cover of the HTT V before the power supply is switched on Check the fuse protection on...

Page 11: ...strafbar Any unpermitted use is subject to prosecution 6 6 1 1 C Co on nn ne ec ct ti io on ns s a e Analogue outputs b Power supply Connector for standard humidi ty probe c f Probe connection room d...

Page 12: ...rical connections This connection must be made by a qualified technician To make the connection the transmitter must not be energized Power suppy connection Before making the connection you must first...

Page 13: ...ptions for the application have to be configured For this the instrument has an intuitive menu guidance which is started by the key Enter Menu keys Operation ENTER ENTER Menu and submenus Press 2 seco...

Page 14: ...he probe after having inspected visually and shaken the SAL SC Make sure that the cylinder is close to the probe Wait at least 30 minutes necessary for the balancing of the moisture inside the cylinde...

Page 15: ...alues for Range L and Range H at the Transmitter HTT V for example 0 RH RLs and 100 RH RHs Set the desired output range 0 2 10V 0 4 20mA Set the control system in the same way 7 7 2 Measurement Enter...

Page 16: ...e temperature and humidity can be overridden This override is active for 10 minutes then the system displays the current actual value of the temperature and humidity 7 7 1 11 1 P Pa as ss sw wo or rd...

Page 17: ...e probe element SPACE CAL points are too close 2 0 RH RANGE Range exceeded Power Operating voltage outside the limits FATAL Fatal error DATA Not enough data for Moving Average Error messages A serious...

Page 18: ...18 Draft created changed 31 01 03 TT Document created changed 03 08 2012 Rea Revision Revision Draft released 18 02 03 DEL Document released 03 08 2012 Rea Jede unerlaubte Verwendung ist strafbar Any...

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