CEH CALIBRATION ENGINEERING HOHMANN

The precision RTD simulator is used where measuring instruments or controlling means with high precision must be examined or calibrated. The simulator is suitable for calibration laboratory and service centers which need a computer-controlled resistance decade for the automation of calibration procedures. All standard platinum and nickel RTD can be simulated with very high accuracy according to scales ITS 90 or IPTS 68. Temperature regulators, transducers etc. often supply a pulsed signal current in order to reduce the self-heating of the RTD. Devices with electronic simulation of RTD are therefore inclined to swinging and do not function with this application. Features: — Simulation of Pt100, Pt200, Pt500, Pt1000, Ni100 and Ni1000 sensors — Accuracy 0.02 °C — Temperature scales ITS 90, IPTS 68 — Real Ohm simulation — Control manually or remotely via RS232/IEEE488/USB Converter

The precision calibration unit combines high accuracy, low drift, low noise and superior long-term stability with multiple functionality and simple operation. Ramps, Δ+/Δ-, and multiple setpoint storage make the operation of the device easier for the user. For that reason the application possibilities are many: — Calibration of current and DC-voltage meters — Precise testing of thermocouple temperature measuring instruments — Calibration of controllers, sensors, detection devices and other devices used in process control — Open-loop process control with the aid of integrated ramp function Features: — High precision current and voltage source ± 52 mA, ± 30 V — Option: ± 22 mA, ± 60 V — Precision simulation for all conventional thermocouple types (optional) — Error limit 0.003 % Rdg. — Standard with RS232 and IEEE488 interface, USB and Ethernet (optional) — Current "SINK"

The DIGISTANT® model 4420 universal calibrator, built to use in the field, is ideal for checking and calibrating temperature measurement and control devices. The versatile functions of this portable unit allow to be used on-site or at a fixed location, on the test floor or in the laboratory. The unit allows the simulation and measurement of voltages, currents, temperatures and resistances.Simultaneous transmission and measurement allow, for example, controllers to be checked precisely. The automatic ramp function is used for controlling processes. The universal calibrator measures and simulates 14 models of thermocouples and Pt100. Features: Calibration and measurement unit for voltages, currents, temperatures and resistances All functions can be fully controlled and configured via RS232 interface Simultaneous transmission and measurement Automatic ramp function Simple menu assistance via display Voltage range ± 1 μV to ± 11.000 V Current range ± 200 nA to ± 22.000 mA

Wherever temperatures are measured, temperatures must also be simulated. The Pt100-simulator is suitable for a wide area of applications. It has a wide range of simulation, which is resolved in 0.1 °C steps and makes many assignments in chemistry-, measuring-, controlling-, medicine and household applications, food industry, vehicle construction, air- and space travel and power plants easy to solve. Often in the past several simulators had to be used alongside to achieve either resolution or the range of the relevant application. As an extra advantage to the user temperatures can be entered in degrees celsius. Additional extensive conversions and readings in tabulation sheets are no longer necessary. Features: — Simulation range -100 °C up to +500 °C — Resolution 0.1 °C — Calibration in accordance to DIN EN 60751 — Simulation of line resistance 10 Ω, 20 Ω or 30 Ω — Sturdy aluminium-housing