ECT (Engine Coolant Temperature) Sensor An ECT sensor, or Engine Coolant Temperature Sensor is a sensor that is screwed into the engine's block or cylinder head and is used to determine the temperature of the engine coolant. The ECT sensor is basically a thermistor that changes resistance with temperature. When the ECT (engine coolant temperature) is high (hotter), the resistence is low, and when the ECT is low (cooler) the resistence is high. The ECT sensor is usually a two wire sensor that uses a 5 volt reference from the PCM with a ground signal back to the PCM. Here is a photo of one ECT sensor: If the ECT sensor or associated wiring has failed, you may see some of the following ECT sensor DTC trouble codes: P0115 - P0116 - P0117 - P0118 - P0119 - P0125 - P0126 - P0127 - P0128 This informative video provides information on testing and replacing automotive ECT sensors. Check out all of our articles... NOTE: This information is presented for information purposes only.
Technical Guides | Measurement Standards Laboratory of New Zealand Technical Guides are published by the Measurement Standards Laboratory to provide assistance with measurement techniques. Chemical No technical guides at present Electricity Technical Guide 27 – Impedance (RLC) Standards (PDF 226KB) The ac measurement of resistors, inductors and capacitors (R, L and C) requires a clear understanding of exactly what is being measured. Technical Guide 28 – Phase and Sign Conventions for Energy Meters (PDF 171KB) The relationship between voltage and current in a system being metered can be expressed in several ways, e.g. by a power factor, a phase angle, or by describing the load as inductive or capacitive. Length Photometry and Radiometry Mass and Pressure Technical Guide 6 - Magnetic Effects in Weighing (PDF 237KB) An introduction to magnetic effects in weighing and how to avoid them. Technical Guide 7 - Calibrating Standard Weights (PDF 475KB) How to calibrate standard weights to a best accuracy of 1 part in 106. Revised version with improved examples.
MTL - Mineral Insulated Thermocouple with Leads | Temperature Sensors Features: K, J, T and N calibration Temperature range from -200 to +1250ºC Isolated and bonded hot junctions Various sheath materials for different environments (Inconel 600, 310SS, Cupro Nickel, Nicrobell) Sheath diameters from 1.0mm to 10.8mm Various Lead insulation materials (PVC, FibreGlass, Stainless Steel Overbraid, Stainless ArmourFlex) Specifications and Ordering Information: *1 Inconel is a registered trade name of Henery Wiggin & Co Ltd. *2 Nicrobell is a trademark of Nicrobell Pty Ltd. *3 Stainless Steel OverBraid - SOOB. *4 Standard size Plugs and Jacks only. Note: The above covers the more common Thermocouple probes.
UT - Universal Thermocouple | Temperature Sensors Features: K and J calibration Maximum temperature rating 400ºC Various Lead Length Fibreglass insulated lead with stainless steel overbraid (SSOB) Specifications and Ordering Information: Note: The above covers the more common thermocouple probes. Part Number: IN-UTA RTD vs. Thermocouple comparison chart « Ultra Electronics Nuclear Sensors & Process Instrumentation (NSPI) Resistance Temperature Detectors (RTDs) Resistance Temperature Detectors (RTDs) are sensors that measure temperature by correlating the resistance of the RTD element with temperature. Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. RTDs are generally considered to be among the most accurate temperature sensors available. Thermocouples A thermocouple consists of two dissimilar metals, joined together at one end. Thermocouples are manufactured in different combinations of metals and/or calibrations. Since thermocouples measure wide temperature ranges and are relatively rugged, they are very often used industrial and process applications where accuracy may be a less important factor. Temperature rangeChemical resistance of the thermocouple or sheath materialAbrasion and vibration resistanceInstallation requirements (may need to be compatible with existing equipment; existing holes may determine probe diameter)
Resistance thermometer Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature by correlating the resistance of the RTD element with temperature. Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it. They are slowly replacing the use of thermocouples in many industrial applications below 600 °C, due to higher accuracy and repeatability.  Common RTD sensing elements constructed of platinum, copper or nickel have a repeatable resistance versus temperature relationship (R vs T) and operating temperature range. Platinum is a noble metal and has the most stable resistance-temperature relationship over the largest temperature range. The significant characteristic of metals used as resistive elements is the linear approximation of the resistance versus temperature relationship between 0 and 100 °C.
XU2HI / XU2HN (In-Head, 2 Wire) USB Programmable - RTD and Thermocouple Temperature Input Transmitter | Transmitters Product Specifications: Download XU Sales Brochure Download XU2HI (Isolating) Installation Guide Download XU2HN (Non-Isolating) Installation Guide Download XU Programming Software Note: Requires the XU-USB programming key. Download XU2HI Print Quality Image - 0.21MB. Download XU2HN Print Quality Image - 0.24MB. Click for large view Features: Programmable via USB (requires the XU-USB programming key). Ordering Information: Note: The tables below show the USB programmable input types etc for the XU2HI / XU2HN: The XU2HI / XU2HN can be pre-programmed before dispatch or are easily programmed using the XU-USB programming key and the free XU programming software. XU2HI Ordering Table: XU2HN Ordering Table:
WMR - Wall Mounted RTD Assembly | Temperature Sensors Features: RTD Pt100 DIN Standard element Maximum temperature rating 110ºC Sheath materials 304SS and 316SS Optional head-mount transmitter - Models: XU2HI (Isolated), XU2HN (Non-Isolated) PVC Conduit Head Black Alloy Head Specifications and Ordering Information: * 316SS material available on request. Note: The above covers the more common RTD probes.
SR - Sanitary RTD Assembly | Temperature Sensors Features: RTD Pt100 DIN Standard element 3-Wire RTD configuration Maximum temperature rating 260ºC All sheath material 316SS Optional fast response tip Optional head-mount transmitter - Models: XU2HI (Isolated), XU2HN (Non-Isolated) Environmental Rating IP67 Stainless Steel Head Large Polypropylene Head Large Aluminium Head Specifications and Ordering Information: Note: Response time graph and traceable certificate of accuracy available on request. Note: The above covers the more common RTD probes. LPN-R-H - In Head RTD Pt100 Transmitter | Transmitters Product Specifications: Download Installation Guide For information on the older LPN-R-H version. The LPN-R-H is commonly used with our RTD Pt100 Probes >> Features: Field Programmable. Ordering Information: Specifications:
High Accuracy PT-100 Temperature Sensors Platinum resistance thermometers (PRTs) offer excellent accuracy over a wide temperature range (from -200 to +850 °C). Sensors are interchangeable between different manufacturers, and are available in various accuracy ratings and packages to suit most applications. Unlike thermocouples, it is not necessary to use special cables to connect to the sensor. We supply a range of Class A, Class B and tenth–DIN sensors. Specialist manufacturers can provide sensors with 0.001 at 0 °C accuracy (at a price). For more information please see our application note on choosing PT100 sensors. General Purpose / Low–Cost PT100 Probes Immersion PT100 Probes Insertion PT100 Probes Air PT100 Probes If you cannot see the probe you require here please visit www.alphatemptech.co.uk who can provide special probes built to order.
PT100 sensors (Platinum Resistance Thermometers or RTD sensors) Platinum resistance thermometers (PRTs) offer excellent accuracy over a wide temperature range (from -200 to +850 °C). Standard Sensors are are available from many manufacturers with various accuracy specifications and numerous packaging options to suit most applications. Unlike thermocouples, it is not necessary to use special cables to connect to the sensor. The principle of operation is to measure the resistance of a platinum element. The relationship between temperature and resistance is approximately linear over a small temperature range: for example, if you assume that it is linear over the 0 to 100 °C range, the error at 50 °C is 0.4 °C. This linearisation is done automatically, in software, when using Pico signal conditioners. Rt = R0 * (1 + A* t + B*t2 + C*(t-100)* t3) Where: Rt is the resistance at temperature t, R0 is the resistance at 0 °C, and A= 3.9083 E-3 B = -5.775 E-7 C = -4.183 E -12 (below 0 °C), or C = 0 (above 0 °C) Related standards are IEC751 and JISC1604-1989.
RL - RTD with Leads | Temperature Sensors Features: RTD Pt100 DIN Standard element Maximum temperature rating 260ºC Sheath material 316SS Sheath diameters from 3.3mm to 6.4mm Various Lead Insulation Materials (Silicone Rubber, Tefzel, PVC) Small Diameter Probe with Collar to Adapt to Large Lead Optional Wall Mount Bracket Optional Sliding Flange Optional Compression Fitting Specifications and Ordering Information: Note: The above covers the more common RTD probes.