Programming To Measure Ph - Hach LANGE si628 P Bedienungsanleitung

4. Operation

4.4. Programming to measure pH

This instrument is supplied programmed as a pH transmitter-controller with the configuration indicate-
din the Setting up, at the end of page 14.
M E A S U R E
pH 7.34 25.2 °C
CODE 000
Enter code 100
Limit 1 and Limit 2.
Selection of the functioning values
of the corresponding relays.
Input "ON" (closed contact).
Output "OFF" (open contact).
Selectable values between pH 0.0
and 14.0.
Output current.
Selection of pH values correspond-
ing to 4 mA and 20 mA.
Selectable values between
pH 0.0 and 14.0.
Hold. Selection of the current
output when the instrument is in
Hold state: fixed at 21 mA or at
the mA corresponding to the last
measured value.
Language.
Selection of the working language:
English, Spanish, Italian or French.
Note: When programming, the
instrument is in hold state:
•
The contact relays are open.
•
The current output is frozen at
21 mA.
To quit the hold state it is neces-
sary to return to MEASURE.
The output current and relays will
activated after 10 s.
16
si628 P_HACH_LANGE_Ed.0510.indd ANG:16 si628 P_HACH_LANGE_Ed.0510.indd ANG:16
To modify the default configuration and adapt it to specific applications
follow the diagram below.
CALIBRATION
LIMIT 1 (L1)
LIMIT 2 (L2)
OUTPUT 4-20 mA
HOLD
LANGUAGE
TYPE OF MEASURE
MEASURE pH & °C
ON - - L1 - - OFF
pH: 06.0 pH: 06.5
Vary the underlined digit with
and accept with
ON - - L2 - - OFF
pH: 08.0 pH: 07.5
4 mA 20 mA
pH: 0.0 pH: 14.0
> 21 mA
last
LANGUAGE > Español
Italiano
MEASURE OF: > pH
mV
MEASURE
pH 7.34 25.2 °C
20/5/10 11:24:23 20/5/10 11:24:23