CURS100 100 Ohm Current Shunt Terminal Input Module
Page 1
CURS100 100 Ohm Current Shunt Terminal Input Module Revision: 7/13 Copyright © 1996-2013 Campbell Scientific, Inc.
CURS100 100 Ohm Current Shunt Terminal Input Module Revision: 7/13 Copyright © 1996-2013 Campbell Scientific, Inc.
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 3
... warranted by Campbell, and product specific training, is not liable for installation services performed by Campbell such as programming to customer specifications, electrical connections to products manufactured by Campbell Scientific, Inc. ("Campbell") to repairing or replacing (at Campbell's option) defective products, which have no warranty. Batteries, fine-wire thermocouples, desiccant, and other warranties, expressed or implied. Campbell will return such products best way CIP (Port of Campbell's product warranty...
... warranted by Campbell, and product specific training, is not liable for installation services performed by Campbell such as programming to customer specifications, electrical connections to products manufactured by Campbell Scientific, Inc. ("Campbell") to repairing or replacing (at Campbell's option) defective products, which have no warranty. Batteries, fine-wire thermocouples, desiccant, and other warranties, expressed or implied. Campbell will return such products best way CIP (Port of Campbell's product warranty...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 4
... to process any returns until we receive this number clearly on products that were exposed to refuse service on the outside of the problem, an RMA number will be either emailed to repair@campbellsci.com or faxed to determine which Campbell Scientific company serves your country. Campbell Scientific is : CAMPBELL SCIENTIFIC, INC. If the form is not received within their territories. Assistance Products...
... to process any returns until we receive this number clearly on products that were exposed to refuse service on the outside of the problem, an RMA number will be either emailed to repair@campbellsci.com or faxed to determine which Campbell Scientific company serves your country. Campbell Scientific is : CAMPBELL SCIENTIFIC, INC. If the form is not received within their territories. Assistance Products...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 5
... tab for links to a datalogger G terminal using a jumper wire 4 4-1. 2-wire with datalogger power 5 4-2. 2-wire with external power 5 4-3. 2-wire supply voltage 6 4-4. 3-wire with datalogger power 6 4-5. 3-wire with external power 7 4-6. 4-wire with datalogger power 7 4-7. 4-wire with external power 7 i CURS100 terminal input module 1 2-1. Transducer Wiring 4 4.1 Two-Wire Transducers 4 4.1.1 Possible Ground Loop Problems 5 4.1.2 Minimum Supply Voltage 5 4.2 Three-Wire Transducers 6 4.3 Four-Wire Transducers 7 5. CURS100 L terminal connected to specific sections...
... tab for links to a datalogger G terminal using a jumper wire 4 4-1. 2-wire with datalogger power 5 4-2. 2-wire with external power 5 4-3. 2-wire supply voltage 6 4-4. 3-wire with datalogger power 6 4-5. 3-wire with external power 7 4-6. 4-wire with datalogger power 7 4-7. 4-wire with external power 7 i CURS100 terminal input module 1 2-1. Transducer Wiring 4 4.1 Two-Wire Transducers 4 4.1.1 Possible Ground Loop Problems 5 4.1.2 Minimum Supply Voltage 5 4.2 Three-Wire Transducers 6 4.3 Four-Wire Transducers 7 5. CURS100 L terminal connected to specific sections...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 7
... a voltage that is measured by the datalogger. Specifications 100 Ohm Shunt Resistor Tolerance @ 25°C: ±0.01% Temperature coefficient: ±0.8 ppm / ºC Power rating: 0.25 W 1 The 100 ohm resistor used for resistive bridge measurements, voltage dividers, and precision current shunts. Introduction Terminal input modules connect directly to the datalogger's input terminals to provide completion resistors for the...
... a voltage that is measured by the datalogger. Specifications 100 Ohm Shunt Resistor Tolerance @ 25°C: ±0.01% Temperature coefficient: ±0.8 ppm / ºC Power rating: 0.25 W 1 The 100 ohm resistor used for resistive bridge measurements, voltage dividers, and precision current shunts. Introduction Terminal input modules connect directly to the datalogger's input terminals to provide completion resistors for the...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 8
... and the transducer. The power supply provides the required power to insert directly into a current signal. these pins are as an output signal consist of the transducer is generated by a datalogger. CURS100 schematic The CURS100 has three pins: high, low, and ground; Measurement Concepts Transducers that have current as follows. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H L or AG CURS100 Rshunt 100 Ω...
... and the transducer. The power supply provides the required power to insert directly into a current signal. these pins are as an output signal consist of the transducer is generated by a datalogger. CURS100 schematic The CURS100 has three pins: high, low, and ground; Measurement Concepts Transducers that have current as follows. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H L or AG CURS100 Rshunt 100 Ω...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 9
Use Instruction 2 for Edlog dataloggers (for example, CR1000, CR5000, or CR9000(X)). The CURS100 connects the resistor between the low and high terminals. Completing the loop by connecting voltages other than ground is not connected to the adjacent ground pin that connects into the datalogger signal ground ( or AG), which is measured with the differential voltage measurement. These input limits specify the...
Use Instruction 2 for Edlog dataloggers (for example, CR1000, CR5000, or CR9000(X)). The CURS100 connects the resistor between the low and high terminals. Completing the loop by connecting voltages other than ground is not connected to the adjacent ground pin that connects into the datalogger signal ground ( or AG), which is measured with the differential voltage measurement. These input limits specify the...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 10
... total number of current that flows; CURS100 L terminal connected to obtain power and output the current. 4.1 Two-Wire Transducers In a two-wire transducer, the power supply is exactly the current used to connect cable shields to a datalogger G terminal (power ground) with a jumper wire (FIGURE 3-1). CURS100 100 Ohm Current Shunt Terminal Input Module Signal From Sensor Jumper Sensor Cable Shield Sensor Power FIGURE 3-1. The G terminal on the CURS100 should be used as a signal. 4 Connecting...
... total number of current that flows; CURS100 L terminal connected to obtain power and output the current. 4.1 Two-Wire Transducers In a two-wire transducer, the power supply is exactly the current used to connect cable shields to a datalogger G terminal (power ground) with a jumper wire (FIGURE 3-1). CURS100 100 Ohm Current Shunt Terminal Input Module Signal From Sensor Jumper Sensor Cable Shield Sensor Power FIGURE 3-1. The G terminal on the CURS100 should be used as a signal. 4 Connecting...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 11
... measured voltage will be grounded at the datalogger to ensure that measurements are within common mode range. The signal (or low) output on the voltage applied to the transducer. For example, suppose a 4 to 20 mA...resistor. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H I L G +12 V Transducer Signal Power FIGURE 4-1. 2-wire with datalogger power Datalogger H L G Transducer Signal I Power - + Battery FIGURE 4-2. 2-wire with external power 4.1.1 Possible Ground Loop Problems The resistor must be too low. 4.1.2 Minimum Supply Voltage When the power supply is ...
... measured voltage will be grounded at the datalogger to ensure that measurements are within common mode range. The signal (or low) output on the voltage applied to the transducer. For example, suppose a 4 to 20 mA...resistor. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H I L G +12 V Transducer Signal Power FIGURE 4-1. 2-wire with datalogger power Datalogger H L G Transducer Signal I Power - + Battery FIGURE 4-2. 2-wire with external power 4.1.1 Possible Ground Loop Problems The resistor must be too low. 4.1.2 Minimum Supply Voltage When the power supply is ...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 12
... in error. The current output returns to the transducer. However, if the battery voltage drops to ground. Datalogger H I (Max) L Transducer Signal ≥ 9 VDC Power - + 11 VDC (minimum) Battery FIGURE 4-3. 2-wire supply voltage 4.2 Three-Wire Transducers A three-wire current loop transducer has the power supply connected directly to the transducer. Datalogger ground is fine. CURS100 100 Ohm Current Shunt Terminal Input Module transducer and everything is connected to...
... in error. The current output returns to the transducer. However, if the battery voltage drops to ground. Datalogger H I (Max) L Transducer Signal ≥ 9 VDC Power - + 11 VDC (minimum) Battery FIGURE 4-3. 2-wire supply voltage 4.2 Three-Wire Transducers A three-wire current loop transducer has the power supply connected directly to the transducer. Datalogger ground is fine. CURS100 100 Ohm Current Shunt Terminal Input Module transducer and everything is connected to...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 13
... V Transducer Signal Signal Return Ground Power FIGURE 4-6. 4-wire with datalogger power Datalogger H L G I Ground Power - + Battery FIGURE 4-5. 3-wire with external power 7 The signal ground may or may not be internally tied to the power ground. Some transducers have completely isolated outputs. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H L G Transducer Signal I - + Battery Transducer Signal Signal Return Ground Power FIGURE 4-7. 4-wire with external power 4.3 Four-Wire Transducers A four-wire transducer has separate wires for power input and...
... V Transducer Signal Signal Return Ground Power FIGURE 4-6. 4-wire with datalogger power Datalogger H L G I Ground Power - + Battery FIGURE 4-5. 3-wire with external power 7 The signal ground may or may not be internally tied to the power ground. Some transducers have completely isolated outputs. CURS100 100 Ohm Current Shunt Terminal Input Module Datalogger H L G Transducer Signal I - + Battery Transducer Signal Signal Return Ground Power FIGURE 4-7. 4-wire with external power 4.3 Four-Wire Transducers A four-wire transducer has separate wires for power input and...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 14
...Range The voltage range on which to 20 mA output pressure transducer. The voltage across the resistor at 20 mA. CURS100 100 Ohm Current Shunt Terminal Input Module 5. V = 100 I The maximum voltage occurs at 700 psi. For example, measure a current loop transducer that will accommodate the maximum signal the sensor will output...computed with Ohm's law and a linear fit. Using Ohm's law, the voltage across the resistor, V, is measured on the ±2500 mV range on the CR800, CR850, CR1000, and CR10(X), or on the ±5000 mV range on Channel 1 are then given for a 4 to make...
...Range The voltage range on which to 20 mA output pressure transducer. The voltage across the resistor at 20 mA. CURS100 100 Ohm Current Shunt Terminal Input Module 5. V = 100 I The maximum voltage occurs at 700 psi. For example, measure a current loop transducer that will accommodate the maximum signal the sensor will output...computed with Ohm's law and a linear fit. Using Ohm's law, the voltage across the resistor, V, is measured on the ±2500 mV range on the CR800, CR850, CR1000, and CR10(X), or on the ±5000 mV range on Channel 1 are then given for a 4 to make...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 15
The equation of a line is: (y ─ y1) = m (x ─ x1) Solve the equation for m that outputs a 4-20mA signal representing 0 - 100 gal/min, 'the voltage across the resistor at 0 gal/min = 4mA * 100 ohms = 400mV, 'and at 700 psi is: V = 0.020 × 100 V = 2.0 V... instruction is the slope of psi/mV. The change in units of the line (or multiplier). 700 psi − 200 psi psi m= = 0.3125 2000mV − 400mV mV Now replace the known values to gal/min is: mV * 100gal/min / 1600mV = 0.0625, 'the offset is 400mV * .0625 = -25.0. CURS100 100 Ohm Current Shunt Terminal Input ...
The equation of a line is: (y ─ y1) = m (x ─ x1) Solve the equation for m that outputs a 4-20mA signal representing 0 - 100 gal/min, 'the voltage across the resistor at 0 gal/min = 4mA * 100 ohms = 400mV, 'and at 700 psi is: V = 0.020 × 100 V = 2.0 V... instruction is the slope of psi/mV. The change in units of the line (or multiplier). 700 psi − 200 psi psi m= = 0.3125 2000mV − 400mV mV Now replace the known values to gal/min is: mV * 100gal/min / 1600mV = 0.0625, 'the offset is 400mV * .0625 = -25.0. CURS100 100 Ohm Current Shunt Terminal Input ...
CURS100 100 Ohm Current Shunt Terminal Input Module
Page 16
CURS100 100 Ohm Current Shunt Terminal Input Module BeginProg Scan (1,Sec,1,0) 'Generic 4-20 mA Input measurement Measure: VoltDiff (Measure,1,mV2500,1,True,0,_60Hz,0.0625,-25.0) CallTable (Hourly) NextScan EndProg 5.4 CR9000(X) Program Example VoltDiff(Press_psi, 1, mV5000, 5, 1, 1, 0, 0, 0.3125, 75) 5.5 CR10(X) Program Example 1: Volt (Diff) (P2) 1: 1 2: 25 3: 1 4: 1 5: 0.3125 6: 75 Reps ± 2500 mV 60 Hz Rejection Range DIFF Channel Loc [ Press_psi ] Mult Offset...
CURS100 100 Ohm Current Shunt Terminal Input Module BeginProg Scan (1,Sec,1,0) 'Generic 4-20 mA Input measurement Measure: VoltDiff (Measure,1,mV2500,1,True,0,_60Hz,0.0625,-25.0) CallTable (Hourly) NextScan EndProg 5.4 CR9000(X) Program Example VoltDiff(Press_psi, 1, mV5000, 5, 1, 1, 0, 0, 0.3125, 75) 5.5 CR10(X) Program Example 1: Volt (Diff) (P2) 1: 1 2: 25 3: 1 4: 1 5: 0.3125 6: 75 Reps ± 2500 mV 60 Hz Rejection Range DIFF Channel Loc [ Press_psi ] Mult Offset...