Page 2
WARNING! Avoid electric shock risk when touching the equipment: - Use only suitable power cable with earth connection; - Never power the equipment to the mains socket without earth connection. WARNING! High voltage is present inside this equipment. It can cause great damages and injuries. Do not make any repair service inside the equipment without removing the plug from the supply.
Page 3
EC Directives when installed in accordance with the installation instructions contained in the product documentation: Series T-650PH Description Dry-Block Temperature Calibrator 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on...
T-650PH 1 - Introduction T-650PH T-650PH dry block calibrator controls temperature of an insert in order to calibrate thermocouples, thermoresistances, glass thermometers, thermoswitches etc. Besides providing high accuracy temperature values, it also allows the measurement of signals generated by thermo-elements which are being calibrated. This is possible due to an embedded calibrator specific for these types of signal, including 4-20 mA.
PRESYS Instruments T-650PH T-650PH has also many other features, such as: The electric signal calibrator is independent from the dry block function. Internal buzzer beeps when the temperature reaches the desired value. Keypad that eases the operation and configuration of the calibrator.
Page 8
PRESYS Instruments T-650PH Communication Interface: Description Order Code RS-232 - 9 way D type Connector (COM1) 06.02.1002-00 RS-232 - 25 way D type Connector (COM2) 06.02.1004-00 RS-485 06.02.1006-00 Soft Carrying Case. Order Code: 06.01.1020-00. ISOPLAN Software.
T-650PH 2 - T-650PH Calibrators Operation The T-650PH calibrators keep the block temperature controlled and allow the reading of a thermo-element connected to its terminals. It is possible to verify the thermocouple, RTDs, temperature transmitters etc together with the block temperature value and temperature set point.
PRESYS Instruments T-650PH 2.1 - Menu IN mV, mA, SW: selects millivolt, milliampere or switch input, respectively. OHM: selects ohms input. Following, choose from the menu the wiring in 2, 3 or 4- wire. 2-WIRE 3-WIRE 4-WIRE TC: selects thermocouple input.
PRESYS Instruments T-650PH 2.1.2 - External Probe Connection Place the 4-wire Pt-100 standard sensor into the insert and plug the mini-DIN connector to the external probe input (EXT. PROBE) located on the calibrator front panel, as illustrated in the figure below: The temperature control with the external probe must be enabled by the PRBe option of the PRG menu.
PRESYS Instruments T-650PH 2.2 - Menu CONF CF: Selects the temperature unit between °C or °F. The ITS-90 or IPTS-68 temperature scales are selected for both the thermo-element and for the internal block reference readings purpose. °C-90 °F-90...
Page 14
PRESYS Instruments T-650PH TU: Menu that configures the PID control parameters for the heating side. More details in section 6 - PID Control Parameters. FACT K: Proportional gain I: Integral gain D: Derivative gain FACT: Restore the control parameters to the factory values.
Page 15
PRESYS Instruments T-650PH To verify the step values of a program, select the VARIABLE option and confirm the values shown in the display with the key ENTER. The 10%, 20% and 25% options change the number of steps automatically and recalculate the values according to SETPOINT HIGH and SETPOINT LOW.
Page 16
SCALE HIGH: 100.0 # SCALE LOW: 0.0 # MEM: The T-650PH calibrators allow many special programs and functions that can be of frequent use. In situations like this, it would be useful to store the current configuration in memory in order to save time. Up to 8 configurations can be stored in memory.
The key does not have function in the manual operating mode of the T-650PH calibrators. 2.4 - Programmable Operating Mode Pre-configured programs can be loaded from the calibrator memory, enabling the programmable operating mode.
0.15 °C. At this time the buzzer beeps, in case it is configured to YES. 2.5 - Automatic Operating Mode The thermo-element calibration is performed in an automatic way by the T-650PH calibrator. The configuration, as well as the calibration verification is carried out by the calibrator itself.
Page 19
TAGMAN with the key ENTER. The option ADDRESS selects the communication address of the T-650PH calibrator. The communication protocol used is ModBus - RTU, with no parity and baud rate of 9600.
T-650PH 3 - Recommendations as regards Accuracy of Measurements PRESYS dry block temperature calibrators are instruments of high accuracy level, requiring the observation of all the procedures described in this section, in order to achieve the necessary conditions to get the accuracy levels during the calibrations.
PRESYS Instruments T-650PH 3.2 - Recommendations to Other types of Insert When the user uses a different type of insert, other than the one used to adjust the dry block, the accuracy from the manual is no longer valid, since the thermal contact is different in relation to that insert.
Procedure Turn the calibrator off and RAM ERROR Problem in RAM on. If the error persists, READ MANUAL memory contact the Presys technical support dept. EEPROM ERROR Problem in EEPROM Same as the previous item READ MANUAL memory Level of battery voltage is...
PRESYS Instruments T-650PH 6 - PID Control Parameters The T-650PH temperature calibrator has a PID control algorithm to calculate the block control output. The dry block stability and response time features are related to the PID parameters, explained below: The K parameter (proportional gain) amplifies the error signal between the setpoint and the block temperature to establish the output signal.
PRESYS Instruments T-650PH 7 - Calibration Warning: Enter the following options only after understanding them completely. Otherwise, it may be necessary to return the instrument to the factory for recalibration! In this manual Calibration means Adjustment! Select CAL option from the main menu and press the ENTER key. You should then enter the password (PASSWORD) 9875 to access the calibration menu.
PRESYS Instruments T-650PH Input calibration for is performed in two steps: a) Application of mV signal: For the calibration below, leave terminals RTD3 (+) and RTD4 (+) short-circuited. mV Signal Terminals point point V_OHM3 RTD3(+) and mV(-) 90.000 mV 120.000 mV...
Page 26
PRESYS Instruments T-650PH For T-650PH: Setpoint of the Inicial value to New value to temperature indication record (°C) indication record generated (°C) of the ST 50.00 49.971 49.97 49.995 key 1 150.00 149.964 149.96 149.995 key 2 250.00 249.943 249.94...
Only the 6Amp fuse, placed within the socket on the rear can be replaced by the user (10 Amp fuse for model T-650PH 110Vac). The fuse may blow due to a voltage spike in the mains or a calibrator component fault.