Tri-State Instrument Laboratory

United States

Precision temperature measurement requires precision test equipment. At Tri-State Instrument Laboratory we are a full line distributor for Fluke, Amprobe, Extech, Yokogawa and many others. Whether your needs are for contact or non-contact instruments let Tri-State provide you with the quality product you need.

Tri-State Instrument Laboratory is an authorized modification center for Yokogawa, Hoyt, and Simpson digital and analog meters. Tri-State Instrument Laboratory also maintains a complete inventory of current transformers and shunts.

• Weight1 Lb. Battery: 1”C”
• MODELTSW-155
• Size4” X 2 7/8 X 1 9/16
• Leads30” long, terminated in insulated alligator dips.

Rotation of electrical motor shafts in the wrong direction can cause severe mechanical damage to expensive machinery. A motor rotation indicator can quickly show this shaft rotation direction in advance, therefore becoming a valuable piece of test equipment. On a three phase motor, direction of the shaft rotation is determined by the three phase rotation of supply line voltage and the corresponding connections to the motor. When the ABC phases of the line voltage are connected to the ABC phases of the motor it will rotate in a clockwise direction. If the ABC phases of the line voltage are connected to the CBA phases of the motor it will rotate in a counterclockwise direction. The TSW-155 Motor Rotation Indicator provides a positive indication of direction of shaft rotation in unmarked multi-phase motors and can identify phasing of transformer windings. It is small, light weight, can be carried easily and is built to last. With push button operation and instant readings. Connect Leads Disconnect motor from line, connect the three indicator leads to the three motor leads. Push Button Push the “ON” button and hold it down. Rotate the motors shaft by hand, 1, 4 turn in desired direction. Note first direction, ABC or CBA and release button. Set Rotation If ABC showed on meter then connect phase ABC of three phase line to motor leads identified ABC by the indicator leads. The motor will turn as desired. If CBA showed on the meter reverse leads A and C and repeat steps two and three.

All types of clamp meters from all major manufacturers including Fluke, Extech, Amprobe, AEMC, Yokogawa and many others. We know how you use your tools. You need dependable, fast and convenient test equipment to access tight spots easily. We offer back-lit models so readings can be taken in virtually any lighting situation. Tri-State Instrument Laboratory can provide you with meters of different jaw sizes and shapes with measurement ranges specific to your application.

Tri-State Instrument Laboratory is a distributor for quality digital and analog multimeters from Fluke, Amprobe, Extech, AEMC, Yokogawa, Triplett, Simpson and many others. Whether your needs are facility maintenance, field service, HVAC, engineering, electronics testing, industrial, aerospace, military, or automotive troubleshooting Tri-State Instrument has the Multimeter and accessories for you.

Tri-State Instrument Laboratory understands the importance of reliability and accuracy. That's why we only handle the finest brands of analog and digital Megohmmeters. Brands that you can trust such as Fluke, AEMC, Yokogawa, Amprobe, Extech and many others. These products can be used for many applications including testing switchgear, motors, generators and cables with ranges up to 5000 V DC. Let us provide you with the correct product for your needs at a reasonable price.