Ritter Precision Wet-Test Gas Flow Meters
Drum-Type Series: TG


Ritter User Benefits
  • Most durable construction available
  • Use with inert and corrosive gases
  • Highest accuracy
  • Laboratory precision
  • Largest selection of measuring ranges
  • Computer monitoring
  • Real-Time electronic display
  • No maintenance


Applications & User Benefits
RITTER® wet-test (drum-type) gas flow meters are used universally to measure and record gas volume and gas flow rate for many industrial, petroleum and chemical processes; environmental; pilot plant or test; controlled chamber; laboratory and research applications.
RITTER® wet-test meters consistently provide the highest accuracy and precision even at the lowest gas flows with inert or the most aggressive gases.

Measurement Principle
RITTER® wet-test gas meters function upon the principle of positive displacement. The sample gas stream rotates a measuring drum within a packing fluid, usually water or low viscous "white" (clear) oil. A needle-dial and counting mechanism, coupled to the rotating drum, records the volume of gas flow as it sequentially fills and empties from the drum's rigid, fixed volume measuring chambers.		 Accuracy
±0.20% or better.

Measuring Ranges
RITTER® wet-test gas meters offer seven (7) standard measuring ranges from as low as one (1) l/hr up to 18,000 l/hr.

Standard Type (1) Flow Rate Readout Indication
Min
(1/hr)		 Std
(1/hr)		 Max
(1/hr)		 Min (2)
(liters)		 Max
(liters)
TG 05 1 50 60 0.002 9,999,999.9
TG 1 2 100 120 0.01 99,999,999.0
TG 3 5 300 360 0.02 99,999,999.0
TG 5 10 500 600 0.02 99,999,999.0
TG 10 20 1,000 1,200 0.10 99,999,999.0
TG 20 40 2,000 2,400 0.20 999,999,999.0
TG 50 200 10,000 18,000 0.50 999,999,999.0

(1) custom meters to 10 bar pressure (and/or) 20,000 l/hr available
(2) smallest readout (sensitivity)


Models & Materials of Construction
RITTER® wet-test gas meters are built to deliver superior performance with the same unbeatable results in both the most aggressive industrial applications or under laboratory test conditions.

Model Casing Measuring Drum Maximum Constant Use Temperature
°C °F
1 1.4571 PVC-grey 40 104
3 1.4571 PP-grey 70 158
4 1.4571 PVDF 120 248
5 PVC-transparent PVC-grey 40 104
6 PP-grey PP-grey 70 158
7 PVDF PVDF 120 248

PVC=Polyvinylchloride PP=Polypropylene
PVDF=Polyvinylide Fluoride 1.4571=Stainless Steel

Specifications

Type: TG 05 TG 1 TG 3 TG 5 TG 10 TG 20 TG 50
Gas-Inlet Pressure (mbar)
Minimum 1.0 0.4 0.4 1.0 1.0 1.0 1.0
Maximum 50 50 50 50 50 50 50
*Weight (lb) (approximate; without packing fluid):
Model 1 8 9 13 13 22 33 43
Model 3 8 8 13 13 22 32 42
Model 4 9 14 14 23 35 46 -
Model 5 8 9 13 15 23 39 70
Model 6 6 6 9 10 17 29 50
Model 7 11 11 17 20 30 51 90
Dimensions (approximate):
Height 11" 11" 14" 14" 17" 21" 25"
Width 9" 9" 12" 12" 15" 19" 23"
Length 12" 12" 15" 16" 18" 20" 24"

Measurement Standard
RITTER® wet-test meters measure the actual volume of gas flow. Norm volume, if required, must be calculated using the actual RITTER ® measurement of gas flow, while correcting for current gas pressure and gas temperature.

Maintenance
None

Standard Equipment
  • Multi-chamber rotary measuring drum with counting mechanism
  • Single, large needle-dial readout
  • 8-digit accumulating counter
  • Liquid-level indicator for packing fluid
  • Manometer & thermometer supports
  • Bubble level with adjustable feet
Options Available
  • Thermometer (gas)
  • Thermometer (packing fluid)
  • Manometer
  • High-Precision liquid-level indicator
  • Resettable (5-digit) roller counting mechanism
    (not available for Model TG 05)
  • Adding needle counter
  • Pulse Generator (PG)
  • Ex-proof PG inductive sensor
  • Real-time Electronic Digital Display (EDU 32) with RS-232 connection
  • Electronic port for recorder, PC or other communications interface
  • Custom meter ranges
  • Custom high pressure meters
  • Full scale factory calibration curve
Pulse Generator
Application
The RITTER® Pulse Generator, a wet-test gas meter accessory, is a rotary encoder with pulsed electronic output. It transfers recorded data: (a) volume (liters) of measured gas; and (b) gas flow rate (liters/hr) to an external recording or data processing link such as a chart recorder or PC interface for remote or unattended operation.

Components
Slit disk; photo interrupter; 5-pin socket (round). Power, interfacing hardware (RS-232), and data processing software, if required, must be provided by the user. Real-time, visual readout of flow rate and volume data is available by coupling the programmable EDU 32 (electronic display unit) accessory to the pulse generator.
 Description
A disk with radial slits at its periphery is synchronized to the rotation of a measuring drum immersed in the meter packing fluid. Disk slits rotate through a photo interrupter; first permitting the unobstructed passage of a light beam; and then, momentarily, obstructing the beam. Each completed light transmission cycle is registered as a single electronic pulse.

The photo interrupter thus converts each revolution of the measuring drum into a series and sequence of electronic pulses. The frequency of these pulses indicates the rotational speed of the measuring drum, providing an accurate and precise measurement of gas flow rate. The number of pulses is directly proportional to the actual gas volume passing through the RITTER® wet-test gas flow meter.

Ritter

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Company Info
Tel: 914.741.5700 • Fax: 914.741.5711 • Toll Free: 1-888-779-2064
Email: sales@calibrated.com • 174 Brady Avenue, Hawthorne, NY 10532 USA