The microsKanner can be used with any member of the microK family to add further channels, up to a maximum of 90 expansion channels. Easy to Use: The use of plug-and-play technology means that the extra channels appear automatically on your microK bridge when connected to a microsKanner. You can configure the new input channels in exactly same way as any of the microK’s existing inputs (through the microK’s touch screen or a PC, via an RS232 connection). You just plug in a microsKanner and immediately gain the benefit of the additional channels, making this the easiest channel expansion system of its type. Accurate: The microsKanner replicates the input system of the microK bridge for all 10 of its input channels Measurements made with a microsKanner are therefore to the same accuracy as the microK bridge it is connected to. By adding further scanners the microK system can be expanded to 92 channels without losing measurement performance....

microK GOLD – a unique package Best performance, documented, guaranteed with an unmatched satisfaction promise. Award Winning In April 2017 Isotech won a Queen’s Award for Enterprise in the Innovation category for the co-development of the microK, read more in our news section. Confidence in Thermometry Bridges The microK range of thermometry bridges have rapidly established themselves as the number one choice for temperature metrologists. Many NMIs are now using the new drift free microK technology and sales have exceeded our initial expectations. Of course the microK is not the only thermometry bridge available, there are both older and newer designs of bridge and all claim advantages with performance or measuring method. AC or DC Measurement In the past it was the case that AC Bridges operated with lower noise than DC bridges but the microK uses a new parallel processing technique to match or exceed that which previously needed impedance matching and the use of transformers. Performance Different manufactures claim performance in different ways and it can be confusing to compare specifications. With the availability of the automatic resistance bridge calibrator more and more bridges are being calibrated with reports published, the microK is consistently shown to exceed its specification, which is not the case for all Ask us for the latest reports. Confidence With claim and counter claim we want to give you confidence and have introduced the microK GOLD package. With microK GOLD you get Best Performance – less than 30ppb ratio accuracy – drift free Evidence – shipped with a report documenting the performance Recalibration in years two and three included – return for further evidence Three Year Warranty Evidence Now with the RBC Bridge performance can be measured – with microK GOLD you get evidence at the time of delivery and you can return it for recalibration in year two and three. Guaranteed and documented performance with a unique satisfaction promise. We chall...

The microK 70 and 125 models are designed for the Primary Temperature Laboratories whilst the microK 250 and 500 models were designed for the Secondary Laboratory as well as a wide range of high accuracy industrial and scientific calibration applications. The instruments use a completely new measurement technique to achieve accuracies better than 0.02 parts per million (ppm). In April 2017 Isotech won a Queen’s Award for Enterprise in the Innovation category for the co-development of the microK, read more in our news section. When used with a 0°C cold junction reference unit, or by measuring the junction temperature with a PRT on another channel the instrument is capable of low uncertainty precision thermocouple measurements, with a voltage uncertainty of just 0.25μV, equivalent to 0.01°C with a Platinum / Gold Thermocouple at 1000°C. The microK range consists of four instruments offering a choice of measurement accuracy of 0.07 to 0.5ppm over the whole range, equivalent to 0.07mK to 0.5mK over the whole range of an SPRT with a Ro >2.5Ω. Better at unity ratio. The instruments in the microK range offer performance characteristics and features which are simply not available elsewhere. Comparable instruments available internationally do not achieve the same accuracy or stability (zero drift characteristics with SPRT measurements are not obtainable in any other instrument), other instruments do not support the same variety of sensors, and offer considerably less operational features. The microK family uses solid state construction with no potentiometers or relays which ensures long term reliability and low cost of ownership, a feature of growing international importance....

The milliK Precision Thermometer from Isotech sets a new standard for the high accuracy measurement and calibration of Platinum Resistance Thermometers, Thermistors, Thermocouple and Process Instrumentation (4-20mA) over the range -270°C to 1820°C. The milliK has two input channels for sensors and a third channel for current. It can be expanded to become a measuring system with up to 33 channels reading SPRTs, RTDs, Thermistors, or Thermocouples with the option to control calibration baths and log readings accurately. In addition to low uncertainty measurements from Reference Standards and Industrial sensor measurement the milliK can control Isotech temperature sources, sequencing through a programmable list of temperature set points and log data to internal memory or a USB drive. Wide Range of Sensors SPRTs, PRTs, Thermistors, Thermocouple and 4 – 20mA High Accuracy < ±5ppm for PRTs, ±2μV for Thermocouples and ±1μA Transmitters Logs – Controls Isotech Temperature Sources Massive logging capacity – controls Dry Blocks and Liquid Baths Benefiting You The milliK sets a new standard for value, versatility and accuracy – < ±5ppm over range for PRTs, ±2μV for Thermocouples and ±1μA for current transmitters, see Data Sheet. Supporting a wide range of sensors and functions it replaces individual devices making a cost effective calibration solution. A robust design and operation from AC or DC power allows the milliK to be used in the laboratory, test room or out in the field. The milliK can display in °C, °F, K, Ohms, mV and mA with numeric and graphical display modes. The large back lit display makes configuring the instrument and setting the scrolling strip charts intuitive. The USB port allows for the use of a mouse, keyboard or USB Drive. No Compromise Design The design team have considered industrial users and applications in order to avoid measurement errors and problems encountered in some instruments from other manufacturers: Eliminates Thermal EMF Errors in P...

The millisKanner channel expander has eight input channels, and each can be configured individually for SPRT, PRT, Thermistor or Thermocouple input. This gives ultimate flexibility with no need for separate devices for resistance or thermocouple inputs. A maximum of four devices can be added to the milliK providing 33 sensor inputs as well as the 4 – 20mA Process Input. With no loss of accuracy and total flexibility a milliK system can be configured to suit a wide range of reference thermometers and units under test. This adaptable system saves on cost with no need for separate dedicated expansion modules and the flexibility maximises the usefulness of each channel. A solid state design avoids mechanical relays and provides high reliability. The inputs are isolated with galvanic isolation between the contacts and the PSU and also from the control circuitry which allows for better measurements and lower noise. The millisKanner is controlled from the milliK with plug and play operation. For use as a standalone switch for PRTs, the device has UP / DOWN touch buttons or can be operated via RS232. The temperature of the input thermocouple connectors can be read directly over RS232 to facilitate reference junction compensation....

Operating principles The problem: Temperature measurement is one of the most demanding applications of resistance measurement. It requires the measurement of resistance ratios to accuracies of 0.1ppm or better. While dc resistance standards are sometimes available at this level, ac resistance standards are generally not. So how can we show our bridges are accurate at this level, and that our resistance and temperature measurements are traceable? The linearity check One simple method for checking a resistance bridge is to measure a pair of resistors separately, and then measure the two in series. Ideally the series measurement should equal the sum of the two individual measurements. If not, then the measurements give us a bit of information about the errors in the bridge readings. Note that we do not need to know the values of the resistors to make this test work. The complement check Another check is to measure the ratio of two resistances, say R1/R2, then swap the resistors and measure the reciprocal ratio (or complement), R2/R1. Ideally the product of the two measurements should equal 1.0 exactly, if not, the measurements give us more information on the bridge errors. Once again, we do not need to know the values of the resistors to make this test work. The combinatorial method The RBC exploits the same principles as the linearity and complement check. It uses a network of four stable four terminal resistors that can be connected in 35 different series and parallel combinations. By measuring each RBC combination in the two different ways (as with the complement check) up to 70 different measurements can be made. Since the RBC has just four unknown resistance values, we have up to 66 independent measurements containing information about the errors in the bridge readings. The combinatorial calibration method is particularly powerful because it is not necessary to know the actual values of the four resistors, or their frequency dependence. This means we can calibrate...

TTI-10 brings laboratory level performance of up to 10mK (0.01°C) and resolution up to 0.001°C in a portable handheld instrument. Battery life is typically 20 hours from a 9V PP3 battery and a protective rubber boot offers protection in field use. The instrument can capture the minimum, maximum and average values over up to 4000 measurements with a logging rate selectable in the range of 1 second to 30 minutes. The TTI-10 has an easy to use “learning calibration mode” that allows the TTI-10 to be system calibrated with a Platinum Resistance Thermometer simply by comparing it to a calibrated standard thermometer, no need to calculate coefficients or data, simply enter the reference probe temperature or temperatures and the TTI-10 does the work for you. A USB interface allows connection to Isotech Cal Notepad software with its charting and logging features. TTI-10 supports Isotech Semi Standard Platinum Resistance probes with system uncertainties (probe and instrument) as low as 20mK. We recommend the 935-14-61 and 935-14-16 probes detailed below and have special calibration deals available. Other probes and ranges are available, refer to Semi Standards – Platinum Resistance Thermometers...

Quite simply the Isotech TTI-22 High Accuracy Thermometer sets new standards in the price to performance ratio for industrial and secondary resistance thermometry. If you need high accuracy at an affordable price you have to look at the TTI-22. The TTI-22 has an accuracy of 0.001°C and a resolution of 0.0001°C (0.00004 Ohms). It has two input channels, is lightweight (1.8kg) and will operate for more than 10 hours from two small AA cells. It has both RS232 and Ethernet ports. Simple to use, supporting both Industrial 100 Ohm probe and SPRTs to ITS-90, 25.5 and 100 Ohm. Up to 30 probe calibrations can be stored along with the calibration expiry date so the instrument can warn when the calibration time has been exceeded. Built in statistics calculation can show you both the measured and average values along with the standard deviation over previous measurements. The Isotech TTI-22 is ideal as a reference standard alongside liquid calibration baths, for the smallest uncertainty calibration with Dry Blocks or for demanding standalone measurement applications. Previously this level of performance was confined to specialist laboratories with expensive thermometry bridges; TTI-22 delivers 5 to 10 times the performance of comparably priced instruments. The TTI-22 uses the same patented measurement technique as the earlier TTI-2. Each measurement performs a zero point and gain correction. The switched polarity DC measuring current (0.4mA) eliminates thermal EMFs. Surface mount construction ensures long term reliability....

This instrument has now been replaced by the superior milliK Precision Thermometer The TTI-7 PLUS is a very high accuracy multi purpose digital thermometer for both platinum resistance thermometers and thermocouples. Laboratory users will welcome the features to eliminate Thermal EMF Errors and Self Heating Errors along with provision to store the calibration data of up to 20 PRT probes. The rugged aluminum case, internal battery pack and integrated power supply ensure reliable portable field use for demanding measurement applications all at great value for money. Dual Channel input allows a probe on Channel B to be calibrated against a standard on Channel A – directly compare any combination of PRT and Thermocouple. The TTI-7 PLUS supports thirteen thermocouple types, B, C, D, E, J, K, L, N, R, S, T, U, Au/Pt along with 25 and 100 Ohm platinum resistance thermometers. Data Logging and Statistical Analysis The TTI-7 PLUS includes an inbuilt data logger internally storing up to 4,000 date and time stamped readings. Recall the data from the front panel or send to a PC or Printer via the PC interface which is included as standard. The powerful math function enables statistical analysis of the captured data, mean, max, min, peak and standard deviation. The TTI-7 plus now also includes a real time rolling display....

Primary Standard cells fit into the Medusa and Oberon, covering from Indium to Copper Points. These cylindrical cells are 42mm diameter and have a cavity 9mm diameter x 87mm deep. The Medium Temperature “Hockey Puck” cells are 64mm diameter and fit into the Gemini R. There are a range of High Temperature Cells for the Pegasus, 33mm diameter with a 10mm cavity....

First introduced to assist in relation to the SARS outbreak during the early 2000s the Model 988 is now helping in relation to coronavirus. It can be used to increase the accuracy of thermal imagers being used to measure human skin temperature in temperature screening of applications. It can also be used to check non-contact clinical thermometers. This blackbody meets the demand for a simple, cost effective but high accuracy calibrator for the calibration of thermal imagers and infrared thermometers used at temperatures around human body temperature. A 70 mm diameter ridged plate is heated or cooled with an internal solid state thermoelectric heat pump. The temperature of the plate can be set from 20°C to 45°C to a resolution of 0.1°C. The standard version has a 210mm long tube mainly used with thermal imagers. A second version has a 40mm tube more suited for checking medical thermometers....

Isotech first introduced the Model 988 to assist in relation to the SARS outbreak during the early 2000s. Used to increase the accuracy of thermal imagers being used to measure human skin temperature in temperature screening of applications. It can also be used to check non-contact clinical thermometers. Following the increased demand in relation to COVID-19, Isotech have now introduced an updated blackbody source, Model 989. Model 989 has the same performance as the earlier 988 but is smaller and has two easy mounting points fitted allowing for ease of use. When used in conjunction with IR cameras, the device can easily be suspended from above or below using standard tripod mounting brackets. The upgraded controller that is used can either be locked to a single temperature or it can be adjusted over a new wider temperature range of 20°C to 50°C. Model 989 also has a PC interface fitted as standard that allows the temperature to be both monitored and adjusted from a PC. This Model 989 blackbody source meets the demand for a simple, cost effective but high accuracy device for the calibration of thermal imagers and infrared thermometers that are used at temperatures around that of the human body. Unlike heat only devices, this model uses a solid state thermoelectric heat pump so that the block can be both cooled and heated. This brings two benefits, the blackbody can maintain its set point in high ambient temperature conditions and it can also operate below the ambient temperature. Response time is very fast, typically less than five minutes to achieve the required temperature (see graphs). The Model 989 can be used either horizontally or vertically. The device features a high emissivity ridged plate that is 70mm in diameter. The temperature of the plate can be set from 20°C to 50°C to a resolution of 0.01°C. To reduce sensitivity to air draughts and ambient temperature effects, a stainless steel tube can be fitted in front of the plate with evaluation showing this ha...