MIDAS® Sensor

Using the same acoustic emissions (AE) leak detection technology as Score’s portable valve leak detection tool, the MIDAS Meter®, the MIDAS® Sensor is designed for permanent but non-intrusive installation to provide continuous on-line valve condition and performance monitoring in hazardous areas where intrinsically safe certified equipment is required.

The MIDAS® Sensor detects the early onset of leakage so aiding operations to identify, trend and quantify valve leakage and enabling the appropriate operational and remedial actions to be put in place. This intrinsically safe valve condition and performance monitoring solution takes you from reactive to proactive maintenance by engaging in condition based monitoring and predictive maintenance activities. MIDAS® Sensor valve leak detection equipment therefore helps pinpoint losses and focus maintenance budget expenditure and actions on valves where maximum benefits can be achieved.

Benefits

Uses

Specifications

The MIDAS^® Sensor design integrates the piezo-electric sensors, filters, amplifiers and processors into a single self-contained housing that is easily mounted on all shapes and sizes of valves and piping. The specification and continuous integrity of the interface between an AE sensor and its mounting surface is critical to the long term reliability and stability of the sensor output. The MIDAS^® Sensor design incorporates unique features to assure the long term reliability of its performance.

1. Cable terminations accessible via sealed cap

2. Bellows to provide sensor interface load

3. Piezo-electric AE Sensor

4. Saddle for mounting to valve or pipe

5. IP66 rated 316 stainless steel enclosure

6. Unique latch mechanism for ease of removal of sensor for calibration or maintenance

7. M20 cable entry

Mechanical

Dimensions - 128mm overall diameter x 130mm height
Housing Material - 316L SS and ABS Lid
Weight - 3 kg
Fixing Method - 316L SS saddle arrangement
Cable Entry - M20 Gland entry

Electrical

Power Consumption (normal operation) - approx. 2W
Output Configurations - 4-20 mA sink or source modes
Output Signal - 4-20mA corresponding to 0-100 dB AE (see note 1 on Approvals page)
Power Supply - 10-12.4 VDC Power Circuit (see note 2), 12-30VDC Signal Circuit in Sink Mode (see note 3 on Approvals page)
Safety Barriers - Required if used in hazardous locations (see notes on Approvals page)
Cabling - 2 Pair 0.75mm2 (see note 4 on Approvals page)
Cable Gland - M20, IP66 (Exe rated gland required for hazardous areas)
Other - Status LED

Environmental

Ingress Protection (IP) - IP66
Ambient Temperature Range(s) - T4 (-25°C to +40°C) or T3 (-25°C to +85°C)
Storage Temperature - 0°C to +50°C
Ambient Pressure Range - 0.8 bara to 1.1 bara

Performance

Principle of Operation - Piezo-electric sensor, filter modules and DSP electronics
Minimum Detectable Leakage - 0.1 litres/min, dP > 5 barg (see note 5 on Approvals page)
Accuracy/Tolerance - ±2 dB of full scale
Process Fluids - Liquid/Gas/Steam
High or Low Temperature Applications - Selection of waveguides available

Accessories

Software

FAQ's

What valve sizes can MIDAS® Sensor be used on?

Which valve types are suitable for monitoring with the MIDAS® Sensor?

Where can I find more information on MIDAS® Sensor Technical Specifications?

How user friendly is the MIDAS® Sensor?

What is the traffic light system in the management software?

Should the MIDAS® Sensor be used as a single source to prove an isolation of a valve?

Are there any examples of where MIDAS® Sensor added specific value for customers?

What are the effects of different fluid types?

What if I have a multiphase fluid?

What conditions are required for the MIDAS® Sensor to detect leakage?

Can the MIDAS® Sensor be used in inherently noisy environments?

Can MIDAS® Sensor be incorporated into existing supervisory control and data acquisition (SCADA) and Site Automation System (SAS) Systems?

Is there a wireless version of MIDAS® Sensor available?