Using advanced Hall Effect technology the CT-237 can accurately measure
currents up to 200 A r.m.s. over the frequency range of DC to 10 kHz, while the
CT-235 measures currents up to 1000A DC or AC peak. These features make
them powerful tools for use in inverters, switch mode power supplies, industrial
controllers, automotive diagnostics and other applications requiring accurate
isolated current measurement.
2. SPECIFICATIONS
2.1 Electrical data
(All accuracies stated at 23°C ± 1°C)
Current ranges
CT-237
CT-235
Overload capacity
Overall accuracy
CT-237, 20A range DC
20A range AC, <5kHz
5kHz to 10kHz
CT-237, 200A range DC
200A range AC, <2kHz
2kHz to 5kHz:
5kHz to 10kHz:
CT-235, 200A/1000A range, DC±1% of rdg ± 0.5A
200A/1000A range, AC, <10kHz ±1% of rdg ± 0.5A
Resolution
CT-237, 20A range
CT-237, 200A range
CT-235, 200A range
CT-235, 1000A range
Temperature coefficient
Output sensitivity
CT-237, 20A range
CT-237, 200A range
CT-235, 200A range
CT-235, 1000A range
Frequency range ( -1dB)
current heating for Irms x f >400,000)
Dielectric strength
Safety: Meets EN61010-1 Cat III 300V; EN61010-2-032
EMC: Meets EN50081-1, EN50082-1
EMC: This product complies with requirements of the following
European Community Directives: 9/336/EEC (Electromagnetic
Compatibility) and 73/23/EEC (Low Voltage) as amended by 93/68/EEC (CE
Marking).
2.2 General data
Operating temperature
Storage temperature with
battery removed
Power supply
PP3, NEDA 1604 or IEC6F22
Battery life
Load impedance (minimum) >10 kΩ and ≤100pF
Conductor size
CT-237
CT-235
Jaw opening
CT-237
CT-235
Weight
CT-237
CT-235
Output cable and connectors 1.5 m long terminated with 4mm safety plugs
20A and 200A DC and AC r.m.s.
200A and 1000A DC and AC peak
1000 %
±1% of rdg ± 0.03A
±1% of rdg ± 0.03A
±2% of rdg ± 0.03A
±1% of rdg ± 0.3A
±1% of rdg ± 0.3A
±2% of rdg ±0,3A
±5% of rdg ±0,3A
± 10mA
± 100mA
± 100mA
± 100mA
± 0.1% of reading/°C
10 mV/A
1mV/A
1 mV/A
1 mV/A
DC to 10 kHz (limited by eddy
3.7kV r.m.s. 50 Hz for 1 min
0°C to +50°C
- 20°C to +85°C
9 V, Alkaline battery
50 hours typical
19 mm
31 mm
20 mm max.
32 mm max.
250 g.
295 g.
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