Hach-Lange SI794 P User Manual - Manual (Page 96)

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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
Specifications