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Contrec 102D, Manual

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Contrec 102D Manual Download Page 26

22   Flowmeter Input 

 

MAN102D-V1.8 

4.  Reed Switch - External DC Power 
 

With 150

A internal pull up current 

 
 
 
 
 
 
 
 
 
 

Note:    For  a  switch  or  reed  input  with  contact  bounce  link  DBH  can  be 
switched  "on".    This  will  eliminate  the  effect  of  switch  bounce  while  limiting 
the input frequency to 200Hz. 

 
 
5.  Coils 
 
 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 

Note:  If the input has a very high impedance, 

 

the following link settings should be used: 

 

 

 
 
 

Link Settings 

 

 

 
825R input impedance 
 
eg. Millivolt signal from 
paddlewheel 
or turbine (15mV P-P 
minimum). 

Link Settings 

FR + 
 
FR -  

FR + 
 
FR -  

FR + 
 
 
 
FR -  

Summary of Contents for 102D

Page 1: ...MAN102D V1 8 FIELD MOUNTED RATE TOTALISER MODEL 102D APRIL 2019...

Page 2: ...tal Conversion 9 3 6 Frequency Cutoff 10 4 Programming 11 4 1 Program Steps 12 5 Example 16 6 Power 17 7 Flowmeter Input 18 8 Installation 23 8 1 Wall Mounting 23 8 2 Removing the Front Panel 24 8 3 T...

Page 3: ...MAN102D V1 8...

Page 4: ......

Page 5: ...mable from the front panel the user can program scaling factors decimal point positions filter constants and timebase The Model 102D Rate Totaliser conforms to the EMC Directive of the Council of Euro...

Page 6: ...ulses gallon is programmable in the range 0 000001 to 999 999 Decimal Points Decimal point positions are fully programmable for both rate and total Timebase Rate can be displayed in units per second m...

Page 7: ...deep cable glands not included Protection Sealed to Nema 4X or IP67 standards Cable Entry By cable glands Wall Mounting Universal mounting bracket supplied as standard Pipe Mounting A galvanised metal...

Page 8: ...olatile memory and are retained for at least 10 years in the event of a power loss 3 1 DISPLAY The Model 102D displays Rate Resettable Total Accumulated Total Both the Rate and Resettable Total are di...

Page 9: ...can be entered by simultaneously pressing all 3 front panel keys The tests are as follows Low Test N A High Test N A Display Test By pressing the PROGRAM key all segments of the display will flash To...

Page 10: ...ular application Values from 1 to 99 can be programmed where 1 corresponds to no filtering and 99 corresponds to heavy filtering Such flexibility in filtering means that highly accurate and stable rea...

Page 11: ...8 Filter Factor vs Time to Reach New Reading for a step change in input signal 0 20 40 60 80 100 120 0 10 20 30 40 50 60 70 80 90 100 Filter Factor Time to Reach of New Reading seconds 90 of New Read...

Page 12: ...urs and 86 400 for days S is the scaling factor pulses unit volume The scaling factor S is equal to the K factor of the flowmeter expressed in pulses per unit volume The K factor is flowmeter dependan...

Page 13: ...cumulated Example If the Rate is required in gallons minute 1 The Scaling Factor would be programmed as pulses per gallon 2 The Timebase would be programmed as minutes If the Totals are required in ba...

Page 14: ...ess the flowmeter in use has a lower frequency Note that a low cutoff frequency will result in a correspondingly low response of flow rate update For example if the cutoff is set to 0 01Hz the 102D wi...

Page 15: ...are used to change and increment the flashing digits Note that only flashing digits can be changed Up to nineteen CAL steps are accessible depending on which options are installed The CAL number is d...

Page 16: ...es gallon etc The scaling factor can be programmed in the range of 0 000001 999 999 See Section 3 4 CAL 3 Cutoff Frequency This determines the cutoff frequency in the range of 0 01 0 99Hz The default...

Page 17: ...second minute hour or day 0 second 1 minute 2 hour 3 day CAL 6 Filter The filter constant for filtering the input signal 1 No filtering to 99 Very heavy filtering CAL 7 Decimal Point for Total Display...

Page 18: ...to be displayed in one engineering unit and the totals to be displayed in another engineering unit The total conversion factor can be programmed in the range of 0 000001 999 999 Set to 1 000 if total...

Page 19: ...per the table below Input points are entered in ascending order INP 01 Input Frequency 01 whole number INP 00 Input Frequency 01 digits after decimal point OUT 01 Scaling Factor 01 whole number OUT 00...

Page 20: ...ng side up The following values are then entered Step Value of Parameter Description CAL00 0 No Pulse Output CAL01 00020 Scaling Factor whole numbers CAL02 5380 Scaling Factor decimals CAL03 0 25 Cuto...

Page 21: ...BATTERY POWERED The instrument uses a lithium battery for powering the display No external power supply is required The two Lithium cells are 3 6V AA types e g TADIRAN SL360 S SAFT LS14500EX Note the...

Page 22: ...s Open collector outputs Reed switches Logic signals Two wire proximity switches The following pages give examples of interconnection to various signal outputs A circuit diagram of the input is also p...

Page 23: ...not installed Ipull up 15 uA PULSE link no external power Ipull up 150 uA PULSE link external power SIMPLIFIED FREQUENCY INPUT CIRCUIT 8 7 7 5 6 1 3V 100K COIL LINK 1 0 1uF 0 01uF DBH DBL 825R NPS LI...

Page 24: ...nternal pull up current Note For a switch or reed input with contact bounce link DBL can be switched on This will eliminate the effect of switch bounce while limiting the input frequency to 200Hz Link...

Page 25: ...Installation 21 MAN102D V1 8...

Page 26: ...ce link DBH can be switched on This will eliminate the effect of switch bounce while limiting the input frequency to 200Hz 5 Coils Note If the input has a very high impedance the following link settin...

Page 27: ...et is supplied with each instrument Round head screws should be used to attach the bracket to the wall countersunk screws should not be used The bracket is mounted first with the tray section at the b...

Page 28: ...e dark plastic strip by levering a screwdriver under one end 2 Undo the screws retaining the front Do not remove the screws they are retained by O rings 3 Remove the front panel from the housing To re...

Page 29: ...trast via a small potentiometer on the board The Display Contrast is shown below and this can be adjusted for optimum contrast Adjacent to this control is a RESET switch which can be used to reset the...

Page 30: ...y in order to comply with the requirements for Electromagnetic Compatibility as per EMC Directive 2014 30 EU of the Council of the European Community 8 5 MAINTENANCE All printed circuit boards must be...

Page 31: ...her house hold waste you are preserving natural resources and reducing waste sent to landfill and incinerators Remove batteries and dispose of separately see Battery Disposal below before disposal of...

Page 32: ...Flow Rate 8 Frequency Cutoff 10 I Input Signal 19 Installation 23 M Model Number 1 O Operating Temperature 3 Operation 2 P Power 18 Programming 11 R Rate 2 Remote Switches 26 Removing the Front Panel...

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