A dial thermometer only works if someone can read the dial, and this one separates the two jobs. The sensing bulb goes into the pipe, boiler tapping or tank; the case goes wherever a person can actually stand — a boiler front, a panel, a handrail — with a capillary joining the two. Inside there is no battery, no supply and nothing to configure: the pointer moves because the medium heats the bulb, and it returns on its own when the line cools. The general type gives a straight reading; the electric-contact type adds switch contacts that change at a temperature you set, so the same instrument can raise an alarm or cut a burner. Cases are bakelite or stainless steel, the standard range runs from 0 °C to 400 °C and can be customized, and two standard threads cover most boiler, engine and process connections. Working as a marine pressure thermometer supplier for chandlers, repair yards and plant buyers, we check the thread, the range and the medium against your line before the unit is built.
| Parameter | Value |
|---|---|
| Product Name | Pressure Gauge Thermometer |
| Case Material | Bakelite and Stainless Steel |
| Model | WTZ/Q-280; WTZ/Q-288 |
| Temperature Range | 0-400°C(Customizable) |
| WTZ-280 Accuracy | 1.5 |
| WTZ-280 Mounting Thread | M27x2, G3/4 |
| WTQ280 Accuracy | 2.5 |
| WTQ280 Mounting Thread | M33x2, G1" |
| Measured Media | Non-corrosive liquid, gas and steam |
| Place of Origin | China |
| Advantage | Accurate measurement, sensitive response, clear scale |
| Applications | Suitable for Marine, steel, petrochemical industry |
Put five things in the enquiry: the version (general or electric contact), the medium and whether the line carries steam, gas or liquid, the temperature range printed on the old dial, the thread on the boss, and the case material you want. Add the capillary length — measure from the tapping point to where the dial will sit and allow for the route — because that figure is set for each order and changes what we build. Quantity, price, lead time, payment terms, packing and marking are quoted order by order, so confirm them with your sales contact when you send the enquiry; if the goods go straight to a vessel rather than into stores, say so, because the labelling is not the same. If the same job also needs a thermocouple or a glass thermometer, put those on the same enquiry and they can be quoted together. On documentation, ask for the outline drawing and parameter sheet when you need them for incoming inspection or a survey file, and we will confirm model, range and thread in writing against the order. As a marine pressure thermometer supplier we would rather settle the thread and the capillary length first and quote afterwards — a dial thermometer that arrives with the wrong thread costs more than the conversation.
Buying instrumentation for a vessel or a plant usually comes down to matching the part to the job. Our team at Jiangmen Jiexi Machinery Equipment Co., Ltd. has worked with buyers worldwide since 2013, and we start before the order: confirming the range, thread, connection and mounting you need, checking a model or part number against the equipment on site, and saying plainly where a standard unit stops and custom work begins. After delivery we stay reachable for installation, commissioning and fault-finding, with quality control that includes two extra testing steps beyond industry standard.
Usually, if the thread and range match and there is somewhere to run the capillary. The two read in different ways — a bimetal strip bends inside its own stem, while this instrument carries pressure from a remote bulb — but both finish as a pointer on a scale. The practical difference is position: a bimetal dial has to stand at the measuring point, so it suits a short, accessible tapping and a local reading. Where the tapping is lagged, high up or hot, the capillary moves the dial to somewhere readable, and the contact version adds a signal a plain bimetal dial cannot give. If the old dial sat at a comfortable height on a short boss, a bimetal replacement is usually the simpler and cheaper buy; where the position is the problem, this is the version that solves it.
No. The reading is mechanical: heat at the bulb becomes pressure, the pressure moves the spring tube, and the pointer follows. Nothing needs a supply, and the indication survives a blackout. The only electrical part is the contact set on the electric-contact version, which is a switch wired into a circuit you already have — an alarm, an indicator or a burner interlock. Tell us what that circuit draws so the contact can be matched to it.
Non-corrosive liquids, gases and steam, which covers most marine and plant readings: boiler water and steam, cooling water, lube oil, fuel gas, chilled water and air. The bulb and the sealed system are metal, so a mildly aggressive medium is usually a question of the right bulb material rather than a different instrument — describe what is in the line and we will confirm what suits. Hygienic duties such as potable water or food contact should be raised separately so the correct construction can be quoted.
Yes. 0–400 °C is the range we build as standard and it can be customized; the two standard threads cover most connections and other tappings can be discussed; and the capillary length is set for each order. Send the range printed on the dial you are replacing, the thread on the boss and the length of the run to the dial position. As a marine pressure thermometer supplier we confirm those three points in writing before the unit goes into build, because they are the three that decide whether it fits.
That is the most common place these units go, and the design suits it. The movement is built to take the constant vibration of a working engine room, the case can be stainless where spray reaches the dial, and the scale is large enough to read from the walkway instead of from inside the casing. The one thing to watch is heat at the dial itself: a marine boiler temperature monitoring thermometer can sit on a front that runs hot, so keep the case out of direct radiant heat where the layout allows, and tell us the position if the front is very hot — it affects what we recommend for the case and the capillary.
