User Guide

4
FUNCTIONAL DESCRIPTION HI 931402
OFF
°C
ON
MR
°CMEM
RANGE CFM
COMM
CAL
HI 931402
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
2345 678
9
10
°C1
2
pH
pH
mV
CAL
MEM
NOT READY
CFM WRONG
BUF
1
23 4 5 6 7
COMBINATION
pH
ELECTRODE
REFERENCE
ELECTRODE
TEMPERATURE
PROBE
RESET
RS-232
DSR
RXD
TXD
DTR
GND
ooooo
oooo
5
1
96
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1. BNC Connector
2. Reference Electrode Connector (Ø 0.08")
3. Reference Electrode Connector (Ø 4 mm)
4. Temperature Probe Connector
5. Reset Button
6. RS 232C Connector
7. DC Power Socket (for HI 710005 or
HI 710006)
1. Liquid Crystal Display
2. MEM key to store a value in memory
3. MR key to recall the stored value
4. CAL key to enter and exit the calibration mode
5. CFM key to confirm calibration values
6. RANGE key to select the measurement range
7. COMM key to set the baud rate
8.
↑↑
↑↑
↑°C and
↓↓
↓↓
↓°C keys to manually set tempera-
ture and to select pH buffer values
9. ON to turn the meter on
10. OFF key to turn the meter off