For converting thermocouple or Pt-100 or resistance signal to equivalent 4-20mA signal for long distance transmission.

A capacitance is formed between the probe and the vessel wall .As the level of the measuring medium rises or falls capacitance between the probe and vessel wall changes proportionately. A high frequency sine wave is applied between the probe and tank wall. A change of medium level will induce a change in the current of the applied sine wave. Fromwhen the capacitance in the vessel increase, impedance will decrease and current will increase and vice-versa. (Z=Resistance, C=Capacitance, F= Frequency)

Head mounted electronics converts the capacitance variation to 4-20mA signal for long distance transmission. It is provided with trimpots for SPAN and ZERO adjustments. With no moving parts it is free from wear and tear, rugged and robust in construction. No dead zone like float based instruments.

It must be ensured that the probe is parallel to the tank wall throughout it's length.

While sending enquiries for capacitance type level transmitters, please furnish following informations to enable us to submit a suitable offer:

• Name of service Medium/Liquid
• Dielectric constant of the medium.
• Operating Temperature and pressure. Does the temperature vary? If so how much?
• Nature of liquid - Foaming, Viscous, Sticky etc.
• If agitation is involved whether sufficient space is available for probe between agitator and tank wall to avoid damage.
• Material of tank - Metallic or Non- Metallic
• If mounted on nozzle, height of nozzle, with tank dimensions and drawings.

Utilising the basic principle of - liquids find their level - tubular level gauges have been the most preferred and economical means of direct liquid level indication since time immemorial. Various means of glass tube protections- 3 plate glass protection, 3 guard rods, pipe guard or C-channel protections are in popular use. Our level gauges have C-channel protection of 2 mm thick sheet metal, making it robust and sturdy.

A black powder coated aluminium engraved scale with white numerals & markings is provided for indication of the level of liquid in millimeter or Litres as required. Scale shall have minimum graduation of 5 mm.

Process connections can be threaded or flanged to customer specifications. Isolating cock valves/needle valves or isolating needle valves with safety ball-check protection to prevent spilling/leakage by automatic shut-off in the event of glass tube breakage- are optional features.

• No Power Consumption . Will not be affected by power failure.
• A level transmitter or magnetic switch can be installed and adjusted without disturbing the process.
• 360 degree magnetic-flux field provides constant interaction with roller assembly in turbulent liquids.
• Roller channel and outer housing is of black powder coated aluminium. Outer housing in stainless steel as optional.
• Rollers are of glass filled Nylon / ABS plastic.
• Rollers move on Delrin bush bearings. Delrin is a self lubricating type material and hence movement will be frictionless, thus ensuring long life.
• Front window is of crystal clear acrylic.
• Acrylic windows has a U-gasket i.e. double gasket-gasket on top & bottom side ensuring perfect sealing on both side.
• Compact, rugged and field proven.
• In our level gauges the primary magnet attached to float is 360 degree rare earth. Rare Earth magnet has an unusually high energy output and is highly resistant to demagnetization, they will not demagnetize at high temperatures like ceramic magnets.

• Applicable in environment with high temp., high pressure, strong acid, strong alkaline and hazardous locations.
• Multiple applications for textile dyeing, sewage water processing, power generating, boiler and petrochemical industries.

• MAHALAXMI MAKE Float & Board Type Level Indicators are used for accurate Liquid Level Gauging of xed roof tanks storing oil, water, solvents and other products. The units are designed for simple, easy installation for Tanks-in-Service or Tanks - out - service and to provide a maximum of trouble free service.
• The Indicators are specially recommended for application requiring a low cost, low maintenance method for liquid level gauging and where operations necessitate accuracy to 25 mm +/-.
• The Indicators are oat - operated with a steel target that runs vertically up and down, registering tank contents on a calibrated board that is mounted outside of the tank for quick convenient readings.

• The sturdy design and stainless steel construction of the float is resistant to the corrosive effects of petroleum products and assures a long dependable use.
• In addition to the float assembly, the oat cable, guide wires and Indicator target guide wires are of Stainless Steel. The target assembly and fitting are of galvanized steel. The Gauge board is constructed of aluminium and has bold, legible markings in MM or CM with easy-to-read numerals every MM or CM.
• Stainless Steel gauges are also available on special order. The Level Gauge is also available in PP & PVC construction for HCL tanks.

Mahalaxmi make Ultrasonic Level transmitters are widely used to measure and control level of Solids and Liquids or distance of any objects. The sensor generates ultrasonic sound waves.From the time taken for the sound waves to strike the target and returnmthe Electronics computes the distance of the object and displays it in terms of distance or level-In millimeter, ln litres or a current signal of 4 to 20mA proportional to the level. The transmitter output may be connected to a PLC, Controller etc for Indication or/ and Control of level. Special electronics filter enables detection of largest target, automatically eliminating false echoes and rejecting noise clutter efficiently.

• Sensor Module imported from USA.
• Over Voltage/Surge Voltage protection.
• Reverse polarity protection.
• Direct or reverse action i.e., 4 to 20 mA or 20 to 4 mA selectable at site suitable for distance or level measurement.
• Power supply- 24 VDC
• Output: 4 to 20 mA, 3-wire & Rs485.
• Alpha-numeric LCD display.
• LCD Screen- 8 x 2 alphanumeric display green or Blue screen
• Push-Button Teach-in facility.
• Narrow beam angle of 10 degrees.
• Range 300 to 5000mm , 300 to 10000 mm.
• Dead Zone- 300mm
• Built-in Temperature compensation.
• LED Indication for Over current or under current
• Resolution-5 mm or 10mm depending on Models.
• Accuracy: + 0.25% FSD
• Updation Time- 150 mS.
• Power consumption- 1.5 Watts.
• Operating Temperature Range: - 4 to + 65 deg C.
• Enclosure: Blue Powder coated cast aluminium Flameproof or weather proof enclosure with front glass window or without glass window/Stainless Steel AISI 304 weather proof.
• Mounting: Flanged or Threaded to 2" ASA 150 Lbs Rf or 2"BSP(Male) or as required.

"MAHALAXMI" make cable float switch is a control device for filling and discharging pumps, motor and magnetic valves. It is also an alarm device at certain pre-determined surface levels. It is suitable for use in non-flammable liquids at 250 volts. In dangerous enviroments (e.g. wells and pumping stations) we recommend 24 V voltage. In potentially explosive atmospheres (e.g. oil tanks) the Switch can be used in conjunction with (Ex) i-isolator switch units. Due to its large float casing the float Switch has a buoyancy which guarantees smooth, trouble-free operation under all conditions. The switch has double chamber and a final remoulding finish to make it absolutely hermetic.

Installation :

Cable Float Switch is simply placed in the liquid so that the float follows the movement of the surface. The switching height differential is adjusted by moving the weight along the cable. The differential is minimum, when weight is nearest to the float. If the viscosity of the liquid is high, we recommend an extra weight on the cable.

For converting thermocouple or Pt-100 or resistance signal to equivalent 4-20mA signal for long distance transmission.

A capacitance is formed between the probe and the vessel wall .As the level of the measuring medium rises or falls capacitance between the probe and vessel wall changes proportionately. A high frequency sine wave is applied between the probe and tank wall. A change of medium level will induce a change in the current of the applied sine wave. Fromwhen the capacitance in the vessel increase, impedance will decrease and current will increase and vice-versa. (Z=Resistance, C=Capacitance, F= Frequency)

Head mounted electronics converts the capacitance variation to 4-20mA signal for long distance transmission. It is provided with trimpots for SPAN and ZERO adjustments. With no moving parts it is free from wear and tear, rugged and robust in construction. No dead zone like float based instruments.

It must be ensured that the probe is parallel to the tank wall throughout it's length.

While sending enquiries for capacitance type level transmitters, please furnish following informations to enable us to submit a suitable offer:

• Name of service Medium/Liquid
• Dielectric constant of the medium.
• Operating Temperature and pressure. Does the temperature vary? If so how much?
• Nature of liquid - Foaming, Viscous, Sticky etc.
• If agitation is involved whether sufficient space is available for probe between agitator and tank wall to avoid damage.
• Material of tank - Metallic or Non- Metallic
• If mounted on nozzle, height of nozzle, with tank dimensions and drawings.

Utilising the basic principle of - liquids find their level - tubular level gauges have been the most preferred and economical means of direct liquid level indication since time immemorial. Various means of glass tube protections- 3 plate glass protection, 3 guard rods, pipe guard or C-channel protections are in popular use. Our level gauges have C-channel protection of 2 mm thick sheet metal, making it robust and sturdy.

A black powder coated aluminium engraved scale with white numerals & markings is provided for indication of the level of liquid in millimeter or Litres as required. Scale shall have minimum graduation of 5 mm.

Process connections can be threaded or flanged to customer specifications. Isolating cock valves/needle valves or isolating needle valves with safety ball-check protection to prevent spilling/leakage by automatic shut-off in the event of glass tube breakage- are optional features.

• No Power Consumption . Will not be affected by power failure.
• A level transmitter or magnetic switch can be installed and adjusted without disturbing the process.
• 360 degree magnetic-flux field provides constant interaction with roller assembly in turbulent liquids.
• Roller channel and outer housing is of black powder coated aluminium. Outer housing in stainless steel as optional.
• Rollers are of glass filled Nylon / ABS plastic.
• Rollers move on Delrin bush bearings. Delrin is a self lubricating type material and hence movement will be frictionless, thus ensuring long life.
• Front window is of crystal clear acrylic.
• Acrylic windows has a U-gasket i.e. double gasket-gasket on top & bottom side ensuring perfect sealing on both side.
• Compact, rugged and field proven.
• In our level gauges the primary magnet attached to float is 360 degree rare earth. Rare Earth magnet has an unusually high energy output and is highly resistant to demagnetization, they will not demagnetize at high temperatures like ceramic magnets.

• Applicable in environment with high temp., high pressure, strong acid, strong alkaline and hazardous locations.
• Multiple applications for textile dyeing, sewage water processing, power generating, boiler and petrochemical industries.

• MAHALAXMI MAKE Float & Board Type Level Indicators are used for accurate Liquid Level Gauging of xed roof tanks storing oil, water, solvents and other products. The units are designed for simple, easy installation for Tanks-in-Service or Tanks - out - service and to provide a maximum of trouble free service.
• The Indicators are specially recommended for application requiring a low cost, low maintenance method for liquid level gauging and where operations necessitate accuracy to 25 mm +/-.
• The Indicators are oat - operated with a steel target that runs vertically up and down, registering tank contents on a calibrated board that is mounted outside of the tank for quick convenient readings.

• The sturdy design and stainless steel construction of the float is resistant to the corrosive effects of petroleum products and assures a long dependable use.
• In addition to the float assembly, the oat cable, guide wires and Indicator target guide wires are of Stainless Steel. The target assembly and fitting are of galvanized steel. The Gauge board is constructed of aluminium and has bold, legible markings in MM or CM with easy-to-read numerals every MM or CM.
• Stainless Steel gauges are also available on special order. The Level Gauge is also available in PP & PVC construction for HCL tanks.

Mahalaxmi make Ultrasonic Level transmitters are widely used to measure and control level of Solids and Liquids or distance of any objects. The sensor generates ultrasonic sound waves.From the time taken for the sound waves to strike the target and returnmthe Electronics computes the distance of the object and displays it in terms of distance or level-In millimeter, ln litres or a current signal of 4 to 20mA proportional to the level. The transmitter output may be connected to a PLC, Controller etc for Indication or/ and Control of level. Special electronics filter enables detection of largest target, automatically eliminating false echoes and rejecting noise clutter efficiently.

• Sensor Module imported from USA.
• Over Voltage/Surge Voltage protection.
• Reverse polarity protection.
• Direct or reverse action i.e., 4 to 20 mA or 20 to 4 mA selectable at site suitable for distance or level measurement.
• Power supply- 24 VDC
• Output: 4 to 20 mA, 3-wire & Rs485.
• Alpha-numeric LCD display.
• LCD Screen- 8 x 2 alphanumeric display green or Blue screen
• Push-Button Teach-in facility.
• Narrow beam angle of 10 degrees.
• Range 300 to 5000mm , 300 to 10000 mm.
• Dead Zone- 300mm
• Built-in Temperature compensation.
• LED Indication for Over current or under current
• Resolution-5 mm or 10mm depending on Models.
• Accuracy: + 0.25% FSD
• Updation Time- 150 mS.
• Power consumption- 1.5 Watts.
• Operating Temperature Range: - 4 to + 65 deg C.
• Enclosure: Blue Powder coated cast aluminium Flameproof or weather proof enclosure with front glass window or without glass window/Stainless Steel AISI 304 weather proof.
• Mounting: Flanged or Threaded to 2" ASA 150 Lbs Rf or 2"BSP(Male) or as required.

"MAHALAXMI" make cable float switch is a control device for filling and discharging pumps, motor and magnetic valves. It is also an alarm device at certain pre-determined surface levels. It is suitable for use in non-flammable liquids at 250 volts. In dangerous enviroments (e.g. wells and pumping stations) we recommend 24 V voltage. In potentially explosive atmospheres (e.g. oil tanks) the Switch can be used in conjunction with (Ex) i-isolator switch units. Due to its large float casing the float Switch has a buoyancy which guarantees smooth, trouble-free operation under all conditions. The switch has double chamber and a final remoulding finish to make it absolutely hermetic.

Installation :

Cable Float Switch is simply placed in the liquid so that the float follows the movement of the surface. The switching height differential is adjusted by moving the weight along the cable. The differential is minimum, when weight is nearest to the float. If the viscosity of the liquid is high, we recommend an extra weight on the cable.