TPS miniCHEM-pH, Руководство пользователя, Страница: 7 / 28

Page 7
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.