Krohne DKR46 Variable Area Flow Meter /2015 KROHNE china supplier

Krohne DKR46 Variable Area Flow Meter

Installation

 1.1 Installation in the pipeline

· The variable-area flowmeter must be installed vertically (float measuring principle), with flow from bottom to top.

· Before installing the flowmeter, blow or flush out the pipeline leading to the flowmeter.

· Use connectors appropriate to the flowmeter version. Align the pipes axially with the bolt holes on the flowmeter without incurring stresses. If necessary, support the pipeline on both sides of the flowmeter to prevent vibration from being transferred to the flowmeter.

1.2 Panel mounting

· Prepare the panel recess as shown in the drawing (see Dimensions and Weights, Section 9).

· To install in the panel, slacken the two screws (1) on the faceplate of the flowmeter, insert the device from the front into the recess, align and fasten with the two screws (1).

Strart-up

· The actual system operating pressure and process temperature must not exceed the maximum values specified in the order.

 · Ensure materials are compatible with the process product. Close needle valve at flowmeter.

 · Open shutt-off valves upstream and downstream of the meter.

 · On liquid service: carefully vent the pipeline. On gas service: increase pressure slowly up to operating pressure. Avoid conditions in which the float can accelerate to the upper stop (risk of glass breakage).

 · Open needle valve and set the required flowrate.

 · The flow value is read off from the top edge of the float.

Limit switches

To signal specific flow values, the miniature flow-meters can be equipped with limit switches that initiate an electrical signal when preset values have been reached. One limit switch is required for each limit value. Suitable limit switches are either mono-stable RC 10-14-N0 (TG 10-1) and RC 15-14-N0 (TG 15-1) or bistable ring sensors RC 10-14-N3 (TG 10-1/bi) and RC 15-14-N3 (TG 15-1/bi). Bistable limit switches identify the direction of movement of the float as it passes through the sensor. Bistable limit switches are supplied with junction box and built-in EMC filter EMV-Y 38132 or EMV-Y 38133. AN EMC filter is not required for monostable limit switches. EMC filters for bistable limit switches are only required in Europe (CE).

Retrofitting/Adjustment of the limit switches

· Remove the measuring glass as described under Section 5 ”Maintenance”.

· Slip the limit switches over the measuring glass. Be sure to mount correctly, flying lead at the bottom.

· After fitting the measuring glass, set the limit switch to the desired flowrate by sliding it along the glass.

· Fasten the limit switch (2) with the two attachment screws (1) to the mount (3) on the flowmeter.

Term & Payment :

1. Payment: T/T in advance or PayPal, Western Union

2. Delivery time : 4-6 weeks working days after receiving payment

3. Shipment: Express (FedEx, DHL, UPS & TNT) or forwarder

4. 7 days  free replace & one year free repair for quality warranty

5. Packing :Standard carton /wooden case with poly foam inside