Documents
Three Devices, Multiple Measuring Methods
GTL 
The Entry-Level Device
The GTL entry-level model enables the measurement of the flow time of a predefined quantity of granulate or powder (according to EP), as well as the flow time of a specific sample volume. Thanks to the simple numerical membrane keypad, operating the device is extremely easy. The test results can be shown on the LC display and printed out via a connected printer.
The standard version of the GTL is equipped with a stainless steel funnel (480 ml) and three stainless steel outlet nozzles (10/15/25 mm), which can be replaced by a quick coupling. Additional stainless steel funnels (100/200 ml) and outlet nozzles (6 / 8 / 11.3 mm) are optionally available.
- Flowability measurement by weight (EP method)
- Flowability measurement by volume
GT 
The Mid-Tier
The ERWEKA GT granule flow meter has a special, integrated scale that can measure the weight of samples while testing their flow behavior. The user can measure the flow time of a sample weight, a specific sample volume or the flow time of a weight in a specific time.
The large full graphic LC display and membrane keypad make the device easy to operate. A graph is calculated, displayed and / or printed out for easy comparison (quantity / time).
- Flow measurement by weight (EP method)
- Flowability measurement by volume
- Flowability measurement over a specific time
- Determination of the flow angle with graphical display on the printout
GTB 
The Allrounder
The GTB is the fully equipped all-rounder of the GT family. In addition to the standard measurement of flow properties, it features a method for fully automatic determination of the angle of repose.
For this purpose, the Pfrengle method is applied and a powder or granulate cone is heaped up. The geometry of the cone is optically measured with a class 2 laser and the angle of repose of the sample is displayed as a result. The stirring unit with four speed levels is part of the GTB’s standard equipment.
The device is conveniently controlled via a large LC full graphic display and a membrane keypad. Two certified cones (30° and 40°) can be purchased for the angle of repose measurement. The 45° cone is included as standard.
- Flowability measurement by weight (EP method)
- Measurement of flowability by volume
- Flowability measurement over a certain time
- Determination of the flow angle with graphical representation on the printout
- Measurement of the angle of repose with a laser measuring device
Granulate Flow Tester GT Series Technical Data
| Weight | 25 kg |
| Dimensions (H x W x D) | 730 x 430 x 400 mm |
| Voltage | 100 – 240 V / 50 – 60 Hz |
| Interfaces | RS232C and USB |
| Control | Alphanumeric membrane keypad with LC display (GT/GTB) Membrane keypad with LC display (GTL) |
| Outlet nozzle | 10 / 15 / 25 mm (Optional: 6 / 8 / 11.3 mm) |
| Funnel | 480 ml (Optional: 100 / 200 ml) |
| Precision scale | Mettler Toledo RPA 455 (GT/GTB only) |
| Maximum load | 7000 g (GT/GTB only) |
| Readability | 0.1 g (GT/GTB only) |
| Optical measurement | Laser Class 2, EN 60825-1:1994 (GTB only) |
| Laser measurement | ± 1° (GTB only) |
