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NAG/IM/MTC350/01/22

TROUBLESHOOTING / MAINTENANCE



The calibration instrument has been designed with

ease of operation and simplicity of maintenance.



Proper care of the instrument requires very little

maintenance.



If the outside of the instrument becomes soiled, it

may be wiped clean with a damp cloth and mild

detergent. Do not use harsh chemicals on the surface

which may damage the paint.



It is important to keep the thermo well of the

calibrator clean and clear of any foreign matter. Do

not use fluid to clean out the thermo well.



If a hazardous / flammable or any material particle

spilt on or inside the equipment, the user is

responsible for taking the suitable steps to clean the

equipment.

Replacing the Fuse



Locate the main fuse in the fuse box in the socket.



Open the lid of the fuse box using a screw driver.



Replace the fuse with the same rating.

Содержание MTC 350

Страница 1: ...Low Temperature DRY BLOCK CALIBRATOR MTC 350 ...

Страница 2: ...ince 1972 serving Industries in India Worldwide thro the Manufacture Supply of World Class Calibration Instruments Systems like Temperature Pressure Signal Calibrators Black Body Calibration Sources Pneumatic Hydraulic Hand Pumps Dead Weight Comparison Testers Calibration Test Benches etc ...

Страница 3: ... feedback to correct any errors noticed and to improve the quality of contents of this Manual Specifications are subject to change owing to continuous development and we reserve rights to effect Changes Modifications to this Manual Read the Instructions before starting to use the Product Wishing you for a long association with us For any service related issues please contact service nagman com VER...

Страница 4: ...ription Page No 1 Introduction 5 2 Specification 6 3 Standard Delivery Optional Accessories 9 4 Parts Identification with Picture 10 5 Connection Diagram 17 6 Safety Instructions 18 7 Operating Instruction 24 8 Troubleshooting Maintenance 28 ...

Страница 5: ...alibration of temperature sensors Heater Block The Block is made up of Aluminium and provides a relatively constant and accurate temperature environment A thermo well is provided that may be used for sensors of that size or may be sleeved down with various sized multi hole probe sleeves Heaters embedded in the block assembly provide uniform heat to the sensor A high temperature platinum RTD is emb...

Страница 6: ...0 Minutes approx Cooling Time Max to 100 C 33 Minutes approx Switch Test facility Provided Interchangeable Thermowells Single hole to suit 1 4 1 2 Probes Housing Mounting Bench top Power Supply 230V AC 50 Hz Instrument Dimensions L x D x H 160 x 365 x 350 mm Instrument Weight 8 Kg approx Measurement Capability Thermocouples ISA Types J K R S N B T RTD Pt100 IEC Std mA 0 to 25 mA mV 0 to 100 1000 m...

Страница 7: ... mA 0 to 25 0 001 0 05 F S Ohms 0 to 500 0 01 0 05 F S KOhms 0 to 3 5 0 0001 0 05 F S RTD Pt100 100 to 800 0 1 0 05 F S Type Range Resolution Accuracy TC Type J 100 to 1200 0 1 0 1 F S TC Type K 60 to 1260 0 1 0 1 F S TC Type R 150 to 1700 0 1 0 1 F S TC Type S 170 to 1700 0 1 0 1 F S TC Type N 0 to 1300 0 1 0 1 F S TC Type B 920 to 1820 0 1 0 1 F S TC Type T 0 to 400 0 1 0 1 F S ...

Страница 8: ...xcessively dusty dirty environment and explosive zones The instrument operates safely under the following conditions Operating temperature 23 2 C Storage Temperature 20 C to 40 C Ambient relative humidity 15 50 Mains voltage within 10 of nominal Minimum vibrations in the calibration environment ...

Страница 9: ...bration Certificate Instruction Manual Carrying Case Optional Accessories Additional Single hole Insert Maximum 15 mm Additional Thermowells Insertion Tubes to choose from Single hole standard sizes to suit 1 8 1 4 3 8 1 2 3 4 3 4 5 6 7 8 10 12 13 15 17 19 21 mm probes Multihole Typical 1x6 1x8 or 3x6 or 1x10 1x4 mm Power Supply 110 VAC 60 Hz Calibration Certificates are issued in Accordance with ...

Страница 10: ...NAG IM MTC350 01 22 10 4 PARTS IDENTIFICATION Heater Block Keypad Display PC Interface Connector Front Panel ...

Страница 11: ...NAG IM MTC350 01 22 11 Input for Switch Test PC Interface Connector Input for RTD TC mA Voltage Test Power Inlet Socket ...

Страница 12: ...witch Test Connection details are shown below Select menu option in keypad press upward key the display shows in 1 Switch test 2 Edit date time Enter Numeric key 1 Computer Interface To interface with Computer USB Switch Test READ 50 OPEN CLOSE 50 ...

Страница 13: ...The RTD Input Connection details are shown below 2 Wire Use terminals BC for 2 wire with A B and C D to be short 3 Wire Use terminals A B C for 3 wire with C D to be short 4 Wire Directly insert to A B C D Thermocouple For all TC B for Positive and C for Negative mA ...

Страница 14: ...or Positive and B for Negative Active Loop Transmitter with External Power Supply B for Positive and C for Negative Voltage B for Positive and C for Negative Note that this connection is for potential free contact Power Inlet Socket Input Supply 230V AC 50 Hz Standard 110V AC 60 Hz Optional ...

Страница 15: ...pwards Downward KEYS 5 STR KEY Store key used to store the input values Max 10 values 6 C F KEY used to select the units 7 RCL KEY Recall key used to recall the stored input values using increment and decrement 9 PGM KEY used to manually add Thermocouple Cj external temperature 10 ENTER KEY used to accept selected options or entered values 11 CE KEY escape key used to cancel a selection edit or re...

Страница 16: ...The Display is divided into four separate segments 1st line indicates the set Temperature 2nd line indicates the Read Temperature 3rd line indicates the Input value eg mVL mVH Volts etc 4th line indicates switch status and parameters ...

Страница 17: ...NAG IM MTC350 01 22 17 5 CONNECTION DIAGRAM Temperature Sensor UUT Measuring Instrument for UUT MTC 350 Dry Block Calibrator ...

Страница 18: ...ad the user manual before operating the instrument 2 Warning conditions that may pose hazards to the user 3 Caution conditions that may damage the instrument 4 Special Information 5 Hot surface areas which are at high temperature 6 Electric shock condition that may pose shock to the user ...

Страница 19: ...be sheath into the thermo well It may cause a shock to the sensor and affect the calibration Do not operate this instrument in an excessively wet oily dusty or dirty environment and explosive zones Do not leave the inserts in the instrument for prolonged periods It may cause damage due to high operating temperature of the instrument Do not operate near flammable materials Calibration Equipment sho...

Страница 20: ...nstrument at room temperature at 23 2 C Allow sufficient air circulation for the instrument by leaving at least 6 inches 15cm of clearance around the instrument Do not turn off the instrument at temperatures higher than 100 C This would create a hazardous situation Select a set point less than 100 C preferably close to the ambient temperature and allow the Instrument to cool before it turning OFF ...

Страница 21: ...ondition Storing Switch OFF the calibrator using the power control switch If you intend to store the calibrator in the Packing Box after use you must ensure that the instrument has cooled to a temperature at least close to 10 C 50 F ambient temperature before placing it in the Packing Box Transporting The Inserts must be removed to avoid damage to the instrument if the calibrator is to be transpor...

Страница 22: ...well or the Insert while the calibrator is heating up they may be very hot Do not touch the tip of the sensor when it is removed from the Insert thermo well it may be very hot Do not touch the well access surface of the instrument Do not touch the handle of the calibrator during use it may be hot ...

Страница 23: ... a properly grounded three pin socket The receptacle must be installed in accordance with local codes and ordinances Do not use an extension cord or adapter plug Always replace the power cord with an approved cord of correct rating and type If supplied with user accessible fuses always replace the fuse with one of the same rating voltage and type If a main power supply fluctuation occurs immediate...

Страница 24: ... the sensor to be calibrated The fan should begin quietly blowing air through the instrument after the illumination of controller display Switch on the calibrator Wait until the self diagnostic routines are finished Display shows SET as 0 C and READ as Room Temperature Insert the sensor RTD or T C into the insert in the heating thermo well Select the required parameters by pressing SELECT option i...

Страница 25: ...0 minutes a beep audio signal will be heard and a tick mark will appear in the display This indicates that you have achieved the stable thermo well temperature Now you can take the readings Connect the RTD probes to the corresponding terminals loop supply in the front plate of the instrument Display shows the bath temperature as the INPUT parameter which corresponds to the READ temperature Note If...

Страница 26: ... the front panel of the calibrator The display will show the transmitter s output signal in mA Compare the SET temperature and the output signal of the transmitter Connection of active 2 wire mA transmitter with external power supply Press Select key and select mA parameter using the numeric keys 1 9 Place the 2 wire transmitter into a correct sized insert in the heating thermo well and set the de...

Страница 27: ...ed insert in the heating thermo well and set the desired calibration temperature Press select key then up arrow Enter numeric key 1 Test of thermostat switch point Switch calibrator ON Place the thermostat into a correct sized insert in the heating thermo well Ensure that thermostat is not connected to any other voltage supply Connect terminals of thermostat correctly to calibrator switch test poi...

Страница 28: ...not use harsh chemicals on the surface which may damage the paint It is important to keep the thermo well of the calibrator clean and clear of any foreign matter Do not use fluid to clean out the thermo well If a hazardous flammable or any material particle spilt on or inside the equipment the user is responsible for taking the suitable steps to clean the equipment Replacing the Fuse Locate the ma...

Страница 29: ...he display Fuse Open Check the fuse if defective replace the fuse of same rating 2 Read value shows OVLD Over load Check the load on the unit Sensor Open Contact Customer Service 3 Fan not working No Supply to Fan Check the fan power supply voltage Fan defect Replace the fan 4 Equipment not cooling enough Peltier defect Contact Customer Service 5 Display shows EEPROM error RAM Problem Contact Cust...

Страница 30: ...ms faced for clear analysis of the problem The calibrator should be returned in the original packing Nagman s liability ceases if Parts are replaced repaired using spare parts which are not identical to those recommended by the manufacturer Nagman s liability is restricted to errors that originated from the factory For more details write to NAGMAN INSTRUMENTS AND ELECTRONICS PRIVATE LIMITED 170 1a...

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