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Digital DC Clamp on Ammeters |
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Specializing in the custom design and manufacturing of switching power supplies, DC UPS and intelligent battery chargers for
OEMs in a hurry.
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| DC Clamp meter Model |
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| PST-CM01 |
Clamp on multimeter
10 mA resolution |
$232
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| PST-PR11 |
Clamp on multimeter 1 mA resolution |
$364
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This is a very handy tool for engineers working with batteries, power supplies, chargers, electric bicycles
and vehicles. You just clamp the sensor over one of the current carrying wires and read the amps. No need to break the circuit
because it is contactless. It is much safer than using an ammeter that is inserted in-line less disturbing to the circuit, and
much more convenient.
Theory of operation: To do a contactless measurement with the clamp ring this ammeter uses a hall
effect device to measure the axial magnetic field generated in the wire by current flowing through it. The clamp surrounds the
wire, which is creating a magnetic field around it according to Ampere's Law. The magnetic field is concentrated by an iron
core contained in the clamp. The magnetic field is sensed at an air gap that contains a semiconductor hall effect detector.
Current flowing through the silicon chip is deflected by the magnetic field creating a voltage perpendicular to the direction
of electron flow. This voltage is detected and converted to amps by the internal microprocessor and displayed on the LCD
panel.
The direction of the magnetic field depends on the direction of current flow in the wire and is indicated by the
plus and minus ampere readings. An arrown in the clamp ring indicates the polarity.
These clamp-on DC reading ammeters
are very hard to find, usually digital clamp-on ammeters are AC only. Since they are so useful in the power supply and battery
industries we hunted these down and can offer them at a very affordable price.
As an added bonus these also can measure
AC current through the clamp, as well as AC and DC voltage and continuity check through test leads. This is an essential
instrument for auto shops, electronics labs, bicycle shops, product development labs, wheelchair technicians and everyone who
needs to know how many amps is flowing in a wire. They are good for working in crowded switch box, panels, and wire
harnesses.
We have two models. The PST-CM01 has a maximum current reading of 200 amps and a resolution of 10 mA. The
PST-PR11 has a maximum current reading of 30 amps and an incredible resolutin of 1 mA for DC and 0.1 mA for AC measurements.
- 3-3/4 digit large LCD display providing 4000 count with symbols
- Clamp current test up to 200 Amps DC or 30 Amps DC (or AC)
- Additional voltage, resistance, frequency continuity check features on the PST-CM01 using leads
- Additional voltage feature on the PST-PR11 using leads
- DC Amps zero adjust function
- Low Battery Indicator
- 23 mm Large Jaw Diameter
- Data Hold and Auto-Off Functions
- Size: 182mm x 50mm x 35mm
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| PST-CM01 200 Amp Max, 10 mA
resolution |
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Range |
Resolution |
Accuracy |
Remarks |
| DCA 0-40A (clamp) |
10mA |
+/- 1.0%
+/- 2dgts |
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| DCA 0-150A (clamp) |
100mA |
+/- 1.0%
+/-2 dgts |
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| DCA 150-200A (clamp) |
100mA |
-2.2%
+/- 2dgts |
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| ACA 0-40A (clamp) |
10mA |
+/- 1.0%
+/- 3 dgts |
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| ACA 0-150A (clamp) |
100mA |
+/- 1.0%
+/- 3 dgts |
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| ACA 150-200A (clamp) |
100mA |
-2.2%
+/- 3dgts |
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| DCV 0-400V (leads) |
0.1 V |
+/- 1.0%
+/- 2dgts |
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| ACV 0-400V (leads) |
0.1 V |
+/- 1.0%
+/- 2 dgts |
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| W0-400W(leads) |
0.1W |
+/- 1.0%
/-2dgts |
beep if < 40W (Approx.) |
| Hz 0-1000KHz (leads) |
0.1-100 |
+/- 0.5%
+/- 2dgts |
1V sensitivity Auto Range |
| PST-PR11 40 Amp Max, 1 mA resolution
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| Range |
Output |
Accuracy |
| DCA 0-4000mA (clamp) |
1mA |
+/- 1.5%rdg
+/- 5dgts |
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| DCA 0-30A (clamp) |
10mA |
+/- 1.5%rdg
+/- 3dgts |
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| ACA 0-400mA (clamp) |
0.1mA |
+/- 1.5%rdg
+/- 5dgts |
True RMS |
| ACA 0-4000mA (clamp) |
1mA |
+/- 1.5%rdg
+/- 8dgts |
True RMS |
| ACA 0-30A (clamp) |
10mA |
+/- 2.0%rdg
+/- 5dgts |
True RMS |
| DCV 0-400V (leads) |
0.1V |
+/- 1.0%rdg
+/- 3dgts |
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| ACV 0-400V (leads) |
0.1V |
+/- 2.0%rdg
+/- 5dgts |
True RMS |
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Power Source:
2 X 1.5V AA UM3
Batteries
Current Consumption: 10mA
Operating Condition:
-10oC to 50oC at 85% max. RH
Agency Approvals:cUL EN61010-2-032, CE CAT II 600V, CAT III 300V |
| DC Clamp meter Model |
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| PST-CM01 |
Clamp on multimeter
10 mA resolution |
$232
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| PST-PR11 |
Clamp on multimeter 1 mA resolution |
$364
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PowerStream Technology: 140 South Mountainway Drive, Orem
Utah, 84058
Phone: 801-764-9060, 9062, 9063, 9064  Fax: 801-764-9061 |
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PowerStream Technology
140 South Mountainway Dr.
Orem, UT
84058
Phone: 801-764-9060, 9062, 9063, 9064
Fax: 801-764-9061
Map & Directions |
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© Copyright 2000, 2002, 2003, 2004, 2006, 2007 Lund Instrument Engineering,
Inc. All rights reserved |
Clamp-on ampmeter
AC/DC ammeter, AC-DC ampmeter, contactless ammeter |
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