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The ruggedly designed digital micro-ohmmeter, the DO7, is a veritable workhores, ideal for use in the workshop, field or test facilities. Sealed in an ABS plastic case, the DO7 has built in rechargeable batteries which allow one hour's continuous use on the lowest ranges, and up to 20 hours on the others.
The DO7 is ideal for a range of resistance measurements in cluding:
Rotating machines Switch contacts Electrical connectors Crimped joints PCB track Cable Joints |
Earth bonding Small transformer windings Heating elements Quality of wrapped joints Quality of solder joints Cable Lengths |
Technical Data
This portable Digital Ohmmeter is a practical instrument for low resistance measurement, ideal for use in the workshop, field or test facilities. It is of rugged construction, contained in a sealed ABS plastic case with lid and carrying handle.
The DO7 has many advanced features, including protection up to 415 volts rms at the measuring terminals, digital calibration and long scale length 6000 count. Rechargeable batteries means real portability with more than 1 hour's continuous operation on the lowest ranges and 20 hours on all others.
Battery charge indicators are provided. The internal charger will boost charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.
A front panel soket provides a serial RS232 output for connection to an external printer or PC, and a socket is also provided for the connection of an external start switch, eg. a foot switch
The DO7 is supplied ready for use with batteries, mains cord and test leads - no extras are normally necessary, For special lead sets we offer a variety of different styles which are listed in this leaflet, together with calibration standards.
Range
|
Resltn.
|
Typical Current
|
Uncertainty @ 20°C ±5°C, 1 year
|
Temperature Coefficient / °C
|
60 Ω
6 Ω 600 mΩ 60 mΩ 6 mΩ 600 µΩ |
10 mΩ
1 mΩ 100 µΩ 10 µΩ 1 µΩ 0.1 µΩ |
1 mA
10 mA 100 mA 1 A 10 A 10 A |
±(0.15% Rdg + 0.05% FS)
±(0.15% Rdg + 0.05% FS) ±(0.15% Rdg + 0.05% FS) ±(0.15% Rdg + 0.05% FS) ±(0.2% Rdg + 0.1% FS) ±(0.2% Rdg + 0.2% FS) |
40 ppm Rdg + 30 ppm FS
40 ppm Rdg + 30 ppm FS 40 ppm Rdg + 30 ppm FS 40 ppm Rdg + 30 ppm FS 40 ppm Rdg + 30 ppm FS 40 ppm Rdg + 250 ppm FS |
Measurement
4 Terminal Kelvin/Thomson principle eliminates error due to lead resistance. Open circuit measurement voltage, ~2V dc.
Display
0.8" LED 6000 count with automatic decimal point and polarity indication.
Ranges
6 Push button selected with LED indication.
Calibration
Digital, security key protected.
Protection
415 rms maximum at in put terminals.
Battery
Sealed lead acid, rechargeable cells giving a minimum of 1 hour's continuous measurement on the lowest 10 amp renges and 20 hours on all other ranges. Internal charger with battery state indicator.
Terminals
6mm binding posts accept spade tags and 4mm banana plugs.
Working Temp
0... 40°C rel. humidity 80% max. non-condensing.
Storage Temp
-20... + 50°C
Mains Supply
100/120/220/240/ Volts + 10% -13% 47... 63Hz. max 80VA
Safety
IEC 348 Protective Class 1.
Dimensions
343 x 327 x 152 mm (W x D x H)
Mass
8kg approx.
Accessories
Supplied complete with mains cord, measuring leads with Kelvin Clips, handbook, and certificate of conformity.
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External Start Foot Switch (FS01) Foot switch with 2 metre connection lead for connection to the external start socket. |
Portable printer (PR01) Portable thermal printer with rechargeable batteries, supplied complete with connection cable. | ![]() |
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Additional Lead Sets LS01 Duplex lead set with 3 metre lead length. LS02 Duplex lead set with 3 metre lead and 15 metre lead length. LS03 Large Crocodile style Kelvin clips with 3 metre lead length. LS04 Large crocodile style Kelvin clips with 3 metre lead and 15 metre lead lengths. |
Registration Date | 2004/05/21(Year/Month/Date) |
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Buyer / Seller in EC21 | Seller |
Business Type | Manufacturer |
Year established | 1997 |
Employees total | 6 - 10 |
Annual revenue | USD 500,001 - 1,000,000 |
Company | YJS Tech Co., Ltd. Registration No.128-81-27456 |
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Address | #64-4 Pulmugol-ro Paju-siGyeonggi-do108489Korea |
Phone | 82 - 31 - 9585848 |
Fax | 82 - 31 - 9436718 |
Homepage | www.yjstec.com |
Contact | Shin-Hyung, Lee / President |