Supply Water Leakage Protection

System LMI-B

system LMI-B Ill.: System LMI-B

Application:

Small institutions

Components:
  • Intake flow meter
  • Cutoff valve ¹)
  • Control unit
spacer

Monitoring Functions


 

Leakage:
System LMI-B permits the continuous discharge of a preset amount of water. If this amount is surpassed in a single discharge, a Max Alarm is issued, and the water supply is cut off. ¹)
 

Seepage:
System LMI-B checks that water flow in the installation can drop and remain below a preset level for a preset time duration, and will issue a seepage alarm and cut off the water supply ¹) if this fails to occur daily.
 

System Error:
System LMI-B checks that the flow meter issues impulses regularly, unless the Holiday function is active.
Whenever the valve is closed - manually or by alarm -  system LMI-B checks its tightness. ¹)
If a component fails, a System Error is issued. The water supply is cut off for meter errors. ¹)
 

Supply Error:
System LMI-B monitors the mains supply and all internal supplies. If either of these fail, a Supply Error is issued. This may not cause a cut-off of the water supply.
 

Alarm Functions

On leakage and meter errors, system LMI-B will cut off the water supply ¹), issue visual and audible alarms, and activate the alarm relay.
Supply errors are reported via the alarm relay, and possible also visibly and audibly.
Valve error are reported visibly.
 

Variants:
Type LMI-B-V0 is used where firefighting hoses or sprinklers are part of the monitored supply water installation. This type must always be connected to an alarm- or dialout system.

Specifications

Controls and Indicators:
Operation, alarm and state indicators, buzzer.
Buttons for temporary free discharge selector, holiday function and alarm acknowledge.

Leakage Monitor:
Permissible single discharge selectable 125, 250, 500 eller 1000 litres.
Flow minimum to terminate discharge 15 l/h.
In holiday mode, permissible single discharge is 20 litres regardless of setting.
Free discharge of preset duration 1-8 hours.

Seepage Monitor:
Seepage tolerance 2, 4 or 8 litres in 30, 60 or 120 minutes. Observation interval 24 hours.

Mains Connection
230V 50Hz L/N/PE via external key switch. Power consumption max 20VA.

Options

Liquid Sensor Attachment:
System LMI-B accomodates via interface ILS-C up to two liquid sensors LS-X, whereby the system offers point protection of a particularly sensitive area so that the water supply may be cut off on Liquid Sensor alarm if desired. ¹)

SMS-alarm:
By attachment of an external SMS-alarm to the alarm relay output, system LMI-B can ship a text message to a selected mobile phone number.


Installation diagram system LMI-B
 
system diagram LMI-B
1: Control Unit   2: Flow Meter   3: Cutoff Valve ¹)

¹) not applicable to type LMI-B-V0

spacer
System Capacity and pressure loss Dimensions
Nom. cap.
Qn (m³/h)
 ΣΔp@Qn Equivalent
Kvs (m³/h)
(mvs) (kPa) Flow meter Cutoff valve
LMI-B 1,5 1,1 11 3,3 ½" x 110 mm ¾" x 76 mm
LMI-B-V0 1,5 1,1 11 3,3 ½" x 110 mm

EAN/UPC ordering codes here

Download System LMI-B datasheet in pdf-format

spacer