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Enraf Tank Temperature Measurement
Brand: Honeywell Process SolutionsHoneywell’s Enraf® temperature gauging systems offer reliability, high measurement accuracy, minimal maintenance cost and easy installation for all types of liquid bulk terminals and storage facilities.
What is It?
Honeywell’s Enraf® Tank Temperature Measurement portfolio ranges from single spot temperature probes to the advanced VITO Multiple Thermosensor Thermometers (MTT) for accurate temperature measurement. If required a water level probe can be integrated measuring the water level accurately at the bottom of the tank.
The VITO interface guarantees faultless communication with level gauges based on radar or servo technology.
Interfacing the tank gauge with the temperature measurement and even water level measurement reduces costs for wiring and installation.
How Does It Work?
Honeywell offers several types of temperature measurement instruments:
Spot Temperature Measurement is performed by probes directly connected to a level gauge and mounted at any desired location in the tank.
Average Temperature Measurement is made possible by the VITO MRT which consists of multiple resistor elements, each with a different length. Depending on the liquid level measured by the level gauge, the longest element which is completely submerged in the liquid is selected to represent the average temperature of the stored product
Multiple Temperature Measurement is performed by the VITO LT which measures average product temperature and average gas temperature with a nine-element probe, while the VITO MTT goes a step further with a 16-element probe.
What Problems Does it Solve?
Honeywell's temperature measurement portfolio exceeds the requirements of all in-tank measurement standards. The top end temperature gauging systems – VITO LT and VITO MTT - are suitable for custody transfer purposes in conformity with weights and measures regulations. In addition, the VITO MTT is fit for LNG storage
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Specifications
Measuring principle
- 4-14 Pt100 temperature elements equidistant spaced between top and bottom element
Product temperature range Standard
- -50º C to +120º C (-58º F to +248º F)
Product temperature range Low
- -200º C to +50º C (-328º F to +122º F)
Product temperature range High
- -50º C to +200º C (-58º F to +392º F)
Product temperature range Very high
- -20º C to +250º C (-4º F to +482º F)
Storage temperature
- -50º C to +120º C (-58º F to +248º F)
Measuring length
- Depending on identification code
Element accuracy
- According EN-IEC 60751: • 1/6 DIN Class B = ± 1/6·(0.30+0.005·|t|) °C • 1/10 DIN Class B = ± 1/10·(0.30+0.005·|t|) °C
Probe accuracy
- • 1/6 DIN Class B = ± (0.15+0.002·|t|) °C • 1/10 DIN Class B = ± (0.12+0.0015·|t|) °C
Measuring resolution
- 0.01º C (0.01º F)
Process material
- AISI 316
Adjusting pipe
- ISO 228/1-G1/2B (1/2 BSP), adjustable length 255 mm (10”)
Maximum outside diameter
- 28.6 mm (1.2”)
Mounting flange
- Optional (1/2 BSP threaded mounting hole required)
Anchor weight
- Maximum 9 kg (20 lb)
Operating pressure
- 6 bar / 600 kPa (90 psi) hydrostatic pressure
Safety
- The VITO MPT probe is a passive component and can be considered as simple apparatus when used in Intrinsically Safe circuits in accordance with the following: • EN IEC 60079-11, clause 5.7 • NEC (National Electrical Code) Article 504 (Intrinsically Safe Systems) 504.2 (Definitions) Simple Apparatus
Flying leads
- Color coded stranded wires, PTFE isolated, length: • 35 cm (14”) • 250 cm (98”) • 600 cm (236”)Op