Specifications – Hach-Lange SI794 P User Manual User Manual
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96
pH/mV input
Input for pH or ORP electrodes or ISFET sensors
Measuring range
-1500 ... +1500 mV
Display range
pH value
-2.00 ... 16.00
ORP
-1999 ... +1999 mV
Glass electrode input
1
Input resistance
> 0.5 x 1012 ohms
Input current
< 2 x 10-12 A
Reference electrode input
1
Input resistance
> 1 x 1010 ohms
Input current
< 1 x 10-10 A
Meas. error
1,2,3
pH value
< 0.02
TC: 0.002 pH/K (display)
mV value
< 1 mV
TC: 0.1 mV/K
pH sensor standardization *
pH calibration
Operating modes
BUF
Calibration with Calimatic automatic buffer
recognition
MAN
Manual calibration with input of individual
buffer values
DAT
Data entry of pre-measured electrodes
Zero adjustment
±200 mV
Max. calibration range
Offset: ±60 mV
Slope: 80 ... 103 % (47.5 ... 61 mV/pH)
ORP sensor standardization * ORP calibration
Max. calibration range
-700 ... +700 ∆mV
Cal timer
0000 ... 9999 h
Sensocheck
Automatic monitoring of glass and reference
electrode (can be disabled)
Sensoface
Provides information on the sensor condition,
evaluation of zero/slope, response time,
calibration interval, Sensocheck
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