Pyxis SP-400 Manual de usuario

SP-400 Portable Water Analyzer

Operation Manual

Rev. A

Firmware version 1.02

Pyxis Lab, Inc

120 Jeffrey Ave

Holliston, MA 01746

USA

www.pyxis-lab.com

service@pyxis-lab.com

1Contents

1 General Description .................................................................................3

1.1 Specification.....................................................................................3

1.2 Pyxis SP-400 Major Features............................................................2

1.3 Unpackaging the Instrument ...........................................................3

1.4 Standard Accessories .......................................................................3

1.5 Optional Accessories........................................................................3

1.6 Light Shield Cover.............................................................................3

2 Start Pyxis SP-900.....................................................................................4

2.1 Battery Installation...........................................................................4

2.2 Description of the Navigational Control Keys..................................5

2.3 Turning On/Off Pyxis SP-400............................................................6

3 PTSA and Conductivity Measurement .....................................................6

4 Calibration................................................................................................7

4.1 PTSA Stand Alone Calibration (2 point with Zero) ...........................8

4.2 Standard Conductivity Calibration (500, 1000, 2500, 5000 µS).....12

4.3 User Defined Conductivity Calibration Procedure.........................15

4.4 Combined Calibration Procedure...................................................20

5 Device Information and Diagnosis .........................................................24

6 Wireless Connection ..............................................................................25

Confidentiality

iii

The information contained in this manual may be confidential and proprietary and is

the property of Pyxis Lab Inc. Information disclosed herein shall not be used to

manufacture, construct, or otherwise reproduce the goods disclosed herein. The

information disclosed herein shall not be disclosed to others or made public in any

manner without the express written consent of Pyxis Lab Inc.

Standard Limited Warranty

Pyxis Lab warrants its products for defects in materials and workmanship. Pyxis Lab

will, at its option, repair or replace instrument components that prove to be defective

with new or remanufactured components (i.e., equivalent to new). The warranty set

forth is exclusive and no other warranty, whether written or oral, is expressed or

implied.

Warranty Term

The Pyxis warranty term is thirteen (13) months ex-works. In no event shall the

standard limited warranty coverage extend beyond thirteen (13) months from original

shipment date.

Warranty Service

Damaged or dysfunctional instruments may be returned to Pyxis for repair or

replacement. In some instances, replacement instruments may be available for short

duration loan or lease.

Pyxis warrants that any labor services provided shall conform to the reasonable

standards of technical competency and performance effective at the time of delivery.

All service interventions are to be reviewed and authorized as correct and complete at

the completion of the service by a customer representative, or designate. Pyxis

warrants these services for 30 days after the authorization and will correct any

qualifying deficiency in labor provided that the labor service deficiency is exactly

related to the originating event. No other remedy, other than the provision of labor

services, may be applicable.

Repair components (parts and materials), but not consumables, provided in the

course of a repair, or purchased individually, are warranted for 90 days ex-works for

materials and workmanship. In no event will the incorporation of a warranted repair

component into an instrument extend the whole instrument’s warranty beyond its

original term.

Shipping

A Repair Authorization Number (RA) must be obtained from the Technical Support

([email protected]) before any product can be returned to the factory. Pyxis will

pay freight charges to ship replacement or repaired products to the customer. The

customer shall pay freight charges for returning products to Pyxis. Any product

returned to the factory without an RA number will be returned to the customer.

1General Description

1.1 Specification

PTSA

Measurement Range

0 to 300 ppb

Excitation Wavelength

365 nm LED

Emission Wavelength

410 nm

Wavelength Accuracy

±1 nm

Resolution

0.1 ppb

Accuracy

±1% or ±1.0 ppb

Calibration Solution Point

0, 100, 200, and 300 ppb

Conductivity

Measurement Range

0-15000 S/cm

Accuracy

±10% or ±0.5uS (0 to20 S/cm)

±1% (20 to 10000 S/cm)

±2% (10000 to 15000 S/cm)

Resolution

1 S/cm

Time to Reading Stabilization

5 seconds

Calibration Solution Point

Combined, 1000S/cm with 100ppb PTSA

500,1000,2500, and 5000 S/cm

User defined (500-5000 S/cm)

Temperature

Measurement Range

5 –45 °C (42-112 ℉)

Resolution

0.1 °C (0.2 ℉)

Accuracy

±1% of reading

Compensation Method

Automatic to 25 ℃

Others

Battery

9V alkaline battery

Typical Battery Life

3200 readings(480mAh battery)

Display

320x240 TFT-LCD, visible under direct sunlight

Dimension

L160 W74 H33 (mm)

Weight

310g (without battery)

Temperature Range

40 to 106 ℉(4 to 41 ℃)

Humidity

85% at 106 ℉(41 ℃)

Environmental

IP67, dustproof and waterproof

1.2 Pyxis SP-400 Major Features

The Pyxis SP-400 analyzer simultaneously measures the electrical conductivity value

and the concentration of fluorescent tracer PTSA of a water sample. Main features

include:

The SP-400 is pre-calibrated for measuring PTSA (pyrenetetrasulfonic acid) in the

range of 0 to 300 ppb. The fluorescence PTSA measurement is automatically

compensated for sample color and turbidity interference.

Conductivity and PTSA fluorescence can be calibrated using a single combined

standard through a user-friendly menu-driven procedure.

Large color graphic screen that can be read in direct sunlight.

A single conductivity calibration using a single standard covers the whole

measurement range of 0 to 15000 S/cm.

1.3 Unpacking the Instrument

Remove the instrument and accessories from the shipping container and inspect each

item for any damage that may have occurred during shipping. Verify that all items

listed on the packing slip are included. If any items are missing or damaged, please

contact Pyxis Customer Service at service@pyxis-lab.com.

1.4 Standard Accessories

Quick instruction guide

9V alkaline battery

Full instrument manual is available from www.pyxis-lab.com

1.5 Optional Accessories

Carrying case for SP-400 (MA-400B)

100 ppb PTSA + 1000 S/cm (KCl) combined standard in a 500 ml brown

plastic bottle (MA-1010C)

1.6 Light Shield Cover

The light shield cover is shown in Figure 1. It should be in the closed position during

PTSA measurement.

Figure 1 Light Shield in the Open Position

2Start Pyxis SP-400

2.1 Battery Installation

The SP-400 is powered by a 9 volt alkaline battery. Do not use rechargeable nickel

cadmium (NiCad) or lithium batteries. A typical 9V battery lasts for two months and

enables about 3000 measurements. When the battery capacity is critically low, the

SP-400 will display a LOW BATTERY warning for 5 seconds and then automatically

turn off.

Replace the battery to resume operation of the SP-400 after the battery warning. The

SP-400 will automatically turn on in the measurement mode after new battery

installation.

The SP-400 battery compartment, shown in Figure 2, is on the back side of the

instrument.

Install battery as follows:

1. Remove the battery compartment cover by loosening two screws.

2. Make sure that the smaller circular terminal (positive) of the battery is aligned with

the hexagonal socket (positive) of the battery holder and the hexagonal socket

(negative) of the battery with the circular terminal of the holder. Snap the battery

firmly into the battery holder.

Light Shield

Three keys

Measurement Cell

3. Replace the battery compartment cover, making sure that the sealing O-ring is

lying flat on the battery holder. To prevent the SP-400 from accidently being turned

on due to vibration, please firmly tighten the two screws.

Figure 2 Install Battery

2.2 Description of the Control Keys

The SP-400 has three keys as shown in Figure 1. The left (<), right (>) and OK keys

are used to launch an action indicated on the screen directly above the keys. Please

note that the screen is not a tough screen. The labels above the keys indicate the

function associated with the keys and can change according to the screen modes.

Figure 3 Keys and associated functions

2.3 Turning On/Off Pyxis SP-400

To turn on the SP-400, press OK momentarily and release.

To turn off the SP-400, press and hold the OK key. Release the OK key when the LCD

display turns off (after about 3 seconds). The SP-400 will turn itself off after 60

seconds without user interaction through the keys.

3PTSA and Conductivity Measurement

3.1 Measurement

When powered on, the SP-400 will be in the measurement (read) mode (see figure 3).

The water sample can be transferred to the measurement cell using a pipette or filled

directly from a faucet, sample bottle, or sample valve.

The light shield should be in the closed position in order to measure PTSA. If only

conductivity is measured, the light shield can be left in the open position.

Allow 5 seconds for the SP-400 to reach stable PTSA and conductivity readings. The

time required to reach a stable reading may be slightly longer if the water sample

Keys

Key Functions

temperature is significantly different than the environmental temperature at which

the SP-400 had been equilibrated (stored). For a sample with conductivity in the

range of 100 to 6000 S/cm, the measured conductivity value should be stabilized in

the range of 98 –102 to 5940 –6060 S/cm, respectively. For a sample containing

100 ppb PTSA, the measured PTSA should be stabilized within the range of 98 to 102

ppb.

The SP-400 does not need to be turned off between measurements of two samples.

Rinsing the measurement cell several times is recommended, especially when

switching to a sample with conductivity significantly different than the previous

sample.

3.2 Conductivity Temperature Compensation

The displayed conductivity value is automatically corrected to the nominal value at

the reference temperature 25.0°C with using the sample temperature measured. The

commonly used linear correction equation is used:

Conductivity at 25°C = (Conductivity at Tmeasure)/ [1 + 0.02(Tmeasure –25)], where

Tmeasure is the sample temperature in Celsius.

3.3 High Color and Turbidity Warning

The SP-400 has extra channels to measure sample turbidity and color to automatically

compensate sample color and turbidity interference. If sample turbidity and color

values determined are too high, a PTSA measurement warning will be displayed. In

such a case, the user should filter the sample for PTSA measurement.

4Calibration

The SP-400 fluorescence PTSA measurement and conductivity measurement can be

calibrated separately. To calibrate PTSA measurement requires the 100, 200, or 300

ppb PTSA standard solution. A standard with conductivity value 500, 1000, 2500, or

5000 µS can be used to calibrate conductivity. Optionally, the user can use a standard

with any conductivity value in the range of 500 to 5000 µS, such as the commonly

used 1412 (or 1413) µS standard, to calibrate the SP-400.

For convenience, the SP-400 can be calibrated using a combined standard with 100

ppb PTSA + 1000 µS KCl conductivity.

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