User Guide

98
Range pH -1.999 to 19.999
mV ±1999.9
ppm 0.001 to 19999
°C -9.9 to 120.0
Resolution pH 0.01 or 0.001
mV 0.1
ppm 0.001 (from 0.001 to 9.999)
0.01 (from 10.00 to 99.99)
0.1 (from 100.0 to 999.9)
1 (from 1000 to 19999)
°C 0.1
Accuracy pH ±0.002
(@20°C/68°F)m V ±0.1 (±799.9) / ±0.2 (±1999.9)
ppm ±0.5%
°C ±0.5
Typical EMC pH ±0.01
Deviation mV ±0.3
ppm ±1%
°C ±0.5
pH Calibration Automatic 1, 2 or 3 points with
6 memorized buffers
(1.68, 4.01, 6.86, 7.01, 9.18, 10.01)
pH Offset Max ±60mV or ±1pH
pH Slope 70-108%
ppm Calibration Automatic 1 or 2 points with
5 memorized buffers
(0.1, 1, 10, 100, 1000)
ppm Offset Max ±1999.9mV
ppm Slope From ±20mV to ±100 mV
[mV/log(0.001xppm)]
Temperature Automatic 1 or 2 points with
Calibration 2 memorized values (0 and 50°C)
Temperature Automatic or manual (for pH only)
Compensation from -9.9 to 120°C (14 to 248°F)
Electrode HI1131B glass body combination
refillable pH electrode (included)
Temperature HI 7669/2W with 1 m
probe (3.3') cable (included)
Input impedance 10
12
Ω
Logging Interval 1, 15, 30 seconds or
1, 5, 30, 60, 120, 180 minutes
PC Interface RS 232 (optoisolated)
Power supply 12 VDC (CSA, UL & CE approved)
Environment 0 to 50°C (32 to 122°F); 95% RH
Dimensions 280x200x75mm (11x7.9x3")
Shipping Weight 1.3 kg (2.9 lb.)
SPECIFICATIONS pH 301
Keyboard on the Left
• CAL to start the calibration mode for pH,
mV and ION. To set or quit the date or
time setting mode. Used also during log-
ging (to start logging press pH, mV or ION
plus LOG plus CAL key; to stop logging
press LOG plus CAL key).
• CFM to confirm calibration values.
• COMM to display the current baud rate
and command prefix for RS232.
• DATE to display the date.
• RANGE to display the calibration buffer
or the temperature on the secondary LCD
during calibration. During setting of the
date, to toggle between month, day and
year. During setting of the time, to toggle
between minutes, seconds and logging in-
terval.
• TIME to display the time.
Keyboard on the Right
•
!!
!!
!°C and
""
""
"°C to manually set tempera-
ture (when the temperature probe is not
connected) and to select the calibration
buffer, the date and time, the baud rate,
the command prefix.
• CAL DATA to display the date of last pH
calibration. This also displays the offset
and the slope 1 or slope 2 values ex-
pressed in mV.
• ION to select the ION measurement range.
• mV to select the mV measurement range.
• pH to select the pH measurement range.
• .00/.000 to select two or three decimal
points for pH measurements.