OXY-LC Oxygen Sensor Interface Board Description The OXY-LC Oxygen Sensor Interface Electronics provides the necessary electronics to power and control SST range of zirconium dioxide (ZrO2) sensors. The OXY-LC Oxygen Sensor offers various user configurable output variants RS485, PWM, 0-10Vdc and 4-20mA. The RS485 Modbus RTU Protocol offers various benefits over other output types but most importantly it allows complete control of the sensor operation and access to all available information including sensor diagnostics, barometric pressure and pressure sensor temperature. The adaptive software filtering which enables it to provide a fast response coupled with a stable oxygen output. In addition to this, the OXY-LC Oxygen sensor interface electronics offers a high accuracy linear output for all of our zirconium dioxide oxygen sensors. The built in pressure sensor allows for barometric pressure compensation and the interface mounted screw terminals offers easy wiring with reverse voltage and transient overvoltage. OXY-LC Oxygen Sensor Interface Board FEATURES * Provides the electronics necessary to power and control SST range of zirconium dioxide (ZrO2 ) sensors * Built in pressure sensor for barometric pressure compensation * Interface mounted screw terminals for easy wiring with reverse voltage and transient overvoltage OXY-LC Oxygen Sensor Interface Board BENEFITS * Adaptive software filtering provides a fast sensor response coupled with a stable oxygen output * High accuracy linear outpu t
Rdo-200 fluorescence dissolved oxygen sensor application Widely used in online dissolved oxygen monitoring for power plant, chemical, industrial wastewater, pharmaceutical, biochemical and water treatment industry. Rdo-200 fluorescence dissolved oxygen sensor feature * 0-20mg/l or 0-200% saturation * 0 ~ 50'c; ip68 protection rating * no film, no electrolyte, not polarization * no consumption of oxygen, the flow rate is not affected * built-in temperature sensor, automatic temperature compensation * chemical interference from sulfide * in drift, fast response, more accurate measurements * maintenance-free longer applicable period, lower cost * fluorescent cap replacement is simple * supports rs-485, modbus protocol Technical instructions Do range: -20mg/l 0-20 mg/l or 0-200% saturation Reaction time: 10 sec Degree of protection: ip68 Do accuracy±1% Sensor drift:
Submersible galvanic dissolved oxygen sensors Item no.: do6400/h, do6400/t, do6400tc/h, do6400tc/t, do6441/t, do6442/t, Do7400/h, do7400/t, do7400tc/h, do7400tc/t, do7441/t, do7442/t Large solution capacity for long term deployment Models with and without temperature sensor Easy installation and maintenance Mv or 4-20ma output models available The do6400 & 7400 series dissolved oxygen sensors feature a large capacity electrolyte holder, positive fit, easy to replace membrane and dependable galvanic cell technology for long term deployment. The body design ensures a good grip when wet. Ideal for aquaculture and wastewater monitoring applications, these sensors require minimal maintenance. Ptfe or high-density polyethylene (hdpe) membranes are available. 2 replacement membranes, installation tool and electrolyte are included. Additonal maintennace parts are in convenient kits (see ordering information). Sensors with mv output as well as built-in 4-20ma output in 0-100% and 0-200% saturation range are available. Dissolved oxygen sensors specifications O2 measuring range: Do6400, do6400tc (0.5-20ppm), do6441(0-100%), do6442(0-200%) Do7400, do7400tc (0.03-20ppm), do7441(0-100%), do7442(0-200%) Body: material noryl Cathode: silver Anode: zinc (do6400 series), lead (do7400 series) Maximum temperature: 50 degrees c Power requirement: 12-36v dc (for models do6441, do6442, do7441 and do7442 only )
Zirconia O2 Sensors Probe Series - Short Housing The Probe Range of zirconium dioxide oxygen sensors are available in three lengths. Suitable for aggressive and polluted applications such as boiler exhausts. Longer probes are an ideal solution for thicker walled, insulated flue pipes. FEATURES * Zirconium dioxide (ZrO2) sensing elements * Long life, non-depleting technology * Integral heating element * High accuracy * Requires an external interface board to operate BENEFITS * No reference gas required * No need for temperature stabilisation * Compact enclosure TECHNICAL SPECIFICATIONS Heater voltage Operating (standard response) 4V DC ± 0.1V DC (1.7A) Standby 1.65V DC (0.7A) Operating (fast response) 4.35V DC ± 0.1V DC (1.85A) Standby 2V DC (0.85A) Pump impedance at 700'C < 6kΩ Permissible gas temperature -100'C to +250'C Gas flow rate 0 ~ 10 m/s Repetitive permissible acceleration 5g Incidental permissible acceleration 30g OUTPUT VALUES Oxygen pressure range 2mbar ~ 3bar max Accuracy 5mbar max Internal operational temperature 700'C Response time (10 - 90% step) Standard response sensor < 15s Fast response sensor < 4s Warm up time (prior to sensor operation) 60s Warm up time (from standby) 20s Output stabilisation time ~ 180s
Zirconia O2 Sensors Probe Series - Long Housing FEATURES * Zirconium dioxide (ZrO2) sensing elements * Long life, non-depleting technology * Integral heating element * High accuracy * Requires an external interface board to operate BENEFITS * No reference gas required * No need for temperature stabilisation * Two lengths available; 220mm and 400mm TECHNICAL SPECIFICATIONS Heater voltage Operating 4V DC ± 0.1V DC (1.7A) Standby 1.65V DC (0.7A) Pump impedance at 700'C < 6kohm Permissible gas temperature Standard temperature -100'C to +250'C High temperature -100'C to +400'C Gas flow rate 0 - 10 m/s Repetitive permissible acceleration 5g Incidental permissible acceleration 30g OUTPUT VALUES Oxygen pressure range 2mbar - 3bar max Accuracy 5 mbar max Internal operational temperature 700'C Response time (10 - 90% step) < 15s Warm up time (prior to sensor operation) 100s Warm up time (from stand by) 20s Output stabilisation time ~ 180s
FEATURES * Oxygen pressure range 2 mbar - 3bar * Zirconium dioxide (ZrO2 ) sensing elements * Non-consumption technology * Integral heating element * No need for temperature stabilisation * No reference gas required * High accuracy * Linear output signal * Operates with external interface boards SPECIFICATIONS Heater Voltage Porous Cap (15mm) 4.35V DC ± 0.1V DC (1.85A) Stand by 2V DC (0.85A) Pump resistance @ 700'C < 6k� Permissible gas temperature -100 to 250'C Gas flow rate 0 to 10 m/s Repetitive permissible acceleration 5 g Incidental permissible acceleration 30 g z
O2I-Flex Oxygen Sensor Interface Board FEATURES * Provides the electronics necessary to power and control SST's range of zirconium dioxide (ZrO2 ) sensors * Externally triggered automatic or manual calibration. Calibration can also be initiated via an on-board push button * Power and sensor operating LEDs * Removable polarised screw terminals for easy wiring BENEFITS * Adaptive software filtering provides a fast sensor response coupled with a stable oxygen output * High accuracy linear output * Can be calibrated in fresh air (20.7% O2 ) or in any other known O2 concentration TECHNICAL SPECIFICATIONS Supply voltage 24V DC ± 10% Supply current 600mA max. at 24V DC Digital output RS232 Analogue output 4 ~ 20mA; load 100 ~ 600Ω or 0 ~ 10V DC ; load 10kΩ min Temperature limits Storage: -10'C to +70'C Operating: -10'C to +70'C Oxygen pressure limits 1 ~ 1000mbar OUTPUT VALUES Oxygen range (analogue output) 0.1 ~ 25% O2 or 0.1 ~ 100% O2 Oxygen range (RS232 output) 0.1 ~ 100% O2 Accuracy after calibration 1% O2 Repeatability after calibration 0.5% O2 Output resolution: 0-10V DC : 0.01V 4-20mA: 0.01mA RS232: 0.01% O2 Response time (step 10-90%) Fast response sensor connected: < 4s Standard response sensor connected: < 15s Initial warm up time (till stable output) 5 ~ 10mins Output inactive start up delay (heater warm up) 60s
Oxygen sensor o2 gas sensor for portable gas detector Model number: o2-a2 Performance Output µa @ 20.9% o2 80 to 120 Response time t90 (s) from 20.9% to 0% o2 < 15 Zero current µa in n2 < 2.5 Linearity % o2 deviation @ 10% o2 0.6 Lifetime Output drift % change in output @ 3 months < 1 Operating life months until 85% original output of 20.9% o2 > 24 Environmental Humidity sensitivity % o2 change: 0% to 95% rh @ 40°c < 0.7 Co2 sensitivity % (change o2 reading) / % co2 @ 5% co2 0.1 Pressure sensitivity (% change of output)/(% change of pressure) @ 20kpa < 0.1 Key specifications Temperature range °c -30 to 55 Pressure range kpa 80 to 120 Humidity range % rh continuous (0 to 99% rh short term) 5 to 95 Storage period months @ 3 to 20°c (store in sealed pot, open circuit) 6 Load resistor o (recommended) 47 to 100 Diameter mm (including label) 20.0 Height mm (including foam ring) 17.4 Weight g < 16
These screws are known for their self-drilling point that will drill and thread without the need for pre-drilling. These screws are designed for drilling their own hole into softer materials such as wood and plastic so they don't need a pilot hole. Hex head self-tapping screws are used for sheet metal to sheet metal fastening. The main advantage of the self-drilling screw is that it won't get stuck in the material and break off. Albeit it is required to use a washer with the screws to ensure that the structure doesnot loosen up over time. In HELLARY these screws are available in different finishes. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear.
Pan Head Screws
Socket Button Head Screw
Product Origin-Kolkata,West Bengal,India. We have Fasteners of grade 4.6,5.6,6.8, grade 8.8, grade 10.9 and grade 12.9. H.S. CODE-7318(Commonly) Minimum Order Quantity-2.5 Mt Packaging Details:Generally packaging comes in a 50Kg gunny bag package,but it can be changed according to the party's choice
Size- 35x8
Thread Rolling Dies for Self Tapping Screws, Wood Screws, ChipBoard Screws, Dry Wall Screws, Y-type, A-Type, B-Type,and can manufacture upto 160 mm Thread Length we can also manufacture dies according the customer specification. For 1 Set = 1 Kg.
Fasteners with a tapered shank (self-tapping screws) chipboard screw & particle board screw Similar to a drywall screw except that it has a thinner shank and provides better resistance to pull-out in particle board, while offset against a lower shear strength. The threads on particle board screws are asymmetrical. concrete screw& Tapcons & masonry screw & confast screw & blue screw & self-tapping screw & Titen A stainless or carbon steel screw for fastening wood, metal, or other materials into concrete or masonry. Concrete screws are commonly blue in color, with or without corrosion coating. They may either have a Phillips flat head or a slotted hex washer head. Heads sizes range from 0.1875 to 0.375 in (4.763 to 9.525 mm) and lengths from 1.25 to 5 in (32 to 127 mm). Typically an installer uses a hammer drill to make a pilot hole for each concrete screw. deck screw Similar to drywall screw except that it has improved corrosion resistance and is generally supplied in a larger gauge. Most deck screws have a type-17 (auger type) thread cutting tip for installation into decking materials. They have bugle heads that allows the screw to depress the wood surface without breaking it. double ended screw & dowel screw & hanger bolt Similar to a wood screw but with two pointed ends and no head, used for making hidden joints between two pieces of wood. A hanger bolt has wood screw threads on one end and machine threads on the other. A hanger bolt is used when it is necessary to fasten a metal part to a wood surface. drive screw & hammer drive screw Chiefly used for attaching manufacturers data plates to equipment. Smooth round or mushroom headed with a multi-start thread on the shank, beneath which is reduced diameter shank that acts as a pilot. The screw is fastened by hitting the head with a hammer and is not intended for removal drywall screw Specialized screw with a bugle head that is designed to attach drywall to wood or metal studs, however it is a versatile construction fastener with many uses. The diameter of drywall screw threads is larger than the grip diameter. eye screw & screw eye & vine eye Screw with a looped head. Larger ones are sometimes called lag eye screws. Designed to be used as attachment point, particularly for something that is hung from it. A vine eye (in the UK at least) is similar to a screw eye, except that it has a proportionally longer shank and smaller looped head. As the term suggests vine eyes are often used for attaching wire lines across the surface of buildings so that climbing plants can attach themselves.
O2-M2 Oxygen Sensor Description Alphasense Oxygen sensors use capillary flow control. Unlike partial pressure oxygen sensors, they have good pressure and temperature dependence, making them the best choice in safety applications. Standard galavanic sensors use lead for greatest reliability but fixed lifetime. Specifications * Output: 80 to 120 uA @ 20.9% O2 * Response time t90: < 15 (s) from 20.9% to 0% O2 * Linearity: 0.6 % O2 deviation @ 10% O2 * Operating life: > 24 months *Temperature range: -30 to 55 'C * Pressure range: 80 to 120 kPa * Humidity range: 5 to 95 % rh continuous * Diameter: 20.0 mm (including label) * Heigh: 17.4 mm (including foam ring) * Weight: < 16g
WQ401 Dissolved Oxygen Sensor Description WQ401 Dissolved Oxygen Sensor is a rugged and reliable water oxygen measuring device. The WQ401's sensor is attached to 25 ft of marine grade cable, with lengths up to 500 ft available upon request. The sensor's output is 4-20 mA with a three wire configuration. The sensor's electronics are completely encapsulated in marine grade epoxy within a stainless steel housing. The unit uses a removable shield and dissolved oxygen element for easy maintenance. WQ401 Dissolved Oxygen Sensor Features * Measure dissolved oxygen in situ * Fully encapsulated electronics * 4-20 mA output * Marine grade cable with strain relief * Stainless steel housing * Replaceable dissolved oxygen element WQ401 Dissolved Oxygen Sensor Applications Ideal for stream and lake monitoring, aquaculture studies, baseline analyses, mitigation monitoring, and other environmental applications. WQ401 Dissolved Oxygen Sensor Specifications * Output: 4-20 mA * Range: 0 to 100% saturation, 0 to 8 ppm, temperature compensated to 77'F (25'C) * Accuracy: ±0.5% full scale * Maximum Pressure: 40 psi * Operating Voltage: 10 to 36 VDC * Current Draw: 15.5 mA plus sensor output * Warm-up Time: 10 seconds minimum * Operating Temperature: -40 to +131'F (-40 to +55'C)
OPTOD Optical Dissolved Oxygen & Temperature Sensor Optical technology: The OPTOD sensor is based on luminescent optical technology and is approved by the ASTM International Standard Method D888-05. Without calibration requirements, and thanks to an ultra low power technology, the OPTOD sensor is suitable for field work as well as long and short term monitoring. With no oxygen consumption, this technology gives an accurate measure in all situations, even in very low oxygen concentrations. Digital Technology: The "smart" OPTOD sensor stores calibration and history data within the sensor. This allows you a "plug and play" system without re-calibration. Digitally optimised measurement technology * Optical luminescence technology requires minimal maintenance * Digital sensor: Modbus RS-485 * No calibration required and therefore little to no drift occurs * Robust and Watertight OPTOD Optical Dissolved Oxygen & Temperature Sensor Applications * Industrial effluent treatment * Urban waste water treatment * Surface water monitoring * Drinking water OPTOD Optical Dissolved Oxygen & Temperature Sensor Specifications * Measurement ranges: 0.00 to 20.00 mg/L * Resolution: 0,01 * Accuracy: +/- 0.1mg/L, +/- 0.1 ppm, +/- 1 % * Response time: 90% of the value in less than 60 seconds * Temperature compensation: Via CTN * Operating temperature: -10°C to +60'C * Signal interface: Modbus RS-485 (standard) and SDI-12 (option) * Sensor power-supply: 5 to 12 volts
Do1200 and do1200tc dissolved oxygen sensors Item no.: do1200/h, do1200/t, do1200tc/h, do1200tc/t, 971598, 971598tc Do1200 dissolved oxygen sensor features * reliable galvanic sensing technology * compact 12mm design * for portable, laboratory or on-line use * optional integral atc element * easy to use pre-membraned replacement caps Do1200 dissolved oxygen sensor description The do1200 and do1200tc feature dependable galvanic technology. No warm up period is required. Sensors are supplied with fast responding hdpe membrane caps for portable or lab use. Optional ptfe membrane caps are available for on-line or heavy uv exposure applications. Fill solution is replaceable when required. The do1200 is supplied without internal temperature compensation. The do1200tc can be supplied with a variety of user defined atc elements. Standard cable length is 2.5 feet with a tinned lead termination. Longer cable lengths and connectors are available for an additional charge. For on-line use, our fc75p 3/4 inch in-line fitting may be ordered to provide for mounting into 3/4 inch fnpt threaded tees. Do1200 dissolved oxygen sensor specifications * range: 0-20 mg/l * body material: epoxy and noryl * max temperature: 50 degrees c * saturation output: hdpe = 47mv +/- 9mv, ptfe = 33mv+/-9mv * pressure: 0-100 psig (7.5 bar) * calibration: single point in air * response time: after equilibration, hdpe 1 minute for 2mv, ptfe 2 minutes for 2mv
Features * oxygen pressure range 2 mbar - 3bar * zirconium dioxide (zro2 ) sensing elements * non-consumption technology * integral heating element * no need for temperature stabilisation * no reference gas required * high accuracy * linear output signal * operates with external interface boards Specifications Heater voltage: Porous cap (15mm): 4.35v dc +/- 0.1v dc (1.85a) Stand by: 2v dc (0.85a) Pump resistance @ 700'C: < 6kOhm Permissible gas temperature: -100 to 250C Gas flow rate: 0 to 10 m/s Repetitive permissible acceleration: 5 g Incidental permissible acceleration: 30 g
