Spectro Group of Companies - Measuring Instruments & Equipment

We are offering traverse thread counterslots in the slotted plate : 10, 12.7, 20, 25.4, 50mmviewing size of the fabric yarn : 10 xsource of light : 11w, 220 v ac.

The high quality Sound Level Meter offered by us is used to measure sound level in decibels (dB). These Sound Level Meters have an output port on the meter that records sound level data. Our Sound Level Meter is installed with a LCD panel, which allows you to use it as a stand-alone device.

We are offering conductivity meter. Specifications model: s 30conductivity : 0.01 s/cm 500 ms/cmtemperature: -5.0 105.0 ctds: 0.01 mg/l 500 g/lresistivity : 0.00 . 0.00 m cmresolution: 0.01 . 1 0.1 c 0.01 . 1accuracy: 0.5 % 0. c 0.5 %salinity: 0.00 . 80.00 ppt (parts per thousand)practical salinity scale unesco 1978natural sea water unesco 1966bsensor inputs: mini-dininterfaces: rs 3 (connection to printer or pc)power requirements: power adapter (9 v, dc) or four aa batteries (not incl.)size / weight : 180 x 180 x 65 mm / 610 gpackage / weight : 370 x 3 0 x 165 mm / 3.1 kg.

At present the ultrasonic pulse velocity method is the only one of this type that shows potential for testing concrete strength in situ. It measures the time of travel of an ultrasonic pulse passing through the concrete. The fundamental design features of all commercially available units are very similar, consisting of a pulse generator and a pulse receiver. Pulses are generated by shock-exciting piezo-electric crystals, with similar crystals used in the receiver3. The time taken for the pulse to pass through the concrete is measured by electronic measuring circuits. Pulse velocity tests can be carried out on both laboratory-sized specimens and completed concrete structures, but some factors affect measurement:1. There must be smooth contact with the surface under test; a coupling medium such as a thin film of oil is mandatory.2. It is desirable for path-lengths to be at least 12 in. (30 cm) in order to avoid any errors introduced by heterogeneity.3. It must be recognized that there is an increase in pulse velocity at below-freezing temperature owing to freezing of water; from 5 to 30C (41 - 86F) pulse velocities are not temperature dependent.4. The presence of reinforcing steel in concrete has an appreciable effect on pulse velocity. It is therefore desirable and often mandatory to choose pulse paths that avoid the influence of reinforcing steel or to make corrections if steel is in the pulse path.Applications and Limitations. The pulse velocity method is an ideal tool for establishing whether concrete is uniform. It can be used on both existing structures and those under construction. Usually, if large differences in pulse velocity are found within a structure for no apparent reason, there is strong reason to presume that defective or deteriorated concrete is present.

We are offering Gloss MeterGloss meter is gloss-measuring instrument particularly for image gloss in the surface of paints, plastic and paper etc. specifications:power : 1 pc of 5# battery beam : 20; 60; 85measuring range (gu) : 0-180; 0-150; 0-120 division (gu) : 0.1 stability value (gu) : 0.4 indicating value tolerance (gu) : 1.2 area of measurement (mm) 2.2 in 55x11 weight (g) 320 shape size (lxwxh) mm 145x33x65

We are offering stack monitoring kit. It is used for rapid and accurate measurements of concentrate gaseous pollutants such as so2, nox and also suspended particulate matter (spm) under isokinetic conditions, volumetric flow, linear velocity and stack gas temperature. It meets with epa regulations. Specifications model: SLE-SS113stack temperature range: ambient to 600c read on a digital pyrometer. Stack velocity range: 3 to 60 m/sec thermocouple: t/c sensor in ss 304 casing, length of inseration:1 m with 2 m long cablemanometer: digital with 0-1300 mm of h2o rangepitot tube : calibrated s-type fabricated - ss 304, 1m longparticulate sampling : 0-60 1pm collection on thimble type filter up to 0.3 micron ratinggaseous sampling : 0-6 1pm collection in a set of borosillicate glass impingers. Rotameter: acrylic body with 2 % fsd accuracy, 0-60 lpm for pm and 0-6 lpm for gas. Sampling probe : 1m long ss tube filter holder: filter holder suitable to hold either cellulose filteration thimble (size 28mm id x 100 mm long) or glass fibre thimble (size 19mm id x 90 mm long). nozzels : a set of 3 nozzles made of ss 304. digital clock: 0-60 minutes, 1 second readout with start and stop switches. sampling train: glass impinger 1 no. 240ml, glass impinger I no. 120ml(silica) glass impinger 2 no. 120 ml (gas) vacuum pump: monoblock rotary vane type, oil free, 0.5 hp single phase motor (230v) with more than 50 1pm free flow capacity. features1. Specially designed to monitor pm & gaseous pollutants from stack/ chimney emissions. 2. Collection based on wet chemical techniques. measures total quantity / volume of the emissions3. Rugged & convenient for sampling with oil free vacuum pump assembly. 4. Accomodated in a suitcase for better accessibility. Convenient to use.

We are offering chlorine meter. application :applicable in the industry such as electric power, energy, and petrochemical to test the chlorine content in transmission grease. specifications model: sle-clmeasuring time: approximately half hourprecision: comply with dl433-92 standard. sample weight: 0.4-0.7g (accurate to the 4th decimal)power: 500kwdimension: 350mm260mm260mmweight: 5kgfeatures1. Adopt the newly developed single-head oxygen bomb which could charge and release oxygen automatically. Automatically check whether the ignition wire of oxygen bomb is connected well. 2. Introduce the high-efficient stirring technology by magnetic pump, enabling inner water convecting and cooling in a fast way.

We are offering ph meter. specifications model: fe 20measuring range: 0.0014.00ph -1999.1999mv 0c100c (32f.212f)resolution: 0.01ph 1 mv 0.1cerror limits: + 0.01ph + 1mv + 0.5ccalibrations 3 points 3 predefined buffer groups cmpower supply:100-240 v / 50-60 hz, 9v dcsize weight: 200 x 175 x 52mm/0.6 kgdisplay: liquid crystalinput: bnc, impedance>10e+12cinch, ntc 30k reference:2mmtemperature compensation: atc & mtchousing : abs/pc reinforced.

We are offering sand pouring cylinderthis apparatus is used for determination of dry density of compaction. The sand pouring cylinder (small) 115 mm dia is fitted with conical funnel and shutter 3 liter capacity, cylinder calibrating container 100 mm dia x 150 mm ht, a metal tray 300 mm x 300 mm x 40 mm with 100 mm central hole. Also available medium and large size sand pouring cylinder

We are offering speedy moisture meterthe unit consists of a pressure vessel with clamp for sealing cap, rubber sealing gasket, pressure gauge calibration in percentage moisture content 0-25% on the wet weight basis (6 gm) counter poised balance for weighing samples, scoop for measuring reagent carbide, bottle of reagent carbide and cleaning brush. Complete in highly polished wooden carrying case with handle. The unit can be used to determine percentage moisture content on the wet weight basis upto 25% which is equal to 33.3% moisture content on the dry weight basis. Same as above but 0-50% moisture meter also available.

We are offering coating thickness meter.this is used for measuring non-magnetic materials thickness on magnetic bases. display: 4 digit 10mm lcdthickness range: 0 2000 micronsaccuracy (resolution): 0.5%+1digit (0.1(100 micron))sensor type: magneticsampling time: 1 secpower off: auto / manualaccessories: carrying case, one base block, calibration blockaux. Supply: 4 x 1.5v aa size batterycabinet size: 161 x 69 x 32mm abs plastic