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The Digital E3 Modulevel® is an advanced, intrinsically safe two-wire instrument utilizing simple buoyancy principle to detect and convert liquid level changes into a stable 4–20 mA output signal. The linkage between the
level sensing element and output electronics provides a simple mechanical design and construction. The vertical in-line design of the transmitter results in low instrument weight and simplified installation. The instrument comes in a variety of configurations and pressure ratings for varied applications.
The Digital E3 Modulevel has microprocessor-based electronics with HART® compatible output, in addition to the standard 4–20 mA output. E3 supports the FDT/DTM standard and a PACTware™ PC software package allows for additional configuration and trending capabilities.
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Special features:
Reliability
Robust construction with magnetic transmission of measured values.
Wide and clear scale.
Can be used in hazardous areas (Zone 0).
Technical data:
Range: up to 6 m
Connection: up to DN100 / ANSI 4"
Nominal pressure: up to PN 320
Process temperature: -50°C ... +260°C
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Continuous level sensors designed with potentiometric output signal, 3 adjustable alarms or 4/20mA converter. Brass stem and NBR float or stainless steel AISI 316 executions. Contact distance 10 or 15 mm. G1 1/4" - G2" thread connection of Ø52 - Ø92 flange in aluminium or stanless steel.
Executions approved for hazardous areas (EX zones) are also available.
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Electromagnetic, electromechanical and electronic sensors for controlling the level of all kinds of fluid.
Output with ON/OFF, SPDT or continuous signals
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These compact transmitters feature the rugged durability of stainless steel or brass construction. The XM-800 series provides analog output, and can be combined with Gems Digital Bargraph Display and Level Cube Receivers described in this catalog.
Completely electronic, Gems Liquid Level Transmitters provide reliable and durable remote tank gauging. A wide variety of material combinations provide compatibility for most small to mid-size tanks in both process and OEM applications; for deeper tanks (to 18 feet) look to Gems 36000 and 66000 Series.
Gems experienced engineering and sales staff can provide customized solutions for applications not satisfied by the standard transmitters shown in this catalog. Do not hesiatate to contact Gems if you require a configuration not shown here.
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Level sensor MG
Characteristics
Level sensor output 4 - 20mA or Vertical installation
Resistance output in three-wirepotentiometer circuit
Simple operating principle: Reed switch resistance measuring chain
Temperature range: -30°C to 150°C IP66 protection
12 mm accuracy grid Electrical connection: Connecting box coupler plug or cable
Areas of application:
The level sensors are ideal for industrial use because of their extreme reliability and robust mechanical construction.
They operate safely and reliably even under harsh service conditions and can be used in the following industries, among others:
Plant construction, Food industry, Biochemicals, Engineering
Chemicals, Offshore, Energy systems, Petrochemicals, Natural gas, Shipbuilding, Power stations, Pharmaceuticals etc.
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Level Monitoring
Level Measurement
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The vertically mounted TR420 with integral signal conditioner provides a reliable 4-20 mA proportional electronic output in tank levels up to twelve feet. Available with stainless steel, polypropylene or Buna floats and a wide selection of mounting styles and materials, the TR420 can be used to input programmable controllers, meters and other digital receivers for accurate and continuous measurement in many liquid level applications. The variety of float styles and densities afford the best and most direct means for continually monitoring surface interfaces of dissimilar liquids in a single tank.
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- Lenght up to 6000 mm.
- Brass, St. Steel, PVC, Polypropilene, PVDF
- 5, 10, 20 mm. accuracy
- Potenziometer resistatnce output
- 4-20 mA output (on request)
- Integrated LCD dispaly on request
- Max working pressure up to 40 bar
- Max working temperature 105°C or 150°C
- Protection class IP65
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Pneumatic tank contents gauges represent an economic solution for an accurate tank contents measurement with remote indication. The pneumatic tank contents gauge UNITOP requires no power supply, has an accuracy of ±2 % and can be installed up to a distance of 50 m from the tank. UNITOP functions safely and reliably and with millions in daily use, is well proven.
Inspite of that it was possible to incorporate into the new instrument generation a number of ideas. The new dual scale facilitates the contents supervision of rectangular and cylindrical tanks. Indication is provided in % of liquid height and is thereby in its basic form independent of the tank shape. Naturally, for all DIN-tanks and many special tanks slide-in scales with calibration in Litres are available, as are additional scales in Litres for specially shaped tanks. All adjustment possibilities and functions are clearly shown on the dial. A robust brass connection with cap nut for connecting a Ø 6 mm tube or hose ensure safe and airtight connection of the capillary line. A vent screw has now been integrated in the connector with which it is now easily possible to check the Zero position of the pointer. The measurement mechanism which is manufactured from highly stable engineering plastic is mounted separately from the instrument housing and thereby guarantees a stable Zero point and a high measuring accuracy. In addition, the instrument also houses an overpressure device and a consumption control with date indication.
UNITOP is available for use with the following liquids: Heating oil L, EL, diesel fuel, water and urea solution (AdBlue®).
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Innovative system for monitoring the fluid level inside atmospheric tanks. This system detects the static pressure generated by the fluid height by means of a tube and displays the fluid level up to 4 m., the volume or filling percentage. The control unit is provided with an intuitive and complete software that allows to set 2 alarm levels (SPDT) and/or activate remote alarm devices. High accuracy (+/- 1%). Very easy installation directly on the tank or at a distance up to 50 m. far.
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Enraf’s Field Display & Interface Unit (FDI) provides tank inventory information in the field, where it is needed. It is a versatile, EEx-d approved instrument with several interface options, which can even be part of W&M approved applications.
The design of the FDI is therefore based on reliable and uninterrupted data
supply in all circumstances. The unit can be used in stand alone mode using the Enraf Bi-phase Mark communication protocol for direct connection to an Enraf gauge, or any other gauge using this standard communication protocol in tank farms. The unit will interrogate the gauge and display its measured data.
To update its display in bigger installations where a remote tank inventory
system is available, the indicator listens to the communication between the field instrument and the remote system. When the communication between system and gauge fails, the FDI automatically takes over the scanning of the instrument to provide the measurement data in the field. After sensing the scanning from the system again, it returns to the original configuration.
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OCIO is an innovative system for monitoring the fluid level inside atmospheric tanks. The system detects the static pressure generated by the fluid height by means of a tube inserted in the tank and displays the fluid level or volume. The new design and suitable solutions guarantee a reliable and repeated level indication.
The system is composed of:
A tube for detecting the static pressure. The tube with its end is inserted from the top of the tank and dipped in the fluid down to the bottom of the tank.
A control unit for level display and system management. The unit is provided with intuitive and complete software and allows the connection of two alarm or lock devices.
By means of the software it is possible to:
- set the type and the dimensions of the tank
- define the level alarms
- define the level indication
- define the unit of measurement
- calibrate the instrument
Depending on the set alarm levels, the control unit activates or deactivates the contact working as a remote switch starting the alarm devices or cutting the power supply off the connected equipment
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Example:
-JUMO dTRANS p33 Pressure transmitter and level probe for use in hazardous areas (40.4753)
The type 404753 pressure transmitter measures the pressure in both corrosive and noncorrosive gases, vapors, liquids and dusts. The transmitter operates on the piezoresistive measuring principle. The output signal is a DC current that is proportional to the input pressure.
The type 404753 pressure transmitter fulfills the following requirements for equipment group II
in Zone 1 and 2 areas with an explosion hazard arising from gas (Gas).
The pressure connection (process connection) may, however, also be mounted on to zone 0.
in Zone 21 and 22 areas with an explosion hazard arising from dust (Dust)
The EC type-examination certificate is designated: SNCH 03 ATEX 3545.
The pressure transmitter can also be used as a level probe (extra code /406).
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Sensortechnics is a leading manufacturer and distributor of a wide range of sensors and fluid control devices. The product portfolio includes basic pressure sensors, rugged transmitters, submersible level sensors and customised pressure sensing systems from 1 mbar up to 1000 bar as well as liquid level sensors and switches, flow, oxygen and force sensors. Additionally, Sensortechnics offers ultrasonic air bubble, air-in-line, liquid level and fluid monitoring detectors. Fluid control devices include miniature solenoid valves, diaphragm pumps and electronic pressure controllers.
Sensortechnics has more than 25 years of experience in providing highly customised sensing products and in the development of complex integrated fluid control systems for OEM customers worldwide.
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Suspension pressure transmitter with CERTEC
For gauge measurements in water/waste water, deep wells and shipbuilding industry
All advantages in an overview
- dry, ceramic-capacitive sensor element
- two-wire system 4 … 20 mA
- integrated overvoltage protection
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Depth/Vented Level
Depth Sensor
Hydrolab offers high-stability, custom-made pressure sensors with four range options.
Features:
- Depth measures absolute hydrostatic pressure from an internal diaphragm
- Optimized for depths down to 10m, 25m, 100m, or 200m
Benefits:
- Vented level (0-10 m) uses a sealed dryer attached to a fixed cable that provides compensation for changes in barometric pressure.
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Relative pressure-type level sensing transmitter Type 681
0 ... 0.1 - 25 bar
The pressure transmitters of type 681 with piezoresistive measuring elements have compensated, adjusted and amplified sensor signals which are available as standard voltage or current outputs. In the immersion-sensor version with a salt water and oil-resistant connection cable they are specially suited for level measurement, even in the presence of corrosive liquids.
The cable incorporates a tube for compensation of the ambient pressure.
Manufactured from stainless steel, its welded construction provides a watertight seal.
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Hydrostatic level transmitters:
level transmitters types:
SGE-25, SGE-16 - analog level transmitters are applicable to measure liquid levels in tanks, deep wells or piezometers.
- measuring range from 1 up to 500mH2O
- output signal: 4-20mA, 0-10mA ( only version SGE-25), 0-2,5V (only version SGE-25).
- accuracy: 0,2%
SGE-25S, SGE-25C - analog level transmitters are applicable to measure levels of liquid containing contaminants or suspensions. A typical use for this probe is the measurement of levels of liquid waste in intermediate pumping stations, fermentation chambers.
- measuring range from 2 up to 20mH2O
- output signal: 4-20mA, 0-10mA, 0-2,5V
- accuracy: 0,5%
SGE-25.Smart, SGE-25S.Smart - smart level transmitters with output signal 4-20mA +Hart protocol.
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Submersible Level Transmitters
Submersible Level Transmitter -Series PBLT2 & PBLTX
316SS Construction, ±.25% Accuracy, Lightning & Surge Protected, Intrinstically Safe
Submersible Level Transmitter -Series SBLT2 & SBLTX
316SS Construction, ±0.25% Accuracy, Lightning Protected or Intrinsically Safe
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Hydrostatic Tank Gauging (HTG)
Enraf has been continually searching for new technologies and has developed remarkably innovative level measurement solutions tailored to your requirements. The techniques employed by Enraf tank gauging systems are complementary, yet each has its own advantage. The hydrostatic systems (HTG), which can be used in a mixed installation with SmartRadar level gauges and ATG and XTG servo gauges.
HTG is a system based on the use of intelligent hydrostatic pressure transmitters. Basically this system is designed for direct mass measurement. In the process industry, this technology is common used for deriving a level indication.
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Level measurement by hydrostatic pressure
The use of a pressure transmitter for the level measurement is an economical solution in particular for the chemical and petrochemical industries. The transmitter can be with direct or capillary mounted diaphragm seals.
These instruments can handle extreme chemical and mechanical loads and are no sensitive to electromagnetic interference. They can be used for all liquids, corrosive or not, and for closed or open tanks.
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Sensortechnics is a leading manufacturer and distributor of a wide range of sensors and fluid control devices. The product portfolio includes basic pressure sensors, rugged transmitters, submersible level sensors and customised pressure sensing systems from 1 mbar up to 1000 bar as well as liquid level sensors and switches, flow, oxygen and force sensors. Additionally, Sensortechnics offers ultrasonic air bubble, air-in-line, liquid level and fluid monitoring detectors. Fluid control devices include miniature solenoid valves, diaphragm pumps and electronic pressure controllers.
Sensortechnics has more than 25 years of experience in providing highly customised sensing products and in the development of complex integrated fluid control systems for OEM customers worldwide.
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Sitron's Hydrostatic Level Probes are specifically designed for depth/level measurements in groundwater, deep wells, water towers, rivers, sewage treatment plants and other similar applications. The Hydrostatic Level Probes are fully encapsulated and are housed in a weatherproof cylindrical enclosure. Offering a great degree of flexibility, they can be constructed with 316S.S. rigid rods or with special polyurethane, kevlar-lined, waterproof and vented cables for depth measurements.
These probes can be made with either 316 S.S. piezoresistive or ceramic cells. Their compact design enables the probes to work within pipe diameters as little as 3/4”. The 842 models are available with an electronic module within the enclosure providing a Zero/Span adjustment. All of Sitron's Hydrostatic Level Probes have a 4-20mA (2 wire) output signal and are fully temperature compensated.
FEATURES
*Simple Installation
*Fully Submersible NEMA 6P (IP68)
*Special polyurethane, Kevlar-lined and vented cables for long lengths
*Ceramic or 316 S.S. Piezoresistive cells
*Analog output 4-20mA Zero and Span adjustment
*Long term stability
*Sanitary connections available for food processing and pharmaceutical industries
*3A Approved
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-Suitable for immersion to 2000metre depth.
-Ranges up to 1000 bar.
-Stainless Steel, Monel and Hastelloy
-"Wetted" options.
-Intrinsically safe version to
-EEx ia IIC T5.
-0.15% Accuracy
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Measurement Specialties' Ultrastable transducers are packaged for liquid level measurement. The LM series mounts externally onto a tank, and the LP series is fully submersible in water or corrosive liquids.
Description: The LM Series incorporates stainless steel and plastic isolation suitable for level sensing in water, other liquid and gas. The LM series uses a patent pending low cost stainless steel sensor in a PVC plastic fitting. The modular design is adaptable to an infinite number of plastic port variations. With high performance in a small form factor, the LM Series enables the miniaturization of high accuracy pressure and vacuum systems. The standard output is .5V to 4.5V with a 5V supply.
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Measurement Principle:
A low energy pulse, generated by the Jupiter electronics, travels the length of the magnetostrictive wire. A return signal is generated from the precise location where the magnetic field of a float intersects the wire. A timer precisely measures the elapsed time between the generation of the pulse, and the return of the acoustic signal.
Features:
Precision level measurement ±0.015" (.381 mm)
Lengths to 400 inches (1016 cm)
Maximum process temperature:
Direct Insertion +500° F (260° C)
External Mount +850° F (+455° C)
Supports FDT/DTM standard, PACTware™ PC software
Applications:
Boilers (with magnetic level indicators)
Surge Tanks
Gas Chillers
Biotherapuetics
Pharmaceuticals
Process Vessels
Options:
Foundation fieldbus™ digital ouput
Hastelloy® or Monel® materials of construction
Threaded, flanged process connections or externally mounted
Interface measurement
SIL 2 compliant models
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Magnetostrictive level sensors take advantage of the magnetostrictive technology for measuring product level, interface and temperature variations using to the float principle.
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Measuring length 300-4000 mm
Connection G 2, 2" NPT AG
Material st. st.
Max. pressure PN 10, Max. temperature: 70 °C
Accuracy +/- 1 mm
output 4-20 mA
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Level sensors: float level sensors, hydrostatic level sensors
