Technical Data
pH 170/
pH 296
175
Redox measurement
Redox signal input
High impedance
Display and measuring
range
–
1000 mV to + 1000 mV
Measured value resolution
1 mV
Accuracy
± 2 mV ± 1 digit
Temperature
measurement
Temperature sensor
•
NTC (integrated in SensoLyt or external armatures)
•
PT 100 (3-line technology, direct via terminals)
•
PT 1000 (3-line technology, direct via terminals)
Accuracy
•
NTC
± 0.2 K ± 1 digit
•
PT100/PT 1000
± 0.1 K ± 1 digit
Additional fine adjustment of ± 0.5 K
Resolution
0.1 K
Inputs / outputs
Digital interface
RS-485; 2(3)-wire connection
Bus operation is possible with up to 31 units
Contact outputs
SENS-CHECK relay
Closes on sensor defect
Relay 1/ Relay 2
Functions, limit controller
•
Max. switching voltage 250 VAC
•
Max. switching current 5 A
•
Max. switching capacity 150 W (ohmic load)
Signal outputs
0/4 to 20 mA; electrically isolated from the input;
recorder ranges and recorder attenuation can be set
via software
•
Basic accuracy
0.1%
•
Load
max. 600 Ohm
•
Load effect
< 0.1 %
Connection terminals
Accessible on the instrument backplate
Connector cross section 0.5 to 2.5 mm
²
•
Power supply
2-contact
•
Relay 1/2
each 2-contact
•
SENS Check
2-contact
•
RS-485
3-contact
•
Recorder connections each 2-contact
•
Sensor
9-contact
