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Enraf introduced the automatic servo level gauging technology in the mid-fifties. Soon thereafter, we introduced the first automatic level gauge for bulk liquid storage tanks was be certified by leading Weights & Measures authorities.
The latest version is the unique Advanced Tank Gauge with only a few moving parts. The ATG and XTG series microprocessor-controlled servo gauges are compact and need only a 2" mounting flange.
The Enraf Servo gauge provides optimal measuring performance in any application, and can easily be integrated with existing SmartRadar, hydrostatic, or hybrid gauging installations.
Innovative ideas are geared towards user satisfaction. After more than 45 years, Enraf is still the driving force in tank gauging.
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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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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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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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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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BinMaster’s SmartBob2 weight and cable inventory management system is designed for powder and bulk solids measurement in bins and storage silos up to 180 feet tall. Consisting of SmartBob sensors, control consoles and Windows-based eBob reporting software, BinMaster provides an automated wired or wireless inventory monitoring and reporting solution for the grain, seed, feed, cement, coal, aggregates, food, chemical, pharmaceutical and plastics industries. SmartBob is ideal for any location where ongoing inventory management and remote reporting is required for just one bin or a network of up to 120 small and large bins.
Measurement devices include the SmartBob2 remote for bins or silos up to 180 feet tall including a high temperature model to operate in extreme conditions from 240 to 500 degrees Fahrenheit, plus the SmartBob-TS1 for smaller bins up to 40 feet tall. SmartBob2 can be uniquely configured using a variety of probe designs and extensions for solid, slurry, and liquid applications. Long-lasting, hassle-free service is ensured by SmartBob’s unsurpassed cable cleaning system.
SmartBob2 is extremely rugged, featuring the industry’s strongest cable and motor design which is completely sealed in a strong, lightweight molded polycarbonate enclosure which is explosion proof and rated for Class II, Groups E, F & G certifications. Requiring no field calibration, SmartBob2 is easy to install, needs minimal wiring, or can be used with the SmartBob wireless transceiver. SmartBob2 provides enhanced surge / transient protection for the RS-485 port for protection against power surges or indirect lightning strikes on tall silos.
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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 Monitoring
Level Measurement
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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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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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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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The Barksdale Tank Level Indicating Systems are sensors for remote indication level of liquid media. They operate according to the float principle with magnetic trans-mission (Permanent magnet, Reed switch and resistor chain). The liquid level is indicated on indicating instruments connected to the sensor.
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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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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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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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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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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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RTX 1930 Series Remote Rangeable Level Sensor
The RTX 1930 Series, through the use of digital correction techniques and a serial configuration interface, offers a 4-20mA sensor with unparalleled accuracy, flexibility and reliability to the customer.
The fully welded construction of the RTX 1930 sensor, which contains no O-rings and incorporates all the enhanced features of a GE Druck family of level sensors developed over 25 years of application use, provides an ideal long-term solution for a reliable, accurate and economical level measurement.
Features & Benefits:
Ranges from 0.6 mH2O to 700 mH2O
Accuracy 0.06%
Fully welded 316 stainless construction
4:1 Downranging
4 to 20 mA output
Full range of installation accessories
Register for free CD-Rom
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KONTINUIELICHE LEVEL MEASUREMENT
- capacitive level probes for liquids and bulks in
High-grade steel or plastic one, exit 4-20mA, for vertical installation, for
aggressive media, remarks with removable head and
exchangeable or shortenable probe staff
- Niveausonden with float principle, for liquids, exit 4-20mA
or resistance signal, Kundensprezifi remarks, in high-grade steel
or plastic ones
Level border conditions: Capacitive contactors,
optical contactors,
Float switch
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WEKA tank level indicators are suitable not only for general liquid level measuring applications, but are also a cost-effective means of detecting interface levels between dissimilar liquids. These sensors are unaffected by temperature and pressure, and provide a stable and linear signal output, even with the existence of liquid agitation or the presence of a foam layer. Their ruggedness meets the requirements of the toughest operating conditions, including military applications. They are available in different configurations to so that an optimum solution can be offered for any level measuring range. With only one moving part, these sensors are simple, reliable, virtually maintenance-free, and easy to service, if such a need arises. WEKA has unique capabilities in precision fabrication of stainless steel and other specialized corrosion-resistant metals. This, together with our large selection of float designs, allows us to offer level measuring solutions precisely tailored to your needs.
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