Specifications - Extech Instruments 407227 User Manual

Specifications

General Specifications
Display
Input impedance
Temp. compensation for pH
pH electrode compatibility
Data hold
Memory recall
Auto Power OFF
PC Interface
Over range indication
Sampling time
Operating conditions
Power supply
Weight
Dimensions
Optional accessories
Range Specifications
Measurement
pH
mV
o
Temperature ( C)
o
Temperature ( F)
Meter Description
1. pH Electrode input (BNC jack)
2. RS-232 PC Interface jack
3. LCD display
4. Keypad
5. pH Electrode
6. Calibration potentiometers
7. Temperature sensor input jack
8. LCD Contrast adjustment wheel
9. Protective rubber holster
10. Battery compartment and tilt stand (rear)
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Dual function LCD with contrast adjust
12
10 ohms
Automatic and manual 32 to 149°F (0 to 65°C)
Any combination pH electrode with BNC connector
Freezes displayed reading
Records / Recalls MAX (maximum), MIN
(minimum), and AVG (average) readings
Meter powers off after 10 minutes
Serial RS-232 Communication
All dashes on display "- - - -"
Approximately 0.8 seconds
32°F to 122°F (0°C to 50°C); < 80% RH
9V battery (power consumption 5.7mA approx.)
0.59 lbs. / 270g (including batteries)
7.1 x 2.8 x1.3" (180 x 72 x 32mm)
ORP Electrode, AC adaptor, datalogger, and data
acquisition Windows
Range
0 to 14 pH
±1999 mV
o
0 to 50 C
o
50 to 65 C
o
32 to 122 F
o
122 to 149 F
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Resolution Accuracy (of reading)
0.01 pH ± (0.03 pH + 2 digits)
1 mV ± (0.5% + 1 digits)
o
0.1 C
o
0.1 F
1
2
3
4
5
6
Model 407227 Ver. 2.1 Oct. 2002
.com
o
± 1 C
o
± 4 C
o
± 1.8 F
o
± 7.5 F
7
8
9
10
1.877.766.5412