Converting dc current to an isolated voltage or current loop, optional Modbus interfaces
The CTH Type 10 current sensors convert dc (dc to LF) currents to an isolated voltage or mA output with instantaneous precision
The CTH current sensors convert very large dc currents, dc amps to an isolated voltage or mA output with high precision and response times. The CTH Type 10 and Type 11 output is a faithful reproduction of the measured current, whether ac or dc. All popular EV (Electro vehicle) types, process control voltage and current loop outputs are available. Modbus over ethernet allows quick hook-up to DAQs. Through hole or split core options mean that connection is non-intrusive, straightforward and fast to install. The available Amps input range of the CTH sensors is any value from 1A to 40000Adc. Optional dc offset control allows nulling of residual dc current to ensure best use of the output span. The sensor power input is designed to operate over a wide voltage range associated with process control and sub-station auxiliary dc supply systems. Active Hall Effect sensor technology allows measurement from DC-1kHz (depending on the sensor type) along with fast step response. The CTH Type 10 can also be used to provide an instantaneous output for ac currents. Typical applications are found in process control systems like PLC or SCADA, transportation, telecommunications, dc drives, welding, arc furness and circuit breaker testing. For all CTH models, a NIST/NPL (UKAS) traceable calibration certificate and certificate of conformance is supplied.
Type 10: 140mm (5.5") x 203mm (8") 5000A - 20000A Sensor connects to signal conditioner via 2.4M cable
Type 11: 330mm (13") x 330mm (13") 25000A - 40000Adc Sensor connects to signal conditioner via 2.4M cable
Longer cable lengths available - on request
The order code is based on:-
CTH / amps input / output / SC or TH / power input + core type
SC = split core, TH = through hole (non-split core)
Note: 230Vac/dc and 115Vac/dc adapters are available (in this case the CTH will be supplied with 9-36Vdc input and ac adapter)
Options R : Ruggedization (not available for all sensor types)
Option T : Extended temperature range -40°C - 85°C (not available for all sensor types)
Options : noise rejection and offset, user can specify upper or lower frequency –3db point
Non standard input current
Non standard output voltage, current (25mA, 1A, 5A), USB, RS485 and WiFi interfaces available
All models constructed with self extinguishing materials to UL94V0 and CSA
CTH / 400A / 10 / TH / 48Vdc type 4
±400Adc input, ±0-10V output, through hole, 48Vdc aux power input core type 4 (50mm hole dia)
CTH / 800A / 5 / SC / 9-32Vdc type 8 RS485
±800Adc input, ±0-5V output, split core, 9-32Vdc aux power input, core type 8 (50mm hole dia) RS485 interface
Signal conditioner terminal connections
Terminals numbers used in DC Current Transducer Config:
Inst. Power: 13/14 +ve/-ve | Sensor 15(wht) 16(Red) 17(blk) 18(Grn)| Outputs: 7/8 4-20mA 9/10 0-10V (7, 9 grounds)
Input and output grounds are isolated 300V
Signal conditioner overall size 106mm (4.187") x 90mm (3.5") x 32mm (1.25")