A HITOP 1 - installed as part of a combined system with tank High Level Alarm and contents gauge.

        Float operated for applications in clean fuels, chemicals and water based products.
        Stainless steel, Polypropylene or Nitrile float probes available.
        A micro PLC monitors the input for cable breaks and short circuits.
        For installation by competent Instrument engineers or electricians.

An integral “prompt” feature means the system can prompt the user to perform a system test at the start of each month.


The Standard Base “HITOP” Package Includes:-

A 700mm long stainless steel probe with float switch. (Options available).

Fitted in the top of the tank using a brass or stainless compression fitting, which allows for adjustment of the float height.

Steel Control Cabinet.

High intensity LED indicators – No lamps to replace.

Audible alarm sounder.

Monthly test prompt.

Short circuit and cable break detection.

Output contact for each probe: For remote alarm or valve/pump inhibit.

1, 2, 3 and 4 probe units available as standard.

ATEX versions are available for use with probes to be mounted in hazardous areas.

Prices start at £539.00 for the basic HITOP 1 system as illustrated above.
(Or £609.00 for the intrinsically safe ATEX version “HITOP 1 EX”.)

Panel mounted in the
operators cabin.

High Level probe mounted
in the tank top.
A vibrating fork SIL2
compliant device.

Internals of the Atex
compliant control panel.

( Click to enlarge )
( Click to enlarge )
PAWCO "HITOP +" System


8 Oaktree Villas
Station Road
Newton Poppleford
EX10 0EP

Tel: 07903 218 377

For help and advice please do not hesitate to contact us .......
We recommend .... that float based systems are periodically proved by removing the probe and immersing it in a product sample, as part of a regular preventative maintenance regime.

For applications in such products use the tuning fork or capacitance probes offered with our “HITOP +” systems with SIL2 rating for increased reliability.

The standard float based system should not be used in products which are likely to cause build up or clogging of the float .


316 stainless steel probe and float.
Density > 0.75Kg/l
Max temperature 100 Deg.C
Process connection 1” BSP (G1)
Process pressure < 1 Bar
IP rating IP64
ATEX version  is certified to Ex II (1) G D [EEx ia] IIC.  Cable restrictions apply, dependent on the application.

Tel: 07903 218 377    sales@pawco.co.uk
8 Oaktree Villas, Station Road
Newton Poppleford, Sidmouth  EX10 0EP