Continous dust monitor for post-ESP applications

sintrol e spy

Continous dust monitor for post-ESP applications

As the only probe based dust monitor proven to be a reliable trend monitor after electrostatic precipitators (ESP), the Sintrol ESPY is one of its kind.  With the ability to neutralize the electrostatic field in the outlet duct of an ESP, the ESPY is able to give a trend of relative dust concentrations to help plant operators optimize the use of the ESPs.

ATEX Models

  • Certified for ATEX Zone 20, 21 or 22
  • Approved to Category II 1/2 for Gas and Dust
  • IP65 Enclosure, Custom Designed ● Certification Type: II 1/2 GD EEx ia IIC, T6, IP65, 85°C
  • Utilizing SINTROL’s Advanced Inductive Electrification Technology

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 & 3.


Measurement ObjectsSolid particles in gas flow
Particle Size0.3 µm or larger
Measurement RangeFrom 0.1 mg/m³
Measurement PrincipleInductive Electrification
Protection CategoryIP65
Probe Length (total/measuring)500mm/440mm, 1000mm/940mm, 1500 mm/1440mm19.7″ / 17.3″, 39.4″ / 37.0″, 59.1″ / 56.7″
Power Supply115 VAC, 230 VAC or 24 VDC
Power ConsumptionDC model Max 3 W, AC model Max 8 W
Wiring Connections – Power SupplyDIN PG11 cable gland
Wiring Connections – Output SignalsDIN PG11 cable gland
Process connectionFlange (DN80), other flange types on request
Output Signals– Isolated 4 – 20 mA
– Two SPDT relays: 5 A, 24 V AC/DC
Communication InterfaceSerial 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 TrimAutomatic drift compensation
Signal Damping Time (mA)0 – 300 s

Process Conditions

TemperatureMax 250°C, Max >250°C on request  ı  Max 482 °F, Max >482 °F on request
PressureMax 300kPa, Max 600kPa (optional)  ı  Max 43.5 PSI, Max 87.0 PSI (optional)
Gas VelocityMin 4 m/s  ı  Min 13.1 ft/s
HumidityMax 95% RH (non-condensing)

Ambient Conditions

Temperature-20 to +45°C and 60°C for 24 VDC  ı  -4 to +113 °F and 140 °F for 24 VDC
HumidityMax 95% RH (non-condensing)
VibrationMax 5m/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)
Faraday Cage (wetted part)Stainless steel (AISI 316L)
Probe Insulation (wetted part)PEEK
Probe Sealing (wetted part)FPM Viton
EnclosureAluminum alloy
Weight6.8kg  ı  15.0 lbs