Latest null detector Tenders | Government null detector Tenders

CTN :45361494

03 Jul, 2026 NA

Kolkata - West Bengal

Tender For corrigendum : supply of various scientific equipment for orv project yard 3041 - gravity corer , gravity corer spare , box grab - spade corer - _various buckets , box grab accessories , sediment grab , sediment grab accessories , chain bag dredge , chain bag dredge accessories , analytical balances , ovens-50 ltrs - up to 60degree c - , ovens-400 ltrs - up to 300degree c - , system cable- cable assemblie- connector , installatn matl., accessories and toolbox , on board spares , documentation , service engineer_training and installation , mtc and gc

CTN :45626062

02 Jul, 2026 NA

Multi City - Andhra Pradesh

Tender For dr.mvr rtpp- stg-iv-e&m const.chp-e&m-ii- procurement of battery charger spares- offer- req- reg - input contactor ac 70a,3pole,415v ac plus 1nc aux.(3tf477), coil voltage 415v ac. 220/240/380/415 v 20.5/22/35/38 kw 27/30/46/50 hp iec 60947 is 13947 vde 660 make, siemens, capacitor ac 10 mfd/440vac . make- tibcon, thyristor/scr module skkt57b16e 55a 1600piv , make semikron, filter capacitor ,3300 mfd/350 vdc,surge 385 vdc , cap. tolrance plus or minus 20% ,operating temp -40c to 85c, iec 60384-4- 2016, make-alcon electronics pvt ltd., trip relay 12v, 3c/o ,5a ,bis is16463- 2016 , make- pla relays, capacitor, 2.5 mfd, voltage- 440v ac, make- tibcon, power contactor 63a , coil volatge- 415 vac, input contactor ac 63a,3pole,415v ac plus 1nc, aux.(3tf477) make, siemens, 220/240/380/415 v 20.5/22/35/38 kw 27/30/46/50 hp, iec 60947 is 13947 vde 660, blockind diode float , 70a,800v threading type anode (70hmr120). iec-60747-9- 2007 make- ruttonsha, filter capacitor,pg-6di ,4700 mfd/350 vdc,surge 385 vdc , cap. tolrance plus or minus 20% ,operating temp -40c to 85c, iec 60384-4- 2016 ,make-alcon electronics pvt ltd., fuse link, hrc, tia 16 amp ,415v , 80ka make- siemens, eaton bussmen series., fuse link tia type 32a ,a2 gg 415v ac , 80ka , make- c and s ,siemens, eaton bussmen series etc. is/iec 60269., ac voltmeter fuse 2a/32a ns type make- siemens,eaton bussmann series, lawson etc.bis is 16463- 2016., control fuse 6a/32a , ns type make- siemens,eaton bussmann series, lawson etc.bis is 16463- 2016 ., over load relay,5a,3c/o,18v make- pla relays, fuse link,cylindrical,type- hf,size- 14x51,32a bis is 16463- 2016 make- l and t., bottle for transformer oil sampling,2000ml,stainless steel. make- apt engineering works/monarch controls/aone scientific/top syringe manufacturing company etc., thyristor protection fuse,type/model- fr22gg specifications- 32a gg 690v ac 80ka bs88-2 iec 60269-2 make- bussmann series.

Central Government/Public Sector

CTN :45592091

27 Jun, 2026 NA

Anand-Guj - Gujarat

Tender For supply of operational spares for portable multi gas detector (make industrial scientific, model ventis mx-4) of well services, cambay - sensor: hc (lel) (oem part no. 17134495), sensor: o2 (oem part no. 17134461), front case assembly (oem part no. 17152380-0), charger (oem part no. 18108191)

CTN :45562952

01 Jul, 2026 43.22 Lacs

West Tripura - Tripura

Tender For supplying, installation, testing and commissioning of equipments for electrical measurement, electrical workshop, electrical machine & power system laboratory at ttaadc polytechnic institute, khumulwng, west tripura for the project "improvement of infrastructure in ttaadc polytechnic institute, khumulwng, west tripura, district under higher education department” under the nec scheme. (2nd call) - supplying, installation, testing and commissioning of electrical measurement, electrical workshop, electrical machine & power system laboratory equipments/machineries of electrical engineering department at ttaadc polytechnic institute, khumulwng, west tripura under the nec scheme "improvement of infrastructure in ttaadc polytechnic institute, khumulwng, west tripura, district under higher education department." (2nd call), kelvin double bridge trainer kitthe instrument should have following features : easy illustration of kelvins bridge digital display (dpm) for null detection online product tutorialthe instrument should have following technical specifications :dc power supply : +5vknown resistance : r1=100k , 20k , 10k r3=1k , 200 , 100 dpm : 2vdimensions (mm) : 240 w x 345 d x 110 hunknown resistance : 0.3 , 0.4 , 0.8 mains supply : 230 v 10%, 50 hz, whetstone bridge trainer kitthe instrument should have following features :sample : constantan, nichromeprovided with dc power supply compact designeasy to operatethe instrument should have following technical specifications:dc power supply:5vgalvanometerdeflection:30 - 0 30resistance:80 unknown resistance type: variablerange:0 - 10k wire samples: -constantan: 1mnichrome:1mfuse:500mamains supply: 90 - 275v, 50hzdimensions (mm):w 345 x d 240 x h 110, experimentation with de sautys and schearing bridgethe instrument should have following features: - a complete set up with all necessary accessories inbuilt 1 khz sine wave generator with variable amplitude null detector with dpmtechnical specification: -sine wave generatorfrequency range:1khz 10%amplitude control output: up to 15vppfuse:500 ma, s/bdpm:200 mvunknown capacitor:0.1 f, 0.22 f, 0.47 fmains supply:230v ac, 10%, 50hzdimension (mm):w 345 x d 240 x h 110, experimentation with maxwells bridgethe instrument should have following features : illustration of both maxwells inductance bridge and maxwells inductance-capacitance bridge on a single board inbuilt 1 khz sine wave generator with variable amplitude null detector with dpmthe instrument should have following technical specifications :mains supply : 230 v 10%, 50 hzdc power supply : +12v, -12vsine wave generatorfixed frequency : 1khz 5%amplitude control range : upto 20vppunknown inductors : 10 mh, 20mh, 30 mh, 56 h, 24 h, 12 hdpm : 200mvunknown internal resistance : 470w, 10 , 20 , 30dimensions (mm) : w 240 x d 345 x h 110, measurement of three phase active & reactive power with single phase wattmeter technical specifications:analog meters: analog voltmeter, range : 300v analog ammeter, range : 2a analog wattmeter power supplies: operated on mains power 415v, 50hz +10%components are mounted on the panels are: capacitive load inbuilt inductive load inbuilt resistive load (external)salient features: three phase power light indicator for mains. front panel built with high class insulated bakelite sheet with sticker well printed circuits and symbols. mcb for short circuit protection connections are brought out through 4mm colored safety sockets. patch cords 4mm. the trainer is housed in metal cabinet. size of the trainer set 36 x 24 , power & power factor measurement by ct & pt in three phase circuittechnical specifications:power supplies: ac power supply 0-415v at 4a operated on mains power 415v, 50hz +10%digital meters: digital voltmeter digital ammeter , digital wattmeter (analog), digital power factor meter components are mounted on the panels are: 3 phase capacitive load (inbuilt) 3phase resistive load (external) 3phase inductive load (external) emergency stop

CTN :44801778

10 Jun, 2026 NA

Angul - Odisha

Tender For bid to ras supply of spares of m/s super scientific works pvt ltd make 50 ltr reflux reaction distillation unit - 50 ltr. spherical vessel - reactor with centre: dn 150, side: dn, 00/45º x 1 no, dn 40 x 3 nos, bottom: dn 50/40 (for bath & flush bottom), 20 ltr. graduated vessel receiver flask, graduated c-25, s- 25 x 2nos, b-25, 20 ltr.graduated vessel addition flask graduated with c- b 55 with stopper, s-25 x 2, b-25, glass heat exchanger coil type dn 100/0.5 hta: 0.5 m.sq., 610 mm lg., product cooler size dn 25/80/0.2 m², glass column scetion with glass rasching ring and 2 nos ptfe perforated, packing support, 2 nos. of glass stirrer with teflon half moon blade for 50 ltr. flask, glass thermowell & dip pipes, glass pipes & fittings, glass valves - flush bottom, line, drain. angle, vent valves etc, ptfe line bellow with ci bellow flanges, ci i. nges with insert gasket, nut bolt & ptfe 'o' ring, chuck & seal assembly with mechanical seal for 50ltr., multipurpose heating ms cooling bath with ms coil & insulation with, aluminium screwed cladding flame proof heater for 50 ltr. 4kw, 3 phase, 415v, flameproof electric motor with suitable gear box, 0.5hp,180 rpm., flame proof vfd 0.5 hp, flp panel consists of 2 point digital temperature indicator for reactor temp, and reflux temperature & digital temperature indicator cum controller for bath., 03 nos. of flame proof rtd for heater, bath & rda., gi tubular supporting structures powder coated

Central Government/Public Sector

CTN :45048273

20 May, 2026 NA

West Tripura - Tripura

Tender For procurement of industrial scientific make spares for portable multi gas detectors and area gas monitors.

Central Government/Public Sector

CTN :44801036

16 Apr, 2026 NA

Delhi - Delhi

Tender For supply of one set consisting of following 09 items of spares for dissolved gas analyzer (dga), model cs-6100 make-centurion scientific, new delhi 1. calibration standard gas mixture in 0.5 ltr water cap. canister suitable for dga analysis (part no. cs016013) = 01no. 2. gas tight syringe of 1 ml capacity for sample injection (part no. cs016006) = 02nos. 3. glass syringe, 5ml (part no. cs016005) = 04nos. 4. septum for dga (pkt of 50 nos) = 02pkts. 5. end cap for valve of extraction syringe (part no. cs016003) (packet of 25 nos.) = 04nos. 6. plunger head seal for 60 ml (part no. cs016002) = 05nos. 7. septum ? calibration gas canister (pkt of 50 nos) (part no. cs016015) = 01no. 8. 10ml syringe for trapped air extraction= 05nos. 9. 3 way valve for extraction of gases (cs016001) = 04nos. [ warranty period: 30 months after the date of delivery ]

Central Government/Public Sector

CTN :44501004

06 Apr, 2026 NA

Kalol - Gujarat

Tender For procurement of spares for industrial scientific make radius bz1 model area gas monitor for well services, ahmedabad asset - procurement of spares for industrial scientific make radius bz1 model area gas monitor for well services, ahmedabad asset, safe core, lel sensor, safe core, h2s sensor, safecore,pump assembly, module, charging power supply (without power cord ), safe core, module cover, safe core pcba module, safe core pcba module, sensor 6 position, radius bz1 cover, with out safe core

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