Albertel Technologies

Kanjiramattom, Ernakulam, Kerala

We present cutting-edge Calibration Bench to our reputed clients. These Calibration Benches are fabricated with the use of high quality component to ensure perfect functioning. Our Calibration Benches are known for their smart control panel which makes it easy to operate it. These Calibration Benches are in conformation to the international standards and have accurate functioning.

Features Of Calibration Bench :

• mA/mV/ Source& measure
• Mercury &Water Manometers
• 250 mm Dial Test Gauge
• 230ac 24V D.C Power Supplies

Used For :

• Primary Level / Precision Calibration & Testing of Pneumatic instruments
• Electro-Pneumatic & Hydraulic Pressure instruments

Our DL04/DL08/DL-16 Temperature Data Loggers are our 4/8/16-channel, RTD based temperature recorders. This Temperature Data Logger is an all-in-one compact, portable, easy-to-use device that will measure and record up to 10, 922 measurements per channel. Our Temperature Data Logger can be operated directly by 220V AC or (either by two parallel 9V Lithium batteries for 36 hours continuously its optional). The strong medium is non-volatile solid-state memory, providing maximum data security even if the battery becomes discharged. The Temperature Data Logger can be started and stopped directly from your computer and its small size allows it to fit almost anywhere. We are offering additional Digital Display in front of the cold stores, processing halls etc so you can keep our master units near to your computer. The Data Logger makes data retrieval quick and easy. Simply plug it into an available COM port and the easy-to-use windows software does the rest. The Windows software converts the PC into a real time strip chart recorder. Data can be printed in graphical or tabular format and can also be exported to a text or Microsoft excel file. Advantages Of Temperature Data Logger :

• 100pt RTD input
• Real time operation
• Programmable start time
• U set calibration through software
• 0.1 degree resolution

We present highly reliable Level Transmitters to our reputed clients. A study of transmission line theory is required to prove this phenomenon. An equivalent circuit for the coated section is shown as a ladder network producing the phase shifted error signal. One way to cancel the error signal is to measure the conductive component (c) shown in Figure 3 Method A. Since the 45^o relationship exists, the capacitive error component (e) is the same magnitude and can be subtracted from the total output signal, thus effectively canceling the error signal. Another cancellation method use is to introduce a 45 phase shift to the entire measurement as shown in Figure 3, Method B. This automatically cancels the coating error portion because the conductance component (c) still has the same magnitude as the error component (e), resulting in the appropriate level signal. For Continues Level & Volume Measurement Of All Liquids, Slurries & Powders :

• Electronic cancellation of conductive coating on probes
• Specially designed to use with strong acids & alkalis
• Fully insulated probe for conductive liquids
• No maintenance & probe cleaning v250 khz. Operation
• Factory calibrated transmitter
• 4 20 ma , 3wire
• 10 32 v dc power supply
• Programmable display & control unit with bar graph
• Up to 4 change over contact output (h, l, hh &ll)
• Volume, level & percentage display

Suitable For :

• All acids
• Alkalis & chemical solvents milk
• Beverages
• Powders latex & paints
• Water, diesel & edible & non edible oils effluents

Basic Measurement Principle :A capacitor is formed when a level-sensing electrode is installed in a vessel. The metal rod of the electrode acts as one plate of the capacitor and the tank wall (or reference electrode in a non-metallic vessel) acts as the other plate. As the level of the material being measured rises, the air or gas normally surrounding the electrode is displaced by the material's different dielectric constant. The value of the capacitor changes because the dielectric between the two plates has changed. RF capacitance instruments detect this change and convert it into a relay actuation or proportional output signal. The following equation illustrates the capacitance relationship: C = 0.225 K (A+D)Where :C = Capacitance in pico faradsK = Dielectric Constant of materialA = Area of plates in square inchesD = Distance between the plates in inches The dielectric constant is a numerical value between 1 and 100 that relates to the ability of the dielectric (material measured between the plates) to store an electrostatic charge. The dielectric constant of a material is determined in an actual test cell. In actual practice, capacitance change is produced in different ways depending on the material being measured and the level electrode being used. However, the basic principle always applies. If a higher dielectric material replaces a lower one, the total capacitance output of the system will increase. If the electrode is made larger (effectively increasing the surface area) the capacitance output increases; if the distance between measuring electrode and reference decreases, then the capacitance output increases. Non-Conductive Materials :The capacitance changes as material comes between the plates of the capacitor. For example, suppose the sensor and the metal walls are measuring the increasing level of a non-conductive material such as oil. Figure 1 depicts a typical system. While the actual capacitive equation is very complex, it can be approximated for the above example as follows : C = 0.225 (K air x A air) + 0.225 (K material x A material)Dair Dmaterial Since the electrode and tank wall are fixed in place, the distance between them will not vary. Similarly, the dielectric of air (1) and the measured material, oil (3.1), also remain constant. Therefore, the capacitance output of the system example can be reduced to this very basic equation: C = (1 x A air) + (3.1 x A material) As this equation demonstrates, the more material in the tank, the higher the capacitance output will be. The capacitance is directly proportional to the level of the measured material. Conductive Materials :The same logic for nonconductive materials applies to conductive materials, except that conductive material acts as the ground plate of the capacitor rather than the tank wall. This changes the distance aspect of the equation, whereby the output would be comparatively higher than for a nonconductive material. However, it still remains fixed; therefore, as level rises on the vertically mounted sensor, the output increases proportionately. A material is considered conductive when it has a conductivity value of greater than 10 micro Siemens /cm. The level-sensing electrode must be insulated. A non insulated sensor is tip sensitive and acts like a conductive switch. Material Buildup :The most devastating effect on the accuracy of RF capacitive measurements is caused by the buildup of conductive material on the electrode surface. Non-conductive buildup is not as serious since it only represents a small part of the total capacitance. The Level Probe :The probe used in this device is a stainless steel rod, fully insulated with HDPE/PTFE which does not make any direct contact with the medium. The capacitance formed by the probe rod and the conductive material is proportional to the level of material in the tank (ie), as the level increases the capacitance also increases. The Transmitter :A crystal controlled radio frequency sine wave of fixed peak voltage is passed through the capacitance formed by the tank body and the probe in series with a known capacitance. The voltage drop across the fixed capacitor will be 90 out of phase with the applied wave form and is proportional to the tank capacitance. Compensating For Conductive Material Buildup :Coating error is illustrated by the diagram shown in Figure 2. The submerged portion of the electrode generates nearly a pure capacitive susceptance. Since the electrode is insulated, a conductive component is virtually non-existent. However, the upper section of the electrode, coated with conductive material, generates an error signal consisting of a capacitive susceptance and a conductive component. The result is an admittance component that is 45 out of phase with the main level signal.

Specifications

Transmitter & Probe Principle of Operation	RF Capacitance/Admittance
Probe	Fully Insulated (HDPE/PTFE)SS rod/Coaxial Probe
Probe Length	As per the tank height
Enclosure	Nylon
Compensation for moisture	Provided
Enclosure Protection	Weather proof- IP65
Wetted Parts	SS 316/ HDPE/PTFE
Process Connection	Flanged /screwed
Flange Standard	ANSI
Flange Size & Rating	1 " 150 lb.
Mounting	Silo Top
Electrical Connection	" E.T
Power Supply	10 to32 V, DC(or from display unit)
Cable Type & Size	3core x 0.75 sq.mm screened PVC cable
Output	4 - 20 mA
Dimensions	65 mm () x 100mm (H)

Control & Display Unit (Micro Controller Based)

Power Supply	220V, AC, 50 Hz./ 24V, DC
Power Consumption	< 10 Watts.
Sensitivity Adjustment	Provided
Enclosure	Weatherproof
Mounting	Wall mounted / Panel Mounted
Alarms	Upper & Lower limit, 230V, 5A change over contacts
Display	5 Digit LED Display /4Digit LED +20segment Bargraph
Calibration	Field Calibration Facility
Accuracy	0.01% of FS
Resolution	1/65000
Dimensions	92mm x92mm x110mm /48mm x 92mm x110mm

We are a reputed Digital Display Manufacturer, Exporter and Supplier in Ernakulam, Kerala. This Digital Display Process Indicator is designed to display almost all parameter used in industry like temperature, pressure, level, flow, humidity, pH, etc. It accepted all standers inputs such as thermocouple, RTD, mv, ma. Our Digital Display is very easy to operate and is highly functional. These Digital Display have long service life due to the use of bets quality components in the production process. Why Our Digital Display?

• Distant visibility
• Longer lasting
• Smooth functioning
• No maintenance

Used For The Indication of :

• Clock indication
• Temperature
• Parameter indication
• Humidity

We bring forth highly efficient range of pH Controllers. This pH Controller is a user-friendly device which can accurately control the load signals. Used in Electrical and various other industries, these pH Controllers are user-friendly devices. Our pH Controller has electrode self cleaning system and is highly functional. These pH Controllers come with a weather-proof enclosure to offer safe usage. Why Our pH Controller?

• 4 20 mA output for 0 14 pH
• Weather proof enclosure
• Electrode self cleaning system
• 2 set Relay output solenoid
• Valve operation
• pH /Millivolt &Temperature
• Display : Front panel calibration

Leveraging upon our expertise in this field, we manufacture pH Transmitters. Compactly designed, our pH Transmitters are highly efficient in the transmission of load signals. These pH Transmitters are manufactured with the use of sophisticated components that make them very functional. Our pH Transmitters can be obtained at market leading prices. Why Our pH Transmitters?

• 4 20 mA output for 0 14 pH
• Weather proof enclosure
• Electrode self cleaning system
• 2 set Relay output solenoid
• Valve operation
• pH /Millivolt &Temperature
• Display : Front panel calibration

Igbt based buck power factor correction dc supply for single &3phase ups. 2 to 100kva , dc voltages 48 to 400.Powerfactor >0.99 , from 10% load to 100% loads