SENSORS, TEST & CALIBRATION User Manual Reference/Professional Temperature Calibrator Jofra RTC-125/157/158/159/168/187/250/700

User Manual Reference/ Professional Temperature Calibrator JOFRA RTC-156/157/158/159/168/187/250/700 A/B/C JOFRA PTC-125/155/350/425/660 A/B/C  Copyright 2012 AMETEK Denmark A/S

4.10.3 Setting the parameters for DLC- dynamic load compensation - (RTC, B and C versions only) .. 42

This user manual applies to the following instruments: Reference Temperature Calibrators calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with calibrator calibrator with calibrator with sensor and reference inputs reference input sensor and reference inputs reference input sensor and reference inputs reference input sensor and reference inputs reference...

The RTC-156/157/159/187/700 A/B/C instruments and the PTC-series are all designed as dry-block calibrators, whereas the RTC-158/168/250 A/B/C instruments are designed to be used both as dry-block calibrators and liquid baths. Read this manual carefully before using the instrument and ensure that all safety instructions and warnings are observed. When you receive the instrument, the following should be enclosed: • 2 sets of test cables (2 black, 2 red -B versions only) • 1 USB memory stick containing electronic manuals and software package: JOFRACAL, AMETRIM and CON050 • 1 tool for insertion tube...

Read this manual carefully before using the instrument! In order to avoid any personal injuries and/or damage to the instrument all safety instructions and warnings must be observed. The screen menus shown in this manual represent the menus displayed when using a B-version. /v-®\ These calibrators contain Electrical and Electronic circuits and must be recycled or disposed of properly (in accordance with the WEEE Directive 2012/19/EU). • Always supply the calibrator using a power circuit which is separate from essential safety equipment and vital hospital equipment etc., to prevent fatal consequential...

• Never use heat transfer fluids such as silicone, oil, paste, etc. in the dry-block calibrators. These fluids may penetrate the calibrator and cause electrical hazard, damage or create poisonous fumes. • The calibrator must be switched off before any attempt to service the instrument is made. There are no user serviceable parts inside the calibrator. • When cleaning the well or the insertion tube, REMEMBER to wear goggles when using compressed air in the dry-block calibrator and cleaning oil in the liquid bath calibrator. • Use protection shield when calibrating at high temperatures (RTC-700...

• Heat transfer fluids must only be used in calibrators prepared as a liquid bath. If these fluids are heated above specified temperature they will create noxious or toxic fumes. Proper ventilation must be used. • To avoid hazards from treating fluids in a wrong manner, always reduce the "Max. SET-temperature allowed” in the CALIBRATOR SETUP MENU according to the specifications of the fluid to be used. If using a calibrator outside of the fluids specifications there is a risk of fire hazards, personal Injury or chemical release. By reducing the "Max. SET-temperature allowed”, the calibrator cannot...

To prevent this from happening, the insertion tube and the well must be dried. This is done by heating up the calibrator to min. 100°C/212°F until all water left has evaporated. Remove the insulation plug while heating up. It is very important that humidity in the well and insertion tube is removed to prevent corrosion and frost expansion damages. • Do not use the instrument if the internal fan is out of order. • Before cleaning the calibrator, you must switch it off, allow it to cool down and remove all cables. • Always place power cable and cables to attached accessories, such as sensors, in...

• Scratches and other damage to the insertion tubes should be avoided by storing the insertion tubes carefully when not in use. • The insertion tube must never be forced into the well. The well could be damaged as a result, and the insertion tube may get stuck. • Before using new insertion tubes for the calibration, the insertion tubes must be heated up to maximum temperature - 250°C (482°F) / 700°C (1292°F) (RTC-250/700 A/B/C only) and 350°C (662°F) / 425°C (797°F) / 660°C (1220°F) (PTC-350/660 A/B/C only) - for a period of minimum 30 minutes. • The insertion tube must always be removed from...

The RTC/PTC-B-versions have a precision reference input. To achieve the high precision, a set of sensor coefficients relating to the specific sensor must be present in the RTC/PTC. Before use of the RTC/PTC, ensure that the correct coefficients in the RTC/PTC are equal to those from the sensors calibration certificate. This is done with the included PC software JOFRACAL. Please read how to do in the chapter "Reference Sensors” in the JOFRACAL user manual. • The calibrator must not be used for any purposes other than those described in this manual, as it might cause a hazard. • The calibrator...

About the liquid bath (RTC-158/168/250 A/B/C only): • For liquid bath ensure that the sensor is absolutely clean and dry as a few drops of water in the well (liquid baths) might cause a steam explosion. • Do not pour cold fluid into a hot well - it might cause an explosion. • AMETEK Denmark A/S does not take any responsibility, if the well is filled with other fluids than those recommended. • Liquid baths should only be operated by trained personal. • Heat transfer fluids must only be used in calibrators prepared as a liquid bath. If these fluids are heated above specified temperature they will...