Metrohm 827 pH lab Manual do Utilizador descarregar pdf (Página 54)

8.2 Messages

46 826/827 pH meter, Instructions for Use

Message Situation Cause Remedy

battery low Mode pH/U/T The batteries are almost

empty

Change batteries (see Sec-

tion 8.4.1)

buffer error calibration Buffer not recognized 1. Replace buffer

2. Press

<OK>

buffer not de-

fined

calibration pH value of a buffer has

not been defined for the

given temperature

pH values are only defined

in the range of 0 ... 95 °C

calibration OK

calibration Calibration has been con-

cluded successfully

Exit display with <OK> or

<QUIT>; this happens au-

tomatically after 30 s; cali-

bration data will be ac-

cepted in either case

cal. interval

exp.

mode pH Set calibration interval has

expired

Recalibrate electrode (see

Section 6.1.2

cal. out of

limits

calibration Determined calibration

data are outside limits de-

fined as calibration para-

meters

Accept calibration data with

<OK> or reject them with

<QUIT>; check electrode,

buffer or limits under 6.1.2 /

6.1.3

change buffer

<OK>

calibration Instrument is waiting for

new buffer

1. Change buffer

2. Press

<OK>

check T sensor

Mode T Temperature sensor is faul-

ty or not connected

Connect a properly function-

ing temperature sensor

delta T >2 °C calibration Temperature difference

between two buffers is too

large

1. Match temperatures

2. Continue with <OK> or

cancel with

<QUIT> and

restart

Err #X System test after

switch on

pH meter fault 1. Note error number

2. Contact Metrohm Service

IR off Print report /

measured value

The IR interface is not acti-

vated

Activate the IR interface (see

Section 5.4

manual stop calibration The calibration has been

stopped manually

mv memory

overflow

Saving measured

values

Attempt made to store a

further measured value

when 200 have already

been stored

Delete measured values

(see

Section 7.2)

no IR connec-

tion

No connection with printer 1. Press <QUIT>

2. Switch on printer

3. Switch pH meter off and

on again

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