1090 Portable Process Calibrator Data Sheet0 pages

Time Electronics

1090 Portable Process Calibrator
• Measure/Simulate 8 thermocouples
• Measure/Simulate PT100-RTD
• Measure/Source (μV/mV/mA)
• Displays units in °C, °F, μV/mV, or mA
• Automatic or manual CJC
• 10 point memory recall
• Process loops 4 to 20mA & 0 to 50mA
• 24V loop drive voltage
• Mains or battery operation
SOFTWARE

• 60 hours typical use between charges

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.
Cold Junction Compensation
The unit can be operated with or without internal cold junction compensation.
PT100 Measurement and Simulation
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 +/-30mV and 0 to +/-60mA. Source ranges are 0 to +/-80mV and 0 to +80mA.
Temperature Units Selection
The display can be easily changed from °C to °F. The equivalent µV (thermocouples) and ohms (PT100) can
also be shown.
24V Process Loop Drive Mode
A process loop can be driven at 24V and up to 60mA by selecting the ‘Milliamp Source’ mode and setting
it at 60mA (or a lower level if required).
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.
Memory Recall and Step/Auto-Step Functions
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.
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 life
by 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.

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