2-Wire Room Temperature Transmitter - PR Electronics 2914

Electronic temperature measurement in for instance control rooms, offices, heating plants, factories, living rooms, and similar dry rooms.
Suitable as a transmitter for controllers, trip amplifiers, displays, or superior SCADA systems.

A precision Pt100 sensor with a small mass is mounted on the transmitter input thereby achieving a fast response time.
The 2-wire output signal of 4…20 mA is proportional and linear to the temperature value that influences the built-in sensor.
A reversed output signal of 20…4 mA may be ordered.
A number of different sensor error detection options may be ordered.
Protected against polarity reversal.
The bottom of the cabinet can be attached to a wall by two screws.
Visible or hidden cable access.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature	0°C to +70°C
Calibration temperature	20…28°C
Relative humidity	< 95% RH (non-cond.)
Protection degree	IP30
MECHANICAL SPECIFICATIONS
Dimensions (HxWxD)	70 x 121 x 25 mm
Weight approx.	95 g
Wire size	1 x 1.5 mm<sup<2< sup=””></sup<2<>
COMMON SPECIFICATIONS
Supply
Supply voltage	8.0…35 VDC
Internal power dissipation	25 mW…0.8 W
Response time
Response time	10 s (@ 0.5 m/s)
Voltage drop	8.0 VDC
Warm-up time	5 min.
Signal / noise ratio	Min. 60 dB
Accuracy	Better than 0.3°C
Signal dynamics, input	17 bit
Signal dynamics, output	16 bit
Effect of supply voltage change	< 0.005% of span / VDC
Temperature coefficient	< ±0.01% of span / °C
Linearity error	< 0.1% of span
EMC immunity influence	< ±0.5%
INPUT SPECIFICATIONS
Common input specifications
Max. offset	50% of max.°C
RTD input
Sensor current	> 0.2 mA, < 0.4 mA
Measurement range	0…70°C
Min. measurement range	25°C (span)
OUTPUT SPECIFICATIONS
Current output
Signal range	4…20 mA
Min. signal range	16 mA
Load (@ current output)	≤ (Vsupply – 8) / 0.023 [Ω]
Load stability	≤ 0.01% of span / 100 Ω
NAMUR NE43 Upscale/Downscale	23 mA / 3.5 mA
Common output specifications
Updating time	135 ms
of span	= of the presently selected range
OBSERVED AUTHORITY REQUIREMENTS
EMC	2014/30/EU
EAC	TR-CU 020/2011

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