Delta DO 9704 manual Flow Rate Measurements

Page 48

ENGLISH

FLOW RATE MEASUREMENTS

A selection resistance sets the conversion factor of the connected turbine.

The instrument automatically recognises 5 fixed flow rate values plus a sixth which may be configu- red by the user.

FLOW RATE PROBES

	Measuring range	Selection	Output	Indication
		resistance kΩ	frequency PPL	lt/min.

LT 5	5 l/min.	90.9	5	5
(LT10)*		95.3	5	20
LT20	20 l/min.
(LT50)*		100	0.5	125
LT125	125 l/min.
(LT250)*		105	0.1	400
(LT300)*
LT400	400 l/min.
LT500	500 l/min.	110	0.04	500
LT750	750 l/min.	115	0.04	750

LT configurable	2000 l/max	121	configurable	PPL

*The instrument can read a reduced measuring range, it has the same selection resistance.

The connection cable of the configurable turbine will end with a DIN 8-pole connector; connect a 121 kΩ resistance between pin 3 and pin 7.

1

2

3

4

5

6

7

8

6

7

13

8

45

2

N.C.	N.C.	Select.		N.C.	N.C.
N.C.	N.C.	Select.		N.C.	N.C.

		R.

*

Active probe for measuring flow rate with a turbine 2 to 2000 litres/minute.

*A coil which generates impulses with a minimum of 100 mV p-p is connected to pins 4 and 6.

112

Image 48

Contents Instructions Manual Page Pressure and Temperature DATA-LOGGER English Introduction Keyboard KEY NumbersFunction Description Simbols LIT BesidesNumbers RELSimbols LIT Besides Function Numbers Description Tom of the displaySerial Output P0+ Press the Prog key to move on to step P1300 Baud 600 BaudP1+ = data dump P1+ StorageHours minutes Seconds This parameter is used for the fol- lowing two functionsFunction P3+ P4+ = set yearP5+ = set month P6+ = set day P7+ = set hours P8+ = set minutes P9+ Self cut-outP10+ To stop storage, press the Enter keyP10 Complete printing Reduced printingP11+ P11Data Call + Start-StopOperating mode When this operativeKEY Simbols LIT Besides Ches itself off againIf the battery symbol does not fla Simbols LIT Besides Function Numbers Description EnterRestart it More than 30,000 acquisitionsAfter having taken note HOW to Measure Probe ConnectionVarious operations Temperature Measurement Method of Using the Instrument and WarningsInstrument Signals and Malfunctions ErrFUL LOULOW Battery Warning and Battery Replacement Storage of the Instrument Serial Interface RS 232CCommand Type Reply Parity None Bit Stop bit Protocol Xon/XoffType of terminal Dumping data from the memoryMemory clear Diagram do PrinterExample of a Report Printed by the Instrument English Hardware connection Software connection with WindowsOK to confirm the setting one click Mark local Echo one click 100 101 Switch on the measuring instrument 102OK to confirm Cancel in the next window 103Parity None 104105 106 107 108 109 To end receiving data from an instrument Select END from the pull-down sub-menu one clickTo quit running the Hyper Terminal 110Calibrating the Instrument do Vdc=465.5Flow Rate Measurements Probe connection diagram Instrument do Connection of Probes to the Pressure Gauge Data Logger do113 SEL R 100 105 110 115Turbine probe for measuring flow rate Between 4Classification of Pressure Measurements GaugeConversion Factors and Tables Psi = Pa Psi = kPa= 3,386 x 103 Pa = 2,491 x 102 Pa118 Instrument Technical Data Connector DIN 45326 8-poleWeight / dimensions 320 gr. / 215x73x38 mm Minimum, Mean, Relative, A-B differential120 121 Order Codes Guarantee Examples of USE of the Keyboard Serial lineDisplay blocked 124Pressing Data Call repeatedly gives 125Instrument programming Sets year Sets daySets hour 127Enables self cut-out + Normal operatingDate and time Data printing is reduced 128Activation or disactivation of the serial output Activation or disactivation of the Record functionFunction Serial output activeActivation and disactivation of the storage function 130Index 131132 Safety EN61000-4-2, EN61010-1 level