1.UNPACKING

Check all components against 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 concerningdamaged or missing items, be sure to include all the information, suchas serial number, purchase order number, and invoice number. This willassure you of obtaining proper and expeditious service. 
 
 

2.PREPARATION OF HALF-CELL

Please note that in most cases the half-cellis shipped dry, and must be properly charged with distilled water beforeoperation. 
 
 

3.OPERATION WITH HALF-CELL ELECTRODE ATTACHED

A. Remove protective vinyl cover from endof half-cell electrode. 

B. Place ceramic end of half-cell in contactwith moist earth. 

C. Connect test lead from negative terminalon instrument to the structure. 

D. Observe and record meter reading. Note:No switch to push for taking reading once the 
     voltmeter hasbeen turned on. 
 

4. DIFFERENCES BETWEEN METHODS OF CONNECTION

The Model CPV-4 has a connection for the halfcell to screw into the back of the voltmeter. When using this option, the halfcell is connected to the Positive (+) side of the voltmeter. A test lead is thenconnected between the Negative (-) post of the voltmeter and the structure.

Thissetup is used by many companies and technicians, as a "good" read, forinstance 0.85v, is displayed as a positive number. Many companies andtechnicians like to use positive numbers in recording reads. Also, an analogmeter will not display a negative reading, so companies or technicians who haveboth digital and analog meters have standardized using this method.

However, there are some groups that teach adifferent connection method. NACE International and Peabody's Control ofPipeline Corrosion, for example, both suggest connecting the Negative (-)terminal to the half cell, and the Positive (+) to the structure. This wouldthen change the polarity of the reading, so that the same reading as given inthe previous example, would then be displayed as -0.85v. 

Toconnect the Model CPV-4 CP Voltmeter using the NACE / Peabody method, do notscrew the half cell into the voltmeter. Use both lead cables provided,connecting the Red (+) cable between the structure and the Positive (+) terminalon the voltmeter,  and the Black (-) cable between the half cell and theNegative (-) terminal on the voltmeter.

5.OPERATION WITHOUT HALF-CELL ELECTRODE

Use same as any standard voltmeter formeasuring D.C. potentials. 
 
 

6.BATTERY TEST

Battery has a shelf-life, and needs replacementwhen the display numerals begin to flash on and off. 
 
 

7.BATTERY REPLACEMENT

Simply unscrew the top four screws of thevoltmeter panel and install the battery where indicated. (Battery is NEDA1604) "9 volt transistor type".
 
 

8.WARRANTY

Warranty is on workmanship and materialfor 90 days from date of purchase. Warranty does not cover transportationor damages beyond normal wear and tear. 
 
 

9.NON-WARRANTY REPAIR POLICY

Tinker & Rasor will repair any repairablepast-warranty Model CPV-4 (instrument only) for a charge not to exceed50% of current list price for a period of three years from date of sale. 
 
 

10.SHIPPING INSTRUCTIONS 

All instruments being returned for repair should be sent PREPAID to either address below: 

Ship Via Courrier (UPS, FedEx, DHL, etc)

Tinker & Rasor
ATTN: Repairs
791 S. Waterman Ave.
San Bernardino, CA 92408

Ship Via US Postal Mail

Tinker & Rasor
ATTN: Repairs
PO BOX 6890
San Bernardino, CA 92412-6890

Include with shipment information the nature of the problem, purchase order, serial number
and return delivery address, phone and fax numbers. Immediate service is guaranteed!