ANSI/SP15.1:2005 pdf download.In-Use Resistance Testing of Gloves and Finger Cots.
Electrical hazard reduction practices should be exercised and proper grounding instructions for equipment should be followed.
5.0 EQUIPMENT
5.1 A wrist strap with a ground cord containing an integral one megohm resistor.
Since an integral one megohm resistor is included in series with the wrist strap, the actual lower limit foi’ the resistance measurement using this ground cord will be in me single-digit megohm range. The integral one megohm resistor should be verified using the test method described in
ANSL’ESD S1.1.
5.2 A wrist strap with a ground cord that does not contain an integral one rnegohm resistor.
5.3 Low Resistance Meter
A DC ohmmeter shall be used for gloves that have intrinsic or in-use resistances less than
1.0 x 10e ohms. 11w DC ohmmeter shall be capable of measuring a DC resistance of 0.1 ohm
through 10 megohms ± 10% with an open circuit voltage greater than 1.5 volts and less than
10 volts.
5.4 HIgh ResIstance Meter
5.4.1 The meter shall have an output voltage of 100 volts (± 5%) while under load for measurements of 1.0 x ohms and above, and 10 volts (± 5%) while under load br measurements less than 1.0 x 10 ohms.
5.4.2 The meter must be capable of making measurements from 1.0 x 101 ohms (± 10% accuracy) to 1.0 x 1011 ohms (± 10% accuracy). A power supply and ammeter, or an integrated instrument that combines those functions may be used.
5.5 Constant Area and Force Electrode (CAFE)
The electrode design. inatenals. and specifications are shown in Figure 1
6.0 MATERIAL TESTING
6.1 Sample Size
Six specimens of each glove or finger cot type are required for this test procedure.
6.2 Sample Preparation
6.2.1 Standard test conditions for this testing will be 23 ± 3°C. 12% ± 3% RH. and
50% ±5% RH.
6.2.2 The samples shall be conditioned at the standard conditions for 48 hours minimum.
6.3 Surface and Volume Resistance Measurements of Glove Material
The resistance of glove material shall be conditioned and tested using ANSLESD STM11.11 Surface Resistance Measurement, and ANSIESD STMI 1.12, Volume Resistance Measurement at the two humidity conditions listed in Section 6.2.1.
6.4 Two-Point Resistance Measurements of Finger Cot Material
The resistance of finger cot material shall be conditioned and tested using Two-Point Resistance
ANSI/ESD STM1 1.13 at the two humidity conditions listed Wi Section 6.2.1 –
6.5 Baseline Resistance Measurement of Operator
The baseline resistance measurement is made with an ungloved operator. The reading verifies the functionahty of the test system and establishes the minimum resistance of the operator only. AU in-use testing should be performed at environmental conditions similar to those in which the gloves will be used.
6.5.1 This measurement shall be performed using the DC ohmmeter as specified in Section 5.3.
6.5.2 Select the test subecVs hand of preference that will eventually be used to wear the gloveftlnger cot. Select the thumb and/or finger(s) to be tested. Attach the wristband to the wrist of that hand. Attach the ground cord without the one meophm resistor to one Input of the resistance meter, Ensure that the wristband makes a good connection with the skin, An appropriate lotion may be used to assure a good connection. If a lotion is used, use care not to contaminate the glovesitinger cots during subsequent tests.
6.5.3 Attach the Constant Area and Force Electrode (CAFE) via the banana jack to the other input of the resistance meter. See Figure 2.
6.5.4 Balance the CAFE on the fingerprint side of the thumb or first finger of choice of the hand that has the wrist strap connected to it. See Figure 2.
6.5.5 Record the resistance measurement between the electrode on the bare finger and the wrist strap after 15 seconds electrification time. Repeat the test on any other digit that is selected for testing.
6.5.6 Clean the electTode (CAFE) with isopropyl alcohol prior to performing the following steps.
6.6 Low Voltage System Resistance Test (Less than 1.0 x 10’ ohms)
6.6.1 This resistance shall be measured first using an ohmmeter as specified in Section 5.3.
6.62 Attach the wristband to the hand that will wear the glove. Attach the wrist strap cord
without the one mepohm resistor to one lead of the ohmmeter. Ensure that the wristband makes
a good connection with the skin.
6.6.3 Attach the (CAFE) to the other lead of the ohmmeter. See Figure 2.
6.6.4 Wear the glove and wait a minimum of 15 seconds to begin the electrical testing.
6.6.5 Balance the CAFE on the fingerprint side of the thumb or first finger of choice of the hand wearing the glove. See Figure 2.
