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Bottom Loading Oil Controller, Overfill Detection For Oil, Bottom Loading Grounding Controller

1    System introduction

ET - SLC-B overfill detection-bottom  loading and grounding controller is designed for  bottom loading oil system , can effectively prevent liquid overflow and ensure the  grounding resistance conforms to the safety standards of instrumentation, system for oil storage and transportation of chemical products.

Ex-mark is Exd[ia]IIBT4.

2  Working principle and System composition

2.1 Working principle

ET - SLC-B overfill detection-bottom  loading and grounding controller 

is designed for the bottom  loading oil  system .  when the liquid level exceeds alarm position or ground loop in excess of the prescribed value, the system output sound and light alarm signal for field personnel understand the system working status in time, at the same time the output relay switch control signal.

3 the product characteristics

1. The system USES digital circuit design, stable performance, strong anti-interference ability;

2. To connect 8 overfill sensor of  meeting API Rp1004  and 1 grounding bolt;

3. Compatible with foreign Scully, Civacon, Liquip, Dixon brands such as overfill sensor;

4. Plug meet  API rp1004 standard design, compatible with socket of meet API  Rp1004

5.Ensure grouding resistance < 55 Ω

6.Provide sound and light alarm signal, in a timely manner to understand system working state

7.Switch signal output interface capacity 10A, 30 VDC or 10 A, 250 VAC.

4   System parameters

1. Working voltage: 220 VAC ± 10%

2. The working current: < 20 mA

3. The working temperature: - 40 ℃ ~ 60 ℃

4. Response time: < 0.5 s

5. Grounding resistance: < 55 Ω

6. Protection grade: Ip65

7. Ex-mark : Exd[ia] IIBT4

8. Warning: sound and light alarm

9. The input signal: in accordance with API RP1004, EN13922 standards

10. The output signal: relay output, normally open normally closed is optional Interface capacity 10A, 30 VDC or 10A, 250 VAC

11 .6 electrical contacts of plug and socket connection, compatible with foreign Scully, Civacon,   Liquip, Dixon brands

12. The essence safety output parameters:

Uo  = 16.5 V, Io =874 mA  Po = 3.6 W

Co = 1.8 uF       Lo = 0.09 mH

5.System installation

5.1Electrical installation 
5.1.1circuit board

appendix 1: ET -SLC-B  controller circuit board schematic.

1.The technical requirements

A. 1 ~ 6terminals for the relay output signal, pay attention to the normally open normally closed choice;

B. 7 ~ 8 terminals for power input, the squared cable > 2 x 1 mm, outside diameter between Φ 8 mm ~ Φ12 mm ;

C. 9 terminal for grounding side, connected to the controller shell, ensure reliable grounding; D. 10 ~ 13terminals by sound and light alarm, using squared cable > 4 x 0.5 mm, outside

diameter betweenΦ 8 mm ~ Φ12 mm.

2.Terminal instructions

A. 1 ~ 3 terminal for the signal output terminal  of grounding;

B. 4 ~ 6 terminal for the signal output terminal  of overfill;

C: 10 ~ 13 terminals for sound and light alarm;

D. 14 ~ 18 terminals for clamp, grounding line, return plate. E. 19 ~ 25 terminals for return socket , grounding bolt,

5.1.2 The electrical connection diagram

appendix 2: ET - SLC-B controller electrical connection diagram.

5.2 Machinery installation

appendix 3: ET - SLC-B  controller installation diagram.

       appendix 4: main controller installation size chart.

       appendix 5: ET - LS-R ruturn  socket installation size chart.