Model GW Instek GW-GOM-805
Milli-Ohm Meter - 50,000 Counts - Programmable - DC - Dry Circuit - Drive Modes
•3.5” (320 x 240) TFT LCD display
•High accuracy of 0.05% precision
•1 Amp test current, 1 µΩ resolution
•Fast measurement of 60 readings per second
•Four wire resistance measurement
•Temperature compensation measurement function
•20 sets of panel setting memory
•Dry circuit (GOM-805 only)
•Drive modes: DC+/DC-, Pulsed, PWM, Zero (GOM-805 only)
•Interface: USB device, RS-232C, Handler/Scan/EXT I/O, and GPIB
• Scope of Delivery:
GW Instek GW-GOM-800 Series Base Unit
GTL-308: Test lead
User Manual CD
• Optional Accessories (not included):
PT-100 Platinum Temperature Probe
GTL-232 RS-232Ccable 9-pin, F-F type, approx.2000mm
GTL-248 GPIB cable approx.2000mm
GTL-251 GPIB-USB-HS (High Speed) adaptor
GW Instek launches a new series of D.C. milliohm meter GOM-804/805, which abundantly feature 3.5-inch TFT display, maximum 50,000 counts measurement display, the rapid sampling rate of 60 readings per second, optimum 0.05% measurement precision, four wire measurement method as well as the temperature measurement and temperature compensation measurement function to meet the requirement of low resistance measurement application. The GOM-805 also includes various drive modes and Dry circuit for contact resistance measurement applications. More features, including 20 sets of panel setting memory and many external control interface such as RS-232C, USB, Handler/Scan/EXT IO or GPIB (option), greatly elevate GOM-804/805 milliohm meter’s convenience on practical applications.
GOM-804/805 adopt 3.5-inch color LCD to enhance the clarity of measurement results and to provide display for related setting criteria that tremendously brings up the completeness of test information. Additionally, GOM-804/805, with the optimum 0.05% precision, augment the measurement speed to 60 sampling rate per second and maintain the display digits of five instead of four despite of different speed selections. Furthermore, the independent functionality keys and direction keys together increase the operational convenience which allows users to complete their measurement tasks with intuitive convenience and speed.
GOM-805 provides Dry circuit and various drive modes (DC+, DC-, Pulsed, PWM) for measurement applications on different materials. The pulsed current output mode is suitable for interacting conductors of different materials and this output mode is to reduce the thermal EMF influence, which is caused by electric potential difference generated from different conductors acting on different temperatures while conducting low resistance measurements. The DC+ and DC- output modes are best for the measurement requirements of inductive components. The PWM output mode, ideal for changing temperature sensitive materials, can avoid resistance value variation which is due to over load happened on current measurement for a long period of time. When either the DC+, DC- or Pulsed drive is active; the Dry circuit can be applied simultaneously. Dry circuit can limit the applied voltage under the open circuit voltage of 20mV to avoid over voltage occurred on the both ends of components. The over voltage will damage the oxide coating and the thin layer of contact surface, as a result, the validity of measurement will then be ruined. For instance, contact resistance of connector measurement is one of the applications.
With respect to connecting the external control, GOM-804/805 provide a D-sub 25-pin combined interface to execute, according to the functionalities, Handler, Scan or EXT IO for respectively connecting to a sorting machine; connecting to an external on-off switch, and directly conducting external trigger control. For remote control and measurement result retrieval requirements, GOM-804/805 also provide various interface selections such as RS-232C, USB, and GPIB (GOM-804(option)/GOM-805(standard) interface. Furthermore, the control commands are compatible to that of GOM-802 that saves time in adjusting programs while switching from the old model to the new model.
To sum up, GOM-804 evolves from GOM-802 platform with more advanced functionalities and specifications, including display digits, measurement speed and standard interface (RS-232C/USB). With all the capabilities of GOM-804, GOM-805 augments itself with new measurement abilities (Dry circuit and various drive modes) to meet the requirements of broader low resistance measurement applications.
Founded in 1975, Good Will Instrument Co., Ltd was the first professional manufacturer in Taiwan specializing in electrical test & measurement instruments. GW Instek began as a manufacturer of power supplies and quickly expanded into the development of high precision electronic test and measurement instruments.
After decades of experience in the test and measurement industry, GW Instek has grown to become one of the important manufacturers and developers of test and measurement instruments worldwide. Today GW Instek has more than 300 product items, ranging from oscilloscopes, spectrum analyzers, signal sources, basic test & measurement instruments to video surveillance systems. GW Instek has also seen its present growth internationally. With headquarters located in Taipei, Taiwan, GW Instek has subsidiaries in mainland China, America, Japan, Korea, Malaysia, Europe, and India; its products are sold to more than 80 countries worldwide.
With a strong focus on high quality, economical measurement solutions for the educational and industrial manufacturing markets, Good Will Instrument has developed a solid brand image and reputation for reliability, integrity and innovation. From its inception, GW Instek has dedicated itself to becoming a professional electronic test and measurement designer and manufacturer, resulting in a number of national awards and the trust of customers world-wide; In 1993 Good Will Instrument became ISO 9002 accredited and the following year won the Highest Honor of National Outstanding SMEs (small and medium enterprises) Award from the Taiwanese Ministry of Economic Affairs. In 2000, Good Will Instrument went public on the Taiwan Stock Exchange.
GW Instek has been a byword for quality electronic test & measurement instruments due to its decades of experience in R&D, marketing and manufacturing. GW Instek's reputation has been built upon the philosophy of integrity, quality, and creativity as well as the accumulation of years of experience. Focusing on the improvement of R&D, manufacturing and marketing competitiveness, GW Instek will continue to be one of the most reliable, trusted brands creating the highest value for customers.