Series PMT2Particulate Transmitter

T h e ma t e r i a l s i n c l u d e d i n t h i s c o mp i l a t i o n a r e f o r t h e u s e o f D w y e r I n s t r u me n t s , I n c . p o t e n t i a l c u s t o me r s

a n d c u r r e n t e mp l o y e e s a s a r e s o u r c e o n l y . T h e y ma y n o t b e r e p r o d u c e d , p u b l i s h e d , o r t r a n s mi t t e d e l e c t r o n i c a l l y f o r c o mme r c i a l p u r p o s e s . F u r t h e r mo r e , t h e C o mp a n y ’ s n a me , l i k e n e s s , p r o d u c t n a me s , a n d l o g o s , i n c l u d e d w i t h i n t h e s e c o mp i l a t i o n s ma y n o t b e u s e d w i t h o u t s p e c i fi c , w r i t t e n p r i o r p e r mi s s i o n f r o m

D w y e r I n s t r u me n t s , I n c . ©C o p y r i g h t 2 0 1 6 D w y e r I n s t r u me n t s , I n c .

The Series PMT2 is a transmitting device that senses the current generated by particles as they pass by the sensing probe. The current level is correlated to the amount of particles in the air stream, and thus the PMT2 output (4-20mA loop signal) can provide a representation of the particulate in the duct.

PMT2 Product Overview

*Featured with Series 2600 Process Controller

Process Markets• Multiple Segments• Primary use: Where process

media/dust collection, pneumatic conveying, or any other filtration process requires a signal to help indicate when the filtration media may have failed

Applications:• Emission Monitoring• Bag Leak Detection• Dust Collector Maintenance• Product Loss Prevention• Equipment Protection

Value Proposition• Limit plant downtime for filter repair• Protect equipment downstream of the

filter that could be damaged by excess dust

• Prevent product loss in cases where the process media is collected to be reused in the facility

• Insure good community standing and avoid fines incurred from excess dust emissions

PMT2 Markets & Value

• Standard models are intrinsically safe (UL) when wired in accordance with control diagrams, otherwise all models meet NEMA 4X (IP 66) enclosure ratings.

• UL explosion-proof, and ATEX/IECEx approvals options are pending.

• Simple 2-wire installation for PLC and control panels, no need for proprietary cabling, or expensive control monitors.

• Field output scale selections including logarithmic output scales to offer high resolution at low readings, but a wide span to make sure system can be monitored accurately.

• Scale range suggestion list in IOM.• When combined with Series 2600, provides an

open protocol, standalone monitoring solution for bag leak detection.

PMT2 Features & Benefits

• There will be an increase in output signal from the PMT2 after each pulse in the bag filter cleaning process

• Monitoring the amplitude of the spike can give the user early indication of a filter that is wearing out or broken

• If the pulses are far enough apart, monitoring the pulse timer at the same time can help identify exactly which bag failed

Broken Bag/Bag Leak Detection

PMT2 Applications

In the example data above, the PMT2 reading is significantly higher after the pulse of Filter 1, indicating there may be an issue. Filter 3 is also showing a potential wear.

Note: The red threshold line is determined by the user. After the collection system is installed, the user should run the system and monitor the PMT2 output, noting the peaks after each filter pulse. The threshold should be set 3-5 times the normal peak output determined during that initial evaluation.

• Identifying when filters are failing or have failed is more then just an emissions concern– Cement Plants: Filtration systems are

utilized throughout cement facilities. Monitoring the filter performance with a particulate transmitter not only limits down time in the event of a bag failure by helping the serviceman quickly identify the failure or potential failure location, it also limits the loss of limestone or other raw materials essential to the process.

PMT2 ApplicationsProduct Loss Prevention

*Featured with Series 2600 Process Controller

• Identifying when there is an increase in the dust concentration after a filtration process also helps to protect workers in a plant.– Welding Plant: Filtration systems are used

to clean the air pulled from welding or grinding processes through vacuum or downdraft equipment. After passing through the filters, the air is then sent back into the plant to limit the costs of conditioning the air in the facility. Monitoring the filter performance can help protect the workers in that plant, by sensing when a potentially unsafe high particulate condition occurs allowing for an tech, or automated system to exhaust that air outside of the facility.

PMT2 ApplicationsAir Quality

*Featured with Series 2600 Process Controller

• Identifying when there is an increase in the dust concentration after a filtration process also helps to protect equipment downstream of the filter system.– Blowers and other equipment can be

located on the clean air side of a filtration system. Monitoring the filter performance can help protect that equipment by sensing when a high particulate condition occurs allowing for a tech, or automated system to shut down the process, limiting the amount of material that can get into that equipment and eventually cause bearing or seals to fail.

PMT2 ApplicationsEquipment Protection

*Featured with Series 2600 Process Controller

• The Series 2600 Process Controller is a versatile companion product to the Series PMT2 – Particulate Monitoring Sensor– The Series 2600 is available with one or

two switch, SSR, or PID control outputs, allowing users to establish alarm and control setpoints, based on feedback from the Series PMT2.

– NEMA 4X enclosures available on request

Process ControllerSeries 2600

• If trending or data-logging is required, the Series 2600 is available with Modbus® RS-232 or 485 Serial Communications output, which interfaces seamlessly with Dwyer’s Lovelink™ Software. – Lovelink™ software must be installed on a

PC and communicates to the 2600 through RS-232/485 serial bus

• The Series 2600 Process Controller also has an optional retransmission of the process variable, which can be used as input to a data logger or data acquisition system

Trending & Data LoggingSeries 2600 and Data Acquisition

PMT2 Specifications

MODEL CHARTExample PMT2- 05- A- U2 PMT2-05-A-U1Series PMT2 Particulate Transmitter

Probe Length

351015203036

3˝ Probe Length5˝ Probe Length10˝ Probe Length15˝ Probe Length20˝ Probe Length30˝ Probe Length36˝ Probe Length

Process Connection

AB

3/4˝ MNPT1.5˝ Tri-Clamp

Enclosure Rating U2 NEMA 4X, UL (IS)Options ST Stainless Steel Tag

SPECIFICATIONS

Service: Air and compatible gases, any type of particulate conductive or non-conductive.

Wetted Materials: 316L SS and PTFE.Enclosure: Powder coated aluminum.Accuracy: ±5% of reading.

Particulate Size: 0.3 microns and higher.Detection Range: 5 to 5000 pA (6 selectable range options).

Temperature Limits: Ambient: -40° to 140°F (-40° to 60°C)Process: -40° to 248°F (-40° to 120°C)

Pressure Limit: 30 psi (2.11 kg/cm2).Output Signal: 4 to 20 mA.

Air Velocity: 300 ft/min (1.52 m/s).Power Requirements: 9.5 to 28 VDC .Electrical Connection: Two 1/2˝ female NPT conduit openings.

Terminal Block: Removable (14 to 24 AWG wire).Process Connection: See model chart.

Probe Lengths: See model chart.Enclosure Rating: NEMA 4X (IP66).

Mounting Orientation: Any.Averaging Time: 1 to 360 s (10 selectable options).

Weight: Varies with length of probe and type of mount.Agency Approvals: CE, cULus; ATEX/IECEX pending

Helpful Links:Product Website Introductory Video Data SheetInstruction Manual Dimensional Drawings

Contact Information:T: +1 800.872.9141F: +1 219.872.9057Orders: orders@dwyer-inst.com Technical Support: tech@dwyer-inst.com

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