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- Casing and Measuring Drum out of superior plastics
- Measuring Drum is welded
- Magnetic Coupling instead of O-ring for drum axis
RITTER drum gas meters can be used universally for measuring the volume of flowing gases, especially for small and medium flow rates, e.g. in laboratories, where the highest level of precision is required. Highest measuring accuracy of ±0.5% over the entire measuring range.
The possibility of selecting the gas meter material from among 5 different excellent materials: Polyvinyl Chloride (PVC), Polypropylene (PP), Polyvinylide Fluoride (PVDF), PE-el (polyethylene electrically conductive) or refined stainless steel 1.4571 (316 Ti) enables the user individually to meet measurement requirements even in case of highly aggressive gases.
User Benefits
- Highest accuracy: ±0,5% across full flow rate range
- Calibration traceable to the German National Primary Standard (PTB)
- Measurement of all gases and gas mixtures with equal accuracy
- Use with extremely corrosive and inert gases.
- Lowest measurable flow rates
- Largest selection of measuring ranges
- Real time data acquisition option for PC (requires option »Pulse Generator«)
- Most durable construction – available, both chemically (from high-quality thermoplastics) and mechanically (stainless steel)
- Maintenance-free (just checking of packing liquid level required)
Standard Equipment
- Multi-Chamber Measuring Drum
- Magnetic coupling between measuring drum and counter (for an absolutely liquid-tight casing)
- 8 or 9-digit Totalizing Roller Counter
- Large One-needle Dial
- Supports for Thermometer and Manometer
- Viton sealing
- Level and Levelling Feet
- Bubble level for levelling
Performance Specifications
| Type | Flow Rate Minimum (ltr/h) | Flow Rate Maximum (ltr/h) | Flow Rate Standard (ltr/h) (1) | Readout Indication Minimum (ltr) (2) | Readout Indication Maximum (ltr) | Measuring Drum Volume (ltr) | Pressure Loss Minimum (mbar)` |
| TG 0.5 | 1 | 60 | 50 | 0.002 | 9,999,999.9 | 0.5 | 0.4 |
| TG 1 | 2 | 120 | 100 | 0.01 | 99,999,999 | 1.0 | 0.2 |
| TG 3 | 6 | 360 | 300 | 0.02 | 99,999,999 | 3.0 | 0.2 |
| TG 5 | 10 | 600 | 500 | 0.02 | 99,999,999 | 5.0 | 0.2 |
| TG 10 | 20 | 1,200 | 1,000 | 0.1 | 99,999,999 | 10.0 | 0.1 |
| TG 20 | 40 | 4,000 | 3,200 | 0.2 | 999,999,990 | 20.0 | 0.1 |
| TG 25 | 50 | 7,000 | 5,000 | 0.1 | 999,999,990 | 25.0 | 0.1 |
| TG 50 | 100 | 18,000 | 10,000 | 0.5 | 999,999,990 | 50.0 | 0.1 |
(1) The calibration is performed at standard flow and 20 °C (68 °F)
(2) Minimum dial division
The maximum gas inlet overpressure is dependent on the gas meter type and casing material:
- With plastic casings TG05 – TG5: Standard version 50 mbar
- With plastic casings TG10 – TG50: 50 mbar
- With stainless steel casings: 0.5 to 40 bar
Measuring accuracy: ± 0.2% at standard flow rate (exact value is stated in individual Calibration Certificate) and approx. ± 0.5% across the entire measuring range.
Available Models (Materials)
| Material Number | Casing Material | Measuring Drum Material | Legend | ||
| 01 | Stainless steel | PVC-grey | PE-el | = | Polyethylene-electrically conductive |
| 02 | Stainless steel | PE-el | PP | = | Polypropylene |
| 03 | Stainless steel | PP-grey | PVC | = | Polyvinyl chloride |
| 04 | Stainless steel | PVDF | PVDF | = | Polyvinylidene fluoride |
| 05 | PVC-transparent | PVC-grey | Stainless steel | = | 1.4571 |
| 06 | PP-grey | PP-grey | Viton | = | Fluorine rubber |
| 07 | PVDF | PVDF | |||
| 08 | PE-el | PE-el | |||
| 01 | Stainless steel | PVC-grey |
Equipment
- 8-digit Totalizing Roller Counter
- Bubble level for levelling
- Level and Levelling Feet
- Magnetic coupling between measuring drum and counter: Casing absolutely liquid-tight, for an absolutely liquid-tight casing
- Multi-Chamber Measuring Drum
- Supports for Thermometer and Manometer
- Viton sealing
Specs
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Product Specification
RITTER drum gas meters can be used universally for measuring the volume of flowing gases, especially for small and medium flow rates, e.g. in laboratories, where the highest level of precision is required. Highest measuring accuracy of ±0.5% over the entire measuring range.
Specification Detail of the DRUM-TYPE GAS METERS
Sizes
¼” to 1″
Flow Range
0.01 ml/h to 18 000 l/h (Air @ Patm & 20°C)
Accuracy
0.2% of rate
Max Pressure &Temperature
50 mBar and 120°C
Rangeability
50:1
Applicable Gases
TG Plastic (≤500mbar) Plastic
TG 0.5 Plastic
TG 1 Plastic
TG 3 Plastic
TG 5 Plastic
TG 10 Plastic
TG 20 Plastic
TG 25 Plastic
TG 50 Plastic
TG Stainless steel (>1bar)
TG 0.5 Stainless steel 6 bar
TG 1 Stainless steel 6 bar
TG 1 Stainless steel 10 bar
TG 1 Stainless steel 16 bar
TG 1 Stainless steel 35 bar
TG 3 Stainless steel 6 bar
TG 3 Stainless steel 10 bar
TG 5 Stainless steel 6 bar
TG 10 Stainless steel 6 bar
TG 20 Stainless steel 6 bar
TG 25 Stainless steel 6 bar
TG 25 Stainless steel 10 bar
TG 50 Stainless steel 6 bar


