Knick PORTAVO 904X PH, User Manual

Page: 46 / 68

46
pH/mV input pH socket DIN 19 262 (13/4 mm)
pH measuring range -2 … 16
Decimal places*
)
2 or 3
Input resistance
1 x 10 12 Ω (0 … 35 °C/32 … 95 °F)
Input current 1 x 10 -12 A (at RT, doubles every 10 K)
Measuring cycle Approx. 1 s
Measurement error 1,2,3) < 0.01 pH, TC < 0.001 pH/K
mV measuring range –1300 … 1300 mV
Measuring cycle Approx. 1 s
Measurement error 1,2,3) < 0.1 % of measured value + 0.3 mV, TC < 0.03 mV/K
Temperature input 2 x Ø 4 mm for integrated or separate temperature probe
Measuring ranges NTC30 temp. detector -20 … 120 °C/-4 … 248°F
Pt1000 temp. detector -40 … 250 °C/-40 … 482 °F
Measuring cycle Approx. 1 s
Measurement error
1,2,3)
< 0.2 K (T
amb
= 23 °C/73.4 °F); TC < 25 ppm/K
Specifications
*) User-defined
1) At rated operating conditions
2) ± 1 digit
3) Plus sensor error
4) Ranges dependent on Memosens sensor
Memosens pH input
(also ISFET)
M8 socket, 4-pin, for Memosens laboratory cable
Display ranges 4) pH -2.00 … 16.00
mV –2000 … 2000 mV
Temperature -50 … 250 °C/-58 … 482 °F
Memosens input
ORP
M8 socket, 4-pin, for Memosens laboratory cable
Display ranges
4)
mV –2000 … 2000 mV
Temperature -50 … 250 °C/-58 … 482 °F
Specifications