Hanna Instruments pH 20 - Manual (Page 3)

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SPECIFICATIONS
FUNCTIONAL DESCRIPTION
1. Liquid Crystal Display
2. CAL key, to enter and exit the calibration mode
3. CFM key, to confirm calibration values
4.
↑↑↑↑↑
°C and
↓↓↓↓↓
°C keys, to manually set temperature value for
compensation
5. HOLD key, to freeze reading on display
6. RANGE key, to select measurement range
7. ON/OFF key, to turn the meter on and off
+ -
Note: These instruments use the following configuration.
It is recommended to use the Hanna HI 710005 or HI 710006
voltage adapters (supplied with the meter) which are provided with
the proper polarity configuration.
The meters can also be powered with other adapters. In this case,
remember to check the correct polarity of the adapter before connect-
ing it to the meter.
REAR PANEL
1. BNC connector for pH or ORP (pH 21 only) electrode.
2. Temperature probe socket for use with the HI 7662.
3. Power supply input. Plug the 12 Vdc adapter into the DC socket,
then into the mains.
Notes:
•
Make sure the mains line is protected by a fuse.
• If the instrument needs to be unplugged, press the ON/OFF
key before disconnecting it from the mains.
Range pH 0.00 to 14.00
ORP ±1999 mV (pH 21 only)
°C 0.0 to 100.0
Resolution pH 0.01
ORP 1 mV (pH 21 only)
°C 0.1
Accuracy pH ±0.02
(@20°C/68°F) ORP ±2 mV (pH 21 only)
°C ±1
pH Calibration Automatic, 1 or 2 point
Temperature Automatic (with temperature probe) or
Compensation manual (adjustable with arrow keys)
pH Electrode HI 1110B combination pH electrode
with BNC and 1 m cable (included)
Temperature probe HI 7662 (optional)
Power supply 12 Vdc adapter (included)
Environment 0 to 50°C (32 to 122°F)
RH max 95% non-condensing
Dimensions 230 x 170 x 75 mm (9.1x6.7x 3")
Weight 500 g (1.1 lb.)