Boiler house

Level controls

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2014

2.3.1

AI-P402-15

AB Issue 7

Tank Level Control (On/Off)

Description

Warning: This document does not contain sufficient information to install the system safely. See the Installation and Maintenance

Instructions supplied with the products for full details.

The Spirax Sarco (on/off) tank level control system is suitable for most qualities of industrial waters down to a nominal 1S/cm or 1 ppm at

25°C minimum. The controllers must be mounted in an enclosure or panel to provide environmental protection. They may be mounted on a

'top-hat' DIN rail using the mounting clip provided or the controller base may be screwed directly to a chassis plate.

LC1350 controller

LC1350

AL

OK

Applications

On/off tank level control can be achieved using the

Spirax Sarco LC1350 controller in conjunction with

LP10-4 level probes. The LC1350 controller is able to

provide the following functions:-

a) Pump-in control with low or high alarm or

b) Pump-out control with low or high alarm or

c) High or low alarm plus extra low alarm.

Typical arrangements

We recommend the probe is in a protection tube. The

metal tank generally forms the earth return. However,

where the tank is of a non-conductive material one of

the probe electrodes should be used to provide the

earth return.

Pump

LP10-4 probe

t

High level alarm

t

Pump off

t

Pump on

t

Low level alarm

Pump

contactor

Fig .1 Pump fill with low level alarm

LC1350 controller

LC1350

AL

OK

Solenoid

valve

LP10-4 probe

t

High level alarm

t

Valve closed

t

Valve open

t

Low level alarm

Fig. 2

Valve control fill with low level alarm