Hach sension8 User manual
Cat. No. 54550-18
Dissolved Oxygen Meter
© Hach Company, 1999. All rights reserved. Printed in the U.S.A. ap/dk 9/99 1ed
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TABLE OF CONTENTS
SAFETY PRECAUTIONS ....................................................................................................... 7
SPECIFICATIONS.................................................................................................................... 9
OPERATION........................................................................................................................11
SECTION 1 INTRODUCTION...................................................................................... 13
1.1 Unpacking the Instrument................................................................................................. 14
1.1.1 Standard Accessories............................................................................................... 14
1.1.2 Optional Accessories............................................................................................... 14
1.2 Keypad Description........................................................................................................... 14
1.3 Display Fields and Icons ................................................................................................... 16
1.4 Maintenance ...................................................................................................................... 19
1.5 Audible Signals................................................................................................................. 19
SECTION 2 INSTRUMENT SETUP............................................................................ 21
2.1 Instrument Description...................................................................................................... 21
2.2 Power Connection ............................................................................................................. 21
2.3 Printer and Computer Connections................................................................................... 22
2.4 Turning the Meter On........................................................................................................ 22
SECTION 3 INSTRUMENT OPERATION................................................................ 23
3.1 Setup Menu ....................................................................................................................... 23
3.1.1 Turning Display Lock Off and On........................................................................... 23
3.1.2 Selecting Metric or English Units............................................................................ 23
3.1.3 Selecting Measurement Resolution ......................................................................... 24
3.1.4 Adjusting for Sample Salinity.................................................................................. 24
3.1.5 Changing the Barometric Pressure. ......................................................................... 25
3.1.6 Adjusting the Altitude.............................................................................................. 26
3.1.7 Setting the Time....................................................................................................... 27
3.1.8 Setting the Date........................................................................................................ 28
3.1.9 Setting the Year........................................................................................................ 28
3.1.10 Automatic Data Transfer ....................................................................................... 29
3.2 Calibrating the Meter ........................................................................................................ 30
3.3 DO Probe........................................................................................................................... 31
3.3.1 Probe Assembly....................................................................................................... 31
3.3.2 Probe Polarization.................................................................................................... 32
3.3.3 Zeroing the Probe .................................................................................................... 33
3.3.4 Calibration in Water Saturated Air .......................................................................... 34
3.3.5 Calibration to a Known Dissolved Oxygen Concentration ..................................... 35
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TABLE OF CONTENTS, continued
3.3.6 Calibrating a Sample to Read 100% Saturation...................................................... 37
3.3.7 Calibration Review.................................................................................................. 38
3.4 Measuring Dissolved Oxygen........................................................................................... 39
3.4.1 General Probe Operation......................................................................................... 39
3.4.2 Measurement........................................................................................................... 39
3.4.3 Probe Storage .......................................................................................................... 40
3.4.4 Maintenance............................................................................................................ 41
3.5 Using the BOD Accessory Kit.......................................................................................... 41
3.6 Making BOD Determinations........................................................................................... 42
3.7 Oxygen Utilization Rate (OUR) and Specific Oxygen Utilization Rate (SOUR) Tests... 42
SECTION 4 STORING AND RECALLING DATA.................................................. 45
4.1 Storing Measurements ...................................................................................................... 45
4.2 Recalling Stored Data....................................................................................................... 46
4.3 Erasing Data...................................................................................................................... 47
4.3.1 Erasing Single Data Points...................................................................................... 47
4.3.2 Erasing All Data Points........................................................................................... 47
SECTION 5 MAINTENANCE....................................................................................... 49
5.1 Cleaning the Probe............................................................................................................ 49
5.2 Meter Maintenance........................................................................................................... 49
SECTION 6 PRINTING AND DATA TRANSFER................................................... 51
6.1 Connecting to Printers/Computers.................................................................................... 51
6.1.1 Connection with the RS232 Cable.......................................................................... 51
6.1.2 Connecting to a Printer............................................................................................ 51
6.1.3 Connecting to a Personal Computer........................................................................ 53
6.2 Sending Data to Printers/Computers................................................................................. 55
6.2.1 Sending Currently Displayed Data.......................................................................... 55
6.2.2 Sending Recalled Data Points................................................................................. 55
6.2.3 Sending All Stored Data.......................................................................................... 55
6.2.4 Printed Data Format................................................................................................ 56
SECTION 7 DISSOLVED OXYGEN IN WATER..................................................... 57
SECTION 8 TROUBLESHOOTING............................................................................ 63
8.1 Error Codes....................................................................................................................... 63
8.2 Meter Service Request Questionnaire............................................................................... 63
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TABLE OF CONTENTS, continued
SECTION 9 REFERENCE TABLES............................................................................ 65
9.1 Salinity Correction Factors................................................................................................ 65
9.2 Barometric Pressure and Elevation ................................................................................... 66
9.3 Solubility of Oxygen in Water .......................................................................................... 67
9.4 Pressure Conversions......................................................................................................... 73
GENERAL INFORMATION...........................................................................................75
REPLACEMENT PARTS....................................................................................................... 77
HOW TO ORDER................................................................................................................... 78
REPAIR SERVICE.................................................................................................................. 79
WARRANTY .......................................................................................................................... 80
CERTIFICATION ...................................................................................................................81
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SPECIFICATIONS
Specifications subject to change without notice.
Oxygen Measurement:
Range 0-20 mg/L (ppm)
0-200% sat.
Accuracy ± 1% full scale
Temperature 0-50 °C
Resolution:
Oxygen Concentration 0.01 or 0.1 ppm (mg/L)
%Saturation 0.1%
Temperature 0.1 °C
Display: Custom LCD
Inputs: Outputs:
5-pin shielded RS232C
circular connector
Power Requirements: 6–12 Vdc; use either Hach-supplied 115 or 230V, 50/60 Hz external
power supply or a customer-provided supply with 50 mA output, 5.5-mm power plug with a
2.5 mm center post opening
Installation Category: II
Instrument drift: <1%/day
Environmental requirements: 5 to 50 °C at 85% relative humidity, non-condensing
Meter dimensions: 15x25.4x8.37cm(10.15x6x3.5inches)
Enclosure: Water resistant (IP32), chemical resistant
Probe Dimensions (Model 50180):
Probe Length 150 mm
Body Diameter 12 mm
Cap 15 mm dia. x 35 mm
Cable Length 1, 3, or 15 meters
Connector Fisher
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Table of contents
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