Emerson Rosemount 1056, Instruction Manual

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1.11 Turbidity (Code 27 and 37)
The 1056 instrument is available in single and dual tur-
bidity configurations for the Clarity II
®
turbidimeter. It is
intended for the determination of turbidity in filtered
drinking water. The other components of the Clarity II
turbidimeter – sensor(s), debubbler/measuring cham-
ber(s), and cable for each sensor must be ordered
separately or as a complete system with the Model
1056.
The 1056 turbidity instrument accepts inputs from both
USEPA 180.1 and ISO 7027-compliant sensors
When ordering the Model 1056 turbidity instrument, the
02 (24VDC power supply) or the 03 (switching
115/230VAC power supply) are required. Both of these
power supplies include four fully programmable relays
with timers.
Note: Model 1056 Turbidity must be used with Clarity
II sensor, sensor cable and debubbler.
Performance Specifications
Units: Turbidity (NTU, FTU, or FNU); total suspended
solids (mg/L, ppm, or no units)
Display resolution-turbidity: 4 digits; decimal point
moves from x.xxx to xxx.
Display resolution-TSS: 4 digits; decimal point moves
from x.xxx to xxxx
Calibration methods: user-prepared standard, com-
mercially prepared standard, or grab sample. For total
suspended solids user must provide a linear calibration
equation.
Inputs: Choice of single or dual input, EPA 180.1 or
ISO 7027 sensors.
Field wiring terminals: removable terminal blocks for
sensor connection.
Accuracy after calibration at 20.0 NTU:
0-1 NTU ±2% of reading or 0.015 NTU, whichever is
greater.
0-20 NTU: ±2% of reading.
Clarity ll Turbidimeter
10
Instruction Manual
LIQ-MAN-1056
Section 1.0: Description and Specification
April 2017