Omega PHH444 User guide

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User’s Guide

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PHH444

Handheld pH/mV Meter and pH Electrode Kit

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omega.com [email protected]

Servicing North America:

U.S.A. Omega Engineering, Inc. Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only) Tel: (203) 359-1660 Fax: (203) 359-7700 e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

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FEATURES

Model

Parameter

Data Hold

Freeze the display reading.

Meter dimension

175mm x 58mm x 32mm (With BNC connector)

Power supply

AAA batteries x 3 pcs

Temperature

0~90 ℃

Temp. accuracy

±0.5 ℃

Measurement range

0 to 14 pH

414.12 mV to -414.12 mV

Accuracy

±0.02 pH + 2 digit

pH Calibration

pH 4, pH 7, pH 10 3 points calibration

Ensure the best linearity and accuracy.

Resolution

0.01(pH)

Automatic temperature Compensation (ATC)

YES

Dimension

12x120mm

Electrode body

Sensor type

Glass bulb

ATC Temperature sensor electrode port (pH)

3.5 mm diameter phone jack

Cable length

1 M

 Professional look design accurate portable meters with large LCD display, BNC connector.  All electrodes with BNC connector compatible to any other electrodes.  Hold function, low battery icon indicator, automatic power off in 15 minutes and may be disabled.  Built-in different temperature compensation selectable: Thermistor 30K, 10K ohm and not 25.0 (manual

compensation).

 RFS (Recover to Factory Setting) function is included.  3 points pH calibration: 4.01, 7, 10.01 (Adjustable). Calibration buffer solution is included with soaking

solution.

 Tripod receptacle mountable design for long time monitoring purposes.  All electrodes are well calibrated before shipment.  Warranty period of meter is two years. Electrode is one year.

SUPPLIED

 Meter  Electrode x 1 pc (pH)  Battery-AAA x 3 pcs  pH buffer solution x 3 pcs (pH 4, pH7, pH10)  Soaking Solution x 1 pc  Black carrying case  Calibration certificate

SPECIFICATION

PHH444

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KEY PAD (CONTROLS)

Pull down the switch

PWR: Power on (Press in one second) or power off (Press more than 2 seconds when operation). SET: Move to left digit. (Under setting mode). Long pressing to save setting or calibrate the reading. CAL: Move to right digit. (Under setting mode). MODE: Check pH in mV measurement. Select pH4, pH7, pH10 calibration mode. UNIT: Short pressing to change temperature unit ℃/℉. Long pressing to select temperature electrode type.

Short pressing to select NTC: Negative Temperature Coefficient)/ NOT: no remote temperature probe. Long pressing again to save electrode type.

HOLD: Freeze current readings (Hold shows at top of LCD). Increase value. (Under setting mode). ADJ: Decrease value. (Under setting mode). SET+UNIT: Recover to factory setting. (Under pH calibration mode) MODE+CAL: pH Calibration. HOLD+PWR: Disable Auto Power Off.

OPERATION pH INSTALLATION (BNC connector):

a) Insert the pH electrode into the top of right hole. And insert the 3.5mm Ø diameter phone jack ATC sensor

parts into the middle of hole.

b) Hold the BNC connector in one hand; with the other, insert the braid into the center of the connector.

Continuing pushing the braid into the connector until it will not go in any farther. Do this gently and slowly; do not bend the braid.

c) Turn the BNC connector in a clockwise direction, until you cannot turn it any more.

NOTE: Remove batteries when not use!

Power-off switch: When the meter is turned off, the internal CPU does not shut down completely, it will keep

detecting the buttons per milliseconds, letting meter know if the user wants to activate the meter or not. It will consume the power by each detecting, in order to save the power, you may pull down the switch.

NOTE: For each operation, make sure you are using fresh batteries, same brand, same power of batteries is

required, and

otherwise meter shows erratic readings or leakage. Warranty is void if not follow the notices. (Note：

remove batteries

when not use！)

1. Power supply: (a) AAA batteries x 3pcs. (b) Battery icon indicates when power is weak, replace with new batteries immediately as the readings now on

LCD are incorrect due to weak power.

Battery life: Approx. 50 hours for continuous used.

2. Make sure sensor electrode and meter are well connected. Don’t attempt to detach sensor probe from meter while in operation.

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3. When Meter shows erratic readings, it must be sensor failed or power is weak.

NTC 10K:

Negative Temperature Coefficient 25℃ = 10 K

NTC 30K:

Negative Temperature Coefficient 25℃ = 30 K

NOT:

External temperature probe is excluded, user can enter the temperature degree by their own temperature instrument, default: 25℃ Adjustable range: 0.0℃~90.0℃

4. Only select one of the two electrodes while measuring the same water zone, otherwise meter appears erratic readings. Read two parameters at the same time are only available for measuring two different water sources.

(1) POWER NOTE: Make sure you have connected the electrode to the meter before power on. Momentarily press PWR button to turn on the meter, press and hold PWR button to turn off meter.

(2) Check PH mV value Short press MODE to check pH in mV unit.

(3) CHANGE THE TEMP. UNIT TO ℃/℉ Short press UNIT button to toggle ℃ or ℉.

(4) HOLD Freeze the current readings of pH, then icon “Hold” will appear on the top left of screen.

(5) AUTO POWER OFF Meter will turn off automatically in 15 minutes when no use, to disable auto power off function by pressing HOLD and PWR button, “n” momentarily shows on screen, now meter is at non-sleep mode, then turns to

normal measurement, Meter default auto power off.

(6) FACTORY RESET

a) pH electrode Whenever replacing a new pH electrode. Long pressing MODE+CAL to enter pH calibration mode then strongly recommend doing factory reset by pressing SET+UNIT under pH4/7/10 calibration mode, screen will

show “rFS” momentarily.

(7) TEMPERATURE PROBE TYPE SELECTION NOTE: If using NTC 10K probe but select 30K type. The temperature value will not be accurate.

Default setting is NTC 10K. User can change it depends on the electrode type to get the correct value.

Step 1: Must select correct probe type before measurement, otherwise the value would be incorrect. Step 2: Long pressing UNIT button, the meter default is “ntc 10k”, short pressing UNIT button to toggle ntc 30k

→ not.

Step 3: Long pressing UNIT button again to save the setting, meter shows “SA” at the bottom of LCD and then

return to normal measurement mode.

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“ATC” ICON INDICATION

Probe type

ntc 10K (Default)

ntc 30K

not

Plug in

Temp. XX.X

Manual

temp.

Un-plugged

“─ ─ ─”

ATC icon

Calibration Points

Adjustable/Calibration range

pH4

3.75 to 4.25

pH7

6.75 to 7.25

pH10

9.75 to 10.25

pH/mV CALIBRATION PROCEDURE and MEASURING NOTE: When not use the electrode, it should immerse the “Electrode sensing head” into the “Protection bottle.” NOTE: Calibration is necessary before operation, the calibration procedures refer to as below“ a) to b)” : a) Required Equipment for calibration:

1) pH electrode.

2) pH buffer solution. NOTE: Make sure to use fresh solution each time due to the contaminants in the solution will affect the calibration and the accuracy.

b) Calibration Procedure:

1) Prepare the pH electrode, install the “probe plug” into the right “BNC port” of the meter.

2) Power on the meter by pressing PWR button.

3) Long pressing MODE + CAL buttons to enter pH calibration mode. Immerse the pH probe to pH buffer

solution. Meter will automatically recognize pH buffer values.

NOTE: Calibrating the pH in the incorrect buffer solution, “Er 3” will appear on the bottom of screen.

4) User can do 1, 2 or 3 points calibration.

Rinse the probe with de-ionized water before doing each pH buffer calibration. If you are doing multipoint calibration, short pressing MODE button to select pH 4 or pH7 or pH 10 calibration mode. HOLD: ↑to increase ADJ: ↓to decrease SET: ← to left digit CAL: → to right digit Referring to the Adjust range as below:

NOTE: Before doing pH 4, 7, 10 calibrations, if the value is out of above adjustable range, the meter

displays “CAL Err”. Please immerse the electrodes to distilled water or tap water to see if the value is

within the adjustable range first. After entering the calibration mode, immerse the electrode to calibration solution to do the calibration.

5) Long pressing SET button to save and complete calibration, then screen shows “SA”.

To escape calibration mode, long pressing MODE+CAL button, the bottom of screen will show “ESC” in few seconds and return to normal measurement mode.

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NOTE: After calibrating pH4 or pH10 by long pressing SET button, there is a slope value show in pH block

Slope Range

Description

Between 70%~130%

First clean the electrode and then calibrate.

<70% or >130%

You need to change the electrode, it is no longer usable.

in few seconds which stands for the electrodes conditions.

If the slope value is:

c) pH measurement (ATC, automatic Temperature):

NOTE: Without connecting ATC probe, the temperature value will display dashes“─ ─ ─”.

1) The pH electrode should be with ATC feature, and then immerse the sensing probe into the measurement solution until the value is stable.

2) The main display will show the pH value, the bottom display will show the sensing Temp. value of the measured solution (measured from ATC probe).

d) pH measurement (Manual Temp. compensation):

NOTE: This function is used for your pH electrode without connecting the ATC probe.

1) Power on the meter by short pressing PWR button.

2) Prepare the pH electrode, installing the “probe plug” into the right “BNC port” of the meter.

3) Adjust the manual Temp. value by following steps:

Long pressing UNIT button, the meter default is “ntc 10k”, short pressing UNIT button to select “not” type. HOLD: ↑to increase ADJ: ↓to decrease SET: ← to left digit CAL: → to right digit Long pressing UNIT again to save setting until screen shows “SA” and back to normal measurement mode.

4) Hold the Electrode Handle by hand and let the Sensing Head immersed wholly into the measured solution.

Stir gently and wait until the display be stabilized.

5) The main display will show the pH value, the bottom display will show the setting manual temperature.

e) pH convert to mV:

1) Under normal measurement mode, short pressing MODE button to toggle Cond. to mV measurement.

2) The display will show the mV value.

3) Short pressing MODE button again to return Cond. measurement.

ELECTRODE MAINTENANCE

Proper maintenance will ensure faster measurements, improve accuracy and extend the lifetime of the electrode.

pH probe

 When not in use

pH electrodes should be stored in pH electrode storage solution. This insures that the electrode glass remains hydrated, ready to measure accurately and quickly. The storage solution also helps keep the reference junction fully charged with KCl (Soaking solution). NOTE: Storing pH electrodes in distilled or deionized water is not recommended.

 User already use the electrode for a certain period

Whenever user cannot calibrate the meter properly or the meter’s reading value is not stable, please check

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the electrode to see if the electrolyte in the electrode is run out. If yes, please fill the electrolyte and make

Code

Description

- - -

The electrode was not in a solution. Dashes in the temp. mode indicates that probe without ATC or manual temp. setting. The electrode of cond. measured in pure water or ultra-pure water. Select the wrong temp. electrode type (refer to page 4).

OL2

Measurement is out of range of the display.

the new calibration.

 Electrode Cleaning Techniques

When your pH or ORP electrode gets slow, fouled and coated with contaminants, there are several things that you can do to restore performance. The reason for this is that the sensing glass membrane becomes coated. These coatings range from organics such as oil, grease, proteins to metal ions or other contaminants. Removing them usually requires soaking or washing in a solution which will remove the coating; similar to cleaning your eyeglasses.

a) Cleaning metal ions, some proteins and organics

Soaking the electrode in 0.01N. HCl for 10-20 minutes. Follow this by soaking in pH electrode storage solution for 1-2 hours. Rinse the electrode in deionized water, as usual, and recalibrate.

b) Cleaning grease and oils

Washing with acetone or methanol and then warm tap water and dishwashing liquid. Use care if cleaning mechanically as the pH or ORP glass is fragile. Electrodes washed in this manner also need to be conditioned by storing in pH/ORP electrode storage solution and recalibrated.

c) Salt Build-Up

Salt crystals can accumulate when water in a salt solution evaporates during contact with air. These salt crystals can be removed by rinsing the area with warm water.

TROUBLE SHOOTING Q1: pH display erratic readings or calibration errors?? A1: Air Bubble in Glass Bulb

During shipment, horizontal storage, and from general use, sometimes allowing air bubbles into the glass Bulb. Before each use, it is recommended to inspect that the glass bulb is no visible air bubbles.If there are, shake the electrode in a downward motion to force air bubbles out of the glass bulb.

Dirty Glass Bulb

Some contaminants remain on the glass surface. Refer to page 9 for specific guidelines for the most suitable cleaning solution for the specific contamination you have.

Un-plugged the electrode

The readings keep changing on the screen are not referable.

Q2: Wrong temperature?? A2: Refer to page 4 (pH TEMPERATURE PROBE TYPE), you must select the correct temperature sensor

type or adjust temperature manually (Long press UNIT button then press UNIT to select “not”).

Q3: Appear “Error codes”?? A3: Make sure if Hold is appeared on LCD. ERROR CODES

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WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 25 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal two (2) year product warranty to cover handling and shipping

time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of ha ving been tampered wi th or shows e vi d ence of havin g been dama ged as a result of e xcessive c orrosion; or c urrent, h eat, moi sture or vi bration; improp er specific ation ; m i sap plicatio n; misuse or other operat ing c o nd it ions o ut si de o f OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer s OM EGA neither a ssumes responsibil ity for a ny omissio ns or e rrors n o r assumes l ia bility for any damages that result from the use of its products in a cc ordance with informa t i o n p rovide d by OME G A , e i ther v erba l o r written. OMEGA warrants only that the p a rts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WA RRANTIES O R REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABIL I T Y AND FITNESS FOR A PARTICULAR PURPOSE A RE H EREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purch ase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on huma no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

total liability of OMEGA with respect to this order, whether

uggestions on the use of its various products. However,

ns, or misused in any way, OMEGA assumes

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS, for current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

Model and serial number of the product, and

3. Repair instructions and/or specific problems relative to the product.

consult OMEGA

M5743/0719