Time Electronics 1090 Portable Process Calibrator Description The 1090 is a high performance portable process calibrator that combines source and measurement functions for thermocouples, Pt100s, μV, mV, and mA. As a multifunction instrument the 1090 combines accuracy and durability with simple operation, making it ideal for process plant applications. Thermocouple measurement and simulation Measure and simulate the temperature and mV characteristics of J, K, T, R, S, B, N and E thermocouples. Features • Measure and simulate 8 thermocouples • Measure and simulate Pt100-RTD • Measure and source μV/mV/mA • Displays units in °C, °F, μV/mV, or mA Cold junction compensation • Automatic or manual cold junction compensation The unit can be operated with or without internal cold junction compensation. • 10 point memory recall Based on 0.3850 alpha probe standard. Range is –200 °C to 700 °C. Measurement and source (μV, mV, and mA) Measurement ranges are 0 to ± 30 mV and 0 to ± 60 mA. Source ranges are 0 to ± 80 mV and 0 to 80 mA. • 24 V loop drive voltage • Mains or battery operation • 60 hours typical use between charges Temperature units selection The display can be easily changed from °C to °F. The equivalent μV (thermocouples) and ohms (PT100) can also be shown. 24 V Process loop drive mode Memory recall and step/auto-step functions A process loop can be driven at 24 V and up to 60 mA by selecting the ‘Milliamp Source’ mode and setting it at 60 mA (or a lower level if required). Up to 10 values can be stored in the unit’s non- volatile memory and they can be recalled at any time. The user can also manually step through them in sequence using the step key. Continuous stepping (auto-step) is also available at any user selectable rate between 1 and 10 seconds/step. Inching (incrementing/decrementing) The unit has a general-purpose inching function. This adjusts the output in fixed increments of temperature (thermocouples only) or voltage or current. The set-up menu gives a the user a choice of three levels of increment i.e. 0.1, 1 or 10 for °C/°F, or 1, 10, or 100 μV/ μA for voltage/current. The lowest of these represents the highest setting resolution and provides the most precise control of the output. This is especially useful for calibrating thermostat controllers that have tight specification on hysteresis. Power is via an internal high capacity rechargeable metal hydride battery that can be recharged from an external mains charger (supplied as standard). An auto power-down feature helps conserve battery lifeby switching off the instrument if inactive for over 5 minutes. This can be disabled if not required. The unit is supplied in a robust case with a carrying strap. A pocket for the instruction manual is provided. Time Electronics Ltd, Unit 5, T O N Business Park, 2-8 Morley Road, Tonbridge, Kent, TN9 1RA, United Kingdom T: +44 (0) 1732 355993 | F: +44 (0) 1732 350198 | mail@time

Time Electronics 1090 Portable Process Calibrator Technical Specifications Temperature Measure accuracy Thermocouple type Simulate accuracy Accuracy °C Thermocouple type An additional correction representing the equivalent 1 μV should be allowed for stray thermal emf effects. 0.2 % of resistance value (typically 0.7 °C) 0.1 % of resistance value (typically 0.5 °C) Voltage Millivolt measure Range 0 to 30 mV Millivolt source Input resistance Output resistance Current Milliamp measure Milliamp source Input resistance Time Electronics Ltd, Unit 5, T O N Business Park, 2-8 Morley Road, Tonbridge,...