Microphone User Manual

instrument's power supply is disconnected before the meter is switched

off. Press the RESET button and restart the entire operation.

Power connection

Plug the 12VDC adapter (HI710005 or HI710006) into the socket on

the back of the meter (#5).

Note: Make sure your main line is protected by a fuse.

Note: HI8521 uses a rechargeable battery to retain the pH calibra-

tion data. It lasts approximately one month when fully charged.

The battery is automatically charged any time the meter is

plugged-in (either turned on or off).

SPECIFICATIONS HI 8521

Range pH 0.00 to 14.00

ISE 0.0 to ±399.9mV

ORP 0 to ±1999mV

°C 0.0 to 100.0

Resolution pH 0.01

ISE 0.1mV

ORP 1mV

°C 0.1

Accuracy pH ±0.01

(@20°C / 68°F) ISE ±0.2mV

ORP ±0.1mV

°C ±0.4

Typical EMC pH ±0.05

Deviation ISE/ORP ±4mV

°C ±0.1

Calibration Automatic 2 points with auto-buffer

recogntion

Temperature Automatic or Manual

Compensation From 0 to 100°C (32 to 212°F)

Electrode HI 1332B plastic body, combination,

double junction refillable

pH electrode (included)

Temperature Probe HI 7669/2W temp. probe (included)

Input Impedance 10

ohm

Power 12VDC power

Environment 0 to 50°C (32 to 122°F); 95% RH

Dimensions 230x170x70 mm (9.1x6.7x2.7")

Shipping Weight 1.4 Kg (3.1 lb.)