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Rosemount
Rosemount T1056 Clarity II Turbidimeter
Quote on request
No online payment · add lines to RFQ BOM
Clarity II; 0–200 NTU; 0.001 NTU; EPA/ISO sensors. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
After cal at 20.0 NTU: 0–1 NTU ±2% of reading or ±0.015 NTU (whichever greater); 0–20 NTU ±2% of reading
Wetted parts
Delrin, glass, EPDM (sensor/chamber)
Ambient temperature
32 to 131 °F (0 to 55 °C); turbidity-only 32 to 122 °F (0 to 50 °C); RH 5–95% non-condensing
Measurement Range
0 to 200 NTU class (display resolution 0.001 NTU; accuracy stated after 20.0 NTU calibration for 0–1 and 0–20 NTU bands)
Resolution
0.001 NTU (four-digit display; decimal shifts across 0.001–1000 class ranges)
Sensor Methods
US EPA 180.1 (incandescent) or ISO 7027 (860 nm LED); specified at order
Fits drinking-water and process turbidity monitoring where you need a Rosemount T1056 Clarity II system covering 0–200 NTU with 0.001 NTU resolution and EPA 180.1 or ISO 7027 sensor options.
Key advantages
- Range / resolution — 0–200 NTU; 0.001 NTU display
- Accuracy — After 20 NTU cal: 0–1 NTU ±2% or ±0.015 NTU; 0–20 NTU ±2%
- Sensors — US EPA 180.1 or ISO 7027 compliant options
- Transmitter — 1056-based; 2× 4–20 mA; 4 relays; HART option
- System — Analyzer + sensor(s) + debubbler; single or dual input
Typical applications
- Filtered drinking-water turbidity.
- Wastewater discharge monitoring.
- Clarifier and condensate turbidity.
Selection guide
- EPA vs ISO sensor
- Single vs dual input
- Panel vs back-plate system
- HART — Digital need
Common mistakes
- Skipping debubbler on bubbly samples.
- Infrequent cleaning at higher NTU.
- Wrong sensor standard for jurisdiction.
When to RFQ / what to tell us
- Sensor standard, single/dual, mount.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 31292 |
| Brand | Rosemount / Emerson |
| Model | T1056 Clarity II |
| Product type | Turbidimeter |
| Type | Clarity II turbidity measurement system (analyzer + sensor + debubbler) |
| Range | 0–200 NTU |
| Resolution | 0.001 NTU |
| Accuracy | After cal at 20 NTU: 0–1 NTU ±2% rdg or ±0.015 NTU; 0–20 NTU ±2% rdg |
| Sensors | US EPA 180.1 or ISO 7027 compliant options |
| Transmitter | Based on Rosemount 1056; 2× 4–20 mA; 4 alarm relays; HART option |
| Enclosure | Polycarbonate Type 4X / IP65; ½ DIN 155×155×131 mm |
| Inputs | Single or dual turbidity sensor inputs |
Documents
FAQ
Q: Range? A: 0–200 NTU with 0.001 NTU resolution.
Q: Sensor standards? A: US EPA 180.1 or ISO 7027 options.
Q: What should I send for a quote? A: Sensor/config, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | After cal at 20.0 NTU: 0–1 NTU ±2% of reading or ±0.015 NTU (whichever greater); 0–20 NTU ±2% of reading |
| Wetted parts | Delrin, glass, EPDM (sensor/chamber) |
| Ambient temperature | 32 to 131 °F (0 to 55 °C); turbidity-only 32 to 122 °F (0 to 50 °C); RH 5–95% non-condensing |
| Measurement Range | 0 to 200 NTU class (display resolution 0.001 NTU; accuracy stated after 20.0 NTU calibration for 0–1 and 0–20 NTU bands) |
| Resolution | 0.001 NTU (four-digit display; decimal shifts across 0.001–1000 class ranges) |
| Sensor Methods | US EPA 180.1 (incandescent) or ISO 7027 (860 nm LED); specified at order |
| Outputs | Two isolated 0–20/4–20 mA (max load 550 Ω); optional HART on Output 1; four Form-C SPDT alarm relays |
| Enclosure | Polycarbonate Type 4X/CSA 4 (IP65); overall 6.10×6.10×5.5 in (155×155×131 mm); ½ DIN cutout |
| Power | 20–30 Vdc (−02) or 85–265 Vac 47.5–65 Hz (−03); 15 W min |
| Sensor Cable | 20 ft (6.1 m) or 50 ft (15.2 m) max; IP65 connector when mated |
| Sample Temperature | 40 to 95 °F (5 to 35 °C); max pressure 30 psig (308 kPa) |
| System Contents | Single/dual-input 1056 analyzer + sensor(s) + debubbler/measuring chamber + cable per sensor |
| Document | PDS 00813-0100-3560 Rev AC May 2024 |