TPS miniCHEM-pH - Specifications

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1.3 Specifications
Range.............................................................................................0 to 14.00 pH
Resolution .............................................................................................. 0.01 pH
Accuracy.............................................................................................. ±0.01 pH
Linearity............................................................................................... ±0.01 pH
Repeatability......................................................................................... ±0.01 pH
Ambient Drift ............................................................. <0.01 pH per 10
o
C change
Long term drift ............................................................................ <0.1% per year
Input Impedance ................................................................................>3 x 10
12
Ω
Asymmetry Range................................................................................. ±1.00 pH
Slope Range.......................................................................................80 to 110%
Temperature Compensation.............Automatic, 0 to 100.0
o
C (with ATC Sensor),
or fixed at 25
o
C with 12K resistor.
Common Mode Rejection..........................................................................120 dB
Enclosure........................................................ Polycarbonate, waterproof to IP65
Display...........................................12.7 mm LCD (optional remote 4-20mA loop
powered display available)
Analogue Outputs............................4 to 20mA (500 Ohms max. loop resistance )
0 to 1 V DC (min. load 1000 Ω)
0 to 10 V DC optional (min. load 1000 Ω)
Control Output (optional).....................................Clean contact changeover relay,
rated to 2A at 240V AC
Isolation............................................................Galvanic isolation of sensor input
Power.....................................................240V AC, 50/60Hz (120V AC optional)
Dimensions............................................................................172 x 160 x 71 mm
Mass ...................................................................Instrument only : Approx 800g
Full Kit : Approx 1.5kg
Operating Environment: .......................................Temperature : 0 to 45
o
C
Humidity :0 to 95 % R.H.