Hanna Instruments PH 500 Series Manual de usuario

pH500 & mV600 Series

Panel-mounted,

Microprocessor-based

pH and ORP Controllers

Instruction Manual

All rights are reserved. Reproduction in whole or in part is prohibited without the

written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode

Island, 02895, USA.

Dear Customer,

Thank you for choosing a Hanna Instruments Product.

This instruction manual refers to the following products:

pH500111-αpH controller with single setpoint, ON/OFF

control, analog output

pH500112-αpH controller with single setpoint, ON/OFF

control, RS232 output

pH500121-αpH controller with single setpoint, propor-

tional and ON/OFF controls, analog output

pH500122-αpH controller with single setpoint, propor-

tional and ON/OFF controls, RS232 output

pH500211-αpH controller with dual setpoint, ON/OFF

control, analog output

pH500212-αpH controller with dual setpoint, ON/OFF

control, RS232 output

pH500221-αpH controller with dual setpoint, proportional

and ON/OFF controls, analog output

pH500222-αpH controller with dual setpoint, proportional

and ON/OFF controls, RS232 output

mV600111-αORP controller with single setpoint, ON/OFF

control, analog output

mV600112-αORP controller with single setpoint, ON/OFF

control, RS232 output

mV600121-αORP controller with single setpoint, propor-

tional and ON/OFF controls, analog output

mV600122-αORP controller with single setpoint, propor-

tional and ON/OFF controls, RS232 output

α = 1 means 115 Vac, 50/60 Hz power supply

α = 2 means 230 Vac, 50/60 Hz power supply

Please read this instruction manual carefully before using the

controller. For more information about Hanna Instruments

and our products, visit www.hannainst.com or e-mail us

at [email protected].

For technical support, contact your local Hanna Instruments

Office or e-mail us at [email protected].

TABLE OF CONTENTS

PRELIMINARY EXAMINATION ..................4

GENERAL DESCRIPTION......................4

FUNCTIONAL DESCRIPTION ..................6

MECHANICAL DIMENSIONS. . . . . . . . . . . . . . . . . . . 7

SPECIFICATIONS pH500 & mV600 ..............8

INSTALLATION .............................9

SETUP MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CONTROL MODE .........................17

IDLE MODE ..............................22

ANALOG OUTPUT .........................23

RS232 COMMUNICATION AND DATA LOGGING..25

CALIBRATION ............................27

LAST CALIBRATION DATA ....................39

STARTUP ................................42

FAULT CONDITIONS AND SELFTEST PROCEDURES . 43

pH VALUES AT VARIOUS TEMPERATURES .........47

ELECTRODE CONDITIONING AND MAINTENANCE 48

TAKING REDOX MEASUREMENTS ..............52

ACCESSORIES ............................54

WARRANTY ..............................60

CE DECLARATION OF CONFORMITY...........62

PRELIMINARY EXAMINATION

Remove the instrument from the packing material and exam-

ine it carefully to make sure that no damage has occurred

during shipping. If there is any noticeable damage, please

contact your local Hanna Instruments Office.

Note Save all packing materials until you are sure that the instru-

ment functions correctly. Any damaged or defective items

must be returned in their original packing materials together

with the supplied accessories.

GENERAL DESCRIPTION

The product is a real time microprocessor-based pH/ORP

controller. It provides accurate measurements, flexible

ON/OFF or proportional control capabilities and dual

alarm signals.

The system is composed of a case inside which the signal

conversion circuitry, the microprocessor circuitry and the

output power drivers are contained.

MAIN FEATURES OF DIFFERENT MODELS

• Display: large LCD with 4½ 17 mm digits and 3 ½ 10 mm

digits.

• LEDs: three (mV600) or four (pH500) LEDs are provided

for signaling the energizing of relay 1 (a yellow led), relay

2 (a yellow led in pH500 Series only) and alarm relays (a

green and a red LED).

• Relays: 1 or 2 output relays for acid or base dosage

(COM, NO and NC contacts) and 1 output relay for

alarm condition (COM, NO and NC contacts).

• RS232 isolated communication link (optional).

• Calibration and Setup procedures allowed only through

an unlock password.

• Calibration: for pH500 Series in 1, 2 or 3 points with

buffers 4.01, 7.01 and 10.01 pH (25 °C); for mV600

Series in 1 or 2 points at 0, 350 and 1900 mV.

• Temperature compensation of the Hanna Instruments

standard buffers (for pH500 Series only).

• Temperature compensation of the pH reading (for pH500

Series only).

• Manual temperature setting when the temperature probe

is not inserted or temperature exceeds the upper range.

• Last calibration data internally recorded (non-volatile EE-

PROM memory): calibration date and time, pH offset, pH

slopes, number of calibration points and correspondent

pH values (for pH500 Series only) or calibration date

and time and the mV calibration points used (for mV600

Series only).

• Input: pH electrode with BNC connector.

• Output:

- isolated 0-1 mA, 10 Kmaximum load (optional);

- isolated 0-20 mA, 750 maximum load (optional);

- isolated 4-20 mA, 750 maximum load (optional);

- isolated 0-5 Vdc, 1 Kminimum load (optional);

- isolated 1-5 Vdc, 1 Kminimum load (optional);

- isolated 0-10 Vdc, 1 Kminimum load (optional).

• Real time clock.

FUNCTIONAL DESCRIPTION

FRONT PANEL

1. Liquid Crystal Display

2. LCD key exits from setup and calibration modes and reverts back

to normal mode (in idle or control phases with the mea-

surement on the display). In pH500 series, during pH

calibration, alternately displays pH buffer value or current

temperature

3. SETUP key enters setup mode

4. CAL DATA key last calibration data viewing (enters and exits)

5. CAL key initiates and exits calibration mode

6. key increases the blinking digit/letter by one when selecting a

parameter. Advances forward while in last calibration data

viewing mode. Increases the temperature setting when

temperature probe is not inserted

7. key decreases the blinking digit/letter by one when selecting a

parameter. Reverts backward while in last calibration data

viewing mode. Decreases the temperature setting when

temperature probe is not inserted

8. key moves to the next digit/letter (circular buffer) when selecting

a parameter. Same as key during last calibration data

viewing mode

9. CFM key confirms current choice (and skips to the next item)

10. LEDs

MECHANICAL DIMENSIONS

FRONT VIEW SIDE VIEW

REAR PANEL

1. RS232 Connection Port (pH500XY2 and mV600XY2 models only)

2. Analog Output (pH500XY1 and mV600XY1 models only)

3. Power Supply Input

4. Alarm Terminal

5. Relay 2 - Second Dosing Terminal (pH5002XY models only)

6. Relay 1 - First Dosing Terminal

7. Connections for Pt 100 Temperature Sensor

8. Connection for Electrode Reference

9. Connection for Potential Matching Pin

10. BNC Socket for pH or ORP Electrode

11. ±5V Power Supply Output

Unplug the meter before starting any electrical connections.

SPECIFICATIONS pH500 & mV600

Range

0.00 -14.00 pH (pH500 series only)

±2000 mV (mV600 series only)

-9.9 to 120.0 °C

Resolution 0.01 pH (pH500 series)/ ±1 mV (mV600 series)

0.1 °C

Accuracy

(@20 °C/68 °F)

±0.02 pH (pH500 series)/ ±2 mV (mV600 series)

±0.5 °C

Typical EMC

Deviation

±0.2 pH (pH500 series)/ ±10 mV (mV600 series)

±0.5 °C

Calibration pH: automatic, 1. 2 or 3 point, at pH4.01, 7.01, 10.01

ORP: automatic, 2 point, at 0 and 350 or 1900 mV

Temperature

Compensation

(pH500 series only)

automatic (with Pt100 probe) or manual, -9.9 to 120 °C

Outputs

digital:RS232 bi-directional, optoisolated; or analog,

galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA, 0-5

VdC and 0-10 Vdc

Setpoint Relay 1 or 2 contact outputs SPDT, 5A-250 Vac, 5A-30 Vdc (re-

sistive load). Fuse protected: 5A, 250V FUSE

Alarm Relay 1 conatct output SPDT, 5A-250 Vac, 5A-30 Vdc (resistive

load). Fuse protected: 5A, 250V FUSE

Installation Category II

Power Supply 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz

Power Consumption 15VA

Over Current

Protection 400 mA 250V fast fuse

Max. Oscillation

Frequency 4 MHz

Environment 0 to 50 °C (32 to 122 °F), RH max 95%

Enclosure single case 1/2 DIN

Dimensions panel cutout: 140 x 140 mm

instrument: 144 x 144 x 170 mm

Weight approximately 1.6 kg. (3.5 lb.)

INSTALLATION

pH500 and mV600

offer a multitude of

possibilities, from

single and dual set-

points to ON/OFF or

propotional dosage,

isolated outputs with

user-selectable zoom,

bi-directional RS232,

recorder outputs in

mAmps and Volts.

In addition, pH500

and mV600 are both

equipped with the

exclusive differential

input.

In a system with poor

grounding, it is possi-

ble to have a ground

current flowing through

the reference junction.

This can cause a rap-

id degradation of the

electrode.

The Hanna Instruments

differential input re-

duces the likelihood of

ground loops.

See the diagram for a

recommended instal-

lation.

• Power Supply: Connect a 3-wire power

cable to the terminal strip, while paying

attention to the correct line (L), earth (PE)

and neutral (N) terminal connections.

Power: 115VAC - 100 mA / 230VAC - 50 mA

Line Contact: fused inside 400 mA.

PE must be connected to ground; leakage current 1mA.

• Electrode: Connect the pH or ORP electrode to the BNC

socket (#10 at page 7).

To benefit from the differential input, connect the proper

electrode wire (if available) or a cable with a potential

matching pin (grounding bar) to the relevant terminal (#9

at page 7).

Note When it is not possible to immerse the Potential Matching

Pin together with the pH electrode in the solution, disable

the differential input by connecting the Connection for Po-

tential Matching Pin (#9 at page 7) with the Connection for

Electrode Reference (#8 at

page 7) with a jumper wire.

• Pt 100 Terminals: these contacts (#7 at page 7) connect

the Pt 100 temperature sensor for automatic temperature

compensation of pH measurement. In the case of shielded

wire, connect the shield to pin 4.

In the case of a 2-wire sensor

connect the Pt 100 to pins 1 and

3, and short pins 2 and 3 with a

jumper wire.

If the Pt 100 has more than 2

wires, connect the two wires of

one end to pins 2 and 3 (pin 2 is

an auxiliary input to compensate

for the cable resistance) and one

wire from the other end to pin

1. Leave the fourth wire unconnected, if present.

• Power Supply Output: these terminals

provide +5 Vdc and -5 Vdc signals to

supply power to amplified electrodes.

Note All cables connected to rear panel should

end with cable lugs.

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