Hach MP-4 User manual
DOC022.53.80072
MP Series Portable Meters
USER MANUAL
October 2009, Edition 1
© Hach Company, 2009. All rights reserved. Printed in the U.S.A. hh/dk
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Table of contents
Section 1 Specifications .................................................................................. 7
Section 2 General information ..................................................................... 11
2.1 Safety information ..................................................................................... 11
2.1.1 Use of hazard information .............................................................. 11
2.1.2 Precautionary labels ....................................................................... 11
2.2 General product information ..................................................................... 12
2.2.1 Overview ......................................................................................... 12
2.2.2 Features common to all models ...................................................... 12
2.2.3 User mode features ....................................................................... 12
2.3 Conductivity and pH/ORP sensor cups ..................................................... 13
Section 3 Operation ........................................................................................ 15
3.1 System startup .......................................................................................... 15
3.2 Display description .................................................................................... 15
3.3 Keypad description ................................................................................... 16
3.4 Take a measurement ................................................................................ 17
3.5 Measure conductivity ................................................................................ 17
3.6 Measure resistivity (MP-4 and MP-6 models) ........................................... 17
3.7 Measure mineral/salt (MP-6p model only) ................................................ 18
3.8 Measure TDS ............................................................................................ 18
3.9 Measure ORP/Redox (MP-6 and MP-6p models) ..................................... 18
3.10 Measure pH (MP-6 and MP-6p models) ................................................. 18
3.11 Select a solution ..................................................................................... 19
3.11.1 Temperature compensation .......................................................... 19
3.12 Change the user-selected temperature compensation factor ................. 20
3.12.1 Disable temperature compensation ............................................. 20
3.13 Change the user-selected conductivity/TDS ratio ................................... 20
3.14 Settings ................................................................................................... 21
3.14.1 Store a value in the memory ......................................................... 21
3.14.2 View the memory recall ................................................................ 22
3.14.3 Clear all records ........................................................................... 22
3.15 Time and date ......................................................................................... 22
3.15.1 Set the time .................................................................................. 22
3.15.2 Set the date .................................................................................. 23
3.15.3 Set the date format ....................................................................... 24
3.16 Temperature format ................................................................................ 24
3.17 Return to factory settings ........................................................................ 25
3.18 Cell check ............................................................................................... 25
3.19 Auto off ................................................................................................... 26
3.20 User mode calibration LincTM function .................................................... 27
3.20.1 Calibrate meter for User mode ..................................................... 27
3.20.2 Set User mode calibration Linc ..................................................... 27
3.20.3 Cancel User mode calibration Linc ............................................... 28
3.21 Download stored data ............................................................................. 29
Section 4 Calibration ...................................................................................... 31
Table of contents
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4.1 Calibration intervals ...................................................................................31
4.2 Calibration limits ........................................................................................31
4.3 Calibration records ....................................................................................31
4.4 Calibrate the meter ....................................................................................31
4.5 Exit calibration mode .................................................................................32
4.6 Calibrate conductivity, mineral/salt or TDS ................................................32
4.7 Calibrate resistivity ....................................................................................33
4.8 Reset factory calibration—conductivity, mineral/salt or TDS .....................33
4.9 pH calibration .............................................................................................33
4.10 Set multiple point pH calibrations ............................................................34
4.11 ORP calibration .......................................................................................35
4.12 Temperature calibration ...........................................................................35
Section 5 Maintenance ...................................................................................37
5.1 Temperature extremes ..............................................................................37
5.2 Battery replacement ..................................................................................37
5.2.1 Maintain the conductivity cup ..........................................................38
5.2.2 Maintain the pH/ORP sensor cup ....................................................38
5.3 pH/ORP sensor replacement .....................................................................38
5.4 Clean the sensors ......................................................................................38
5.4.1 Clean the conductivity/resistivity/TDS sensor .................................38
5.4.2 Clean the pH/ORP sensor ...............................................................39
Section 6 Troubleshooting ............................................................................41
Section 7 Contact Information ......................................................................43
Section 8 Replacement parts and accessories ......................................45
8.1 Replacement parts ....................................................................................45
8.2 Accessories ...............................................................................................45
8.3 Consumables .............................................................................................45
8.4 Recommended cleaning consumables ......................................................46
Section 9 Limited Warranty ...........................................................................47
Appendix A Temperature compensation ..................................................49
A.1 Compensation to 25 ºC .............................................................................49
A.2 Changes in temperature compensation ....................................................49
A.3 Graph of comparative error .......................................................................50
A.4 Other solutions ..........................................................................................50
Appendix B Conductivity conversion .........................................................51
B.1 How conductivity conversion works ..........................................................51
B.2 Solution characteristics .............................................................................51
Appendix C Temperature compensation and TDS derivation ...........53
C.1 Conductivity characteristics ......................................................................53
C.2 Temperature compensation of unknown solutions ...................................53
C.2.1 Find temperature compensation by calculation ..............................53
C.2.2 Find temperature compensation by adjustment ..............................53
C.3 TDS ratio of unknown solutions ................................................................54
Table of contents
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Appendix D Additional information on pH and ORP (MP-6
and MP-6p models) ......................................................................................... 55
D.1 pH ............................................................................................................. 55
D.1.1 pH as an indicator .......................................................................... 55
D.1.2 pH units .......................................................................................... 55
D.1.3 pH sensor ....................................................................................... 55
D.1.4 Sources of error ............................................................................. 56
D.1.5 Temperature compensation ........................................................... 57
D.2 Oxidation Reduction Potential/Redox (ORP) .............................. 57
D.2.1 ORP as an indicator ....................................................................... 57
D.2.2 ORP units ....................................................................................... 57
D.2.3 ORP sensor ................................................................................... 57
D.2.4 Sources of error ............................................................................. 57
Table of contents
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Section 1 Specifications
Specifications are subject to change without notice.
General
Display 4-digit LCD
Dimensions (L x W x H) 196 x 68 x 64 mm (7.7 x 2.7 x 2.5 in.)
Weight 352 g (12.4 oz)
Case material VALOX®1
COND/RES/TDS cell material VALOX
COND/TDS electrodes (4) 316 stainless steel
COND/RES/TDS cell cup capacity 5 mL (0.2 oz)
pH /ORP sensor cup capacity 1.2 mL (0.04 oz)
Power 9V alkaline battery
Battery life >100 hours (5000 readings)
Operating/Storage Temperature 0 to 55 ºC (32 to 132 ºF)
Protection Ratings IP67/NEMA 6
Warranty
MP Series Meter Warranty: Two years from date
of shipment (see Section 9 on page 47)
pH/ORP Sensor Warranty: Six months from date
of shipment (see Section 9 on page 47)
Ranges
pH (MP-6 and MP-6p models) 0 to 14 pH
ORP (MP-6 and MP-6p models) ±999 mV
Conductivity
0 to 9999 µS/cm
10 to 200 mS/cm
in 5 autoranges
TDS
0 to 9999 ppm
10 to 200 ppt
in 5 autoranges
Mineral/Salt (MP-6p model only)
0 to 9999 ppm
10 to 200 ppt
in 5 autoranges
Resistivity (MP-6 and MP-6p models) 10 KΩto 30 MΩ
Temperature 0 to 71 ºC (32 to 160 ºF)
Specifications
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Resolution
pH ±0.01 pH
ORP ±1 mV
Conductivity
0.01 (<100 µS)
0.1 (<1000 µS)
1.0 (<10 mS)
0.01 (<100 mS)
0.1 (<200 mS)
TDS
0.01 (<100 ppm)
0.1 (<1000 ppm)
1.0 (<10 ppt)
0.01 (<100 ppt)
0.1 (<200 ppt)
Mineral/Salt
0.01 (<100 ppm)
0.1 (<1000 ppm)
1.0 (<10 ppt)
0.01 (<100 ppt)
0.1 (<200 ppt)
Resistivity
0.01 (<100 KΩ)
0.1 (<1000 KΩ)
0.1 (>1 MΩ)
Temperature 0.1 ºC/ºF
Accuracy
pH ±0.01 pH2
ORP ±1 mV
Conductivity ±1% of reading
TDS ±1% of reading
Mineral/salt ±1% of reading
Resistivity ±1% of reading
Temperature ±0.1 ºC
Auto temperature compensation
pH 0 to 71 ºC (32 to 160 ºF)
Conductivity 0 to 71 ºC (32 to 160 ºF)
TDS 0 to 71 ºC (32 to 160 ºF)
Mineral/Salt 0 to 71 ºC (32 to 160 ºF)
Resistivity 0 to 71 ºC (32 to 160 ºF)
Adjustable temperature compensation
Conductivity 0 to 9.99%/ºC
TDS 0 to 9.99%/ºC
Mineral/Salt 0 to 9.99%/ºC
Resistivity 0 to 9.99%/ºC
Specifications
9
COND/TDS ratios pre-programmed
Conductivity
KCl, NaCl, 442™3
TDS
Mineral/salt
Adjustable COND/TDS ratio factor
Conductivity
0.20 to 7.99TDS
Mineral/salt
1 Trademark of SABIC Innovative Plastics IP BV
2 ± 0.2 pH in presence of RF fields 3 V/m and >300 MHz.
3 Trademark of Myron L Company
Specifications
10
This manual suits for next models
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