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S825/1 

 
5.  When filling the fuel line, introduce the liquid slowly so as not to force air 

through the meter at high rate. 

6.  The  HO25/40/50APM  and  HO25SPM  have  a  twin  passive,  reed  switch 

pulse  outputs  rated  at  5-36V,  15mA  max  with  a  90°  signal  phase  shift.  
One  reed  switch  is  connected  across  the  red  and  yellow  wires  with  the 
other connected across the blue and black wires. 

 

 

 

OPERATING INSTRUCTIONS 

  

HO25/40/50AME & HO25SME 

 

1.  Activate  the  display  -  Prior  to  running  fuel  through  the  meter  press  the 

ON/CLEAN

  button  to  activate  the  display.    If  no  fuel  is  drawn  for  one 

minute the display will de-active. 

2.  Reset  display  -  With  the  display  activated  press  the 

ON/CLEAN

  button 

again to reset the main volume display. 

3.  Batch  Total  –  This  is  shown  at  the  bottom  of  the  display  in  the  normal 

operation mode.  To reset the batch total press the 

TOTAL

 button twice 

,so that the batch total is flashing, followed by the 

ON/CLEAN

 button. 

4.  Totalizer  -  To  view  the  ongoing  (non-resettable)  totalizer  press  the 

TOTAL

  button.  Press  the 

ON/CLEAN

  button  to  return  to  the  previous 

normal operation mode with the batch total showing.  

5.  Calibration  –  The  calibration  mode  is  accessed by  pressing  the 

SETUP

 

button.    The  calibration  factor  and  the  units  of  measure  are  then 
displayed  with  the  calibration  factor  which  can  be  adjusted  by  pressing 
the 

SETUP

 button until the digit to be changed is flashes.  This digit can 

then be increased by pressing the 

ON/CLEAN

 button and decreased by 

pressing the 

TOTAL

 button.  Each single unit of increase or decrease in 

the  calibration  factor  equates  to  a  percentage  of  liquid  volume 
adjustment.    For  the  HO25AME  the  percentage  is  0.07%,  for  the 
HO40AME 0.03% and for the HO50AME 0.01%.  An increase of one unit 
will  result  in  a  decrease  of  0.07%/0.03%/0.01%  in  the  volume  of  liquid 
dispensed  for  the  volume  displayed  on  the  meter  and  a  decrease  will 
have the opposite effect so if, during a measure check, the display of a 
HO25AME  shows  20  litres  and  the  volume  in  the  test  measure  is  20.1 
litres  increase  the  calibration  factor  by  7  to  bring  the  accuracy  to  within 
0.05%.    Once  the  calibration  factor  has  been  set  and  no  more  buttons 
are  pressed  the  meter  will  return  to  the  normal  operation  mode  after  3 
seconds and retain the changes made.   

6.  Unit of measure – This can be changed by accessing the calibration 

 

Summary of Contents for HO Series

Page 1: ... HO 40 A PM HO 50 A PM HO 25 S MM HO 25 S ME HO 25 S PM Please read carefully before commencing installation Registered Office HYTEK GB LIMITED Delta House Green Street Elsenham Bishop s Stortford CM22 6DS UK Registered in England No 1915382 Tel 44 0 1279 815 600 Fax 44 0 1279 812 978 email info hytekgb com Web www hytekgb com HO 25 A MM HO 40 A ME HO 25 A PM ...

Page 2: ...overnment or local authorities IMPORTANT WARNING NOTES 1 This meter is only be used to measure diesel or liquids classed as cat 3 in accordance with European Regulation No 1272 2008 It must not be used to measure petrol or any other liquid with a similar flash point 2 This product must not be used if it is damaged or leaking located in a fully enclosed environment or not provided with adequate ven...

Page 3: ... Aluminium Viton 23 250 0 5 257 18 1 1 2 F BSPP N A Reed 32 5P L HO50APM 2 Pulse Meter Aluminium Viton 30 300 0 5 257 18 2 F BSPP N A Reed 16P L HO25SMM 1 Mechanical Meter Stainless Steel Viton 20 200 0 5 485 34 1 F BSPP 4 digit 6 digit N A HO25SME 1 Electronic Meter Stainless Steel Viton 20 200 0 5 485 34 1 F BSPP 5 digit 7 digit N A HO25SPM 1 Pulse Meter Stainless Steel Viton 20 200 0 5 485 34 1...

Page 4: ...ormal operation mode with the batch total showing 5 Calibration The calibration mode is accessed by pressing the SETUP button The calibration factor and the units of measure are then displayed with the calibration factor which can be adjusted by pressing the SETUP button until the digit to be changed is flashes This digit can then be increased by pressing the ON CLEAN button and decreased by press...

Page 5: ...e by pressing the ON CLEAN or TOTAL button Once the unit of measure has been set and no more buttons are pressed the meter will return to the normal operation mode after 3 seconds and retain the changes made HO25 40 50AMM HO25SMM 1 Resettable totalizer To reset the lower resettable totalizer press the reset button 2 Calibration The calibration of these meters is factory set and cannot be adjusted ...

Page 6: ...s for maximum viscosity Meter reading inaccurate a Fluid rate is too high or too low b Fluid is too viscous c Excess wear caused by incorrect installation See specifications for minimum and maximum flow rates Bleed air from system Check meter body and rotors Replace as required Refer to installation instructions Fluid flows but no reading on meter a Bevel gear is loose on shaft b Rotor drive gear ...

Page 7: ...ription Qty No Description Qty 1 Measuring Assy 1 7 Rotor Oval Gear 1 1 2 Upper Cover Gland 1 8 Rotor Oval Gear Shaft 1 3 O ring Viton 1 9 Rotor Oval Gear Shaft Short 1 4 Upper Cover 1 10 Rotor Oval Gear 2 1 5 O ring Viton 1 11 Bolt 4 6 Meter Body 1 ...

Page 8: ...nity for industrial environments 2006 42 EC Machinery Directive 97 23 EC Pressure Equipment Directive 2014 68 EU Pressure Equipment Directive effective date 19th July 2016 2012 19 EU Waste Electrical Electronic Equipment Regulations 2011 65 EU Restriction of Hazardous Substances Directive RoHS2 Declaration Number EU129 On behalf of the above named company I declare under our sole responsibility th...

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