Flow Rate Indicators NJV
NJV Flow rate indicators allow a quantitative visualisation of delivery, especially for uses with high work pressures, and, where it is necessary, controlling nontransparent fluids and/or with high viscosity. A magnetic piston is pushed by the circulating fluid against an antagonistic spring, moving therefore a magnetically coupled indicator outside the flow chamber. Such indicator runs within a graduated scale allowing to quantify the delivery volume. The instruments are provided with a viscosity compensation system up to 200 cst. They can also be optionally provided with an electrical alarm contact that may be set within the measurement range. Moreover, a front pilot light indicates the status of the electrical contact. NJV with electrical contact NJW400
Use / Characteristics
 
- Functioning independent from assembling position.
- High working pressure.
- Reading scale not in contact with fluid.
- No risk of breaking.
- Possibility to install an adjustable alarm contact.
- Viscosity compensation.
 
These instruments are mainly used to control the lubricating circuits of reduction gears, machine tools and paper making machines.