Description
OTOVON® Surface Resistivity Meter – Z203
PRODUCT# Z203
Description
Surface Resistivity and Surface to Ground can be conveniently measured in accordance with Standard D257.
In the circuit industry, products such as packaging materials, component storage bags and trays, work bench surfaces, table and floor mats, conveyor belts, etc., have resistance values which need to conform to stringent specifications and fall within specified limits.
Surface resistivity meter can play a vital role in monitoring and checking the resistivity characteristics of the above items.
Colour-coded LEDs conveniently indicate Conductive, Dissipative and Insulative values from 103 - 1013 Ω/square.
Following Table Shows the Reading and Light Colour on the Tester
|
Surface |
Light |
Surface Resistivity (Ω/square) |
Result |
||
|
Conductive |
Green |
<105 |
ESD |
Antistatic |
|
|
Static Dissipative |
Yellow |
105 - 3.5 x 107 |
|||
|
106 - 1011 |
|||||
|
Insulative |
Red |
1012 - 1013 |
Non-ESD |
||
|
Specifications |
|
|
PRODUCT# |
Z203 |
|
MFN# |
Z203 |
|
Measurement Range |
103 - 1013 Ω/square |
|
Measurement Accuracy |
Half-decade |
|
Resolution |
One-decade |
|
Excitation Voltage |
9 V |
|
Indication |
By colour-coded LEDs |
|
Power Supply |
9 V DC Battery |
|
Low Battery |
Warning at 7.5 V |
|
Conformance |
D257 |
|
Traceability |
To National Standards |
|
Accessories Included |
1 m Grounding Cord Carrying Case |
|
Dimensions |
135 mm (L) x 70 mm (W) x 25 mm (H) |
|
Weight |
150 g |
|
Warranty |
12 Months* |
Testing Method
1. Power the instrument for use by opening the back cover to install a 9 V battery.
2. For Surface Resistivity Measurement
Place the instrument on any surface which has to be tested so that the two sensor electrodes at the bottom of the instrument are in proper contact with the surface and gently press the TEST button on the instrument.
The LED which lights up directly gives the surface resistance in Ω/square.
3. For Surface to Ground Measurement
Insert the cord supplied with the instrument into the Ground socket on the instrument and connect the other end of the cord to any convenient ground point e.g., Floor mat.
Place the meter on the surface to be checked for surface to ground resistance. Next, as usual, press the TEST button and take the resistance reading in Ohms directly from the LED display.
Important Note
1. If the ambient air is humid (like in the rainy season), the instrument may not indicate beyond 1012 Ω/square, even when it is not placed on any surface. This is because of the traces of moisture condensing in the instrument body, thereby forming a conductive path between the sensor electrodes. In such conditions, reliable readings can be obtained only if measurements are taken in a humidity-controlled chamber.
2. Because of the ultra-high sensitivity of the instrument, the user is cautioned that when measuring high resistances (109Ω/square or greater) external electrostatic and electromagnetic fields may adversely affect its performances and may lead to erroneous reading. When making measurements in this range, it is recommended that the operator step away from the test setup during the measurement time. Similar precautions should be taken to ensure that there is no electrical device or wiring within about 75 cm of the instrument while measurements are being taken.
Maintenance
Apart from routine battery replacement, as and when indicated by low battery indication, this instrument is designed to be completely maintenance free.
Before taking any measurements, ensure that the surface to be tested and the bottom of the instrument including sensor electrodes are clean because any dust or contaminates on either surface will lead to erroneous reading.
*Warranty: Applicable from the date of invoice. Repair warranty only for the instrument. Forward-Reverse transportation cost from our office, India will be paid by purchaser of the equipment. Warranty voids in case of liquid damage, physical damage and/or if warranty seal is voided off.