Hach Sigma 1600 Instrument Manual

Brand: Hach

Model: Sigma 1600

Type: Instrument Manual

Catalog Number 6507

Sigma 1600 Automatic Liquid Sampler

INSTRUMENT MANUAL

eac/jk/dk 01/2011 8ed

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Page 3

6507TOC.fm Table of Contents

Table of Contents

Specifications............................................................................................................................................................ 8

Section 1 Overview.............................................................................................................................................. 9

1.1 Measurement Capabilities .................................................................................................................................. 9

1.1.1 Timed-Cycle Measurement ..................................................................................................................... 10

1.1.2 Flow Proportional Sampling Mode........................................................................................................... 10

INSTALLATION ................................................................................................................................................... 11

Section 2 Installation ........................................................................................................................................ 13

2.1 Locating the Sampler ........................................................................................................................................ 13

2.2 Piping Connections ........................................................................................................................................... 13

2.2.1 Pumped Flow........................................................................................................................................... 13

2.2.2 Gravity Flow............................................................................................................................................. 13

2.3 Dipper Arm Assembly ....................................................................................................................................... 14

2.3.1 Removing the Dipper Arm ....................................................................................................................... 14

2.3.2 Installing the Dipper Arm ......................................................................................................................... 14

2.4 Electrical Connections ...................................................................................................................................... 15

2.5 4–20 mA Input Option ....................................................................................................................................... 18

2.6 Pump Control Timer Option .............................................................................................................................. 19

2.6.1 Sequence Operation of the Pump Control Timer .................................................................................... 20

2.6.2 Wiring the Pump Control Timer ............................................................................................................... 20

OPERATION......................................................................................................................................................... 21

Section 3 Programming.................................................................................................................................... 23

3.1 Front Panel Controls and Indicators.................................................................................................................. 23

3.2 Sampler Programming Options......................................................................................................................... 24

3.2.1 Timed-Cycle Mode .................................................................................................................................. 24

3.2.2 Flow Proportional Mode........................................................................................................................... 26

3.2.3 4–20 mA Proportional to Flow Operation ................................................................................................ 26

3.2.4 Sample Volume x 25 Milliliters................................................................................................................. 29

3.2.5 Samples Per Bottle Mode........................................................................................................................ 30

3.2.6 Bottles Per Sample Mode........................................................................................................................ 30

3.2.7 Sample Program Delay ........................................................................................................................... 30

3.2.8 24 Bottle Discrete Sample Kit (Optional) ................................................................................................. 31

MAINTENANCE................................................................................................................................................... 33

Section 4 Maintenance ..................................................................................................................................... 35

4.1 Routine Cleaning .............................................................................................................................................. 35

4.1.1 Cleaning the Sampler .............................................................................................................................. 35

4.1.2 Cleaning the Sampler Containers............................................................................................................ 35

4.2 Lubrication/Oiling .............................................................................................................................................. 35

4.3 Routine Refrigerator Maintenance .................................................................................................................... 35

Page 4

Table of Contents

6507TOC.fm

Table of Contents

GENERAL INFORMATION................................................................................................................................45

Contact Information for U.S.A. and Outside Europe ............................................................................................... 47

Contact Information for Europe............................................................................................................................... 48

Warranty ................................................................................................................................................................. 49

Page 5

6507saf.fm Safety Precautions

Safety Precautions

Please read this entire manual before unpacking, setting up, or operating this instrument.

Pay particular attention to all danger and caution statements. Failure to do so could result in serious injury to the

operator or damage to the equipment.

To ensure the protection provided by this equipment is not impaired, do not use or install this equipment in any

manner other than that which is specified in this manual.

Use of Hazard Information

If multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the

greatest hazard.

DANGER

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in

death or serious injury.

CAUTION

Indicates a potentially hazardous situation that may result in minor or moderate injury.

NOTE

Information that requires special emphasis.

Precautionary Labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if

not observed.

This symbol, if noted on the instrument, references the instruction manual for operation

and/or safety information.

This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock

and/or electrocution exists and indicates that only individuals qualified to work with hazardous voltages

should open the enclosure or remove the barrier.

This symbol, when noted on the product, identifies the location of a fuse or current limiting device.

This symbol, when noted on the product, indicates that the marked item can be hot and should not be

touched without care.

This symbol, when noted on the product, indicates the presence of devices sensitive to Electro-static

Discharge and indicates that care must be taken to prevent damage to them.

This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only

individuals qualified and trained to work with chemicals should handle chemicals or perform

maintenance on chemical delivery systems associated with the equipment.

This symbol, if noted on the product, indicates the need for protective eye wear.

This symbol, when noted on the product, identifies the location of the connection for Protective Earth

(ground).

Page 6

Safety Precautions

6507saf.fm

Safety Precautions

Hazardous Locations

The Sigma 1600 Automatic Liquid Sampler is not approved for use in

hazardous locations as defined in the National Electrical Code.

DANGER

Although some Sigma

products are designed and

certified for installation in

hazardous locations as

defined by the National

Electrical Code, many Sigma

products are not suitable for

use in hazardous locations. It

is the responsibility of the

individuals who are installing

the products in hazardous

locations to determine the

acceptability of the product

for the environment.

Additionally, to ensure safety,

the installation of

instrumentation in hazardous

locations must be per the

manufacturer's control

drawing specifications. Any

modification to the

instrumentation or the

installation is not

recommended and may result

in life threatening injury

and/or damage to facilities.

DANGER

Bien que certains produits Sigma soient conçus et certifiés pour être

installés dans des endroits dangereux tels que définis par le National

Electric Code, de nombreux produits Sigma ne conviennent pas pour de

tels endroits. Il relève de la responsabilité des personnes qui placent les

produits dans des endroits dangereux de déterminer s'ils sont adaptés à

cet environnement. En outre, à des fins de sécurité, le placement de

machines dans des endroits dangereux doit s'effectuer dans le respect

des consignes des schémas de contrôle du fabricant. Toute

modification apportée aux machines ou tout déplacement de celles-ci

est déconseillé, car susceptible de provoquer des accidents matériels

et/ou corporels.

PELIGRO

Aunque algunos productos Sigma están diseñados y homologados para

su instalación en entornos peligrosos, entendidos éstos conforme a la

definición del “National Electrical Code” (Reglamento Eléctrico

Nacional), muchos de los productos Sigma no son aptos para su

utilización en lugares peligrosos. Es responsabilidad de quienes

instalen los productos en entornos peligrosos el asegurarse de la

idoneidad de dichos productos para este tipo de entorno. Además, para

garantizar la seguridad, la instalación de los instrumentos en lugares

peligrosos deberá realizarse conforme a las especificaciones del plano

del fabricante. Se desaconseja cualquier modificación de los

instrumentos o de la instalación, ya que podría provocar lesiones

corporales graves, e incluso fatales, y/o daños materiales a los equipos.

GEFAHR

Einige Sigma-Produkte sind für den Einbau in explosionsgefährdeten

Bereichen gemäß den Festlegungen des National Electrical Code

speziell geprüft und zugelassen. Dies gilt jedoch keineswegs für das

gesamte Sigma-Produktangebot. Die Entscheidung, ob ein Produkt für

den Einsatz in explosionsgefährden Bereichen geeignet ist oder nicht,

bleibt in die Verantwortung des jeweiligen Installateurs gestellt. Im

Interesse der Sicherheit ist es zudem erforderlich, dass ein etwaiger

Einbau des Geräts in explosionsgefährdeten Bereichen genau nach den

Steuerungsanlagen-Zeichnungen des Herstellers erfolgt. Von der

Vornahme von Änderungen an meß- bzw. regeltechnischen Geräten

bzw. abweichender Installation wird dringend abgeraten, da hierdurch

lebensbedrohliche Personen- und/oder Sachschäden verursacht werden

können!

Electrical equipment marked with this symbol may not be disposed of in European public disposal

systems after 12 August of 2005. In conformity with European local and national regulations (EU

Directive 2002/98/EC), European electrical equipment users must now return old or end-of-life

equipment to the Producer for disposal at no charge to the user.

Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return

end-of-life equipment, producer-supplied electrical accessories, and all auxillary items for proper disposal.

Safety Precautions

Page 7

6507saf.fm Safety Precautions

PERICOLO

Nonostante alcuni prodotti Sigma, siano predisposti e certificati per

l'installazione in ambienti pericolosi, come previsto dal Codice

Normativo Nazionale che concerne l'elettricità, è sconsigliabile utilizzare

prodotti Sigma in ambienti considerati pericolosi. E' diretta

responsabilità della persona che installa lo strumento in un luogo

ritenuto “pericoloso” appurare se lo strumento è compatibile con tale

ambiente. Inoltre, per maggior sicurezza, l'installazione dello strumento

in ambienti pericolosi deve seguire le specifiche di progettazione del

produttore. Si deve evitare qualunque manomissione allo strumento o

all'installazione, tali modifiche possono rappresentare una minaccia per

la vita delle persone e creare guasti.

Confined Space Entry

Important Note: The following information is provided to guide users of the Sigma

1600 Automatic Liquid Sampler on the dangers and risks associated with entry into

confined spaces.

Definition of Confined Space

A Confined Space is any location or enclosure that presents or has the

immediate potential to present one or more of the following conditions:

• An atmosphere with less than 19.5% or greater than 23.5% oxygen

and/or more than 10 ppm Hydrogen Sulfide (H

S).

• An atmosphere that may be flammable or explosive due to gases, vapors,

mists, dusts, or fibers.

• Toxic materials which upon contact or inhalation could result in injury,

impairment of health, or death.

Confined spaces are not designed for human occupancy. They have restricted

entry and contain known or potential hazards.

Examples of confined spaces include manholes, stacks, pipes, vats, switch

vaults, and other similar locations.

Standard safety procedures must always be followed prior to entry into

confined spaces and/or locations where hazardous gases, vapors, mists,

dusts, or fibers may be present.

Before entering any confined space check with your employer for procedures

related to confined space entry.

Page 8

Specifications

6507spec.fm

Specifications

Specifications are subject to change without notice.

Sampler/Refrigerator Cabinet Fiberglass reinforced plastic.

Cabinet Hardware Stainless Steel.

Sample Chamber Fiberglass reinforced plastic, 5–30 gpm capacity with adjustable plastic weir.

Pipe Connections

Inlet—2 in. diameter 80 SCH 80 PVC socket coupling.

Outlet—3 in. diameter SCH 80 PVC socket coupling (flanged connections optional).

Refrigerator Compartment 21in.Hx15in.Wx15in.D

Refrigerator Insulation Rigid polyurethane foam; 1 in. thick.

Refrigerator

/6 horsepower compressor with fan-cooled epoxy coated condenser. Thermostatically

controlled temperature, 4–10 °C. Output—1350 BTU/hr. Refrigerant—R-414B.

Dipper Arm

All plastic construction, 25 mL per cycle with 5 in. water depth in flow through chamber,

cam operated.

Dipper Drive Motor Permanent magnet, high torque dc, totally enclosed.

Sample Volume Adjustable 1–99 cycles per sample using 2-digit thumbwheel switch.

Flow Proportional 1–9999 contact closures.

Interval Between Samples

Timed-Cycle Mode—Sample interval adjustable from 1–9999 minutes.

Flow Proportional Mode—Sample interval adjustable from 1–9999 contact closures.

With 4–20 mA (optional), sample interval is set from 1–9999 minutes at 100% flow rate.

LED Display

4-digit display indicates number of minutes or contact closures remaining until the

next sample.

Sample Program Delay Start of sampling program may be delayed 1–9999 minutes.

Automatic Shut-Off

Sampler operation terminated after adjustable preselected number of samplers have

been taken.

Timer/Controller Solid state quartz crystal time base clock. Adjustable from 1–600 sample cycles per hour.

Chassis

Solid State—circuit boards and board components are treated with 3 mm thick

corrosion/moisture resistant polyurethane coating.

Electronics Enclosure Fiberglass reinforced plastic, fully gasketed and moisture proof with clear front cover.

Sample Containers 3 gal polyethylene with lid (2½ gal glass container, 24–475 mL polyethylene bottles optional)

Outside Dimensions 52in.Hx19in.Wx22in.D

Weight 115 lb

Power 120 V ac, 60 Hz, 4.8 amps.

Operating Instructions Located on front panel overlay.

Certifications

This product has no 3rd party safety certifications to UL or CSA safety standards (3rd party

on-site certifications of the product may be required)

Page 9

6507Overview.fm Overview

Section 1 Overview

The Sigma 1600 Automatic Liquid Sampler automatically collects wastewater

samples and preserves the samples using refrigeration. The sampler

operates on 120 V ac, 60 Hz. The sampler cabinet is constructed entirely of

non-corrosive fiberglass reinforced plastic. The refrigerator is equipped with a

/6 horsepower compressor with a fan-cooled condenser, front ventilation,

silver brazed connections, and adjustable thermostat. Refer to Figure 1 .

Figure 1 Sigma 1600 Automatic Liquid Sampler

1.1 Measurement Capabilities

The sampler collects samples on a timed-cycle basis or in proportion to flow

rate when used in conjunction with a flow meter. The flow through chamber

(Figure 2) receives a continuous flow of wastewater supplied by a pump or

gravity flow. Gravity flows the wastewater out of the sampler chamber through

a 3 in. diameter outlet. To prevent suspended solids from settling, the flow rate

through the sampler chamber can be 5–30 gallons per minute. The rotating

cam operated dipper arm cycle takes a repetitive 25 mL sample from the

chamber’s wastewater flow.

Page 10

Measurement Capabilities

6507Overview.fm

Section 1

Figure 2 Flow Through Chamber

1.1.1 Timed-Cycle Measurement

The time-cycle measurement mode controls the sample frequency by using

an integral quartz crystal time-based clock and solid state controller. The

samples are set from 1–9999 minute intervals on a 4-digit thumbwheel switch.

1.1.2 Flow Proportional Sampling Mode

The sampler accumulates 1–9999 contact closure signals between sample

events from an external flow meter using the flow proportional sampling

mode. A 4-digit LED display continually indicates the number of minutes or

contact closures remaining until the next sample event. The volume of the

individual sample event adjusts in 25 mL increments. Adjust the volume by

setting the number of dipper arm cycles for an individual sample event on the

2-digit thumbwheel switch.

2 in. Inlet

Adjustable Weir

(Cat. No. 2341)

3 in. Outlet

Sample Transfer Tube

Dipper Arm Shaft

(Cat. No. 1922)

Front

Dipper Arm Assembly

(Cat. No. 1945)

Page 11

6507installstopper.fm INSTALLATION

DANGER

Some of the following manual sections contain information in the form of warnings, cautions and notes

that require special attention. Read and follow these instructions carefully to avoid personal injury and

damage to the instrument. Only personnel qualified to do so, should conduct the installation/maintenance

tasks described in this portion of the manual.

DANGER

Certains des chapitres suivants de ce mode d’emploi contiennent des informations sous la forme

d’avertissements, messages de prudence et notes qui demandent une attention particulière. Lire et suivre

ces instructions attentivement pour éviter les risques de blessures des personnes et de détérioration de

l’appareil. Les tâches d’installation et d’entretien décrites dans cette partie du mode d’emploi doivent être

seulement effectuées par le personnel qualifié pour le faire.

PELIGRO

Algunos de los capítulos del manual que presentamos contienen información muy importante en forma de

alertas, notas y precauciones a tomar. Lea y siga cuidadosamente estas instrucciones a fin de evitar

accidentes personales y daños al instrumento. Las tareas de instalación y mantenimiento descritas en la

presente sección deberán ser efectuadas únicamente por personas debidamente cualificadas.

GEFAHR

Einige der folgenden Abschnitte dieses Handbuchs enthalten Informationen in Form von Warnungen,

Vorsichtsmaßnahmen oder Anmerkungen, die besonders beachtet werden müssen. Lesen und befolgen

Sie diese Instruktionen aufmerksam, um Verletzungen von Personen oder Schäden am Gerät zu

vermeiden. In diesem Abschnitt beschriebene Installations- und Wartungsaufgaben dürfen nur von

qualifiziertem Personal durchgeführt werden.

PERICOLO

Alcune parti di questo manuale contengono informazioni sotto forma d’avvertimenti, di precauzioni e di

osservazioni le quali richiedono una particolare attenzione. La preghiamo di leggere attentivamente e di

rispettare quelle istruzioni per evitare ogni ferita corporale e danneggiamento della macchina. Solo gli

operatori qualificati per l’uso di questa macchina sono autorizzati ad effettuare le operazioni di

manutenzione descritte in questa parte del manuale.

INSTALLATION

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Page 13

6507installation.fm Installation

Section 2 Installation

2.1 Locating the Sampler

Note: The sampler must stand

upright at all times. Storage of the

unit on its side causes damage to

the refrigerator compressor.

Although the sampler may be located outdoors, an indoor location free of

humidity and temperature extremes can extend the useful life and operational

reliability of the unit. A suitable weatherproof enclosure is recommended if the

sampler is located outdoors. In cold weather, insulate the inlet and outlet

piping for freeze protection.

The sampler cabinet legs elevate the unit approximately ¾ in. off the floor,

which is generally sufficient to protect the refrigeration unit from water

damage. In areas subject to flooding or large amounts of water on the floor,

install the sampler on a 2–3 in. high concrete pad. Take the necessary steps

to ensure that the installation is level. Allow approximately 18 in. of clearance

from the back side of the sampler cabinet to the nearest obstruction to provide

easy access to the refrigeration system.

2.2 Piping Connections

Note: To prevent damage to the

sampler, the inlet and outlet piping

should be adequately supported so

the weight of the piping and related

fittings do not impose a load on the

sample chamber fittings.

The flow through the sampling chamber of the sampler has a

2 in. inlet and 3 in. outlet. The pipe fittings on the chamber are Schedule 80

PVC socket couplings (PVC flanged connections are optional). If the sampler

is not equipped with the optional flanged fittings, install a true union in each of

the lines at the inlet and outlet of the sample chamber. This will provide a way

to disconnect the inlet and outlet at ease when cleaning and/or servicing

the sampler.

The length of a discharge pipe can vary greatly depending on the type of

installation. Install a throttling valve on the 2 in. inlet pipe near the sampler

with a bypass so that the flow rate can be adjusted to accommodate particular

site conditions. The bypass discharge pipe should not connect into the

discharge pipe of the sample flow through chamber. Gravity or a pump will

supply wastewater to the sample flow through chamber.

2.2.1 Pumped Flow

A piping schematic which includes the location of the sampler relative to the

sample source helps determine the static and total dynamic head of the

2 in. sample inlet piping. The actual pump configuration (i.e. centrifugal,

centrifugal self-priming, submersible, etc.) is a preference.

Maintain a minimum of 2 fps transport velocity of wastewater in the inlet piping

to minimize the chance of solids settling out in the wastewater. Use a smaller

size inlet piping if downstream flow conditions in the discharge pipe do not

permit a sufficient flow rate to maintain the velocity.

Install a 2 in. elbow at the sample chamber inlet if the inlet piping is less than

2 inches in diameter. A pump on/off switch must be located in the immediate

vicinity of the sampler.

2.2.2 Gravity Flow

If the flow rate is excessive, install a throttling valve and bypass piping

arrangement on the inlet pipe.

Page 14

Dipper Arm Assembly

6507installation.fm

Section 2

2.3 Dipper Arm Assembly

Follow the steps below and refer to Figure 3 for proper dipper arm assembly.

2.3.1 Removing the Dipper Arm

1. Loosen the two set screws located on the bottom of the mounting block.

2. Gently slide the dipper arm assembly off the end of the dipper arm shaft.

2.3.2 Installing the Dipper Arm

1. Slide the dipper arm assembly onto the dipper shaft.

2. Tighten the two set screws against the flat surface on the

dipper arm shaft.

Figure 3 Dipper Arm Assembly

Section 2

Page 15

6507installation.fm Electrical Connections

2.4 Electrical Connections

DANGER

Connect voltages 30 Vrms (60 V

dc) only in the low voltage

junction box. 110 Volts or greater

connections must be made in the

high voltage terminal box.

All power and external input signal connections are in two 4-inch

junction boxes located on the rear exterior of the sampler. All AC

connections are made in the box labeled “High Voltage”. The low

voltage connections are made in the other box. Within the high voltage

junction box (see Table 1), wires going to the control panel and the

compressor are both wired directly to the incoming power line, which

must be powered by a dedicated circuit with a 15 amp (minimum)

breaker in conduit. Wiring connections for the optional pump control

are also made in the high voltage junction box, via a second conduit.

If optional 4–20 mA or contact closure connections are made in the low

voltage junction box, use a separate conduit (see Table 2).

Table 1 High Voltage Junction Box Connections

Power or Control Wire Wire and Connectors

120 V 60 Hz White (neutral), Black (live), Green (ground)—two sets

Pump Control Timer (optional)

Gray jacketed cable with green band. One red and one black 18-gauge conductor.

Rated 1A at 125 VAC.

Table 2 High Voltage Junction Box Connections

Signal Wire Wire and Connectors

Contact Closure

2-conductor gray jacketed cables with red and black connector. The polarity is not

important. The contact closure signal must be a dry contact closure.

4–20 mA (optional)

2-conductor gray jacketed and shielded cable. Black (negative), Clear (positive).

Note: Although the 4–20 mA is optional, the 4–20 mA wires are present in the

junction box.

Page 16

Electrical Connections

6507installation.fm

Section 2

Figure 4 Sigma 1600 Automatic Sampler Wiring

Section 2

Page 17

6507installation.fm Electrical Connections

Figure 5 Control Panel Wiring

Page 18

4–20 mA Input Option

6507installation.fm

Section 2

2.5 4–20 mA Input Option

The 4–20 mA (1–5 V dc) circuit in the sampler is a basic voltage to frequency

converter with a 249 ohm load resistor across the input. Parallel loop wiring or

series loop wiring can be used when wiring multiple units (receivers) in a

control loop.

Parallel Loop Wiring

Parallel loop wiring is the most commonly used approach in interconnecting

electronic receivers (sampler, pump, etc.), where the same voltage feeds

several receivers that are electronically connected in parallel. There will be no

adverse effects on the receivers remaining in the loop. In order that the

addition or deletion of receivers from the parallel loop does not affect

accuracy, the receiver must have a high input resistance. A single common

earth ground is recommended.

Example:

Referring to Figure 6, the resistor converts the two wire transmitter 4–20 mA

dc output to a 1–5 V dc signal to actuate receivers A, B, and C. Receivers B

and C may be removed or added without interrupting the transmitter output or

significantly affecting the voltage signal.

Figure 6 Parallel Loop Wiring

Series Loop Wiring

Series loop wiring consists of electrical connections in a series that use the

same current to feed various receivers. If the addition or deletion of certain

receivers from this series loop is not to affect calibration, then the source must

be a true current source, i.e. a two wire transmitter. This current loop with

several receivers in a series can be grounded only at one point. More than

one ground can cause a short in input receivers. If either current sensitive

receivers A or B are removed from the loop, the current path is interrupted and

the other receivers will no longer have an input signal (see Figure 7).

The addition of a diode allows removal of receiver B without affecting the loop.

The normal voltage drop across receiver B does not allow the diode to

conduct (see Figure 7). With removal of the receiver, the diode conducts at a

smaller voltage drop. It is recommended to use a true current source rather

than a true voltage source for installations requiring a long distance between

the transmitter and receiver.

Section 2

Page 19

6507installation.fm Pump Control Timer Option

Figure 7 Series Loop Wiring

2.6 Pump Control Timer Option

The pump control timer option (Cat. No. 1662) allows the pump that supplies

the wastewater to the sampler to be turned off during the Interval Between

Samples. A sampler equipped with this option will have two potentiometers

with screwdriver adjustments located between the 1 amp fuse holder and the

power ON button on the control panel.

The potentiometer located near the 1 amp fuse holder controls the Pump On

time from 2–90 seconds. To set the pump control timer:

• Turn the screwdriver adjustment clockwise to increase the pump running

time or;

• Turn the screwdriver adjustment counterclockwise to decrease the pump

running time.

Set the adjustment so the pump will run for a sufficient time to ensure

complete purging of the inlet piping to the sampler and the sample chamber.

To ensure flow through the sampler chamber at the instant a sample is taken,

slightly adjust the time longer than the Sample Delay.

Note: Set the “Sample Delay”

adjustment for a sufficient time so

the sample intake line and chamber

are flushed with the new sample

liquid before the sample is taken.

The potentiometer located near the power ON button controls the time for the

Sample Delay from 2–90 seconds. To set the Sample Delay:

• Turn the screwdriver adjustment clockwise to increase the sample

delay time or;

• Turn the screwdriver adjustment counterclockwise to decrease the

sample delay time.

Page 20

Pump Control Timer Option

6507installation.fm

Section 2

2.6.1 Sequence Operation of the Pump Control Timer

When the Sample Countdown display reaches zero, three things occur

simultaneously:

1. The Sample Countdown will reset.

2. The Sample Delay time set on the lower of the two potentiometer will

count down.

3. The wastewater supply pump will turn on for the length of time set on the

Pump On potentiometer.

The cycle will continue until the preselected number of samples are delivered

to the sample container(s). The sampler will shut down and a Sample

Complete indicator light will be displayed on the front panel.

2.6.2 Wiring the Pump Control Timer

Note: Larger pumps require an

additional external relay suitably

sized for the larger motor.

To wire the pump to the sampler, use the gray jacketed cable with a green

band located in the junction box on the back of the sampler cabinet (see

Figure 4 on page 16 and Table 1 on page 15 for more wiring information.) The

internal relay (dry contact closure) for the pump is capable of operating up to

/6 horsepower and 120 V ac or

/3 horsepower at 220 V ac.

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Hach Sigma 1600 Instrument Manual

Brand: Hach

Model: Sigma 1600

Type: Instrument Manual

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Hach Sigma 1600 Instrument Manual

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