Hach Ultra POLYMETRON 9210, Operator'S Manual

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Page 8
SILKOSTAT 9210
ANALYSIS
Value measured
dissolved SiO
2
Measurement field 0 – 1000 ppb 0 – 5000 ppb
Repeatability ±
2 % or
±
0,5 ppb
±
2 % or
±
2 ppb
Detection limit 0,5 ppb 2 ppb
INPUTS / OUTPUTS
Alarms Number : 8
Functions : - 6 threshold relays
/ lack of sample /
active channel
- System alarm
3 contacts
- 1 warning relay
Cut-off power : 30 VDC, 0.5 A
maximum
Logic inputs
Number : 12
Remote clearance
Inhibition of samples
Serial input interface RS 485, Modbus communication
protocol
Outputs 4 / 20 mA
Number : 8
4/20 mA / 0/20 mA
programmable.
Galvanically insulated
Maximum charge of 800 ohms
MATERIALS & PROTECTIONS
Transmitter Aluminium with polyester paint
Panels and other boxes Polystyrene
Protection transmitter box IP 65
Protection cabinet (optional) IP 54
Cabinet front door Plexiglas
Cycle time ∼
10 minutes per channel