Special requirements (indicated by the abbreviation SB) – DIN flanges on the size of meter (a standard they are manufactured only with a threaded connection). Adder, according to customer requirements – adder FRT12 flow in the body DIN. Example 2: Objective: To organize the receipt with the flow diesel fuel (DF) with a tank truck MAZ ATZ -56142-08 (11m3, equipped with a pump 1SVN-80A (capacity up to 500l/min.) Temperature -20 +40 C. It should be the receiving of the control flow of the Recipient to transfer data via the GPS-monitoring on the control panel, the accuracy is not worse than 0,5%, process connection – compression fitting. Solution: Since no need for a recording device (an adder) and reading on the spot (ie, meter must operate in a "black box"), it suffices to execution flow with pulse output and connecting it to the GPS-monitoring system. In such a system installer was chosen base set of "Autograph".
1. Choose the flow meter. This can be OM50E, flow in the oval gears (with an extended range of 35-580 l / min.) Or TP150 – Turbine (55-550 l / min). Maximum flow 500 l / min is about 86% of maximum flow meter on the passport on the oval gears. Since the work at such short-lived flows – only at the sink (about 20 min.), This performance is not a limiting factor. Flowmeters DP series tend to have inferior accuracy, and a series of MR flow measurements do not provide a specified range of flows. 2. The accuracy for the OM050 – better than 0,5%, for the turbine – better than 0,5% (for the ratio of maximum: minimum Feed no more than 10:1.) 3.
The viscosity of diesel fuel in the temperature range of about 3-8 cSt, which does not require adjustment range and allows for both types of flow meters. 4. Diesel toplmvo compatible with aluminum. Thus, for flow in the oval gears acceptable performance of aluminum components, which significantly reduces the cost of the meter. 5. The temperature of the liquid does not require additional options. 6. System pressure less than the maximum allowed for both types of flow meters. 7. The ambient temperature is in the acceptable range. 8. Threaded connection – base for both types of flow meters. 9, 10. There is no need for an adder, but long service meter must connect it through the converter 24/12 VDC 1.5A for example, OTP -01 or MO-12-1, 5 Company "Bastion". Additional factors: For the turbine requires normalization of the flow is straight sections of 10D (150 cm) to the meter and at least 5D (75 cm) after. This condition makes the use of turbine flowmeters problematic with limited space. Also, the use of turbine flowmeters do not exclude the possibility of discharge of fuel through it when latched turbine. Flowmeters for oval gears are made with minimal clearances and leakage, even if jamming gear is practically nonexistent. Using above methodology and a detailed price list, any buyer will be able to determine the basic parameters of the model and the cost of the necessary flow meter liquid.