5
I. BNC Socket
II. Reference Electrode Socket
III. Reference Electrode Socket
IV. Temperature Probe Socket
V. Reset Button
VI. VDC Power Socket (for HI 710005 or HI 710006)
VII. RS 232C Socket
OFF
°C
ON
MR
°C
MEM
RANGE
CFM
COMM
CAL
HI 931401
MICROPROCESSOR
pH METER
CFM
Confirm when ready
/
Select buffer 2 value
CFM
Confirm when ready
/
Select buffer 1 value
CAL
Start calibration
pH calibration procedure
RANGE Select pH or ORP measurement
COMM
For RS232 configuration
MR
Recall previous stored data
MEM
For storing display result
Function
ins rum n s
1
2
3 4
5
6 7
8
9
10
°C
1
2
pH
pH
mV
CAL
MEM
NOT READY
CFM WRONG
BUF
FUNCTIONAL DESCRIPTION
H I 9 3 1 4 0 0 & H I 9 3 1 4 0 1
1. Liquid Crystal Display
2.
MEM
stores a value in memory
3.
MR
recalls the stored value
4.
CAL
enters or exits calibration mode
5.
CFM
confirms calibration values
6.
RANGE
selects measurement range
7.
COMM
sets baud rate
8.
↑↑↑↑↑
°C
and
↓↓↓↓↓
°C
manually set temperature and select pH
buffer values
9.
ON
turns meter on
10.
OFF
turns meter off
