Linear scale
Expansion of the fill gives a linear scale, so a value can be read precisely anywhere across the range.
EN-13190 / BS 5235 / ASME B40.3
Mercury and Gas Filled Thermometer
A filled thermometer uses the expansion of its internal system to move the pointer. It gives a continuous, easy-to-read scale and can be supplied with a remote capillary where the display needs to sit away from the process.
- Accuracy class
- ± 1% of FSD
- Max. stem length
- 2000 mm
- Max. capillary
- 15 m
- Range to
- 600 °C
Overview
A direct-reading thermometer with a linear scale
A filled thermometer uses the expansion of its internal system to move the pointer. It gives a continuous, easy-to-read scale and can be supplied with a remote capillary where the display needs to sit away from the process.
In these thermometers a linear scale is obtained, which makes the system preferable to customers who require a precise reading of scale over the whole range. Filled thermometers are manufactured as per EN-13190, BS 5235 and ASME B 40.3.
Rigid stem, every angle and distant reading types, the last with capillary up to 15 metres.
Made to standard
Manufactured as per EN-13190, BS 5235 and ASME B 40.3.
Distant reading
Capillary types up to 15 metres, in a choice of five capillary armouring options.
Long stems
Maximum stem length of 2000 mm, twice that of the bimetal equivalent.
Specifications
Standard model; options to order
| Type | Rigid stem, every angle and distant (capillary, maximum up to 15 metres) |
|---|---|
| Nominal size | 100 mm, 150 mm |
| Accuracy class | +/- 1% of FSD |
| Sensitivity | 0.2% of range span |
| Bourdon material | Chrome-Moly steel (STD), stainless steel (optional) |
| Case and bezel | SS304 weatherproof to IP-55 and 65 as per IEC-60529, drawn steel black powder coated |
| Bulb and stem dia | 6 mm, 8 mm, 10 mm (STD) and 12 mm (optional) |
| Connection | 1/2" BSP / NPT adjustable, others optional |
| Max. stem length | 2000 mm |
| Mounting | Direct bottom, direct back, surface bottom, flush panel back entry (surface bottom applicable for capillary type gauges only) |
| Pointer | Micrometer zero adjuster type |
| Capillary types | Inner steel capillary covered with copper tube · with AISI 304 SS tube · with AISI 316 SS tube · flexible armouring · PVC cover |
| Standard ranges | 0-50, 60, 100, 120, 150, 200, 250, 300, 400, 500, 600 °C and compound. Maximum measurement on negative side −38 °C |
Optional accessories: shatterproof or toughened glass, electric contact, maximum pointer, glycerine or silicone filling, vacuum protection, special dial design and thermowells.
Direct reading, or remote capillary?
Share the temperature range, dial size, stem length and whether the indication is local or remote. We will confirm the construction and capillary length.
- Fluid, specific gravity and concentration
- Flow or level range, and line size
- Operating pressure and temperature
- Material of construction and end connection
- Output, display and area classification