Latest null detector Tenders | Government null detector Tenders

CTN :45720703

30 Jul, 2026 2.00 Crore

Chhatarpur - Madhya Pradesh

Tender For inviting rates of different items for construction of diffrent type of work as per demand on cm help line or ward parsad or public - supply of handpump material 2026-27, excavation for roadwork in soil with hydraulic excavator including cutting and loading in tippers, trimming bottom and side slopes, in accordance with requirements of lines, grades and cross sections, and transporting to the embankment location with all lifts and lead up to 1000 m as per section-300 of the specifications.item no nvi-3.12, construction of embankment/sub-grade/earthen shoulders with material obtained from other sources, as per provisions of section 305 of the specifications, with approved materials/soil confirming to requirements given in table 301-1 of specifications including all lead and lifts, including cost of watering, compaction by vibratory roller/heavy pneumatic type roller etc. confirming to requirements given in table 301 2 of the specifications complete.item no nvi-3.12, construction of granular sub-base, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method at omc and compacting with vibratory roller of 80-100 kn static weight to achieve the desired density, including all lifts and lead complete in all respect as per section-400 of the specifications.by mix in place method item no nvi -4.1.1.1, construction of dry lean cement concrete sub- base over a prepared sub-grade with coarse and fine aggregate conforming to is: 383, the size of coarse aggregate not exceeding 26.5mm, aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per table 600-1 of the specifications, cement content not to be less than 150 kg/cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 mpa at 7 days, mixed in a batching plant, transported to site, laid with paver with electronic sensor/mechanical paver, compacting with 8-10 tonnes vibratory roller, finishing and curing and as per section 601 of specifications.item no nvi- 6.1.1, providing and laying cement concrete grade m-20 with 20 mm graded crushed stone aggregate, mixing shall be in mechanical mixer, laying with paver compacting by use of pin, plate / screed vibrators including form work by strong steel girders fixed by spikes, separation membrane 125 micron thick, including cutting of joints @ 4 to 5 m interval and filling it with hot applied bituminous sealant (without dowel bars) (max. thickness 20 cm).item no nvi-6.4, construction of dowel jointed, plain cement concrete pavement in m-30 grade concrete over a prepared sub base with 43 or higher grade cement, coarse and fine aggregate conforming to is:383 maximum size of coarse aggregate not exceeding 25 mm, mixed in a batching and mixing plant as per approved mix design, transported to site, laid with a fixed form or slip form paver with electronic sensor spreading the concrete by shovels, rakes compacted using needle, screed and plate vibrator and finished in a continuous operation including provision of contraction, expansion, and longitudinal joints, joint filler, separation membrane, sealant primer, joint sealant, debonding strip, placing of dowel bar, tie rod admixtures as approved, curing compound, finishing to lines and grades as per approved drawings as per irc:15 and as per section-602 of the specifications complete excluding cost of steel in dowel bar and tie rod etc.item no nvi-6.2.1, earth work in excavation for foundation, trenches for pipes / cables or drains etc. by mechanical means / manual means (exceeding 30cm in depth.) including ramming of bottom,dressing of sides,disposal of excavated earth including of all lift and lead upto 50m.disposed earth to be levelled and neatly dressed.all kinds of soil item no nii 2.6.1, demolishing cement concrete manually/by mechanical means including disposal of material with in 50 meters lead as per direction of engineer-in-charge.1:3:6 or richer mixitem no nii

CTN :45709274

10 Jul, 2026 NA

Thrissur - Kerala

Tender For supply, installation, testing and commissioning of hydrological, soil moisture and water flow monitoring instruments - woltman type water meter, tensiometer, soil moisture sensor, redox potential sensor, ultrasonic water level, sensor - radar based, ultrasonic flow velocity, sensor - radar based, infiltrometer, supply and installation of parshall flume (6") , discharge measurement 0.1 to 8.7 i/s, supply and installation of parshall flume (12") , discharge measurement 0.9 to 49 i/s, automation of water level recording system in parshall flume.

State Government

CTN :45666246

08 Jul, 2026 NA

Bhubaneswar - Odisha

Tender For tdr soil moisture sensor with access tube and hewkeye mini eco sounder

CTN :45024470

25 Jun, 2026 1.00 Lacs

Pune - Maharashtra

Tender For bid to ras supply of next gen electronic study material d d - arduino uno with ic , arduino nano soldered , arduino mega , breadboards and mini breadboard , general purpose soldering board , i2c module for display soldered , usb cable set , 9 volt battery , line voltage regulator , water pump module , 8 in to 8 led matrix module , bluetooth , ldr module , joy stick , active buzzer , motor driver , dc plastic gear motor with wheel , nodemcu with wi-fi , rgb leds , leds red , leds green , leds blue , led yellow , leds white , 555 timer ic , diode kit , transistor kit , push button switch , mq 2 smoke detection , mq 3 alcohol- ethanol sensor , mq 4 methane natural gas sensor , mq 5 methane liquified gas sensor , mq 6 liquified petroleum gas sensor , mq 7 high sensitivity co carbon monoxide sensor detector , mq 8 hydrogen gas sensor , mq 135 air quality sensor , ultrasonic sensor module hc sr 04 or compatible , soil moisture sensor module , rain drop sensor , temperature sensor , temperature sensor and humidity sensor module , 10000 mah 5 volt power bank , lithium-ion battery , lithium-ion battery charger , lithium-ion battery holder , 18650 battery holder x 2 , solder wire , sensor add on kit , filament for 3d printer , filament storage box , string only mtr , rubber band , popsicle sticks , wood glue bottle , wire cutter , flexible cutting mat , stepped drill bit , glue stick , nuts bolts and screw , sand paper , various grit 100 , various grit 120 , neo 6m gps module , tello drone battery , pressure sensor lps22hb , prime kit , male to male jumper wires bundles , male to female jumper wires bundles , female to female jumper wires bundles , 512gb ssd , 1000 va microtec , 19v 3.42 amp

State Government

CTN :45611175

02 Jul, 2026 49.67 Lacs

Multi City - Karnataka

Tender For supply of materials and equipment to avishkar lab in 5 kps schools & 2 adarsha vidyalaya functioning under samagra shikshana karnataka in ballari district/call-4 - insulating tape (bly), bo motor wheels (bly), copper tape- 5mm/10mm wide (bly), solar panels- 12v 10w (bly), solar panels- 6v, 100mah (bly), drone kit (bly), robotics diy kit (bly), servo motor tester (bly), motor driver l298p (bly), rpm bo motor 150 (bly), servo motors (small servo plastic gear) (bly), servo motors (continuous metal gear servo 360) (bly), servo motors (small servo metal gear) (bly), servo motors (bly), dc motor (bly), stepper motor with driver board (bly), rf modules tx & rx 315 mhz ask (bly), rfid reader tags (bly), power bank (bly), sound sensor (bly), water flow sensor (bly), colour recognition sensor (bly), force pressure sensor (bly), temperature and humidity sensor module (bly), temperature sensor (bly), flex sensor (bly), rain drop sensor (bly), metal touch sensor module (bly), touch sensor (bly), soil moisture sensor module (bly), big sound microphone module (bly), relay module - 5v 10a - 1 channel relay module. compatible with arduino (bly), relay module - 5v 10a - 2 channel relay module. compatible with arduino (bly), pulse rate heart sensor (bly), pir motion detector module (bly), triple axis accelerometer (bly), ultrasonic sensor module hc-sr-04 or compatible (bly), ir transmitter/ receiver (bly), mq-135 air quality sensor (bly), mq-8 hydrogen gas sensor (bly), high sensitivity co carbon monoxide sensor detector (bly) mq 7, mq-6 liquified petroleum gas sensor (bly), mq-5 methane liquified gas sensor (bly), mq-4 methane natural gas (bly), mq-3 alcohol - ethanol sensor (bly), mq-2 smoke detection (bly), humidity sensor (bly), triple axis magnetometer (bly), ir sensors, obstacle avoider sensor module (bly), capacitative touch switch module (bly), capacitative touch module (bly), button switch set (set of 100 pieces ) (bly), diodes and transistors kit (bly), timer ic - lm 555 (bly), leds (white) (bly), leds (yellow) (bly), leds (blue) (bly), leds (green) (bly), leds (red) (bly), rgb leds (bly), jumper cable female-female (bly), jumper cable male-female (bly), jumper cable male-male (bly), hook-up wires (bly), battery clips with dc jack (bly), alligator connectors (bly), vibrating motor (bly), wemos d1 r2 (bly), node mcu (bly), dc plastic gear motor with wheel (bly), motor driver module (bly), active buzzer - big 5 volt (bly), active buzzer - small 5 volt (bly), keypad (bly), ldr module (bly), laser diode emitter (bly), gps (bly), gsm (bly), bluetooth module (bly), led matrix module 8x8 (bly), piezoelectric plate (bly), water pump module (bly), linear voltage regulator (bly), capacitor kit (bly), resistor kit (bly), esp32 (bly), battery (bly), usb cables - usb cable set (mini, 12 inches or more) (bly), usb cables - usb cable set (a to b, 12 inch or more) (bly), serial interface adapter module iic/i2c (bly), lcd display 16x2 (bly), male berg strip, 2.54mm pitch, 40 pin single row, breakable pin (bly), female berg strip, 2.54mm pitch, 40 pin single row, breakable pin (bly), fr2 a grade material (80 x 55mm) (bly), fr2 a grade material (140 x 90mm) (bly), self-adhesive proto shield (bly), solderless 800 pin breadboard (bly), solderless 400 pin breadboard (bly), raspberry pi 3 model b plus (bly), arduino mega or equivalent (bly), arduino nano or equivalent (bly), arduino uno or equivalent (bly)

State Government

CTN :45569489

27 Jun, 2026 NA

Jaipur - Rajasthan

Tender For supply of lab consumables items for mpmc lab - neo-6m gps module ,rain sensor ,dc water pump ,magnetic door sensor ,mpu-6050 module ,soil moisture sensor ,ir sensor module ,max30102 heart rate and pulse oximeter sensor module ,load cell ,hx711 24-bit dual-channel load cell amplifier weight sensor ,flame sensor ,servo motor ,piezo vibration sensor ,camera module ,sound sensor module ,oled display ,rfid module card & tag ,alkon plastic (aco39) polypropylene component organizer ,red jumber wire roll (22 gauge) ,black jumber wire roll (22 gauge) ,green jumber wire roll(22 gauge)

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 :45513716

02 Jul, 2026 NA

Hyderabad-T - Telangana

Tender For soil heat flux plates , digital barometer , soil moisture and temperature sensor , air temperature and relative humidity sensor

CTN :45427779

18 Jun, 2026 2.46 Lacs

Thanjavur - Tamil Nadu

Tender For supply of eee lab items - furniture, 5hp/3.75kw/415v1500rpm three phase(3 )synchronous motor with starting / loading arrangement and with work bench voltage:415v ac/220v dc for field excitation make: benn rating: 5hp/ 3.75kw speed:1500rpm no of poles : 4 synchronous starter dc excitation field current :0.8a digital voltmeter ac(0-500v) moving iron type:01qty digital ammeter ac(0-20a) moving iron type :01qty digital ammeter dc(0-2a) moving coil type :01qty digital power factor meter 600v/10a :01qty 3pole mcb/dc mcb with 20a fuse carrier and supply indicators (three pin plug socket should also be provided) :03qty digital rpm indicator with proximity sensor: 01qty banana connectors for motor/starter/supply outputs :01qty control panel (hylem sheet(5*1.5feet) with ms panel) :01 work bench spec: size: 4feet*3feet*2 1/2 feet height leg teak wood with top 3/4" inch plywood 18mm plywood withone mica sheet for finishing front side cupboard with door open and closed type back side wiring box with door open and closed type, performance of ultrasonic and moisture sensors(5v dc/15ma(40khz/digital output) arduino uno: microcontroller-atmega328p on-board digital sensor components two push button switches and dour leds buck converter and relay for 5v and potentiometer-one each 2x16 liquid crystal oscillator(lcd) and mini bread-one each onboard digital sensor modules: ultrasonic sensor module(3cm-100cm) and soil moisture sensor -one each all sensor modules should be mounted on legend size pcb, speed control of ac motor using variable frequency drive(vfd) (0.5hp/415ac/5a(3 )) variable frequency driver (vfd) unit: input voltage:single phase, 230v ac +-10%, 50hz output voltage : three phase output frequency range: 0 to 60hz suitable for 0.75kw motor output current 4.2a vf pattern of spwm control 2pole mcb for on/off control of mains ac voltmeter, ammeter and speed indicator should be provided external stop/start and frequency control should be provided output terminals should be provided and must be brought out in front panel experimental board should be housed in a cabinet with suitable cover three phase induction motor motor type:squirrel cage |rating:0.5hp voltage rating :415v ac speed :1440rpm+-5% insulation : class b/f

Central Government/Public Sector

CTN :45281449

11 Jun, 2026 NA

Jalandhar - Punjab

Tender For tender for supply of internet of things - arm based single board computer wi-fi + ble development board kit 32-bit arm based development board 32-bit mcu prototyping board temp & humidity sensor ultrasonic sensor air quality sensor pir motion sensor soil moisture sensor relay module (5v, 4-channel) servo motor camera module 5mp voice recognition module (offline) sound detection/microphone sensor module (basic)

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