Tinker & Rasor PRM User Manual

CORROSION MITIGATION INSTRUMENTATION

P. O. BOX 1667 SAN BERNARDINO, CA 92402 TEL: [phone] FAX: [phone]

PRODUCT INSTRUCTIONS

MODEL PRM PEAK READING VOLTMETER

Use with Tinker & Rasor Models High Voltage Holiday Detectors

IMPORTANT NOTE: Do not use this instrument in an explosive environment.

UPDATE INFORMATION: The Model PRM has been updated for better performance when
used with T&R Models APS and AP/W with integrated voltmeter LCD displays, starting with
serial number 1177. Previously built units may be sent to the factory for update evaluation.

1. The Tinker & Rasor Model PRM Peak Reading Voltmeter is designed to measure the peak value of
high voltage pulses within its scale range, with a maximum capacity of 40 kilovolts. Voltage
measurements can be made of peak values with a rise time of less than one millionth of a second.

2. The Tinker & Rasor Model PRM Peak Reading Voltmeter consist of:

1 - Voltmeter
1 - Ground Cable
1 - High Voltage Cable with Red Clamp

3. Unpacking

Check all components against the packing list. If damage has occurred in shipment, file a claim with

the carrier immediately. If it is necessary to contact your supplier or the manufacturer concerning
damaged or missing items, be sure to include all the information such as serial number, purchase
order number and invoice number. This will ensure you of obtaining proper and expeditious service.

4. Description

The Model PRM is a portable, battery powered, voltmeter capable of accurately measuring pulse type

high voltages such as those generated by the “so called” spark type Holiday Detector and clearly

recognizing the values of either polarity.

Equipped with large five-digit liquid crystal display and single control switch for selecting proper polarity

and testing of self-contained power supply.
The cables supplied with the meter are well insulated for the proper use in measuring high voltages,

however, care should be exercised not to physically hold or touch these cables or connections while
the high voltage potential is present. Also, cables should not rest on each other or be placed on
conductive surface while making voltage measurements.

Always observe proper safety precautions when operating high voltage

equipment.

5. Voltage Testing Procedures

Web: www.tinker-rasor.com E-mail: [e-mail]

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CORROSION MITIGATION INSTRUMENTATION

P. O. BOX 1667 SAN BERNARDINO, CA 92402 TEL: [phone] FAX: [phone]

PRODUCT INSTRUCTIONS

A. Connect one of the two high tension cables, supplied with the voltmeter, between the dome top

terminal of voltmeter and the high voltage output of the Holiday Detector.

B. Connect the other high tension cable between the ground post of the voltmeter and the ground

terminal of the Holiday Detector.
C. After properly connecting cables (see note below) turn Holiday Detector “ON”.
D. Turn the control knob on the voltmeter to the positive (+) position and observe the meter reading.

If the meter reading does not closely correspond to the factory markings of the Holiday Detector,

turn the control knob to the negative (-) position. The meter reading must be within 10% of the

factory markings on the Holiday Detector in one or the other polarities, otherwise there is a fault

in one or both instruments.

Note: It may be necessary to use the cables supplied with the Holiday Detector in conjunction

with those supplied with the Voltmeter, because the terminals vary on different Holiday
Detectors. For example: Connections can be made directly to the ground wire and
high voltage cable of the Holiday Detector to facilitate proper electrical connections.

6. Battery Test
Turn control knob to “Bat.” position. Battery should read minimum of 6.0 volts. Replace if needed with

fresh batteries, 6 each 1-1/2 volt “AA” Cell Batteries. Do not store Voltmeter with batteries in place for
long periods of time.

7. Battery Replacement (See Photo Illustration Below)

1. Make sure the PRM is off.

2. Remove the two screws on the face plate with a Phillips-head screwdriver.

3. Pry open the face plate, and be mindful with the wires connected to the face plate.

4. Remove the Velcro strap to remove the battery holder.

5. Replace the (6) AA cell batteries. T&R #010-002

6. Repeat the steps in reverse to restore the PRM to operation order.

Web: www.tinker-rasor.com E-mail: [e-mail]

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