Trend monitor with 4-20mA output

Trend monitor with 4-20mA output for continuous dust measurement

Continuous trend monitor that gives plant operators to see the performance of the filtration systems and ducts over a period of time.  Perfect for installation after any filtration system or in common line channels leading into the emissions points of a plant.

State of the art Inductive Electrification principle minimizes the need for maintenance on the  dust monitor and provides an accurate trend for end users.  4-20mA output combined with an easy to use auto-setup feature that takes less than 30 minutes from installation makes the device both convenient and reliable.

<strong>ATEX Models</strong>


<li>Certified for ATEX Zone 20, 21 or 22</li>

<li>Approved to Category II 1/2 for Gas and Dust</li>

<li>IP65 Enclosure, Custom Designed ● Certification Type: II 1/2 GD EEx ia IIC, T6, IP65, 85°C</li>

<li>Utilizing SINTROL’s Advanced Inductive Electrification Technology</li>


The ATEX directive covers health and safety of workers potentially at risk from exposure to explosive environments. This directive classifies areas into Zone 0, 1, 2 for gas and 20, 21 or 22 for dust and guides plant operators to install the appropriate ATEX certified systems. Products are required to be categorized by the level of protection that they offer against the risk of them becoming a potential source of ignition in an explosive atmosphere. The equipment conformity categories are 1, 2 &amp; 3.

S300 Series dust monitors

Measurement Objects Solid particles in gas flow
Particle Size 0.3 µm or larger
Measurement Range From 0.1 mg/m³
Measurement Principle Inductive Electrification
Protection Category IP65
Probe Length (total/measuring) 500mm/440mm, 750mm/690mm (optional),1000mm/940mm (optional), others on request19.7″ / 17.3″, 29.5″ / 27.2″, 39.4″ / 37.0″ (optional), others on request
Power Supply 115 VAC, 230 VAC or 24 VDC
Power Consumption DC model Max 3 W, AC model Max 8 W
Wiring Connections – Power Supply DIN PG11 cable gland
Wiring Connections – Output Signals DIN PG11 cable gland
Process Connection Socket (38 mm OD), quick clamp (optional), flange (optional)
Output Signals – Two SPDT relays: 5A, 24V AC/DC
Communication Interface Serial Communication RS-485
Range Set Up – Normal measuring range: automatic, based on average measured dust flow during setup procedure
– Extended measuring range: User selectable
Relay Alarm Settings
– Automatic, set at factory: Based on average measured dust flow
– User selectable ranges
Offset Trim Automatic drift compensation
Signal Damping Time 0 – 300 s
Relay Delay Time 0 – 180 s

Process Conditions

Max 300°C, Max 700°C (optional)
Max 572 °F, Max 1292 °F (optional)
Max 200 kPa, Max 600 kPa (optional)
Max 43.5 PSI, Max 87 PSI (optional)
Gas Velocity Min 4m/s  ı  Min 13.1 ft/s
Humidity Max 95% RH (non-condensing)

Ambient Conditions

Temperature -20 to +45°C and to 60°C for 24 VDC-4 to 113 °F and to 140 °F for 24 VDC
Humidity Max 95% RH (non-condensing)
Vibration Max 5 m/s²  ı  Max 16.4 ft/s2


Probe (wetted part) Stainless steel (AISI 316L)
Probe Coating (wetted part) PTFE Teflon (optional)
Process Connection (wetted part) Stainless steel (AISI 316L)
Probe Insulation  (wetted part) PEEK
Probe Sealing (wetted part) FPM Viton
Enclosure Aluminum alloy
Weight 2.3kg  ı  5.1 lbs