DEVAR d-RTTI, User Manual

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5
Temp. Range: -40 to 180 ºF (-40 to 82 ºC)
RFI Immunity: Rated class 3-C
DISPLAY
Range: -40 to 180 ºF or -40 to 82 ºC
Accuracy: ±0.5 ºF (±0.9 ºC) at 77 ºF (25 ºC)
Thermal Effect: Zero Shift: ±0.002 X (Reading-77 ºF)
Span Shift: ±0.004 X (Reading-77 ºF)
MILLIAMP OUTPUT
Range:
4 to 20 mA
Accuracy: ±0.7 ºF (±0.4 ºC) + 0.1% of Span
Thermal Effect: Zero: Display Shift ± 0.01% of Span per ºF
Span: Display Shift ± 0.01% of Span per ºF
Supply: 10 to 28 VDC
Max Load: R
ohms
= (V
supply
- 10V) / 0.020A
Supply effect: 0.01% of Span per Volt
Load Effect: 0.05% of Span per 300 Ohm Change
DEFAULT CALIBRATION
Display: -40 to 180 ºF
Loop: 4 to 20 mA Represents 0 to 100 ºF
FIELD CALIBRATION
Display: -40 to 180 ºF or -40 to 82ºC
Output Loop: The HI and Lo Milliamp outputs must be set to
represent temperatures within the displayable
range ( -40 to 180 ºF or -40 to 82ºC )
Output Limits: Maximum milliamp span: 220 ºF or 122 ºC
Minimum milliamp span: 35 ºF or 20 ºC
Maximum offset adjustment: ±10ºF, ±5.5ºC
Method: Three push buttons on back of panel
PRODUCT CODING
Standard Unit:
d-RTTI (Default Calibration)
Custom Cal: d-RTTI - [Temp at 4 mA / Temp at 20 mA]
Options:
-R No Internal Sensor, unit accepts input from
external 1000 Ohm plt RTD via TB.
-H Add gray painted die cast aluminum housing.