WILPO C 732 measurement system

COOPERATING WITH SAMPLE RECEIVERS

Applied measurement methods

The WILPO C 732 system for rapid measurement of coal quality parameters, compatible with sample collectors, is intended for direct measurement of ash and moisture content and for calculating the calorific value of coal in excess, averaged and crushed material, returned to the main belt conveyor after each sample collection by the sample collector.

Construction

The WILPO C 732 measurement system is a virtually maintenance-free device, its measuring station can operate independently or be connected to a reading station. The system can be added to existing sample receivers, or integrated - at the design stage - into the system of a new sample receiver.

Measuring station of the WILPO C732 System, where:

1 – GC15 measuring head
2 – CW2 layer height sensor
3 – ZC14 suspension
4 – ZS2 controller assembly

GC15 measuring head, where

1 – Scintillation probe
2 – Working container with a radiation source
3 – Microwave moisture meter
4 – Flap with electric actuator
5 – Layer height sensor
6 – Measuring head housing

Basic technical data

Coal type:	hard coal
Coal grain size:	issued by the sampler crusher
Measuring chamber capacity:	5 liters [dcm³]
Ash measurement method:	gamma radiation scattering
Gamma radiation source:	Am – 241 – 1 pc. (closed source, special form, activity 3.7 GBq)
Gamma radiation detector:	scintillation probe with NaI (Tl) crystal
Moisture measurement system	microwave reflectance meter
Accuracy of ash measurement: in the range < 25% Ar in the range > 25% Ar	σ = 0,5 do 1,0 % σ = 1,0 do 2,0 %
Moisture content measurement accuracy: in the range < 10% Intr in the range > 10% Intr	σ = 0,5 do 0,7 % σ = 0,7 do 1,0 %
Accuracy of determining the calorific value:	200-600 kJ/kg
Rated supply voltage UN:	230V, 50 Hz