The PHB21 series has been discontinued. Please see the PHB23 as a possible alternative or contact our Flow Engineering department.
The PHB21 is has a non-volatile memory
(E2PROM), that stores your set-up values.
Even under a loss of power condition your
records are maintained. The menus are
self-explanatory for easy operation and
programmed from a simple 3-key face.
The PHB21 benchtop meters also have
advanced features like automatic
electrode check and battery status
displays. The displayed readings can be
continuous, held or logged to memory. A user
programmable audible alarm is included for
minimum and maximum alerts.
pH Range: -2.00 to 20.00 pH Resolution: 0.1/0.01 pH Relative Precision: 0.01% (full scale)
mV Range: ±1999 mV Resolution: 1 mV Relative Precision: 0.05% (full scale) Temperature Range: 20 to 120ºC (68 to 248ºF) Resolution: 0.1ºC (32ºF) Relative Precision: 0.08% (full scale) General Input Impedance: 1013Ω Isopotential Adjust: ±50% Sensibility Adjust: 80 to 120% Temp. Compensation: Auto: (optional sensor) Manual: -20 to 120oC (68 to 248oF) Display: Alphanumeric 2 lines x 16 characters Datalogging: Up to 99 readings RS-232 output for PC or printer Alarms: Audible for maximum and minimum Dimensions: Meter: 100 L x 75 W x 180 mm D (3.9 x 3 x 7.1") Case: 400 x 400 x 130 mm (16 x 16 x 5") Weight: 0.45 kg (1lb) Enclosure: NEMA 4 (IP67) Power: 9 V battery (included),110/220 Vac 50/60 Hz (optional adaptor), battery life 60 hours
注: Comes with glass electrode, calibration buffers (4 and 7), 9 Vdc battery, operator’s manual (CD) and carrying case.