SC250 TTELEC | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 8
Technical content
© TT electronics plc Issue C 02/2023 Page 1 TT Electronics | Roxspur Measurement & Control
2 Downgate Drive, Sheffield, South Yorkshire, S4 8BT, UK |Ph: +44 (0) 114 -244-2521
www.ttelectronics.com | sheffield.admin@ttelectronics.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Features Continued:
- Flow rate (model SC250)
- Water: 16 l/h — 30m3/h
- Air: 500 NI/H — 900Nm3/h
- Accuracy: 2.5% (qG=50%) / 1.6% (qG=50%) on request
- Connections:
- Model SC250: DN15 — DN80
- EN1092-1 or ANSI flanges. Other flange standards on request (JIS,…)
- Threaded connections BSP or NPT
- Other connections available on request
- Materials: EN 1.4404 (AISI 316L), other materials available on request
- Local indication
- Options:
- 1 or 2 limit switches
- Electronic transmitter with 4-20mA analog output for safe or hazardous area (EX ia IIC T4 or T6 protection, ATEX certified). HART protocol available on request
- Local volume totalizer. Remote volume totalizer by means of pulse output (not available for Ex transmitters) Description: Flowmeters are based in the variable area principle. The metering system consists on a calibrated orifice and a conical float. The force from the fluid, as it flows from the bottom to the top, displaces the float until it reaches an equilibrium point that is a function of:
- E = force of the fluid flow
- Pf = weight of the float
- AI = free area of flow (AI= Ao, calibrated orifice area, - Af, float area) Each float position represents an area between the float and the orifice. This area corresponds to a flow rate. Applications:
- Water treatment plants, pulp & paper and food industry
- Pharmaceutical, chemical and petrochemical industry
- Power plants and nuclear generating plants
- Heating and cooling circuits
- Saturated steam circuits
- Oven treatments and control of gas burners Features:
- Metallic tube with a robust construction
- Indication by means of magnetic coupling
- High performance measurement in extreme working conditions and high resistance to corrosion
- Low pressure drop
- Damping mechanism to avoid float bounces in gas and steam applications Ao = calibrated orifice area Af= float area Pf= weight of the float E= force of the fluid flow AI= Ao-Af = free area of flow
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 2 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com SC250/INOX (EN 1.4404 — AISI 316L) PN40 DN15...DN50 PN16 DN80 Others on request Working Pressure Model SC250 Technical Data Accuracy, acc. To VDI/VDE 3513 sheet 2 (qG = 50%) 2.5% / 1.6% on request Direct scales in engineering units or in % Scale range 10:1 Fluid density No restrictions Fluid viscosity Up to 10mPas approx., depending on flow rate Fluid Temperature EN 1.4404 (AISI 316L) -50°C — +300°C Ambient Temperature EN 1.4404 (AISI 316L) & PTFE -5°C — +40°C
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 3 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Materials N° Description Materials
1 Enclosure Coated aluminium
2 Window Polycarbonate (UV resistant)
3 O-rings NBR
4 Flange seat EN 1.4404 5 Float EN 1.4404 6 Flow tube EN 1.4404 7 Flanges EN 1.4404 Connections:
- DN15...DN80 EN 1092-1 flange or ANSI equivalent. Other flange standards on request (JIS,…)
- Threaded connections BSP or NPT Housing:
- IP65—coated aluminum. EN 1.4404 (AISI 316L) with glass window, on request Operations:
- Vertical with upwards flow (BD) Limit Switches and Transmitters:
- SC-AMD1...2: 1 or 2 adjustable inductive detectors (+ relays on request)
- TH7T Ex...: 4-20mA transmitter + totalizer 2 wires Ex ia IIC T4 or T6 (ATEX). HART protocol is available on request. DN15...DN80 The tapered floats are constructed in AISI 316L as standard or other materials on request, according to the characteristics of the process fluid. The maximum working viscosity for these floats is 10 mPa•s approx., depending on flow rate.
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 4 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Models SC250 Threaded connection BSP/NPT (EN 1.4404) L 313 282 285 305 305 282 D 37 40 55 65 80 35 A 118 118 124 129 135 114 E/C 32 35 45 60 70 30 DIN EQ. 15 15 25 40 50 15 (PC)* *Max flow rate 250 l/h H2O Dimensions
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 5 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Dimensions EN1092-1 flanges (dimensions in mm) A C max DN PN Ø D Ø k Ø g Ø l x n B SC250 SC250 L Weight kg 15 40 95 65 49 14 x 4 16 133 38 250 3.5 25 40 115 85 68 14 x 4 18 146 38 250 4.5 40 40 150 110 88 18 x 4 18 154 40 250 7.3 50 40 165 125 102 18 x 4 20 167 40 250 8.3 80 16 200 160 138 18 x 8 20 148 40 250 12
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 6 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Dimensions ANSI flanges (dimensions in mm) A C max DN Pressure class lbs Ø D Ø k Ø g Ø l x n B SC250 SC250 L Weight kg 3” 150 190.5 154.2 127 19.05 x 4 23.8 148 40 250 20 Flow Ranges
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 7 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Adjustable limit switch SC-AMD NAMUR (EN 60947-5-6) 3.5mm slot type inductive detector activated by vane, mounted in the indicator housing.
- SC-AMD1...2: 1 … 2 adjustable limit switches
- Power supply: 8 VDC
- Ambient temperature: -25°C — +70°C
- ATEX certificate Ex ia IIC T6 Control relay (on request) NAMUR (EN 60947-5-6) for 1 or 2 inductive detectors.
- Power supply: 24...253 VAC 50-60Hz 24...300 VDC
- Input: NAMUR Ex ia IIC
- Output: 1 or 2 relay contacts
- Output rating: 2A 250VAC 100VA / 1A 24VDC
- Ambient temperature: -20°C — +60°C SC-AMD Modular housing
© TT electronics plc General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics ’ own data and is considered accurate at time of going to print. Issue C 02/2023 Page 8 TT Electronics | Roxspur Measurement & Control www.ttelectronics.com | sheffield.admin@ttelectronics.com Transmitter and Totalizer Transmitter TH7T The TH7T electronic transmitters provide an analog output proportional to the flow rate and a digital output. They include a display for volume totalization. They are based on the Hall effect and mounted inside the indicator housing.
- TH7T Transmitter + totalizer
- Optional HART protocol version available
- TH7TH Transmitter + totalizer + HART protocol TH7T Ex Both limit switches AMD and electronic transmitters TH7T can be mounted together in the same housing. The TH7T Ex transmitters belong to group II. They are intended for use in potentially explosive atmospheres, except in mining. ATEX version (EX ia IIC T4 or T6) Technical data
- ATEX certificate Ex II 1 GD
- Power supply: 14...30VDC, 2-wire system
- Power consumption: 4-20mA for 0… 100% of scale
- 4-20mA analog output:
- Error: <0.6% of magnet position
- Maximum load in 4-20mA loop: 900Ω (with 30 VDC power supply)
- Totalizer: 8 digits, 4.5mm high. Reset by potential free contact
- Ambient temperature: -5°C — 40°C Float Damping System (For gas and steam applications) Ceramic, PEEK or metallic piston system for avoiding float oscillations in flowmeters for gas and steam service, obtaining stable readings even with very low working pressures and low gas densities. Available for DN15...DN80 Upper float stop Float Piston Piston locking circlip Guide cylinder Circlips for locking upper float stop & guide cylinder Quality management System ISO 9001 certified by Pressure Equipment Direction 97/23/CE certified by ATEX European Directive 94/9/CE certified by HART is a registered trademark of HART® Communication Foundation