1048 Current - Voltage - Loop Calibrator Time Electronics Calibration, Test & Measurement Source & Measure - Current & Voltage 3 Source ranges 0 - 22mA & 0 - 22V 3 Measure ranges 0 - 70mA & 0 - 50V Transmitter Simulator/Sink Output Steps and Ramps Fine adjustment (Inching) Accuracy 0.02% of span The 1048 is a current, voltage, and process loop calibrator that covers the needs of an R&D lab and process control engineer. Source and measure in three current and voltage ranges plus a transmitter simulator/sink function. It has 4.5 digit (0.005% of span) resolution. Output functions include step, ramp and inching. There are no key press menus to learn, just switches and buttons. A multi-turn potentiometer controls the output with up/down incrementing buttons for fine control. The output can be reversed (+/-) and zeroed at the flick of a switch. The front panel features a large easy-to-read 4.5 Digit LCD display which auto- ranges. Manual reset of the ramp function is also provided for quick restore. 1048 Applications 2 w ire transducer/transmitter Sensor Receiving instrument + - + - Read Mode + - Source Mode Pow er Supply Controller 2 w ire transducer/transmitter + - Sensor + Pow er - Supply Read & Power Mode Sink Mode (transmitter simulator) Time Electronics, Botany Industrial Est. Tonbridge, Kent. England. TN9 1RH. Tel: +44 (0)1732 355993 Fax: +44 (0)1732 770312 E-mail: mail timeelectronics.co.uk www.timeelectronics.com V1a 28/04/09 1048 Technical Specifications DC CURRENT - Source and Measure DC VOLTS - Source and Measure Span: 0 - 22mA, over-range to 70mA for Span: 0 - 22V, over-range to 50V for measure measure only only Accuracy: 0.02% of span Accuracy: 0.02% of span Resolution: 1uA (0-19.999mA), 10uA (above 20mA) Resolution: 1mV (0-19.999V), 10mV (above 20V) Span: 0 - 2.2mA Span: 0 - 2.2V Accuracy: 0.02% of span Accuracy: 0.02% of span Resolution: 0.1uA (0-1.9999mA),1uA (above2mA) Resolution: 100uV (0-1.9999V), 1mV (above 2V) Span: 0 - 220uA Span: 0 - 220mV Accuracy: 0.05% of span Accuracy: 0.05% of span Resolution: 10nA (0-199.99uA), 0.1uA (above 200uA) Resolution: 10uV(0-199.99mV), 0.1mV (above 200mV) Max source load: 1.1Kohms 20mA. Max drive: 22V Output res: Approx <2 ohms. Max current 50mA Measure load: 1K,110,16 ohm for 0.22, 2.2, 22mA Measure load: 1Mohm on all ranges SINK (TX SIM) 2 wire transmitter simulation: External excitation voltage, 3V min, 50V max. The current sink levels are adjustable, with accuracies as in the 3 source ranges shown above. Note: Accuracies in all measure modes are +/-1 digit OUTPUT STEPS 5 fixed 4mA steps for current output 4, 8, 12, 16 & 20 mA 11 fixed 1V steps for voltage output 0,1,2...10V 21 fixed steps 1V/1mA for V & I output 0,1,2...20 Stepping can be done manually or automatically (Autostep) Stepping speed is adjustable (1-9 sec/step). Dwell time (top and bottom) is one step period. In step mode the accuracy is limited to 0.05% of span +/-1digit. OUTPUT RAMP Current Ramp 4 to 20, or 0 to 20 on all ranges. Voltage Ramp 0 to 10, or 0 to 20 on all ranges. Ramp time 7sec. Dwell (top/bottom) 5sec. Manual restart. Ramp operation is also available in Sink (TX SIM). OUTPUT ADJUSTMENT A ten turn potentiometer is provided for quick positioning with fine adjust using up/down incrementing buttons. Power: A single internal 9V PP3 size battery or an optional external mains power supply. Battery life: Typically about 15hrs use. Continuous operation in current source mode will shorten the battery life. A 15 min inactivity auto-power down feature is also included to conserve the battery. Operating temperature: -10 to 50 C (14 to 120 F) Storage temperature: -30 to 70 C (-22 to 160 F) Operating humidity: 10-90% non-condensing at 25 C General Specification Dimensions: 142mm (5.6) x 78mm (2.9) x 50mm (2.0) Weight: 0.28kg (0.6lbs) Housing: A pocket sized hard ABS case in a leatherette carry case. Leads can be stored inside of the case. Optional Extras: External Power Unit: 230 or 110V mains power supply Calibration Certificates traceable to N.P.L. and UKAS Ordering Information Code Description 1048 V - I - Loop Calibrator 0.02% 7643 230/240V AC 50/60Hz Mains Power Supply 7652 110V Mains Power Supply 9176 Factory (NPL Traceable) Calibration Certificate 9138 UKAS Calibration Certificate (ISO 17025) Due to continuous development Time Electronics reserves the right to change specifications without prior notice. Time Electronics, Botany Industrial Est. Tonbridge, Kent. England. TN9 1RH. Tel: +44 (0)1732 355993 Fax: +44 (0)1732 770312 E-mail: mail timeelectronics.co.uk www.timeelectronics.com