Technical Data - testo 55 Bedienungsanleitung

14 Specifications

Technical data

Measuring range input switching
· Version Pt100: -200 to 600°C / -328 to 1112°F
· Version NTC: -50 to 150°C / -58 to 302°F
· Version TC Typ K: -40 to 1200°C / -40 to 2192°F
· Analog versions: 4 to 20mA, 0 to 1V, 0 to 20mA, 0 to
10V
Accuracy
· Versions Pt100, NTC: ±(0.1% of reading+0.2°C) /
±(0.1% of reading +0.2°F)
· Version TC Type K: typically 2% of reading
· Analog version: ±0.1%
Input resistance analog version
· Version 4 to 20mA, 0 to 20mA: 100Ohm
· Version 0 to 1V, 0 to 10V: >1.3MOhm
Supply
· Version Pt100, NTC, TC Type K: 24VDC (12 to 30VDC)
· Analog version: 24VDC (15 to 30VDC)
Current consumption
· Version Pt100, NTC, TC Type K: <15mA
· Analog version: <35mA
Resolution
· Version Pt100, NTC, TC Type K: 0.1°C / 0.1°F
· Analog version: 1LSB (12Bit)
Further instrument data
· Electrical connection: digital, RS485, 9600 baud,
Testo protocol
· Reverse polarity protection: reverse polarity protection
diode
· Input protection: RS485 has only limited protection
against overload, voltages >7V may not be connected
· Housing: Polycarbonate housing with screw cable
fittings
· Protection class: IP65
· Ambient temperature: -20 to 70°C/-4 to 158°F
· Ambient humidity: 0 to 98%RH
· Dimensions: 120 x 135 x 50mm
· Weight: 225g
Guidelines, norms and tests
· EG guideline: 89/336/EWG
Warranty
· Duration: 2 years
· Warranty conditions: see warranty booklet