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407227 数据表(PDF) 2 Page - Extech Instruments Corporation.

部件名 407227
功能描述  Heavy Duty pH, mV, & Temperature Meter
PDF  6 Pages
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制造商  EXTECH [Extech Instruments Corporation.]
网页  http://www.extech.com
标志 EXTECH - Extech Instruments Corporation.

407227 数据表(HTML) 2 Page - Extech Instruments Corporation.

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Model 407227 Ver. 2.1 Oct. 2002
Page 2
Specifications
General Specifications
Display
Dual function LCD with contrast adjust
Input impedance
1012 ohms
Temp. compensation for pH
Automatic and manual 32 to 149°F (0 to 65°C)
pH electrode compatibility
Any combination 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
32°F to 122°F (0°C to 50°C); < 80% RH
Power supply
9V battery (power consumption 5.7mA approx.)
Weight
0.59 lbs. / 270g (including batteries)
Dimensions
7.1 x 2.8 x1.3" (180 x 72 x 32mm)
Optional accessories
ORP Electrode, AC adaptor, datalogger, and data
acquisition Windows
TM software
Range Specifications
Measurement
Range
Resolution
Accuracy (of reading)
pH
0 to 14 pH
0.01 pH
± (0.03 pH + 2 digits)
mV
±1999 mV
1 mV
± (0.5% + 1 digits)
Temperature (
oC)
0 to 50
oC
50 to 65
oC
0.1
oC
± 1
oC
± 4
oC
Temperature (
oF)
32 to 122
oF
122 to 149
oF
0.1
oF
± 1.8
oF
± 7.5
oF
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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