Gestra Products Technical - Control And Power

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Type Approval Nos. at a Glance Type Approval Number Code T Ü V S W B 0 2 4 0 3 Safety Measured quantity W = Water T = Temperature D = Pressure Function B = Limiter R = Controller S = Switch W = Detector Classification societies for marine applications GL Germanischer Lloyd LR Lloyd's Register See BG See-Berufsgenossenschaft RINA Registro Italiano Navale ABS American Bureau of Shipping KR Korean Register of Shipping BV Bureau Veritas DNV Det Norske veritas 86 Year of approval or extension VdTÜV Bulletin Abbreviations for temperature control equipment: STW = Safety temperature controller (STB) = Safety temperature limiter designed with interlocking facility TW = Temperature controller Function Equipment Type Approval Number Water-level controller with high-level alarm NRGS 16-1S Compact system for on-off control NRGT 26-1S KS 92-1 NRS 2-3 Compact system for modulating control, current output 4...20 mA Water-level limiter NRG 16-11S NRS 1-7 Self-monitoring equipment with automatic routine testing Combination electrode 1 Water-level limiters Combination electrode 2 Water-level limiters NRG 16-38S NRS 1-7 Specification see below NRG 16-39S NRS 1-7 (2x) Self-monitoring equipment with automatic routine testing combined with compact system for continuous monitoring current output 4...20 mA GL99250-96 HH LR 98/20075 RINA No ELE/30298/1 GL 99249-96 HH LR 98/20074 BV 10617/Bo RINA No ELE/30298/2 KR HMB06190-MS002 DNV A-8394 LR 98/20076 GL WB-93-349001 BV 10618/Bo RINA No ELE/95695/1 KR HMB06190-MS002 LR 01/20026 GL 40 601 - 01 HH ABS 01-HG227959/1-PDA KR HMB06190-MS002 DNV A-8394 BV 11400/A1 BV Safety temperature limiter TRG 5-5../TRS 5-6 GL 99251-96 HH LR 00/20051 Conductivity monitoring (feedwater) LRGT 16-1 GL 33254-06 HH Fine filter monitoring of bilge water, 15 ppm alarm IMO-OR 52/7 See BG 320.030 Monitoring of cooling water ORGS GL 17106-00 HH LR 07/20031 BV 17515/A0 BV Monitoring of condensate / feedwater OR 52-5 GL 94855-94 HH
mA V Basics MIN (NW) (LW) Self-monitoring conductivity level electrodes NRG 1...-40 24 V DC ↔ bus signal (2x) Visual display unit Level switch NRS 1-40 / NRS 1-40.1 with automatic testing routine (in control cabinet) (1x) GESTRA Boiler Protection System Wago – I/O Control SPECTORbus With these systems, proven technology in the design of electrodes has been alloyed with innovative new level detection and evaluation techniques: All level electrodes feature now special electronic sensor units which, via a bus interface, can exchange data automatically with level controllers or higher-level control systems. The next era in liquid level monitoring and control has dawned. Features and Benefits of SPECTORbus n Patented thermal barrier in cylindrical body above electrode flange n Terminal box equipped with excess temperature fuse (85 °C) n Freely accessible connecting terminals n Large terminal box makes for easy installation n Standardized response sensitivity ≥ 0.5 µS/cm simplifies stocking and spare part inventories n Optimum system adaptation/extension without any additional wiring n Reduced installation effort and material costs, since only a single four-core cable is required between boiler and control cabinet MAX (HW) Self-monitoring conductivity level electrodes NRG 1...-41/.-41.1 24 V DC ↔ bus signal Level switch NRS 1-41 (in control cabinet) NRS 1-40.1 (LW, HW*), Temp.) 100 % MAX MIN 0 % Capacitance level electrode NRG 26-40 24 V DC ↔ bus signal Control terminal and display unit URB 2 (panel mounting) *) The system can do without the separate NRS 1-41 if the burner is switched off by the high level function Valve OPEN/ CLOSED n Reduced cost of control cabinet – only one PG thread – only five input terminals – only one cable in control cabinet for all sensing units n Active cable monitoring through message identification for error detection and prioritisation of messages in the event of low-level alarm n Length of cable between sensor and controller 125 m; max. cable length 1000 m n Easy to integrate in visual display and automation systems n Thanks to increased functionality of controllers less component parts required n Limiter – Two electrodes but only one controller – Switch-selectable one/two-electrode system (emergency operation) – Instantaneous indication of low level by separate, flashing diode as soon as the liquid falls below low level (simplifies routine testing) – After time delay has elapsed, the LEDs stop flashing and are permanently illuminated – Separate, instantaneous signal output for low water level – Self-test routine combined with automatic selfchecking of respective output relay contacts Conductivity electrode LRG 16-40 24 V DC ↔ bus signal Level controller NRS 2-40 (in control cabinet) STB Temperature sensor TRG 5-6... Level controller NRR 2-40 (in control cabinet) LRR 1-40 NRS 1-41*) TRV 5-40 Blowdown controller LRR 1-40 (in control cabinet) n GESTRA Boiler Protection System – up to 4 limiters for one control unit (2 x LW, HW, safety temp. limiter – in any combination). n Controller – Less time-consuming calibration of measuring range; 100 % can be adjusted at level 50 %. – No additional time relays required for system optimization. Built-in time delays individually adjustable between 1...25 sec. for each contact and position. – Reduced wiring effort for control cabinet: Only a single four-core cable is required for wiring the panel-mounted control terminal and display unit, since all switchgear controls remain on the mounting panel where their functions are required. – One operating and control terminal for all connected bus nodes. – The control terminal features permanent level and conductivity indication according to TRD 401 (second water-level indication) and draft of rules concerning conductivity limiters. – Easy parameterization of controls on control terminal or PC. 87 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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DISCO ® Non-Return Valves RK, PN 6
Page 36 and 37: DISCO ® Non-Return Valves RK, PN 6
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 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 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
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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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