• 1, 2 or 3 pen temperature, pressure & flow recording

• Uses proven and reliable Rototherm temperature, pressure and differential pressure systems

• Simple installation and maintenance requirements

• Wall, panel, portable or pipe mounting available

• Fully mechanical versions available

• Electrical, battery or mechanical chart drive options

• Large 12 inch diameter chart

• Large choice of temperature, pressure and differential pressure ranges

• Interchangeable with Barton Chart Recorder

General Description

Case

The Clearscan recorder case is made from high quality zinc coated steel, finished in epoxy powder paint that has a high resistance to weathering, scratches and industrial fumes. The window is high quality acrylic. The case has a lockable front-hinged door, permitting easy access to the chart and pens, and may be either wall, panel or pipe mounted.

Pens

The Clearscan recorders utilise sealed ink capsules with built-in fibre tipped pens which are simple to replace and without any mess. Single pen recorders and the first pen of two and three pen recorders trace in red ink; the second pen of two pen and three pen recorders traces in blue and the third pen of three pen recorders in green. Each recorder is supplied with a spare packet of pens.

Charts

Clearscan Chart Recorders use a 12 inch circular charts which are interchangeable with Barton, Graphic Controls and Bristol charts. The standard chart durations are one revolution every 24 hours or 7 days - other rotations are available. A pen lift is fitted to ease chart changing. Each recorder is supplied with a packet of 100 charts.

Chart Drive Motor

The Clearscan Chart Recorder uses chart drive motors that are available as mains powered, mains powered with battery back-up, mechanical (springwound) and battery operated with a wide variety of chart speeds (24 hour and 7 day are standard).

Temperature Systems

The Clearscan chart recorder uses the proven and reliable Rototherm stainless steel thermal system. These consist of a bourdon tube, stainless steel capillary and a stainless steel bulb. All systems are filled with a non toxic filling temperature systems.

Pressure Systems

Proven and reliable pressure systems are used to record gauge pressure, vacuum as well as combined pressure and vacuum. The pressure system, unlike other manufacturers models, uses a bourdon tube pressure element - therefore, in the unlikely event of pressure system failure, only the pressure element needs to be replaced - and not the complete recorder.

Differential Pressure Systems

Clearscan utilises a high quality differential pressure unit that can record differential pressure and flow. Housed in a high quality Carbon Steel or 316L Stainless Steel enclosure, wetted parts material in Stainless Steel (with an option for certification to NACE) to suit a broad range of process applications. Minimum differential pressure range is 0 to 100” Wg with a maximum of 800”Wg. The maximum working pressure is 6000 psig (400 bar).

Specifications

Accuracy +/-1% FSD

Ambient Temperature -20ºC to +50ºC

TEMPERATURE SYSTEM

Measuring Element

Rototherm thermal bourdon tube temperature compensated.

Capillary

Microbore stainless steel tube with 3mm diameter stainless steel cover (type C1) as standard. Other capillary types are available.

Bulb and Stem

Stainless steel BS970 316. Standard diameter is 12.7mm.

Fittings

Compression gland (adjustable). Stainless steel (1/2” BSP is standard). Other BSP, NPT and API are available on request. (suitable for pressures up to 3.5 bar)

PRESSURE SYSTEM

Measuring Element

Bourdon Tube, Helical Coil or pressure capsule, in non ferrous or stainless steel material as applicable. Monel to NACE standards is offered as an option.

Pressure Ranges

Standard pressure ranges available up to 30,000 psig. Other non-standard ranges may be available upon request.

Process Connections

1/4” NPT female top and bottom. 1/2” NPT available via suitable adaptors.

DIFFERENTIAL PRESSURE SYSTEM

Body Material

Carbon Steel, 316L Stainless Steel and 316L Stainless Steel to NACE.

Wetted Parts

316L Stainless Steel and 316L Stainless Steel to NACE.

Seals

Buna-N is standard. Viton® option (a registered trademark of Dupont).

Pressure Ranges

Standard pressure ranges = 0 to 100, 200, 300, 400 and 800” H2O. Other non-standard ranges may be available upon request.

Maximim Working Pressure

6000 psig (400 bar)

Process Connections

1/4” NPT female top and bottom. Other threads are available.

Chart Drive Motor

Single & dual speed mechanical

Multi speed battery*

Mains powered option available

*Battery operated chart drive versions utilise the popular Sonceboz 820R001 model. Battery operated chart drives require 1.5 volt Alkaline “C” size cell.

Charts

Disc 300mm (12 inches) diameter. Standard dividing 40, 50, 60, 70 or 80 linear divisions. Interchangeable with Barton, Graphic Controls and Bristol charts.

Inking System

Disposable fibre tipped pens.

2 pen : red & blue.

Case

High quality steel finished in 2 pack epoxy powder paint that has a high resistance to weathering, scratches and industrial fumes. The case has a lockable front-hinged door.

Window

Acrylic

Mounting

Wall / Panel, Portanle or suitable for 2” pipe mounting.

Bulb Types

Type 301

This bulb type is used when no compression fitting is required. This bulb may be held in place by a bracket or clip (not supplied by Rototherm) or may inserted directly into the process.

Type 302

This bulb has a compression gland fitting that slides along the capillary and is tightened into the required position. This bulb type is only available with plain stainless steel capillary (type C1) - armoured capillaries are not available as it is not possible to move the fitting along the armoured capillary. Bulb length cannot be specified.

Type 303

Compression gland fittings tighten on the bulb to provide liquid and gas tight seal. Once fitted the position of the gland fitting can only be altered by cutting off the olive and replacing it with a new one. If required this bulb type may be specified with a compression gland fitting - in this instance please confirm the required overall length of the bulb.

ANSI 11/16” Diameter

This type of bulb is a replacement for the bulb found on Barton