Flow switch for the monitoring of mass flow
Flowphant T DTT31
Linha de atendimento
+351 212 388 403
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On-site display
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High reproducibility and long-term stability
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Large turndown
Specs at a glance
Medium Liquids Measuring range 0.03 to 3 m/s (0.1 to 9.84 ft/s) Medium temperature –20 to +85 °C (–4 to +185 °F) Process pressure 0 to +100 bar (at 20 °C) (0 to 1450 psi) Product / Version Price / pcs. in EUR Order code Process Connection Electrical Connection Power Supply; Output 1 to 3 4 to 10 11+ W/o, compr. fitting 316L, L=>100mm insertion length, compr. fitting, to order separately. Plug M12 18-30VDC; 1x switch PNP 261,- 243,- 230,- DTT31-A1A111AA2CAB 18-30VDC; 2x switch PNP 277,- 258,- 244,- DTT31-A1B111AA2CAB 18-30VDC; switch PNP + 4-20mA 314,- 292,- 277,- DTT31-A1C111AA2CAB Plug ISO4400 M16x1.5 18-30VDC; 1x switch PNP 277,- 258,- 244,- DTT31-A2A111AA2CAB G1/4 male thread ISO228, 316L Plug M12 18-30VDC; 1x switch PNP 266,- 248,- 234,- DTT31-A1A111ABxxAB 18-30VDC; 2x switch PNP 282,- 262,- 248,- DTT31-A1B111ABxxAB 18-30VDC; switch PNP + 4-20mA 319,- 297,- 281,- DTT31-A1C111ABxxAB Plug ISO4400 M16x1.5 18-30VDC; 1x switch PNP 282,- 262,- 248,- DTT31-A2A111ABxxAB G1/2 male thread ISO228, 316L Plug M12 18-30VDC; 1x switch PNP 266,- 248,- 234,- DTT31-A1A111AExxAB 18-30VDC; 2x switch PNP 282,- 262,- 248,- DTT31-A1B111AExxAB 18-30VDC; switch PNP + 4-20mA 319,- 297,- 281,- DTT31-A1C111AExxAB Plug ISO4400 M16x1.5 18-30VDC; 1x switch PNP 282,- 262,- 248,- DTT31-A2A111AExxAB Cable and plug to be ordered separately from the accessories section. Please specify length.Accessories
Product / Version Price / pcs. in EUR Order code Collar welding boss d6 PEEK + screw moveable with sealing taper, washer + pressure screw G1/2, material of wetted parts: 316L, PEEK, max. Prozessdruck: 10 bar (145 psi) 47,48 51004751 Compression Fitting TA50
6mm; G1/2; PTFE57,86 TA50-HP Cable M12x1 l=5m 5m cable 4x 0.34 mm2, molded PVC angled connector, M12x1 connector screw Cu Sn/Ni, IP67. 9,80 51005148 Socket for plug 4p-125V, 4A-M12 M12 socket for plug. Self confectionery connection. Usage: plug M12. 15,55 52006263 Configuration kit TXU10- for PC-programmable devices. set-up programme+interface cable for PC with USB-Port. 4 pin plug + ReadWin2000 101,72 TXU10-AA M12 elbow plug ready for cable, IP67,PG7 10,36 51006327 System power supply RNB130 Primary switched-mode. Input voltage: 85-264VAC, 45-65Hz. Output voltage: 24VDC, max. 30V (for errors). 138,89 RNB130-A1A Prices valid until 31.12.2019 in EUR per unit (not including shipping and applicable sales tax). See
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Application
The Flowphant T DTT31 is a flow switch for monitoring, displaying and measuring relative mass flow rates of liquid media in the range from 0.03 to 3 m/s (0.1 to 9.84 ft/s). Application examples include: Monitoring cooling water circulation systems of pumps, turbines, compressors and heat exchangers and monitoring lubrication systems.
Function
The device measures the mass flow of a liquid medium with the calorimetric measurement method. The calorimetric measuring principle is based on cooling a heated temperature sensor. Heat is removed from the sensor by forced convection due to medium flowing by. The extent of this heat transfer depends on the medium velocity and the difference in temperature between the sensor and medium (King's law). The higher the velocity or the mass flow of the medium, the greater the temperature sensor cooling.
Application example
The Flowphant monitors the flow in a cooling circuit and signals when flow drops below a minimum flow rate.
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Technical data
InputMeasurement range 0 to 100 %; resolution 1 %
0.03 to 3 m/s (0.1 to 9.84 ft/s) for liquids
OutputOutput signal 1 × PNP, 2 × PNP or 1 × PNP with analog output for flow and temperature Voltage drop PNP ≤2 V Overload protection Automatic testing Performance characteristicsReference conditions According to DIN IEC 60770/61003 Measured error Switch point and display 0.2 % Long-term drift ≤0.5 % per year under reference operating conditions Sensor reaction time 6 to 12 s Response time Switch output 100 ms Operating conditionsMedium temperature –20 to +85 °C (–4 to +185 °F) Ambient temperature –40 to +85 °C (–40 to +185 °F) Degree of protection With M16×1.5 valve plug: IP 65
with M12×1: IP 66
Power supplySupply voltage Ub 18 to 30 V DC, reverse polarity protection Current consumption Without load <100 mA at 24 V DC GeneralEMC Interference emission as per IEC 61326 Series, class B electrical equipment; interference immunity as per IEC 61326 Series, appendix A (indust. use) and NAMUR Recomm. NE 21 Operating elements 3 buttons or PC and software Materials Process connection, protecting tube and housing 316L ApprovalsDesina compliant Dimensions (in mm)
Housing
L = sensor length 30 mm, 100 mm (1.16", 3.94")
Installation according to operation instructions
Process connections
a) Without (for mounting with welding boss or compression fitting: L ≥ 100 mm/3.94")
b) ISO 228 G ¼ A, 316L
c) ISO 228 G ½ A, 316L
Installation according to operation instructions
Electrical connection
DC voltage version with M12×1 connector
A1: 1×PNP switch output
A2: 2×PNP switch outputs R1 and (1) (R2)
A2': 2×PNP switch outputs R1 and (1)
(diagnosis/break contact with adjustment „DESINA")A3: PNP switch output, additional analog output
DC voltage version with valve plug M16×1.5
B: 1×PNP switch output
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