Prostat PWA-805 User manual

User Manual

PWA-805

WRIST STRAP AUDITOR FIXTURE

PROSTAT® PWA805 WRSIT STRAP AUDITOR FIXTURE

Secon Topic Page

I. Before Using the Instrument 4

II. Safery 4

III. Descripon 4

IV. Accuracy 5

V. Baery Installaon & General Maintenance 6

VI. Normal Operaons 7

VII. Funconally Tesng the PMT-872A 13

General Speciﬁcaons 17

Table of Contents

manual may be used or reproduced in any manner whatsoever without wrien permission. For informaon contact

Prostat Corporaon.

Prostat is the registered trademark of Prostat® Corporaon

4Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

I. Introducon

The Prostat PWA-805 Wrist Strap Auditor is designed to determine the condion of a wrist strap as-

sembly. Used with the PRS-801 or PRS-812 Resistance Meters, a resistance measurement can be made

of the full assembly cuﬀand cord, the cuﬀonly, or the cord only. This measurement will deﬁne the

operable condion of any standard wrist strap.

A. The PWA-805 unit approximates the basic electrical measurement requirements of the ANSI/ESD

S1.1 wrist strap standard.

B. The intent of the PWA-805 is to provide the ESD auditor with a convenient ﬁxture to measure the

exact resistance characteriscs of a wrist strap, rather than generally esmate its approximate

resistance range with an indicang checker.

C. The PWA-805 will provide the four following resistance measurements:

1. Resistance of a wrist strap from the inner, middle posion of the cuﬀto the end of the ground-

ing cord.

2. The resistance between two points on the inner surface of the cuﬀ

3. The resistance between two points on the outer surface of the cuﬀ

4. The resistance between the cord cuﬀsnap and ground connecon

II. Cauons & Warnings

A. As with any electrical device, use proper electrical precauons to avoid personnel shock.

1. The PWA-805 Wrist Strap Auditor ﬁxture operates with power input from the Resistance Meter

at 10 to 100 volts, and is capable of delivering an annoying shock to any person touching it.

2. Although the current capability is limited, a disnct HAZARD EXISTS in the person’s reacon to

the shock.

3. To avoid personnel shock, do not touch the can electrodes when power is applied to the ﬁxture

CAUTION

To avoid electrical shock, do not touch the ﬁxture’s

can electrodes when power is being applied.

B. The PWA-805 is designed to be used in audit environments at test voltages of 100 volts or less.

Exceeding 100 volts greatly enhances the risk of personnel shock hazards and may damage the

ﬁxture.

WARNING

Operaonal test voltages should not exceed

100 volts in the audit environment.

Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

C. DO NOT USE THE PWA-805 AUDITOR if it fails to pass its funconal test.

CAUTION

Should the Funconal connuity check indicate improper operaon of the ﬁx-

ture, OR the ﬁxture becomes damaged, do not use the PWA-805.

Contact Prostat Customer Service Department for further instrucons.

D. DO NOT USE THE PWA-805 AUDITOR if it becomes damaged in any way.

E. Only qualiﬁed instrument repair personnel should open terminal connecons or repair the PWA-

805 AUDITOR.

F. Do not store or use in damp environments

G. Always store the PWA-805 in its protecve case.

III. Equipment Inspecon & Inial Preparaon for Use

A. Basic Descripon

The PWA-805 Wrist Strap Auditor Fixture consists of two metal cylinder electrodes mounted on a

plasc base and wired to a switch, cord connecon points and meter input receptacles.

1. The metal cylinder (can) electrodes are used to mount wrist strap cuﬀs for connuity and resis-

tance measurements.

2. A YELLOW cord receptacle allows the wrist strap grounding cord to be plugged into the ﬁxture’s

test circuit.

3. Two meter input receptacles (RED and BLACK) are provided to connect the Resistance Meter

to the ﬁxture’s test circuit. The Resistance Meter provides all resistance measurements for the

PWA-805 Auditor.

4. Two male snap posts, one 7 mm and one 4 mm, are provided for mounng the cuﬀsnap end

of the grounding cord to the ﬁxture circuit during Cord Only measurements.

5. A three posion rocker switch (BLACK) allows resistance measurements of the following wrist

strap components:

a. The Cuﬀand Grounding Cord

b. The CuﬀOnly

c. The Grounding Cord Only

6Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

Figure 1: PWA-805 Layout

B. Funconal Test of the PWA-805 Wrist Strap Auditor Fixture

1. Funconal Connuity Test of the CUFF & CORD measurement funcon.

a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-

tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.

b. Plug an auxiliary test lead into the YELLOW CORD receptacle. Use a straight test lead

equipped with banana plugs. For ease of handling install an alligator clip on one end of the

test lead.

c. Select the CONTINUITY TEST posion on the Resistance Meter.

d. Touch the free end of the installed test lead to the PWA-805 adjustable can electrode (the

can on the right side of the ﬁxture equipped with a knurled, sloed locking screw).

e. Select the ﬁxture rocker switch middle posion, labeled CUFF & CORD.

Figure 2: PWA-805 Connuity Test of Cuﬀ& Cord Funcon

Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0

Ohms.

CAUTION

To avoid electrical shock, do not touch the ﬁxture,

can electrodes when power is being applied.

(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the CUFF & CORD

test funcon is acceptable. Proceed to the CORD ONLY funconal test.

(2) If the meter indicates “inﬁnity” or a high resistance check the rocker switch posion

and test lead connecons and repeat the connuity test.

(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.

Contact Prostat Customer Service.

2. Funconal Connuity Test of the CORD ONLY measurement funcon.

a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-

tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.

b. Plug an auxiliary test lead into the YELLOW CORD receptacle. Use a straight test lead

equipped with banana plugs. For ease of handling, install an alligator clip on one end of the

test lead.

c. Select the CONTINUITY TEST posion on the Resistance Meter.

d. Touch the free end of the installed test lead to the PWA-805 7 mm male CORD SNAP termi-

nal.

e. Select the ﬁxture rocker switch right posion, labeled CORD ONLY.

f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0

Ohms.

Figure 3: PWA-805 Connuity Test of Cord Only Funcon

8Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

CAUTION

To avoid electrical shock, do not touch the ﬁxture

can electrodes when power is being applied.

(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the 7 mm CORD

ONLY test funcon is acceptable. Proceed to the 4 mm CORD ONLY funconal test.

(2) If the meter indicates “inﬁnity” or a high resistance check the rocker switch posion

and test lead connecons and repeat the connuity test.

(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.

Contact Prostat Customer Service.

g. Touch the free end of the installed test lead to the PWA-805 4 mm male CORD SNAP termi-

nal.

h. Select the ﬁxture rocker switch right posion, labeled CORD ONLY.

i. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0

Ohms.

CAUTION

To avoid electrical shock, do not touch the ﬁxture

can electrodes when power is being applied.

(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the 4 mm CORD

ONLY test funcon is acceptable. Proceed to the CUFF ONLY funconal test.

(2) If the meter indicates “inﬁnity” or a high resistance check the rocker switch posion

and test lead connecons and repeat the connuity test.

(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.

Contact Prostat Customer Service.

3. Funconal Connuity Test of the CUFF ONLY measurement funcon.

a. Connect the test leads from the Resistance Meter to the PWA-805 Auditor METER recep-

tacles. NOTE: Prior to using the Resistance Meter, read the Operaons Manual.

b. Aach an auxiliary test lead to the adjustable can electrode (right side of the ﬁxture). Use a

straight test lead equipped with banana plugs and two alligator clip.

c. Select the CONTINUITY TEST posion on the Resistance Meter.

d. Touch the free end of the installed test lead to the PWA-805 ﬁxed can electrode (the can on

the leside of the ﬁxture).

e. Select the ﬁxture rocker switch leposion, labeled CUFF ONLY.

f. Push the TEST buon on the Resistance Meter. The Resistance Meter should indicate 0

Ohms.

Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

Figure 4: PWA-805 Connuity Test of CuﬀOnly Funcon

CAUTION

To avoid electrical shock, do not touch the ﬁxture

can electrodes when power is being applied.

(1) If the Resistance Meter indicates 0 Ohms, the connuity test for the CUFF ONLY test

funcon is acceptable, and all funconal tests are completed.

(2) If the meter indicates “inﬁnity” or a high resistance check the rocker switch posion

and test lead connecons and repeat the connuity test.

(3) If the Resistance Meter does not indicate 0 Ohms, do not use the PWA-805 Auditor.

Contact Prostat Customer Service.

IV. PWA-805 Wrist Strap Auditor Resistance Measurement Operaon

A. General

1. This operaon will provide the four following resistance measurements:

a. Resistance of a wrist strap from the inner surface, middle posion of the cuﬀto the end

of the grounding cord. This measurement indicates the maximum resistance between the

user and an ESD common ground point.

b. The resistance between two points on the inner surface of the cuﬀ. Properly used, this

measurement deﬁnes the connuity of the inner cuﬀ’s surface between 2 points, 180

apart.

(1) Thus, proper connecons of the cuﬀto the wrist buckle may be conﬁrmed.

(2) The connuity around the enre perimeter of the inner cuﬀsurface may be

conﬁrmed.

10 Rev. B / March 25, 2019

PWA-805 Wrist Strap Auditor Fixture

c. The resistance between two points on the outer surface of the cuﬀ. This measurement

conﬁrms the insulave characteriscs of the cuﬀs outer surface.

d. The resistance between the ground cord’s cuﬀsnap and its connecon to ground. This

measurement performs two funcons.

(1) It allows the operator to check the ground cord for “opens”

(2) It measures the total resistance of the ground cord conductor resistor and

connecon points.

2. The following procedures require the use of the Resistance Meter. Be sure to read its Opera-

ons Manual and perform its Funconal Test prior to using.

B. Resistance Measurement of a wrist strap assembly CUFF & CORD.

1. Connect the test leads from the Resistance Meter to the PWA-805 Auditor RED and BLACK

METER receptacles.

2. Place the rocker switch in the middle CUFF & CORD posion

IMPORTANT OPERATIONAL NOTE

The LEFT can electrode in the CUFF & CORD measurement Mode is used to hold the cuﬀme-

chanically; it is not in the measurement circuit. The RIGHT can electrode is in the measure-

ment circuit. Consequently, the inner cuﬀsurface must contact the

RIGHT can electrode to obtain an accurate measurement.

3. Mount the wrist strap cuﬀto the PWA-805 ﬁxture as follows:

a. Loosen the adjustable RIGHT can electrode and slide it toward the LEFT can electrode.

b. Posion the inner surface of the cuﬀbuckle against the LEFT can electrode and hold it

ﬁrmly in posion with your lehand.

c. With your right hand, stretch the cuﬀover and onto the adjustable RIGHT can electrode.

d. Slide the adjustable RIGHT can electrode toward the right side of the ﬁxture unl there are

1 to 2 pounds of tension on the wrist strap cuﬀ.

e. Tighten the RIGHT can electrodes locking screw.

4. Plug the wrist strap’s ground cord banana plug into the YELLOW CORD receptacle.

5. The wrist strap is now mounted on the PWA-80S ﬁxture. Be sure:

a. The cuﬀis posioned smoothly on the sides of the two can electrodes

b. The ground cord is properly aached to the cuﬀbuckle

c. The ground cord banana plug is fully inserted into the YELLOW CORD receptacle.

6. Select the 10 volt posion on the Resistance Meter and push the TEST buon to obtain a resis-

tance measurement.

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