Sample Probe Accessories
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filters, backflush,
Due to its modular design and various options, the Ankersmid heated sample probe filters cover the widest range of applications.
With a choice of 3 different lengths of heated filter body, a filter element of 150 mm length, suitable for most applications up to 1 g dust/m³ can be integrated. 250 mm filters are used for applications up to 4 g dust/m³; with the optional blow-back function dust loads of up to 10 g /m³ can be handled.
The 500mm model filter has a capacity for dust up to 10 g/m³
When this type is equipped with blow-back option, it handles up to 20 g/m³. For even higher dust loads, a primary filter is positioned on top of the first filter.
The big advantage is that both filters are replaceable without dismounting the probe. The benefit is that all filters can therefore be replaced with a minimum of tools and in the shortest possible time.
The cleaning of the sample tube or the preliminary filter can be effected by extracting the filter from the probe.
The probe temperature is controlled by a microprocessor based PID controller. Alarm or fault contacts can be programmed and the temperature can be changed only by user-code. The standard sensor is PT100, Fe-CuNi is standard for the high temperature version.
We offer the option of 2-way Modbus/ RS485 communication that combines all Ankersmid controllers, so that digital communication with the control room is possible.
The following features are offered in all 3 lengths of probes:
• Calibration gas can be injected into the probe through a check valve directly to the sample outlet. No calibration gas is lost into the stack.
• An isolation valve with pneumatic control shuts off the sample outlet from the internal filter area in case of blow-back.
• Through a high flow back-flush inlet we can clean the filter and the inlet sample tube so less maintenance is necessary in high dust load applications. This inlet can be controlled by a pneumatic or electric valve, and also in combination with a volume chamber for high pressure flow.