Extech Instruments 407227, Руководство пользователя

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8
407227_407228-en-GB_v3.2 10/18
Specifications
General Specifications
Display Dual function LCD with contrast adjust
Input impedance 10
12
ohms
Temp. compensation for pH Automatic and manual 0 ~ 65°C (32 ~ 149°F)
pH electrode compatibility Any pH electrode with BNC connector
Data hold Freezes displayed reading
Memory recall Records / Recalls MAX (maximum), MIN
(minimum), and AVG (average) readings
Auto Power OFF Meter powers OFF after 10 minutes
PC Interface Serial RS-232 communication
Over range indication All dashes on display "- - - -"
Sampling time Approximately 0.8 seconds
Operating conditions 0°C ~ 50°C (32°F ~ 122°F); < 80% RH
Power supply 9V battery (power consumption 5.7mA approx.)
Weight 270g (0.59 lbs.) including batteries
Dimensions 180 x 72 x 32mm (7.1 x 2.8 x1.3")
Optional accessories ORP Electrode (67500B)
AC adaptor: 156119 (120V), 156221 (220V)
Range Specifications
Measurement Range Resolution Accuracy (of reading)
pH 0 ~ 14 pH 0.01 pH ± (0.03 pH + 2 digits)
mV ±1999 mV 1 mV ± (0.5% + 1 digits)
Temperature (
o
C) 0 ~ 50
o
C
50 ~ 65
o
C
0.1
o
C ± 1
o
C
± 4
o
C
Temperature (
o
F) 32 ~ 122
o
F
122 ~ 149
o
F
0.1
o
F ± 1.8
o
F
± 7.5
o
F
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