Hach PHOSPHAX sigma High Range User manual

DOC273.98.90146
PHOSPHAX sigma High Range
Supplement to DOC023.98.90397
User manual
03/2017, Edition 3

3
Table of contents
English..................................................................................................................................................... 5
Deutsch.................................................................................................................................................. 15
英语......................................................................................................................................................... 25

4
Table of contents

English 5
Specifications
English
Specifications
The PHOSPHAX sigma HR sets itself apart with a larger measurement range. All
necessary technical modifications as compared with the PHOSPHAX sigma are
described in detail in this supplement to the user manual.
Specification Details
Measurement method Reduction method, derived from DIN 38405 D11,
photometric evaluation using IR LED photometer
Measurement ranges 0.01–0.50 to 10.0 mg/L P total phosphate in 0.1 mg/L increments
0.01–0.50 to 10.0 mg/L P orthophosphate in 0.1 mg/L increments (depending on design)
Measurement interval 15–240 minutes at 5 minute steps, "remote" and "off"
Time of measurement 0–600 minutes
Sample requirement Approximately 100 mL/h
Ambient temperature + 5 °C to + 40 °C (41 °F to 104 °F)
Calibration Automatic at selectable intervals
Inspection interval 3 months
Maintenance
requirements Typically, approximately 1/2 an hour per week
Reagent storage 3 months (standard solution 6 to 12 months)
Outputs 2 current outputs: 0/4...20 mA, maximum 500 Ω
2 limit contacts: isolated, 24 V 1 A
Service interface: RS 232
Interface: bus-compatible (optional)
Type of protection In line with IP 54
Power supply 230 V AC voltage ± 10%/50–60 Hz
Power consumption Approximately 310 VA (incl. refrigerator)
Dimensions: W x H x D 550 mm x 1190 mm x 390 mm (incl. refrigerating set) (21.65 x 46.85 x 15.35 inches)
Weight Approximately 43 kg (without reagents)
Miscellaneous Cleaning unit, data logger, graphical display showing hydrograph curve

6 English
Safety information
Safety information
Read the instructions carefully and in full before unpacking, setting up or operating this
instrument. Please pay attention to all danger and caution statements. Failure to do so
could result in serious injury to the operator or damage to the instrument.
To ensure that the protection provided by this instrument is not impaired, do not use or
install this instrument in any manner other than that specified in this user manual.
Use of hazard information
DANGER
Indicates a potentially or imminently hazardous situation that, if not avoided, will
result in death or serious injury.
WARNING
Indicates a potentially or imminently hazardous situation that, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided, may result in minor
or moderate injury.
Important note: Indicates a situation that, if not avoided, could lead to damage to the
instrument. Important information that requires special emphasis.
Note: Information that supplements points in the main text.
Precautionary labels
Pay attention to all the labels, tags and stickers attached to the instrument. Personal injury
or damage to the instrument could occur if not observed. A symbol, if noted on the
instrument, will be included with a danger or caution statement in the manual.
Product overview
The PHOSPHAX sigma HR is a process photometer used to determine the total
phosphate and orthophosphate (depending on design) present in secondary effluent and
surface water. This supplement to DOC023.53.03113 is only valid in conjunction with the
complete PHOSPHAX sigma user manual DOC023.53.03113.
The PHOSPHAX sigma HR sets itself apart with a larger measurement range. All
necessary technical modifications as compared with the PHOSPHAX sigma are
described in detail in this supplement to the user manual.
This symbol, if noted on the instrument, references the operation and/or safety information in the user's manual.
Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
August 12, 2005, but instead must be collected separately. In accordance with European local and national
regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life
equipment to the manufacturer for disposal at no charge to the user.
Note: For return for recycling, please contact the instrument manufacturer or supplier for instructions on how to
return old or end-of life electrical equipment, manufacturer-supplied electrical accessories and all auxiliary items for
proper disposal.

English 7
Theory of operation
Theory of operation
In an acidic solution with molybdate ions in the presence of antimony ions,
orthophosphate ions create a complex that can be reduced to phosphorus molybdenum
blue using ascorbic acid. The intensity of the color is proportional to the volume of
orthophosphate contained in the sample in the given measurement range.
Polyphosphate and some organic phosphorus compounds can be hydrolyzed to
orthophosphate by heating in a strong acidic solution. Resistant phosphorus compounds
are digested with sodium persulfate. Temperatures well in excess of 100 °C (212 °F) and
high pressures are obtained with the PHOSPHAX sigma HR. Such short digestion times
can only be achieved under these extreme conditions.
Determination of total phosphate
•The cuvette is rinsed with the sample and reagent B.
•Reagent A, reagent B and the homogenized sample are pumped into the cuvette and
mixed.
•The solution is then briefly heated under pressure and immediately cooled again. The
phosphorus compounds are split into orthophosphate.
•Reagents C and D are pumped into the cuvette and mixed.
•The intensity of the blue coloration is measured photometrically.
Determination of orthophosphate (depending on design)
•The cuvette is rinsed with the sample and reagent B.
•Reagent A is pumped into the cuvette, heated and cooled again, which creates
sulfuric acid.
•The homogenized sample and reagents B, C and D are pumped into the cuvette and
mixed.
•The intensity of the blue coloration is measured photometrically.
Disruptions
The ions listed in the table below were checked individually up to the given concentrations.
The overall effect as well as the influence of other ions was not recorded. The following do
not cause disruption:
40 g/L SO42–200 mg/L J–
20 g/L Cl–100 gm/L SiO2
8 g/L K+, Na+80 gm/L Hg2+
2 g/L Ca2+ 50 gm/L Sn2+
800 mg/L Mg2+ 40 mg/L Pb2+
400 mg/L CO32–, NO2–, Fe3+, Fe2+, Cd2+, NH4,
AL3+, Zn2+, Cu2+, Co2+, Ni2+, Mn2+
20 mg/L Ag+, Cr3+
2 mg/L Cr6+

8 English
Installation
Installation
Please pay attention to all information related to wall mounting, installation of infeed and
discharge points as well as all information about electrical connections in the PHOSPHAX
sigma user manual DOC023.53.03113.
Items supplied
Figure 1 Items supplied
1PHOSPHAX Σsigma including refrigerator 5Wear parts set (new instrument)
2Small parts set 6LZP 573 6 m discharge hose
3LCW 893 reagent set
LCW 824 standard solution (2 mg/L)
7Screw caps with hose hole for reagent canister
4Maintenance schedule, certificate of compliance

English 9
Installation
Plan of hose system
Metering and valve hoses
All metering and valve hoses for a piece of equipment must be identifiable by means of
set colors.
Figure 2 Plan of hose system
1Discharge hose 6Reagent A metering hose
2Valve hose 7Reagent B metering hose
3Sample metering hose 8Sample infeed
4Reagent C metering hose 9Discharge
5Reagent D metering hose

10 English
Installation
WARNING
The metering hoses must always be disconnected from the relevant canisters
before any work is carried out to the metering or valve hoses. (Risk of reflux)
Metering hoses are hoses that connect to the sample and reagent pumps. Each metering
hose must only be connected to the applicable sample or reagent pump.
Important note: Replace the sample metering hose, the discharge hose and the hose for
reagent B after 3 months. Brush the pump rollers on the sample pump with silicon paste
(Figure 3). Replace the metering hoses for the reagents A, B, C and D after 6 months.
Valve hoses are connections between the hose pinch valves.
Important note: Valve hoses must be replaced after 6 months.
Figure 3 Application of silicon paste
Color code Designation Course in instrument
Purple Discharge hose
Runs from the cuvette intake (Figure 2, position
1, page 9) via the discharge pump to the exterior
wall
Red Sample metering hose
Runs from hose pinch valves Q1 and Q2 (T piece
valve hose) via the sample pump to the cuvette
intake (Figure 2, position 3)
Red Reagent B metering hose
Runs from reagent B canister via the hose pinch
valve Q3 and via the sample pump to the cuvette
intake (Figure 2, position 7)
Yellow Reagent C metering hose
Runs from reagent C canister via the reagent
pump C, D (dual-channel pump) to the cuvette
intake (Figure 2, position 4)
Black Reagent D metering hose
Runs from reagent D canister via the reagent
pump C, D (dual-channel pump) to the cuvette
intake (Figure 2, position 5)
Orange Reagent A metering hose
Runs from reagent A canister via the hose pinch
valve QA in the refrigerator and via the reagent A
pump to the cuvette
intake (Figure 2, position 6). The small air hose at
the bottom end (also marked orange) is inserted
into the front slot.
Red Valve hose Feed hose for sample, reagent B, standard
solution and air (Figure 2, position 2).