Instruction Manual
α
lpha-pH 550
Eutech Instruments
29
6. Technical Specifications
General Specification
(a) pH
Measuring Range
0.00 to 14.00 pH
Resolution 0.01
pH
Accuracy
± 0.01 pH
(b) mV
Measuring Range
-1000 to 1000 mV
Resolution 1
mV
Accuracy
± 1 mV
(c) Temperature
Measuring range
-10.0 to +125.0
o
C or +14.0 to +257
o
F
Resolution 0.1
o
C
0.1
o
F (Resolution is 0.1
o
F up to 199.9
o
F and 1
o
F for
200
o
F and above)
Relative accuracy
±0.5
o
C
±1.0
o
F
Sensor
2 wire / 3 wire - Pt100 or Pt1000 (Jumper Selectable)
Compensation
Automatic or Manual
Calibration
(a) pH
Number of calibration points
1 or 2 points
Number of calibration buffers
USA: 1.68,4.01, 7.00, 10.01,12.45
NIST: 1.68,4.01, 6.86, 9.18 ,12.45
(b) Temperature
Offset Adjustment
± 10
˚
C/ ± 18
˚
F
Input /Output
Input
Asymmetrical / Symmetrical
Output None
Display
LCD
7 segments display with symbols for status information
Electrical Data and Connections
pH/mV Input
Screw Terminal (3.5mm pitch)
Connection terminal
8-pin & 2-pin terminal blocks
Other
Power Input
Uni9 V DC Adaptor and 24V DC Supply
Dimensions (W x H x D)
96mm x 96mm x 66 mm
Weight (Estimated)
210g
Ambient Temp. operating range
0 to 40
o
C
Maximum Relative Humidity
80% up to 31
o
C decreasing linearly to 50% at 40
o
C