Gestra Products Technical - Control And Power

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Level Limitation Low-Level Limiter Control unit NRS 1-40 in conjunction with one level electrode type NRG 16-40, 17-40, 19-40 or 111-40 constitutes a high-integrity self-monitoring low-level limiter with periodic self-checking and automatic routine testing of output relay contacts. Function: n Low-level alarm with one switchpoint. The equipment detects min. water level (low-level alarm). Application in steam and pressurized hotwater boilers according to TRD 401, TRD 602 and TRD 604, EN 12952/..53. High-Level-Alarm Low-Level Limiter Control unit NRS 1-41 in conjunction with one level electrode type NRG 16-41, 17-41 or 19-41 constitutes a high-integrity self-monitoring high-level alarm system with periodic self-checking and automatic routine testing of output relay contacts. Function: n High-level alarm The equipment detects the max. water level. Boiler Protection System Description The control unit NRS 1-40.1 in combination with two level electrodes NRG 1.-40, the temperature sensor TRG 5-6../TRV 5-40 and, if required, the level electrode NRG 1.-41.1 constitutes a self-monitoring boiler protection system with periodic self-testing and continuous monitoring of the output relays. The control unit features the following functions: Technical Data 88 Level Limitation (Low and High Level Alarms) Type Pressure rating End connection Control unit NRS 1-40 in conjunction with two level electrodes type NRG 16-40, 17-40, 19-40 or 111-40 constitutes a high-integrity self-monitoring low-level limiting system with periodic self-checking. The control unit features the following function: n Low-level alarm with two switchpoints. The equipment combination detects lowwater level (low-level alarm system). Application in steam and pressurized hotwater boilers according to TRD 604, sheet 1 and 2 (operation without constant supervision for 24/72 hrs.). Application in steam and pressurized hotwater boilers according to TRD 401, TRD 602 and TRD 604, EN 12952/..53. The electric device complies with the regulations for safety circuits to DIN EN 50156. n Low-level alarm with two switchpoints The equipment combination detects the min. water level (low-level limiting system). n Safety temperature limiter The equipment combination detects the max. allowable temperature. n High-level alarm The equipment combination detects the max. water level. n Or other customized combination. If more than four limiters are required, the control unit NRS 1-40.2 can also be integrated in the system. Service pressure [bar] / Saturated steam temperature The electric device complies with the regulations for safety circuits to DIN EN 50156. The liquid level data are transferred from the electrode NRG 1...-40 to the control unit via CAN bus, using the CANopen protocol. The safety temperature limiter type TRG 5-6./ TRV 5-40 can be added to the system; for more information refer to pages 106 – 107. The liquid level data are transferred from the electrode NRG 1...-41 to the control unit via CAN bus, using the CAN open protocol. Application in steam and (pressurised) hotwater plants in accordance with TRD 604, sheet 1 and sheet 2 (24/72 hrs operation). The electrical equipment meets the requirements of the regulations for safety circuits according to DIN EN 50156. The data of the sensors are transferred to the control unit via CANbus, using the CANopen protocol. Lengths supplied [mm] Ambient temperature [°C] NRG 16-40 PN 40 ¾" 32 / 238 500 – 3000 70 NRG 17-40 PN 63 ¾" 60 / 275 500 – 3000 70 NRG 19-40 PN 160 ¾" 100 / 311 500 – 3000 70 NRG 111-40 PN 320 1" 180 / 357 500 – 3000 70 NRG 16-41(.1) PN 40 ¾" 32 / 238 500 – 1500 70 NRG 17-41(.1) PN 63 ¾" 46 / 260 500 – 1500 70 NRG 19-41(.1) PN 160 ¾" 100 / 311 500 – 1500 70
Self-monitoring low-level alarm system to TRD 604 (24/72 hrs without constant supervision)/EN 12952/53 Flange DN 50 mm Low level High-level alarm TRD 604, 72h Level electrode NRG 16-41 Flange DN 50 mm High level Low level Self-monitoring boiler protection system TRD 604 24h/72h / EN 12952/53 Level electrode NRG 16-41.1 Flange DN 50 mm High level Level electrodes NRG 16-40 Level electrode NRG 16-40 Flange DN 50 mm Level Limitation (Low and High Level Alarms) Low level Level switch NRS 1-41 Low level Level switch NRS 1-40 TRV 5-.. Power 05 24 V, DC Level switch NRS 1-40.1 TRG 5-6. Burner protection circuit 0525 Feed OFF or burner OFF 0525 Burner protection circuit 0525 Type PN Stock code NRG 16-40 NRS 1-40 NRG 17-40 NRS 1-40 NRG 19-40 NRS 1-40 NRG 111-40 NRS 1-40 1000 mm 230 V 1000 mm 230 V 1000 mm 230 V 1000 mm 230 V Optional: NRS 1-4. special voltage: 115 V, 50..60 HZ 40 63 160 Type approval TÜV SWB/SHWS 07-403 EG BAF-MUC 02 02 103881 002 Type approval TÜV SWB/SHWS STW (STB) 03-413 EG BAF-MUC 03 07 103881 004 TRG 5-6... / TRV see pages 106 – 107 3514042 3222541 3544042 3222541 3574042 3222541 320 3574142 If supervision is limited, the system can be operated with one electrode. Type PN Stock code NRG 16-41 NRS 1-41 NRG 17-41 NRS 1-41 NRG 19-41 NRS 1-41 500 mm 230 V 500 mm 230 V 500 mm 230 V Type approval TÜV SWB/SHWS 07-403 EG BAF-MUC 02 02 103881 002 For flanges see Price List 40 63 160 3524041 3222741 3551241 3222741 3594041 3222741 Type PN Stock code NRG 16-40 1000 mm 3514042 TRG 5-65 2671611 TRV 5-40 40 2691040 NRG 16-41.1 500 mm 3524141 NRS 1-40.1 230 V 3222841 NRG 17-40 1000 mm 3544042 TRG 5-65 2671611 TRV 5-40 63 2691040 NRG 17-41.1 500 mm 3551341 NRS 1-40.1 230 V 3222841 NRG 19-40 1000 mm 3574042 TRG 5-65 2671611 TRV 5-40 160 2691040 NRG 19-41.1 500 mm 3594141 NRS 1-40.1 230 V 3222841 Optional: NRS 1-40.2, 230 V 3222941 89 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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Page 38 and 39: DISCO ® Non-Return Valves RK, PN 4
Page 44 and 45: DISCOCHECK ® Dual-Plate Check Valv
Page 46 and 47: DISCOCHECK ® Dual-Plate Check Valv
Page 48 and 49: 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 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 100 and 101: Level Probes and Control Units for
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
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Steam Powered Condensate Return Tan
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Steam Regenerators Steam regenerato
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Flash Vessels Type VD Flash Vessels
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Condensate Dampening Pot ED Technic
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Controls Pump Controls Function The
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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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