| Size (HxWxD): |
2.9 x 11.3 x 7.5 in (74 x 287 x 191 mm) |
| Weight: |
2.0 lb (0.9 kg) |
| Materials of construction: |
High-impact polystyrene, stainless steel |
| Enclosure (self-certified): |
NEMA 4X, 6P (IP68) |
| Temperature Range: |
-40° to 140° F (-40° to 60° C) operating and storage |
| Power Required: |
12 VDC nominal (7.0 to 16.6 VDC), 100 mA typical, 1 mA standby |
| Power Source: |
Typically, a Teledyne Isco 2191 Battery Module, containing 2 alkaline or 2 rechargeable lead-acid batteries. (Other power options are available; ask for details.) |
| Typical Battery Life: |
(using 15-minute data storage interval) Energizer® Model 529 alkaline – 15 months; Teledyne Isco rechargeable lead-acid – 2.5 months |
| Program Memory: |
Non-volatile programmable flash; can be updated using PC without opening enclosure; retains user program after updating. |
| Built-in Conversions |
| Flow Rate Conversions: |
Up to 2 independent level-to-area conversions and/or level-to-flow rate conversions. |
| Level-to-Area Conversions: |
Channel Shapes – round, U-shaped, rectangular, trapezoidal, elliptical, with silt correction; Data Points – Up to 50 level-area points. |
| Level-to-Flow Conversions: |
Most common weirs and flumes; Manning Formula; Data Points (up to 50 level-flow points); 2-term polynomial equation |
| Total Flow Calculations: |
Up to 2 independent, net, positive or negative, based on either flow rate conversion |
| Data Handling and Communications |
| Data Storage: |
Non-volatile flash; retains stored data during program updates. Capacity 395,000 bytes (up to 79,000 readings, equal to over 270 days of level and velocity readings at 15-minute intervals, plus total flow and input voltage readings at 24-hour intervals) |
| Data Types: |
Level, velocity, flow rate 1, flow rate 2, total flow 1, total flow 2, input voltage, temperature |
| Storage Mode: |
Rollover; 5 bytes per reading. |
| Storage Interval: |
15 or 30 seconds; 1, 2, 5, 15, or 30 minutes; or 1, 2, 4, 12, or 24 hours; Storage rate variable based on level, velocity, flow rate, total flow, or input voltage |
| Data Retrieval: |
Serial connection to PC or optional 2101 Field Wizard module; optional modules for spread spectrum radio; land-line or cellular modem; 1xRTT. Modbus and 4-20 mA analog available. |
| Software: |
Teledyne Isco Flowlink for setup, data retrieval, editing, analysis, and reporting |
| Multi-module networking: |
Up to four 2100 Series Flow Modules, stacked and/or remotely connected. Max distance between modules 3300 ft (1000 m). |
| Serial Communication Speed: |
38,400 bps |
| 2150 Area Velocity Sensor |
| Size (HxWxD): |
0.75 x 1.3 x 6.0 in (19 x 33 x 152 mm) |
| Cable (Length x Diameter): |
33 ft x 0.37 in (10 m x 9 mm) standard. Custom lengths available on request. |
| Weight (including cable): |
2.2 lbs (1 kg) |
| Materials of construction: |
Sensor – Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel; Cable – Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) |
| Operating Temperature: |
32° to 140° F (0° to 60° C) |
| Level Measurement |
| Method: |
Submerged pressure transducer mounted in the flow stream |
| Transducer Type: |
Differential linear integrated circuit pressure transducer |
| Range: |
Standard: 0.033 to 10 ft (0.010 to 3.05 m)
Optional: up to 30 ft (9.15 m) |
| Maximum Allowable Level: |
34 ft (10.5 m) |
| Accuracy: |
±0.01 ft from 0.033 to 10 ft (±0.003 m from 0.01 to 3.05 m) |
| Long-Term Stability: |
±0.023 ft/yr (±0.007 m/yr) |
| Compensated Range: |
32° to 122°F (0° to 50°C) |
| Velocity Measurement |
| Method: |
Doppler ultrasonic, frequency 500 kHz |
| Typical Minimum Depth: |
0.08 ft (25 mm) |
| Range: |
-5 to +20 ft/s (-1.5 to +6.1 m/s) |
| Accuracy: |
(in water with uniform velocity profile, speed of sound = 4,850 ft/s, for indicated velocity range); ±0.1 ft/s from -5 to 5 ft/s (±0.03 m/s from -1.5 to +1.5 m/s); ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s) |
| Temperature Measurement |
| Accuracy: |
±3.6° F (±2° C) |
| 2191 Battery Module |
| Size (HxWxD): |
6.0 x 9.6 x 7.6 in (152 x 244 x 193 mm) |
| Weight (without batteries): |
3.2 lb (1.4 kg) |
| Materials of construction: |
High-impact polystyrene, stainless steel |
| Enclosure (self certified): |
NEMA 4X, 6P, (IP68) |
| Batteries: |
Two 6-volt Energizer Model 529* alkaline (25 Ahrs capacity) or Teledyne Isco Rechargeable Lead-acid (5 Ahrs capacity) recommended. *Note – Energizer 529 ER does not give specified life. |
