Page 281 - Eagle Scientific Ltd - Catalogue

ES pH Meters

pH METER, BENCH, CUSTOMISABLE ADVANCED RESEARCH GRADE, FLEXI-
BLE CALIBRATION, DATA LOGGING
Customisable advanced research grade digital pH, temperature, ORP and ISE bench
meter, with calibration check, USB & RS232 connection and data logging.
Features a large colour LCD with new and improved backlit display, capacitive touch
keys and USB port for computer connectivity.
pH calibration is available for up to five points and the CAL Check features ensures
accurate pH readings every time by alerting the user to potential problems during
calibration including if the buffer is contaminated or the probe needs to be cleaned.
The calibration data including date, time, buffers used, offset and slope can be
accessed at any time along with the current measurement by selecting the Good
Laboratory Practice (GLP) display option. As an ISE meter it can be calibrated up to
five points with a choice of five fixed standards or five user defined in any
concentration unit.
Three selectable logging modes are available: automatic, manual, AutoHold. Up to
100,000 data points can be recorded in 100 lots and can be transferred to a PC via
USB and software C51­5982 (optional).
Multi language support and contextual help through dedicated HELP key
Clear tutorial messaging on-screen - available from any mode
Supplied with pH electrode (C51­5048), temperature probe (C51­5974), probe
holder, 3M KCl electrolyte solution, pH calibration solution kit, capillary dropper
pipette, 12V DC power adapter, quality certificate and instruction manual.
Technical Data
C51-5981
Ranges: pH -2.0 to 20.0; -2.00 to 20.00; -2.000 to -20.000
mV ±2000
Temp. -20 to 120ºC
ISE: 1 x 10-6 to 9.99 x 1010 concentration
Resolution: pH 0.1; 0.01; 0.001
mV 0.1
Temp. 0.1ºC
ISE 1 x 10-6 to 9.99 x 1010 concentration
Accuracy: pH ±0.1; ±0.01; ±0.00; ±1 LSD
mV ±0.2, ±1 LSD
Temp. ±0.2ºC
ISE: ±0.5% (monovalent ions); ±1% (divalent ions)
Temp. Compensation: Automatic or Manual from -20.0 to 120.0°C
PC Connection: USB and RS232
GLP: Calibration points, calibration time stamp, probe offset, slope,
date, time, and buffers/standards used
Data Logging: Up to 100,000 data points can be recorded in 100 lots
C51-5981 pH Meter, Bench, Customisable Advanced Research Grade, Flexible
Calibration, Data Logging
Spare Parts and Accessories
C51-5048 Combination pH Probe, double junction, BNC connector with 1m
cable, spare
C51-5974 Temperature Probe, stainless steel, temperature range -20 to +120°C,
spare
C30-6010 Probe Holder, cantilever type, to attach to base of the meter, spare C51-5048 C51-5974
C51-5982 Software
C51-6123 RS232 to PC Cable

Solutions: C51­5042 to C51­5046 (Buffers) and C51-4010 (Calibration Kit) and
C51­5046 (KCl Electrolyte Solution)

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