Gestra Products Technical - Control And Power

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Level Probes and Control Units for Very High Pressure/Temperature Ranges Design The probe works without any moving parts. The probe rod, which is insulated by a ceramic tube, is inserted through a hole in the probe flange such that pressure-tight sealing is ensured. The ceramic tube is closed at the lower end and covered by a protection tube. The electronic control unit is housed in the terminal box. The wiring is effected via a 6 pole connector with crimp connection. NRG 211 In combination with level switch NRS 2-4 for indicating high-water level at very high pressures and temperatures (up to PN 320, 550 °C). Application in draining systems of conventional power stations and high-pressure steam boilers. 100 Operation The principle of capacitance measurement is used to sense liquid levels. The probe rod and the protection tube form a capacitor, with air or the particular liquid being the dielectric. In electrically conductive liquids the probe insulation serves as dielectric. As the level rises or falls, the capacitance of this assembly changes, is converted in the integral measuring transducer into a signal, and is then fed to the associated electronic control unit. NRS 2-4 The level switch NRS 2-4 is an analogue electronic amplifier for the capacitance electrode type NRG 211. In combination with this level electrode the unit can detect high water level. In addition, the level switch evaluates possible malfunction signals coming from the electrode and monitors the electrode supply cable and can therefore be used as part of a controlled draining system in power stations. URN 2 The power supply unit type URN 2 in combination with up to four level switches and the cycling timer can be used as part of a controlled drainage system in power stations or for low level indication. Example of installation Use the PSU type URN 2 only for the power supply of a maximum of four level switches type NRS 2-4.
Level Control for Very High Pressure/Temperature Ranges Steam line Bypass steam trap BK NRG 211 NRG 211 URN 2 Type Material PN Stock code NRG 211 *) 1.5415 320 200 bar at 450 °C 320 bar at 120 °C 1.7380 200 bar at 500 °C 320 bar at 120 °C 1.4922 230 bar at 550 °C 320 bar at 120 °C 350100130 ≤ DN 100 350100140 > DN 100 350100231 ≤ DN 100 350100241 > DN 100 350100332 ≤ DN 100 350100342 > DN 100 URN 2 3372042 NRS 2-4 HW 3233142 *) with welding connection, nuts, bolts and seals for pipes ∅ > DN 100 or < DN 100 NRS 2-4 (two) NRS 2-4 (two) Control valve ZK Malfunction (alarm) Control signal Control signal Malfunction (alarm) Control signal 101 B
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GESTRA Technical Information Steam
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GESTRA Steam Traps and Steam Trap M
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For steam and energy management, we
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Thermostatic Steam Traps BK with Du
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Thermostatic Steam Traps MK with Me
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Ball-Float Traps UNA PN 1 - PN 1 0
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Ball-Float Traps UNA PN 1 - PN Capa
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Thermodynamic Steam Traps DK PN 0,
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Steam Traps for Special Application
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Steam Traps for Special Application
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Steam Trap Units ECONOline for UNIV
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Testing Steam Traps Like any other
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Steam Trap Monitoring Equipment Sys
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Condensate Collector and Steam Mani
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GESTRA DISCO Non-Return Valves 30 G
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DISCO ® Non-Return Valves RK, PN 6
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DISCOCHECK ® Dual-Plate Check Valv
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DISCOCHECK ® Dual-Plate Check Valv
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DISCO ® Swing Check Valves CB DN 5
Page 50 and 51: Swing Check Valves WB without sprin
Page 52 and 53: NAF-Check Valves DN 40 - 1000 mm, P
Page 54 and 55: GESTRA Control Valves ZK 54 GESTRA
Page 56 and 57: Cooling Water Control Valves CW GES
Page 58 and 59: Return-Temperature Control Valves B
Page 60 and 61: Return-Temperature Control Valves B
Page 62 and 63: Self-Acting Pressure Control Pressu
Page 64 and 65: Self-Acting Temperature Controllers
Page 66 and 67: Control Valves with Electric and Pn
Page 68 and 69: Control Valves ZK with Radial Stage
Page 70 and 71: Control Valves ZK with Radial Stage
Page 72 and 73: Strainers GSF H H 1 H H 1 72 B S
Page 74 and 75: Stop Valves GAV H 1 74 L1 Stop Valv
Page 76 and 77: SPECTOR Product Range GESTRA’s SP
Page 78 and 79: How to Read Type Codes GESTRA Type
Page 80 and 81: GESTRA Steam Plant D 80 T P S A J B
Page 82 and 83: Fundamental Principles of Measureme
Page 84 and 85: Type Approvals at a Glance GESTRA B
Page 86 and 87: Type Approval Nos. at a Glance Type
Page 88 and 89: Level Limitation Low-Level Limiter
Page 90 and 91: Description 1. Conductivity Measure
Page 92 and 93: SPECTORcompact Where formerly two d
Page 94 and 95: Self-Monitoring Low/High-Level Alar
Page 96 and 97: Modulating Level Control - Conventi
Page 98 and 99: Accessories for Liquid-Level Alarms
Page 102 and 103: Marine Applications Level Electrode
Page 104 and 105: GESTRA Equipment for Energy Supply
Page 106 and 107: Temperature Control Bus NrS 1-40.1
Page 108 and 109: Temperature Control Conventional Tr
Page 110 and 111: Conductivity Monitoring Basic Princ
Page 112 and 113: Conductivity Spector Bus/Compact Lr
Page 114 and 115: Conductivity Monitoring with Manual
Page 116 and 117: Conductivity Monitoring with Manual
Page 118 and 119: Ancillaries: Level Pots and Portabl
Page 120 and 121: Continuous Blowdown Valves 120 L BA
Page 122 and 123: Programme-Controlled Blowdown Syste
Page 124 and 125: Rapid-Action Intermittent Blowdown
Page 126 and 127: Contamination Detectors for Condens
Page 128 and 129: Ingress of Oil in Cooling Water Sys
Page 130 and 131: Flowmeters for Steam, Gases and Liq
Page 132 and 133: GESTRA SPECTOR Family SpECTorcom/co
Page 134 and 135: Condensate Recovery and Return Syst
Page 136 and 137: Closed-Type Condensate Recovery and
Page 138 and 139: Steam Powered Condensate Return Tan
Page 140 and 141: Steam Regenerators Steam regenerato
Page 142 and 143: Flash Vessels Type VD Flash Vessels
Page 144 and 145: Condensate Dampening Pot ED Technic
Page 146 and 147: Controls Pump Controls Function The
Page 148 and 149: Questionnaire for preparing offers
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Questionnaire for preparing offers
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156 Our Mobile Testing Station For
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Technical Advice and Training Semin
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Useful Conversions MASS 1 kilogramm
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EC Pressure Equipment Directive (PE
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EC Pressure Equipment Directive (PE
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Combined Imperial and S. I. Steam T
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DIN Material Reference Chart 168 EN
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Technical Literature Technical Docu
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Index by Product Name Product Type
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Index by Product Name Product Type
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Index by Product Code Type Product
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Note: Responable care has been take
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Gestra Products Technical - Control And Power

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