Amprobe CT237A Data sheet
Data Sheet
300V
CT237A
Amp Clamp Accessory
Current Transformer
This current transformer probe measures AC or DC current. It converts high current to a low level millivolt signal for input directly
into a test instrument. It can be used with standard DMMs, recorders, digital or analog meters, data loggers/DAS, oscilloscopes,
or other test and measurement instruments.
AC/DC current clamp, 200 A ■
Zero adjust knob ■
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Included Accessories
Attached leads and users manual.
Amprobe® Test Tools
www.Amprobe.com
CT237A Amp Clamp Accessory
General Specifications
Max Conductor Size 19 mm (0.75 in)
Lead Length 1.5 m (59 in)
Power 9 V battery, NEDA 1604, JIS 006P, IEC 6F22
Battery Life 50 hours (alkaline)
Operating Temperature Range – 0 °C to + 50 °C at < 80 % R.H.
Storage Temperature Range – 20 °C to + 85 °C
Temperature Coefficient 0.1 % of rdg per 1 °C
Dimensions 55 mm x 210 mm x 30 mm (2.2 in x 8.3 in x 1.2 in)
Weight 290 g (.64 lb.)
Warranty One-year
Specifications (23 °C ± 1 °C, < 75 % R.H.)
Function Range Accuracy
DC Current
DC Current 20 A, 200 A 20 A: ± (1 % of rdg + 0.03 A)
200 A: ± (1 % of rdg + 0.3 A)
Meter Input Impedance 10 kW min. and 100 pF max.
Division Ratio 1000 to 1
Output 20A: 1 A DC at jaws= 10 mV DC to meter
200A: 1 A DC at jaws= 1 mV DC to meter
AC Current
DC–10 kHz 20 A, 200 A rms 20 A (< 5 kHz) ± (1 % of rdg + 0.03 A)
20 A (5 to 10 kHz) ± (2 % of rdg + 0.03 A)
200 A (< 2 kHz) ± (1 % of rdg + 0.3 A)
200 A (2 to 5 kHz) ± (2 % of rdg + 0.3 A)
200 A (5 to 10 kHz) ± (5 % of rdg + 0.3 A)
Meter Input Impedance 10 kW min. and 100 pF max.
Division Ratio 1000 to 1
Output 20 A: 1 A AC at jaws = 10 mV AC to meter
200 A: 1 A AC at jaws = 1 mV AC to meter
Overload Protection 700 A for 10 minutes and 20 minutes OFF
300 V AC on uninsulated conductors
Data Sheet
Amprobe® Test Tools
website: www.Amprobe.com
email: info@amprobe.com
Everett, WA 98203
Tel: 877-AMPROBE
Amprobe® Test Tools
Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
Tel.: +49 (0) 7684 8009 - 0
©2007 Am probe Test Tools. All rights res erved.
7/2007 PN: 1646512 D- US- N Rev C
www.Amprobe.com
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