MS 300 SERIES METER
Contents
1. 40 20 600V CAT M 20 40 Pm 80 30 MS303 GALVANOMETER FR NN 2 REFERENCE CONDITIONS Temperature 23 C 2 C Humidity 45 RH 5 Position horizontal 2 Ensure that the pointer is at zero before starting any measurements Zero adjustment open the device Mechanical zero adjustment is carried out by turning the screw on the back of the null meter Ensure that the switch is correctly positioned When an estimated measurement is unknown place the switch at the highest caliber and then gradually reduce it until the appropriate caliber is achieved the reading should preferably be in the upper 2 3 of the range 3 SPECIFICATIONS 3 1 DC VOLTAGE AND CURRENT Connect the leads to the galvanometer be careful of switch position see below and connect to the circuit to be controlled When an estimated measurement is unknown place the switch at the highest caliber and then gradually reduce it until the appropriate caliber is achieved To obtain voltage in V multiply the appropriate range value by the reading coefficient indicated in the table Reading coefficient Accuracy Protection Fuse 200mA 500V 4 GENERAL CHARACTERISTICS 4 1 Dimensions and weight Dimensions 160x105x50mm Weight 670g 4 2 Maximum climatic conditions Temperature use 10 C to 50 C storage 30 C to 70 C Relative humidity use lt 80 HR Altitude use lt 2000m 4 3 Complia2. MS 300 SERIES METER USER S MANUAL Safety Meaning of symbol UN CAUTION Please consult the operating instructions before using the device In these operating instructions failure to follow or carry out instructions preceded by this symbol may result in personal injury or damage to the device and the installations Meaning of symbol This appliance is protected by double insulation or reinforced insulation It does not have to be connected to an earth protection terminal for electrical safety Thank you for purchasing this MS303 galvanometer To obtain the best service from your unit Read these operating instructions carefully Comply with the precautions for use 2 PRECAUTIONS FOR USE O Never use on a voltage network over 600V with respect to the earth connection This voltage surge category III galvanometer complies with stringent reliability and availability requirements corresponding to fixed industrial and domestic installations see IEC 664 1 Do not use on alternative and continuous voltages gt 600V O Indoor use in environments with a maximum pollution level of 2 EN 50419 2006 temperature of 10 C to 50 C and relative humidity below 90 O Respect value and type of the fuses to avoid damaging the instrument and canceling the warranty O Fuse 500V 0 5A Use accessories corresponding to safety standards EN 61010 1 2001 with 600V minimum voltage and surge category III O
3. nce with international standards Electrical safety EN 61010 1 2001 CEI 1010 1 EN61010 NF C 42020 VDE 0411 Double insulation Pollution level 2 Installation category III according to CEI 664 Allocated voltage 600V 4 4 Electromagnetic compatibility O Emission EN 61326 1 2006 O Immunity EN 61326 1 2006 Maximum influence in the presence of conducted radio frequencies 3 times the accuracy class 1f the length of the measured circuit 15 gt 3m 5 SUPPLY To order MS303 Delivery galvanometer user s manual 6 MAINTENANCE Only use the specified spare parts for maintenance The manufacturer shall not be held liable for any incident occurring following repairs carried out by a party other than its after sales service or approved repairers 6 1 Fuse change Open the device Use the same type of fuses to ensure the safety of users and of the device Fuse 500V 0 5A 6 2 Cleaning The galvanometer must be disconnected from all electricity sources To clean the casing use a cloth dampened with soapy water Wipe over with a damp cloth Dry quickly with a dry cloth or forced air
4. o Before any measurement ensure correct positioning of the leads on the galvanometer and of the switch When the value range of a measurement is not known place the switch at the highest caliber and then gradually reduce it until the appropriate caliber 1s achieved the reading should preferably be in the upper 2 3 of the range O Never measure resistances on a live circuit During current intensity measurements without a clip on galvanometer stop circuit power supply before connecting or disconnecting the galvanometer or changing caliber The leads must be disconnected to open the lower half of the galvanometer case O Never connect to the circuit to be measured if the casing is not properly closed CONTENTS AD AA o mihi ZE TOTENS SOMO OMS cae see sas ai eae ajo io See ici ee es Ge o LC A Uno IA iatrsme ral Character Sto Ss ras is Gui ted tn arte eg Sate BAe ad one tees daa 6 1424166 A TC OO IAS 1 DESCRIPTION The MS303 galvanometer 1s for everyday use by electricity professionals It offers the following functions Galvanometer current measurement Voltmeter voltage measurement only 100mV 1 1 Safety terminals 4mm e common terminal receiving the black lead 1 O mA HA for Apc calibers and mV for using a clamp 2 1 2 2 range dial 3 2 black with anti parallaxe mirror for Apc and 1 3 Function selection switch 4
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