Isotech IDM 91E User manual

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INSTRUCTION MANUAL
IDM91E DIGITAL MULTIMETER
EN FR IT DE JP

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ISO - TECH IDM 91E
DIGITAL MULTIMETER
INSTRUCTION MANUAL

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WARNING
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID
ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE
OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.
TO AVOID ELECTRIC SHOCK, DISCONNECT MEASURING TERMINALS BEFORE OPENING ENCLOSURE.

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INTRODUCTION
1-1 Unpacking and Inspection
Upon removing your new Digital Multimeter from its packing, you should have the following items:
1. Digital Multimeter.
2. Test lead set (one black, one red).
3. Instruction Manual.
4. Protective holster.
1-2 Meter Safety
Terms marked on Equipment
ATTENTION — Refer to Manual.
DOUBLE INSULATION — Protection Class II.
DANGER — Risk of electric shock

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Symbols in this Manual
This symbol indicates where cautionary or other information is found in the manual.
Battery
1-3 Front Panel
Refer to Figure 1 and the following numbered steps to familiarize yourself with the meter's front panel controls and
connectors.
1. Digital Display — The digital display has a 3-1/2 LCD readout (maximum reading 1999) with automatic polarity,
overrange and low battery indicators.
2. Rotary Switch — Select the Function and Range desired.
3. COM Input Terminal — Ground input connector.
4. V Ω:Input Terminal — Positive input connector for Volts, Ohms and Diode.
5. mA µA Input Terminal — Positive input connector for mA and µA measurements (up to 200mA).
6. 10A Input Terminal — Positive input connector for Amp measurements (up to 10A).

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1 2 4 3 5 6
Figure 1

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SPECIFICATIONS
2-1 General Specifications
This instrument has been designed and tested in accordance with IEC Publication 1010 Pt 1, Class II, Safety Re-
quirements for Electrical Equipment for Measurement, Control and Laboratory Use. This level of safety can only be
guaranteed while the limits of section 2.2 are observed.
Display : 3-1/2 digit Liquid Crystal Display (LCD) with a maximum reading of 1999.
Polarity Indication : Automatic, positive implied, negative indicated.
Zero Adjustment : Automatic.
Overrange Indication : "1" or "-1".
Low Battery Indication: "" is displayed when the battery voltage drops below operating voltage.
Measuring Rate: 2.5 times per second, nominal.
Auto Power Off: Approx. 30 minutes.

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2-2 Environmental Conditions:
Maximum Altitude : 2000m
Installation Category : IEC 1010 600V CAT II 300V CAT III.
Pollution Degree : 2
Operating Temperature : 0°C to 50°C, 0 to 80% R.H.
Storage Temperature : -20°C to 60°C, 0 to 80% R.H when battery removed from meter.
Temperature Coefficient : 0.15 x (Specified accuracy) / °C, <18°C or >28°C.
Power Requirements : Alkaline 9V battery, NEDA 1604A, JIS 6AM6, IEC 6LF22.
Battery Life : Alkaline 300 hours.
Dimensions (WxHxD) : 84mm x 175mm x 31mm, without holster
95mm x 192 mm x 50 mm, with holster.
Weight (including battery) : 340 gms, without holster
550 gms, with holster.
Supplied Accessories : Protective Holster, Battery (installed) and Instruction Manual.

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2-3 Electrical Specifications
Accuracy is ± (% reading + number of digits) at 23°C ± 5°C, less than 75% R.H.
(1) DC Volts
Range Resolution Accuracy Over voltage
protection
200mV 100µV
±(0.5%reading + 1digit)
2V 1mV
20V 10mV
200V 100mV
600V 1V
600V d.c. or 600 V a.c. rms
Input Impedance : 10MΩ.