Filled System Thermometers

Transcription

1 illed System Thermometers Model N & NR Mechanical Thermometers ata sheet : ST/2012 The Rototherm range of filled system thermometers offer tough yet accurate instruments with rigid stems for direct mounting or with flexible capillary for remote reading. Most models in the range may be specified with electrical contact heads to provide alarm or control functions. Rototherm non toxic filled system thermometers are designed to give guaranteed reliability over a wide range of ambient temperature conditions and are compensated for ambient temperature changes from - to +50º. N1 & N2 Thermometers Where display is required some distance from the sensing point, for example on an instrument panel, capillary thermometers should be used. The dial can be located up to metres from the sensing point and isolated from dirt and vibration. The sensing bulb is connected by stainless steel microbore capillary, protected by stainless steel tubing. or severe conditions, flexible armour can extend the entire length of the capillary. lternative protections can be specified if required. Specifications - N1 & N2 Thermometers ase & ezel N1 iecast luminium. N2 4 stainless steel. 316 stainless steel option. ial learly marked black characters on white background lass as standard. Options - acrylic and toughened glass. ulb / Stem 316 stainless steel Microbore stainless steel tube with 3mm O stainless steel protection. Maximum capillary Length metres (for as filled instruments) 12 metres (for ylene filled instruments) See table for standard temperature ranges ccuracy lass 1.0 (±1.0% S) (±2% when electrical contact heads are fitted) mbient Temperature Head compensated for variation in ambient temperature from - to +50º. Models N1 eneral Purpose capillary Thermometers Tough accurate thermometers housed in a gasket sealed diescast aluminium case. N2 Stainless Steel ased Thermometers Reliable, accurate industrial thermometers housed in a stainless steel case with the option of 100mm or 160mm diameter dial N1 42 N1 46 N2 42 N2 48 N2 62 N2 66 N mm ial, Surface Mounted ottom ntry 100mm ial, Panel Mounted ack ntry 100mm ial, Surface Mounted ottom ntry 100mm ial, Panel Mounted ack ntry 100mm ial, racket Mounted ottom ntry 160mm ial, Surface Mounted ottom ntry 160mm ial, ial Panel Mounted ack ntry 160mm ial, racket Mounted ottom ntry NR1 eneral Purpose Thermometers Tough accurate thermometers housed in a gasket sealed glass filled polyester resin case with adjustable zero. Instruments can be configured as vertical or horizontal mounting. NR2 Stainless Steel ased Thermometers Reliable, accurate industrial thermometers housed in a stainless steel case with the option of 100mm or 160mm diameter dial. NR1 42 NR1 46 NR2 46 NR2 62 NR mm ial, ottom ntry 100mm ial, Lower ack ntry 100mm ial, ottom ntry 100mm ial, Lower ack ntry 160mm ial, ottom ntry 160mm ial, Lower ack ntry xcellence the World can Measure TM

2 Specifications - NR1 & NR2 ase & ezel NR1 lass filled polyester resin, non toxic, fire retardant, black. NR2 4 stainless steel. 316 stainless steel option. ial learly marked black characters on white background lass as standard. Options - acrylic and toughened glass. Stem 316 stainless steel See table for standard temperature ranges Stem imensions 12.7mm diameter (other non standard diameters are available on request) Standard stem lengths 200mm, 0mm, 400mm and 500mm. Sensitive length depends on temperature range and filling medium and is indicated by shallow waisting. ccuracy ±1.0% S (±2% when electrical contact heads are fitted) mbient Temperature Head compensated for variation in ambient temperature from - to +50º. Movement irect acting bourdon tube with bimetallic compensator. Option silicone damped Standard s - N1, N2, NR1 & NR2 pproximate Sensitive Length - imension 12.7 mm bulb / stem diameter egree egree ylene Non Toxic illing Nitrogen Non Toxic illing - to +70 º -20 to 160 º mm Not available 0 to 60 º to 140 º 40 mm Not available 0 to 100 º to 220 º mm Not available 0 to 120 º to 250 º mm Not available 0 to 160 º to 0 º 25 mm Not available 0 to 200 º 50 to 400 º 25 mm 125 mm 0 to 0 º 0 to 550 º Not available 125 mm 0 to 400 º 0 to 700 º Not available 125 mm Other non standard ranges may be available - please check with Rototherm sales ulb Types - Models N1 & N2 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. 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 1) - armoured capillaries are not available as it is not possible to move the fitting along the armoured capillary. ulb length cannot be specified. ompression 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. this length is adjustable sensitive portion this length is adjustable

3 imensions NR imensions NR2 º º imensions N2 º Length in Metres 3 holes K diameter on p.c.d. L = Stem Length = ulb/stem sensitive length Length in Metres ll dimensions are in mm. rawings are for illustration purposes only. imensions ack lange Panel Mounting racket Mounting irect Mounting 100mm 160mm 100mm 160mm 100mm 160mm 100mm 160mm Panel ut Out Weight 1.2 kg 1.8 kg 1.2 kg 1.8 kg 1.2 kg 1.8 kg 1.2 kg 1.8 kg K L lectrical ontact Heads (Model N2 & NR2 only) To provide alarm or control functions, filled system thermometers can be specified with electrical contact heads mounted in a clear plastic hood which replaces the standard window. The set point can be adjusted to any position on the scale with a removable key. Single and dual contacts systems are available. lectrical contact heads provide a repeatable switching point, but the absolute accuracy tolerance of the instrument is approximately doubled by the contacts. ontact Rating Standard contact head assemblies: 250V, switching capacity 10W, 18V, maximum current 0.7. Service Indoor use, ambient temperature -10/70º, free from vibration. System Operation reak on rise Make on rise 2 ontacts to break on rise in temperature 2 ontacts to make on rise in temperature reak on rise and make on rise in temperature Typical pplication Temperature control Over temperature alarm Temperature control plus alarm or 2 step pressure control larm and trip ll dimensions are in mm Temperature control plus alarm

4 Order ode - illed System Thermometers N1 iecast luminium ase 100 mm dial, back entry N1 42 N1 46 N2 Stainless steel ase 100 mm dial, back flange, bottom entry 100 mm dial, panel clamp, rear entry 100 mm dial, bracket mounting, bottom entry 160 mm dial, back flange, bottom entry 160 mm dial, panel clamp, rear entry 160 mm dial, bracket mounting, bottom entry N2 42 N2 48 N2 62 N2 66 N2 68 lass (Standard) crylic ulb Type Protection Stainless steel tube, 3.0 mm diameter Stainless steel flexible armour, 6.3 mm diameter Stainless steel flexible armour over stainless steel, 6.3 mm diameter Other (state requirement) Length Insert length in metres (3 metres is standard) Insert temperature range and units from table ompression land itting (type 2 & 3 bulbs only) Not required 1/2 SP male, stainless steel 3/4 SP male, stainless steel 1/2 NPT male, stainless steel Other (State Requirement) Pointer Options & lectrical ontact Heads lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) Maximum pointer Minimum pointer Index pointer No electric contact or additional pointer H xample Order ode - Thermometer º Model, 100mm capillary thermometer, panel clamp mounting, glass window. bulb with 3 metres of type 1 stainless steel capillary. Temperature range 0 to 60º, 1/2 SP male stainless steel gland. No additional pointer or options.

5 Order ode - Rigid Stem illed System Thermometers N1 lass illed Polyester Resin ase 100 mm dial, back entry NR1 42 NR1 46 N2 Stainless steel ase 100 mm dial, ear entry 160 mm dial, bottom entry 160 mm dial, rear entry NR2 46 NR2 48 NR2 62 lass (Standard) crylic Stem length Insert stem length in mm Insert temperature range and units from table ompression land itting Not required 1/2 SP male, stainless steel 3/4 SP male, stainless steel 1/2 NPT male, stainless steel Other (State Requirement) Pointer Options & lectrical ontact Heads lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) lectric contact type (N2 models only) Maximum pointer Minimum pointer Index pointer No electric contact or additional pointer H xample Order ode - Rigid Stem Thermometer 150mm 0-60ºc Model, rigid stem thermometer 100mm dial bottom entry, glass window. Stem length 150 mm. Temperature range 0 to 60º, 1/2 SP male stainless steel gland. Single electric contact - type, make on rise in temperature. TM ISO9001:2008 ritish Rototherm ompany Limited Kenfig Industrial state, Margam, Port Talbot S13 2PW United Kingdom xcellence the World can Measure TM T: +44 (0) : +44 (0) : sales@rototherm.co.uk W: In keeping with ritish Rototherm s policy for continual product development and improvement, we reserve the right to amend specifications without notice Rototherm roup. ll rights reserved. ompany registered in Wales : Registered office as above.